mcs/class/Mono.Debugger.Soft/Mono.Debugger.Soft/Connection.cs

   1 using System;
   2 using System.IO;
   3 using System.Net;
   4 using System.Net.Sockets;
   5 using System.Threading;
   6 using System.Collections.Generic;
   7 using System.Text;
   8 using System.Diagnostics;
   9 using Mono.Cecil.Metadata;
  10
  11 namespace Mono.Debugger.Soft
  12 {
  13         public class VersionInfo {
  14                 public string VMVersion {
  15                         get; set;
  16                 }
  17
  18                 public int MajorVersion {
  19                         get; set;
  20                 }
  21
  22                 public int MinorVersion {
  23                         get; set;
  24                 }
  25
  26                 /*
  27                  * Check that this version is at least major:minor
  28                  */
  29                 public bool AtLeast (int major, int minor) {
  30                         if ((MajorVersion > major) || ((MajorVersion == major && MinorVersion >= minor)))
  31                                 return true;
  32                         else
  33                                 return false;
  34                 }
  35         }
  36
  37         struct SourceInfo {
  38                 public string source_file;
  39                 public byte[] guid, hash;
  40         }
  41
  42         class DebugInfo {
  43                 public int max_il_offset;
  44                 public int[] il_offsets;
  45                 public int[] line_numbers;
  46                 public int[] column_numbers;
  47                 public int[] end_line_numbers;
  48                 public int[] end_column_numbers;
  49                 public SourceInfo[] source_files;
  50         }
  51
  52         struct FrameInfo {
  53                 public long id;
  54                 public long method;
  55                 public int il_offset;
  56                 public StackFrameFlags flags;
  57         }
  58
  59         class TypeInfo {
  60                 public string ns, name, full_name;
  61                 public long assembly, module, base_type, element_type;
  62                 public int token, rank, attributes;
  63                 public bool is_byref, is_pointer, is_primitive, is_valuetype, is_enum;
  64                 public bool is_gtd, is_generic_type;
  65                 public long[] nested;
  66                 public long gtd;
  67                 public long[] type_args;
  68         }
  69
  70         struct IfaceMapInfo {
  71                 public long iface_id;
  72                 public long[] iface_methods;
  73                 public long[] target_methods;
  74         }
  75
  76         class MethodInfo {
  77                 public int attributes, iattributes, token;
  78                 public bool is_gmd, is_generic_method;
  79                 public long gmd;
  80                 public long[] type_args;
  81         }
  82
  83         class MethodBodyInfo {
  84                 public byte[] il;
  85                 public ExceptionClauseInfo[] clauses;
  86         }
  87
  88         struct ExceptionClauseInfo {
  89                 public ExceptionClauseFlags flags;
  90                 public int try_offset;
  91                 public int try_length;
  92                 public int handler_offset;
  93                 public int handler_length;
  94                 public int filter_offset;
  95                 public long catch_type_id;
  96         }
  97
  98         [Flags]
  99         enum ExceptionClauseFlags {
 100                 None = 0x0,
 101                 Filter = 0x1,
 102                 Finally = 0x2,
 103                 Fault = 0x4,
 104         }
 105
 106         struct ParamInfo {
 107                 public int call_conv;
 108                 public int param_count;
 109                 public int generic_param_count;
 110                 public long ret_type;
 111                 public long[] param_types;
 112                 public string[] param_names;
 113         }
 114
 115         struct LocalsInfo {
 116                 public long[] types;
 117                 public string[] names;
 118                 public int[] live_range_start;
 119                 public int[] live_range_end;
 120         }
 121
 122         struct PropInfo {
 123                 public long id;
 124                 public string name;
 125                 public long get_method, set_method;
 126                 public int attrs;
 127         }
 128
 129         class CattrNamedArgInfo {
 130                 public bool is_property;
 131                 public long id;
 132                 public ValueImpl value;
 133         }
 134
 135         class CattrInfo {
 136                 public long ctor_id;
 137                 public ValueImpl[] ctor_args;
 138                 public CattrNamedArgInfo[] named_args;
 139         }
 140
 141         class ThreadInfo {
 142                 public bool is_thread_pool;
 143         }
 144
 145         struct ObjectRefInfo {
 146                 public long type_id;
 147                 public long domain_id;
 148         }
 149
 150         enum ValueTypeId {
 151                 VALUE_TYPE_ID_NULL = 0xf0,
 152                 VALUE_TYPE_ID_TYPE = 0xf1,
 153                 VALUE_TYPE_ID_PARENT_VTYPE = 0xf2
 154         }
 155
 156         [Flags]
 157         enum InvokeFlags {
 158                 NONE = 0,
 159                 DISABLE_BREAKPOINTS = 1,
 160                 SINGLE_THREADED = 2,
 161                 OUT_THIS = 4,
 162                 OUT_ARGS = 8,
 163                 VIRTUAL = 16,
 164         }
 165
 166         enum ElementType {
 167                 End              = 0x00,
 168                 Void            = 0x01,
 169                 Boolean  = 0x02,
 170                 Char            = 0x03,
 171                 I1                = 0x04,
 172                 U1                = 0x05,
 173                 I2                = 0x06,
 174                 U2                = 0x07,
 175                 I4                = 0x08,
 176                 U4                = 0x09,
 177                 I8                = 0x0a,
 178                 U8                = 0x0b,
 179                 R4                = 0x0c,
 180                 R8                = 0x0d,
 181                 String    = 0x0e,
 182                 Ptr              = 0x0f,
 183                 ByRef      = 0x10,
 184                 ValueType   = 0x11,
 185                 Class      = 0x12,
 186                 Var        = 0x13,
 187                 Array      = 0x14,
 188                 GenericInst = 0x15,
 189                 TypedByRef  = 0x16,
 190                 I                  = 0x18,
 191                 U                  = 0x19,
 192                 FnPtr      = 0x1b,
 193                 Object    = 0x1c,
 194                 SzArray  = 0x1d,
 195                 MVar       = 0x1e,
 196                 CModReqD        = 0x1f,
 197                 CModOpt  = 0x20,
 198                 Internal        = 0x21,
 199                 Modifier        = 0x40,
 200                 Sentinel        = 0x41,
 201                 Pinned    = 0x45,
 202
 203                 Type            = 0x50,
 204                 Boxed      = 0x51,
 205                 Enum            = 0x55
 206         }
 207
 208         class ValueImpl {
 209                 public ElementType Type; /* or one of the VALUE_TYPE_ID constants */
 210                 public long Objid;
 211                 public object Value;
 212                 public long Klass; // For ElementType.ValueType
 213                 public ValueImpl[] Fields; // for ElementType.ValueType
 214                 public bool IsEnum; // For ElementType.ValueType
 215                 public long Id; /* For VALUE_TYPE_ID_TYPE */
 216                 public int Index; /* For VALUE_TYPE_PARENT_VTYPE */
 217         }
 218
 219         class ModuleInfo {
 220                 public string Name, ScopeName, FQName, Guid;
 221                 public long Assembly;
 222         }
 223
 224         class FieldMirrorInfo {
 225                 public string Name;
 226                 public long Parent, TypeId;
 227                 public int Attrs;
 228         }
 229
 230         enum TokenType {
 231                 STRING = 0,
 232                 TYPE = 1,
 233                 FIELD = 2,
 234                 METHOD = 3,
 235                 UNKNOWN = 4
 236         }
 237
 238         [Flags]
 239         enum StackFrameFlags {
 240                 NONE = 0,
 241                 DEBUGGER_INVOKE = 1,
 242                 NATIVE_TRANSITION = 2
 243         }
 244
 245         class ResolvedToken {
 246                 public TokenType Type;
 247                 public string Str;
 248                 public long Id;
 249         }
 250
 251         class Modifier {
 252         }
 253
 254         class CountModifier : Modifier {
 255                 public int Count {
 256                         get; set;
 257                 }
 258         }
 259
 260         class LocationModifier : Modifier {
 261                 public long Method {
 262                         get; set;
 263                 }
 264
 265                 public long Location {
 266                         get; set;
 267                 }
 268         }
 269
 270         class StepModifier : Modifier {
 271                 public long Thread {
 272                         get; set;
 273                 }
 274
 275                 public int Depth {
 276                         get; set;
 277                 }
 278
 279                 public int Size {
 280                         get; set;
 281                 }
 282
 283                 public int Filter {
 284                         get; set;
 285                 }
 286         }
 287
 288         class ThreadModifier : Modifier {
 289                 public long Thread {
 290                         get; set;
 291                 }
 292         }
 293
 294         class ExceptionModifier : Modifier {
 295                 public long Type {
 296                         get; set;
 297                 }
 298                 public bool Caught {
 299                         get; set;
 300                 }
 301                 public bool Uncaught {
 302                         get; set;
 303                 }
 304                 public bool Subclasses {
 305                         get; set;
 306                 }
 307         }
 308
 309         class AssemblyModifier : Modifier {
 310                 public long[] Assemblies {
 311                         get; set;
 312                 }
 313         }
 314
 315         class SourceFileModifier : Modifier {
 316                 public string[] SourceFiles {
 317                         get; set;
 318                 }
 319         }
 320
 321         class TypeNameModifier : Modifier {
 322                 public string[] TypeNames {
 323                         get; set;
 324                 }
 325         }
 326
 327         class EventInfo {
 328                 public EventType EventType {
 329                         get; set;
 330                 }
 331
 332                 public int ReqId {
 333                         get; set;
 334                 }
 335
 336                 public SuspendPolicy SuspendPolicy {
 337                         get; set;
 338                 }
 339
 340                 public long ThreadId {
 341                         get; set;
 342                 }
 343
 344                 public long Id {
 345                         get; set;
 346                 }
 347
 348                 public long Location {
 349                         get; set;
 350                 }
 351
 352                 public int Level {
 353                         get; set;
 354                 }
 355
 356                 public string Category {
 357                         get; set;
 358                 }
 359
 360                 public string Message {
 361                         get; set;
 362                 }
 363
 364                 public int ExitCode {
 365                         get; set;
 366                 }
 367
 368                 public EventInfo (EventType type, int req_id) {
 369                         EventType = type;
 370                         ReqId = req_id;
 371                 }
 372         }
 373
 374         public enum ErrorCode {
 375                 NONE = 0,
 376                 INVALID_OBJECT = 20,
 377                 INVALID_FIELDID = 25,
 378                 INVALID_FRAMEID = 30,
 379                 NOT_IMPLEMENTED = 100,
 380                 NOT_SUSPENDED = 101,
 381                 INVALID_ARGUMENT = 102,
 382                 ERR_UNLOADED = 103,
 383                 ERR_NO_INVOCATION = 104,
 384                 ABSENT_INFORMATION = 105,
 385                 NO_SEQ_POINT_AT_IL_OFFSET = 106
 386         }
 387
 388         public class ErrorHandlerEventArgs : EventArgs {
 389
 390                 public ErrorCode ErrorCode {
 391                         get; set;
 392                 }
 393         }
 394
 395         /*
 396          * Represents the connection to the debuggee
 397          */
 398         public abstract class Connection
 399         {
 400                 /*
 401                  * The protocol and the packet format is based on JDWP, the differences
 402                  * are in the set of supported events, and the commands.
 403                  */
 404                 internal const string HANDSHAKE_STRING = "DWP-Handshake";
 405
 406                 internal const int HEADER_LENGTH = 11;
 407
 408                 static readonly bool EnableConnectionLogging = !String.IsNullOrEmpty (Environment.GetEnvironmentVariable ("MONO_SDB_LOG"));
 409                 static int ConnectionId;
 410                 readonly StreamWriter LoggingStream;
 411
 412                 /*
 413                  * Th version of the wire-protocol implemented by the library. The library
 414                  * and the debuggee can communicate if they implement the same major version.
 415                  * If they implement a different minor version, they can communicate, but some
 416                  * features might not be available. This allows older clients to communicate
 417                  * with newer runtimes, and vice versa.
 418                  */
 419                 internal const int MAJOR_VERSION = 2;
 420                 internal const int MINOR_VERSION = 37;
 421
 422                 enum WPSuspendPolicy {
 423                         NONE = 0,
 424                         EVENT_THREAD = 1,
 425                         ALL = 2
 426                 }
 427
 428                 enum CommandSet {
 429                         VM = 1,
 430                         OBJECT_REF = 9,
 431                         STRING_REF = 10,
 432                         THREAD = 11,
 433                         ARRAY_REF = 13,
 434                         EVENT_REQUEST = 15,
 435                         STACK_FRAME = 16,
 436                         APPDOMAIN = 20,
 437                         ASSEMBLY = 21,
 438                         METHOD = 22,
 439                         TYPE = 23,
 440                         MODULE = 24,
 441                         FIELD = 25,
 442                         EVENT = 64
 443                 }
 444
 445                 enum EventKind {
 446                         VM_START = 0,
 447                         VM_DEATH = 1,
 448                         THREAD_START = 2,
 449                         THREAD_DEATH = 3,
 450                         APPDOMAIN_CREATE = 4, // Not in JDI
 451                         APPDOMAIN_UNLOAD = 5, // Not in JDI
 452                         METHOD_ENTRY = 6,
 453                         METHOD_EXIT = 7,
 454                         ASSEMBLY_LOAD = 8,
 455                         ASSEMBLY_UNLOAD = 9,
 456                         BREAKPOINT = 10,
 457                         STEP = 11,
 458                         TYPE_LOAD = 12,
 459                         EXCEPTION = 13,
 460                         KEEPALIVE = 14,
 461                         USER_BREAK = 15,
 462                         USER_LOG = 16
 463                 }
 464
 465                 enum ModifierKind {
 466                         COUNT = 1,
 467                         THREAD_ONLY = 3,
 468                         LOCATION_ONLY = 7,
 469                         EXCEPTION_ONLY = 8,
 470                         STEP = 10,
 471                         ASSEMBLY_ONLY = 11,
 472                         SOURCE_FILE_ONLY = 12,
 473                         TYPE_NAME_ONLY = 13
 474                 }
 475
 476                 enum CmdVM {
 477                         VERSION = 1,
 478                         ALL_THREADS = 2,
 479                         SUSPEND = 3,
 480                         RESUME = 4,
 481                         EXIT = 5,
 482                         DISPOSE = 6,
 483                         INVOKE_METHOD = 7,
 484                         SET_PROTOCOL_VERSION = 8,
 485                         ABORT_INVOKE = 9,
 486                         SET_KEEPALIVE = 10,
 487                         GET_TYPES_FOR_SOURCE_FILE = 11,
 488                         GET_TYPES = 12,
 489                         INVOKE_METHODS = 13,
 490                         START_BUFFERING = 14,
 491                         STOP_BUFFERING = 15
 492                 }
 493
 494                 enum CmdEvent {
 495                         COMPOSITE = 100
 496                 }
 497
 498                 enum CmdThread {
 499                         GET_FRAME_INFO = 1,
 500                         GET_NAME = 2,
 501                         GET_STATE = 3,
 502                         GET_INFO = 4,
 503                         /* FIXME: Merge into GET_INFO when the major protocol version is increased */
 504                         GET_ID = 5,
 505                         /* Ditto */
 506                         GET_TID = 6,
 507                         SET_IP = 7
 508                 }
 509
 510                 enum CmdEventRequest {
 511                         SET = 1,
 512                         CLEAR = 2,
 513                         CLEAR_ALL_BREAKPOINTS = 3
 514                 }
 515
 516                 enum CmdAppDomain {
 517                         GET_ROOT_DOMAIN = 1,
 518                         GET_FRIENDLY_NAME = 2,
 519                         GET_ASSEMBLIES = 3,
 520                         GET_ENTRY_ASSEMBLY = 4,
 521                         CREATE_STRING = 5,
 522                         GET_CORLIB = 6,
 523                         CREATE_BOXED_VALUE = 7
 524                 }
 525
 526                 enum CmdAssembly {
 527                         GET_LOCATION = 1,
 528                         GET_ENTRY_POINT = 2,
 529                         GET_MANIFEST_MODULE = 3,
 530                         GET_OBJECT = 4,
 531                         GET_TYPE = 5,
 532                         GET_NAME = 6
 533                 }
 534
 535                 enum CmdModule {
 536                         GET_INFO = 1,
 537                 }
 538
 539                 enum CmdMethod {
 540                         GET_NAME = 1,
 541                         GET_DECLARING_TYPE = 2,
 542                         GET_DEBUG_INFO = 3,
 543                         GET_PARAM_INFO = 4,
 544                         GET_LOCALS_INFO = 5,
 545                         GET_INFO = 6,
 546                         GET_BODY = 7,
 547                         RESOLVE_TOKEN = 8,
 548                         GET_CATTRS = 9,
 549                         MAKE_GENERIC_METHOD = 10
 550                 }
 551
 552                 enum CmdType {
 553                         GET_INFO = 1,
 554                         GET_METHODS = 2,
 555                         GET_FIELDS = 3,
 556                         GET_VALUES = 4,
 557                         GET_OBJECT = 5,
 558                         GET_SOURCE_FILES = 6,
 559                         SET_VALUES = 7,
 560                         IS_ASSIGNABLE_FROM = 8,
 561                         GET_PROPERTIES = 9,
 562                         GET_CATTRS = 10,
 563                         GET_FIELD_CATTRS = 11,
 564                         GET_PROPERTY_CATTRS = 12,
 565                         /* FIXME: Merge into GET_SOURCE_FILES when the major protocol version is increased */
 566                         GET_SOURCE_FILES_2 = 13,
 567                         /* FIXME: Merge into GET_VALUES when the major protocol version is increased */
 568                         GET_VALUES_2 = 14,
 569                         CMD_TYPE_GET_METHODS_BY_NAME_FLAGS = 15,
 570                         GET_INTERFACES = 16,
 571                         GET_INTERFACE_MAP = 17,
 572                         IS_INITIALIZED = 18,
 573                         CREATE_INSTANCE = 19
 574                 }
 575
 576                 enum CmdField {
 577                         GET_INFO = 1
 578                 }
 579
 580                 [Flags]
 581                 enum BindingFlagsExtensions {
 582                         BINDING_FLAGS_IGNORE_CASE = 0x70000000,
 583                 }
 584
 585                 enum CmdStackFrame {
 586                         GET_VALUES = 1,
 587                         GET_THIS = 2,
 588                         SET_VALUES = 3
 589                 }
 590
 591                 enum CmdArrayRef {
 592                         GET_LENGTH = 1,
 593                         GET_VALUES = 2,
 594                         SET_VALUES = 3
 595                 }
 596
 597                 enum CmdStringRef {
 598                         GET_VALUE = 1,
 599                         GET_LENGTH = 2,
 600                         GET_CHARS = 3
 601                 }
 602
 603                 enum CmdObjectRef {
 604                         GET_TYPE = 1,
 605                         GET_VALUES = 2,
 606                         IS_COLLECTED = 3,
 607                         GET_ADDRESS = 4,
 608                         GET_DOMAIN = 5,
 609                         SET_VALUES = 6,
 610                         GET_INFO = 7,
 611                 }
 612
 613                 class Header {
 614                         public int id;
 615                         public int command_set;
 616                         public int command;
 617                         public int flags;
 618                 }
 619
 620                 internal static int GetPacketLength (byte[] header) {
 621                         int offset = 0;
 622                         return decode_int (header, ref offset);
 623                 }
 624
 625                 internal static bool IsReplyPacket (byte[] packet) {
 626                         int offset = 8;
 627                         return decode_byte (packet, ref offset) == 0x80;
 628                 }
 629
 630                 internal static int GetPacketId (byte[] packet) {
 631                         int offset = 4;
 632                         return decode_int (packet, ref offset);
 633                 }
 634
 635                 static int decode_byte (byte[] packet, ref int offset) {
 636                         return packet [offset++];
 637                 }
 638
 639                 static int decode_short (byte[] packet, ref int offset) {
 640                         int res = ((int)packet [offset] << 8) | (int)packet [offset + 1];
 641                         offset += 2;
 642                         return res;
 643                 }
 644
 645                 static int decode_int (byte[] packet, ref int offset) {
 646                         int res = ((int)packet [offset] << 24) | ((int)packet [offset + 1] << 16) | ((int)packet [offset + 2] << 8) | (int)packet [offset + 3];
 647                         offset += 4;
 648                         return res;
 649                 }
 650
 651                 static long decode_id (byte[] packet, ref int offset) {
 652                         return decode_int (packet, ref offset);
 653                 }
 654
 655                 static long decode_long (byte[] packet, ref int offset) {
 656                         uint high = (uint)decode_int (packet, ref offset);
 657                         uint low = (uint)decode_int (packet, ref offset);
 658
 659                         return (long)(((ulong)high << 32) | (ulong)low);
 660                 }
 661
 662                 internal static SuspendPolicy decode_suspend_policy (int suspend_policy) {
 663                         switch ((WPSuspendPolicy)suspend_policy) {
 664                         case WPSuspendPolicy.NONE:
 665                                 return SuspendPolicy.None;
 666                         case WPSuspendPolicy.EVENT_THREAD:
 667                                 return SuspendPolicy.EventThread;
 668                         case WPSuspendPolicy.ALL:
 669                                 return SuspendPolicy.All;
 670                         default:
 671                                 throw new NotImplementedException ();
 672                         }
 673                 }
 674
 675                 static Header decode_command_header (byte[] packet) {
 676                         int offset = 0;
 677                         Header res = new Header ();
 678
 679                         decode_int (packet, ref offset);
 680                         res.id = decode_int (packet, ref offset);
 681                         res.flags = decode_byte (packet, ref offset);
 682                         res.command_set = decode_byte (packet, ref offset);
 683                         res.command = decode_byte (packet, ref offset);
 684
 685                         return res;
 686                 }
 687
 688                 static void encode_byte (byte[] buf, int b, ref int offset) {
 689                         buf [offset] = (byte)b;
 690                         offset ++;
 691                 }
 692
 693                 static void encode_int (byte[] buf, int i, ref int offset) {
 694                         buf [offset] = (byte)((i >> 24) & 0xff);
 695                         buf [offset + 1] = (byte)((i >> 16) & 0xff);
 696                         buf [offset + 2] = (byte)((i >> 8) & 0xff);
 697                         buf [offset + 3] = (byte)((i >> 0) & 0xff);
 698                         offset += 4;
 699                 }
 700
 701                 static void encode_id (byte[] buf, long id, ref int offset) {
 702                         encode_int (buf, (int)id, ref offset);
 703                 }
 704
 705                 static void encode_long (byte[] buf, long l, ref int offset) {
 706                         encode_int (buf, (int)((l >> 32) & 0xffffffff), ref offset);
 707                         encode_int (buf, (int)(l & 0xffffffff), ref offset);
 708                 }
 709
 710                 internal static byte[] EncodePacket (int id, int commandSet, int command, byte[] data, int dataLen) {
 711                         byte[] buf = new byte [dataLen + 11];
 712                         int offset = 0;
 713
 714                         encode_int (buf, buf.Length, ref offset);
 715                         encode_int (buf, id, ref offset);
 716                         encode_byte (buf, 0, ref offset);
 717                         encode_byte (buf, commandSet, ref offset);
 718                         encode_byte (buf, command, ref offset);
 719
 720                         for (int i = 0; i < dataLen; ++i)
 721                                 buf [offset + i] = data [i];
 722
 723                         return buf;
 724                 }
 725
 726                 class PacketReader {
 727                         byte[] packet;
 728                         int offset;
 729
 730                         public PacketReader (byte[] packet) {
 731                                 this.packet = packet;
 732
 733                                 // For event packets
 734                                 Header header = decode_command_header (packet);
 735                                 CommandSet = (CommandSet)header.command_set;
 736                                 Command = header.command;
 737
 738                                 // For reply packets
 739                                 offset = 0;
 740                                 ReadInt (); // length
 741                                 ReadInt (); // id
 742                                 ReadByte (); // flags
 743                                 ErrorCode = ReadShort ();
 744                         }
 745
 746                         public CommandSet CommandSet {
 747                                 get; set;
 748                         }
 749
 750                         public int Command {
 751                                 get; set;
 752                         }
 753
 754                         public int ErrorCode {
 755                                 get; set;
 756                         }
 757
 758                         public int Offset {
 759                                 get {
 760                                         return offset;
 761                                 }
 762                         }
 763
 764                         public int ReadByte () {
 765                                 return decode_byte (packet, ref offset);
 766                         }
 767
 768                         public int ReadShort () {
 769                                 return decode_short (packet, ref offset);
 770                         }
 771
 772                         public int ReadInt () {
 773                                 return decode_int (packet, ref offset);
 774                         }
 775
 776                         public long ReadId () {
 777                                 return decode_id (packet, ref offset);
 778                         }
 779
 780                         public long ReadLong () {
 781                                 return decode_long (packet, ref offset);
 782                         }
 783
 784                         public float ReadFloat () {
 785                                 float f = DataConverter.FloatFromBE (packet, offset);
 786                                 offset += 4;
 787                                 return f;
 788                         }
 789
 790                         public double ReadDouble () {
 791                                 double d = DataConverter.DoubleFromBE (packet, offset);
 792                                 offset += 8;
 793                                 return d;
 794                         }
 795
 796                         public string ReadString () {
 797                                 int len = decode_int (packet, ref offset);
 798                                 string res = new String (Encoding.UTF8.GetChars (packet, offset, len));
 799                                 offset += len;
 800                                 return res;
 801                         }
 802
 803                         public ValueImpl ReadValue () {
 804                                 ElementType etype = (ElementType)ReadByte ();
 805
 806                                 switch (etype) {
 807                                 case ElementType.Void:
 808                                         return new ValueImpl { Type = etype };
 809                                 case ElementType.I1:
 810                                         return new ValueImpl { Type = etype, Value = (sbyte)ReadInt () };
 811                                 case ElementType.U1:
 812                                         return new ValueImpl { Type = etype, Value = (byte)ReadInt () };
 813                                 case ElementType.Boolean:
 814                                         return new ValueImpl { Type = etype, Value = ReadInt () != 0 };
 815                                 case ElementType.I2:
 816                                         return new ValueImpl { Type = etype, Value = (short)ReadInt () };
 817                                 case ElementType.U2:
 818                                         return new ValueImpl { Type = etype, Value = (ushort)ReadInt () };
 819                                 case ElementType.Char:
 820                                         return new ValueImpl { Type = etype, Value = (char)ReadInt () };
 821                                 case ElementType.I4:
 822                                         return new ValueImpl { Type = etype, Value = ReadInt () };
 823                                 case ElementType.U4:
 824                                         return new ValueImpl { Type = etype, Value = (uint)ReadInt () };
 825                                 case ElementType.I8:
 826                                         return new ValueImpl { Type = etype, Value = ReadLong () };
 827                                 case ElementType.U8:
 828                                         return new ValueImpl { Type = etype, Value = (ulong)ReadLong () };
 829                                 case ElementType.R4:
 830                                         return new ValueImpl { Type = etype, Value = ReadFloat () };
 831                                 case ElementType.R8:
 832                                         return new ValueImpl { Type = etype, Value = ReadDouble () };
 833                                 case ElementType.I:
 834                                 case ElementType.U:
 835                                 case ElementType.Ptr:
 836                                         // FIXME: The client and the debuggee might have different word sizes
 837                                         return new ValueImpl { Type = etype, Value = ReadLong () };
 838                                 case ElementType.String:
 839                                 case ElementType.SzArray:
 840                                 case ElementType.Class:
 841                                 case ElementType.Array:
 842                                 case ElementType.Object:
 843                                         long objid = ReadId ();
 844                                         return new ValueImpl () { Type = etype, Objid = objid };
 845                                 case ElementType.ValueType:
 846                                         bool is_enum = ReadByte () == 1;
 847                                         long klass = ReadId ();
 848                                         long nfields = ReadInt ();
 849                                         ValueImpl[] fields = new ValueImpl [nfields];
 850                                         for (int i = 0; i < nfields; ++i)
 851                                                 fields [i] = ReadValue ();
 852                                         return new ValueImpl () { Type = etype, Klass = klass, Fields = fields, IsEnum = is_enum };
 853                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
 854                                         return new ValueImpl { Type = etype };
 855                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_TYPE:
 856                                         return new ValueImpl () { Type = etype, Id = ReadId () };
 857                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_PARENT_VTYPE:
 858                                         return new ValueImpl () { Type = etype, Index = ReadInt () };
 859                                 default:
 860                                         throw new NotImplementedException ("Unable to handle type " + etype);
 861                                 }
 862                         }
 863
 864                         public long[] ReadIds (int n) {
 865                                 long[] res = new long [n];
 866                                 for (int i = 0; i < n; ++i)
 867                                         res [i] = ReadId ();
 868                                 return res;
 869                         }
 870                 }
 871
 872                 class PacketWriter {
 873
 874                         byte[] data;
 875                         int offset;
 876
 877                         public PacketWriter () {
 878                                 data = new byte [1024];
 879                                 offset = 0;
 880                         }
 881
 882                         void MakeRoom (int size) {
 883                                 if (offset + size >= data.Length) {
 884                                         int new_len = data.Length * 2;
 885                                         while (new_len < offset + size) {
 886                                                 new_len *= 2;
 887                                         }
 888                                         byte[] new_data = new byte [new_len];
 889                                         Array.Copy (data, new_data, data.Length);
 890                                         data = new_data;
 891                                 }
 892                         }
 893
 894                         public PacketWriter WriteByte (byte val) {
 895                                 MakeRoom (1);
 896                                 encode_byte (data, val, ref offset);
 897                                 return this;
 898                         }
 899
 900                         public PacketWriter WriteInt (int val) {
 901                                 MakeRoom (4);
 902                                 encode_int (data, val, ref offset);
 903                                 return this;
 904                         }
 905
 906                         public PacketWriter WriteId (long id) {
 907                                 MakeRoom (8);
 908                                 encode_id (data, id, ref offset);
 909                                 return this;
 910                         }
 911
 912                         public PacketWriter WriteLong (long val) {
 913                                 MakeRoom (8);
 914                                 encode_long (data, val, ref offset);
 915                                 return this;
 916                         }
 917
 918                         public PacketWriter WriteFloat (float f) {
 919                                 MakeRoom (8);
 920                                 byte[] b = DataConverter.GetBytesBE (f);
 921                                 for (int i = 0; i < 4; ++i)
 922                                         data [offset + i] = b [i];
 923                                 offset += 4;
 924                                 return this;
 925                         }
 926
 927                         public PacketWriter WriteDouble (double d) {
 928                                 MakeRoom (8);
 929                                 byte[] b = DataConverter.GetBytesBE (d);
 930                                 for (int i = 0; i < 8; ++i)
 931                                         data [offset + i] = b [i];
 932                                 offset += 8;
 933                                 return this;
 934                         }
 935
 936                         public PacketWriter WriteInts (int[] ids) {
 937                                 for (int i = 0; i < ids.Length; ++i)
 938                                         WriteInt (ids [i]);
 939                                 return this;
 940                         }
 941
 942                         public PacketWriter WriteIds (long[] ids) {
 943                                 for (int i = 0; i < ids.Length; ++i)
 944                                         WriteId (ids [i]);
 945                                 return this;
 946                         }
 947
 948                         public PacketWriter WriteString (string s) {
 949                                 if (s == null)
 950                                         return WriteInt (-1);
 951
 952                                 byte[] b = Encoding.UTF8.GetBytes (s);
 953                                 MakeRoom (4);
 954                                 encode_int (data, b.Length, ref offset);
 955                                 MakeRoom (b.Length);
 956                                 Buffer.BlockCopy (b, 0, data, offset, b.Length);
 957                                 offset += b.Length;
 958                                 return this;
 959                         }
 960
 961                         public PacketWriter WriteBool (bool val) {
 962                                 WriteByte (val ? (byte)1 : (byte)0);
 963                                 return this;
 964                         }
 965
 966                         public PacketWriter WriteValue (ValueImpl v) {
 967                                 ElementType t;
 968
 969                                 if (v.Value != null)
 970                                         t = TypeCodeToElementType (Type.GetTypeCode (v.Value.GetType ()));
 971                                 else
 972                                         t = v.Type;
 973                                 WriteByte ((byte)t);
 974                                 switch (t) {
 975                                 case ElementType.Boolean:
 976                                         WriteInt ((bool)v.Value ? 1 : 0);
 977                                         break;
 978                                 case ElementType.Char:
 979                                         WriteInt ((int)(char)v.Value);
 980                                         break;
 981                                 case ElementType.I1:
 982                                         WriteInt ((int)(sbyte)v.Value);
 983                                         break;
 984                                 case ElementType.U1:
 985                                         WriteInt ((int)(byte)v.Value);
 986                                         break;
 987                                 case ElementType.I2:
 988                                         WriteInt ((int)(short)v.Value);
 989                                         break;
 990                                 case ElementType.U2:
 991                                         WriteInt ((int)(ushort)v.Value);
 992                                         break;
 993                                 case ElementType.I4:
 994                                         WriteInt ((int)(int)v.Value);
 995                                         break;
 996                                 case ElementType.U4:
 997                                         WriteInt ((int)(uint)v.Value);
 998                                         break;
 999                                 case ElementType.I8:
1000                                         WriteLong ((long)(long)v.Value);
1001                                         break;
1002                                 case ElementType.U8:
1003                                         WriteLong ((long)(ulong)v.Value);
1004                                         break;
1005                                 case ElementType.R4:
1006                                         WriteFloat ((float)v.Value);
1007                                         break;
1008                                 case ElementType.R8:
1009                                         WriteDouble ((double)v.Value);
1010                                         break;
1011                                 case ElementType.String:
1012                                 case ElementType.SzArray:
1013                                 case ElementType.Class:
1014                                 case ElementType.Array:
1015                                 case ElementType.Object:
1016                                         WriteId (v.Objid);
1017                                         break;
1018                                 case ElementType.ValueType:
1019                                         // FIXME:
1020                                         if (v.IsEnum)
1021                                                 throw new NotImplementedException ();
1022                                         WriteByte (0);
1023                                         WriteId (v.Klass);
1024                                         WriteInt (v.Fields.Length);
1025                                         for (int i = 0; i < v.Fields.Length; ++i)
1026                                                 WriteValue (v.Fields [i]);
1027                                         break;
1028                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
1029                                         break;
1030                                 default:
1031                                         throw new NotImplementedException ();
1032                                 }
1033
1034                                 return this;
1035                         }
1036
1037                         public PacketWriter WriteValues (ValueImpl[] values) {
1038                                 for (int i = 0; i < values.Length; ++i)
1039                                         WriteValue (values [i]);
1040                                 return this;
1041                         }
1042
1043                         public byte[] Data {
1044                                 get {
1045                                         return data;
1046                                 }
1047                         }
1048
1049                         public int Offset {
1050                                 get {
1051                                         return offset;
1052                                 }
1053                         }
1054                 }
1055
1056                 delegate void ReplyCallback (int packet_id, byte[] packet);
1057
1058                 bool closed;
1059                 Thread receiver_thread;
1060                 Dictionary<int, byte[]> reply_packets;
1061                 Dictionary<int, ReplyCallback> reply_cbs;
1062                 Dictionary<int, int> reply_cb_counts;
1063                 object reply_packets_monitor;
1064
1065                 internal event EventHandler<ErrorHandlerEventArgs> ErrorHandler;
1066
1067                 protected Connection () {
1068                         closed = false;
1069                         reply_packets = new Dictionary<int, byte[]> ();
1070                         reply_cbs = new Dictionary<int, ReplyCallback> ();
1071                         reply_cb_counts = new Dictionary<int, int> ();
1072                         reply_packets_monitor = new Object ();
1073                         if (EnableConnectionLogging) {
1074                                 var path = Environment.GetEnvironmentVariable ("MONO_SDB_LOG");
1075                                 if (path.Contains ("{0}")) {
1076                                         //C:\SomeDir\sdbLog{0}.txt -> C:\SomeDir\sdbLog1.txt
1077                                         LoggingStream = new StreamWriter (string.Format (path, ConnectionId++), false);
1078                                 } else if (Path.HasExtension (path)) {
1079                                         //C:\SomeDir\sdbLog.txt -> C:\SomeDir\sdbLog1.txt
1080                                         LoggingStream = new StreamWriter (Path.GetDirectoryName (path) + Path.DirectorySeparatorChar + Path.GetFileNameWithoutExtension (path) + ConnectionId++ + "." + Path.GetExtension (path), false);
1081                                 } else {
1082                                         //C:\SomeDir\sdbLog -> C:\SomeDir\sdbLog1
1083                                         LoggingStream = new StreamWriter (path + ConnectionId++, false);
1084                                 }
1085                         }
1086                 }
1087
1088                 protected abstract int TransportReceive (byte[] buf, int buf_offset, int len);
1089                 protected abstract int TransportSend (byte[] buf, int buf_offset, int len);
1090                 protected abstract void TransportSetTimeouts (int send_timeout, int receive_timeout);
1091                 protected abstract void TransportClose ();
1092
1093                 internal VersionInfo Version;
1094
1095                 int Receive (byte[] buf, int buf_offset, int len) {
1096                         int offset = 0;
1097
1098                         while (offset < len) {
1099                                 int n = TransportReceive (buf, buf_offset + offset, len - offset);
1100
1101                                 if (n == 0)
1102                                         return offset;
1103                                 offset += n;
1104                         }
1105
1106                         return offset;
1107                 }
1108
1109                 // Do the wire protocol handshake
1110                 internal void Connect () {
1111                         byte[] buf = new byte [HANDSHAKE_STRING.Length];
1112                         char[] cbuf = new char [buf.Length];
1113
1114                         // FIXME: Add a timeout
1115                         int n = Receive (buf, 0, buf.Length);
1116                         if (n == 0)
1117                                 throw new IOException ("DWP Handshake failed.");
1118                         for (int i = 0; i < buf.Length; ++i)
1119                                 cbuf [i] = (char)buf [i];
1120
1121                         if (new String (cbuf) != HANDSHAKE_STRING)
1122                                 throw new IOException ("DWP Handshake failed.");
1123
1124                         TransportSend (buf, 0, buf.Length);
1125
1126                         receiver_thread = new Thread (new ThreadStart (receiver_thread_main));
1127                         receiver_thread.Name = "SDB Receiver";
1128                         receiver_thread.IsBackground = true;
1129                         receiver_thread.Start ();
1130
1131                         Version = VM_GetVersion ();
1132
1133                         //
1134                         // Tell the debuggee our protocol version, so newer debuggees can work
1135                         // with older clients
1136                         //
1137
1138                         //
1139                         // Older debuggees might not support this request
1140                         EventHandler<ErrorHandlerEventArgs> OrigErrorHandler = ErrorHandler;
1141                         ErrorHandler = null;
1142                         ErrorHandler += delegate (object sender, ErrorHandlerEventArgs args) {
1143                                 throw new NotSupportedException ();
1144                         };
1145                         try {
1146                                 VM_SetProtocolVersion (MAJOR_VERSION, MINOR_VERSION);
1147                         } catch (NotSupportedException) {
1148                         }
1149                         ErrorHandler = OrigErrorHandler;
1150                 }
1151
1152                 internal byte[] ReadPacket () {
1153                         // FIXME: Throw ClosedConnectionException () if the connection is closed
1154                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
1155                         // FIXME: Locking
1156                         byte[] header = new byte [HEADER_LENGTH];
1157
1158                         int len = Receive (header, 0, header.Length);
1159                         if (len == 0)
1160                                 return new byte [0];
1161                         if (len != HEADER_LENGTH) {
1162                                 // FIXME:
1163                                 throw new IOException ("Packet of length " + len + " is read.");
1164                         }
1165
1166                         int packetLength = GetPacketLength (header);
1167                         if (packetLength < 11)
1168                                 throw new IOException ("Invalid packet length.");
1169
1170                         if (packetLength == 11) {
1171                                 return header;
1172                         } else {
1173                                 byte[] buf = new byte [packetLength];
1174                                 for (int i = 0; i < header.Length; ++i)
1175                                         buf [i] = header [i];
1176                                 len = Receive (buf, header.Length, packetLength - header.Length);
1177                                 if (len != packetLength - header.Length)
1178                                         throw new IOException ();
1179                                 return buf;
1180                         }
1181                 }
1182
1183                 internal void WritePacket (byte[] packet) {
1184                         // FIXME: Throw ClosedConnectionException () if the connection is closed
1185                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
1186                         // FIXME: Locking
1187                         TransportSend (packet, 0, packet.Length);
1188                 }
1189
1190                 internal void WritePackets (List<byte[]> packets) {
1191                         // FIXME: Throw ClosedConnectionException () if the connection is closed
1192                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
1193                         // FIXME: Locking
1194                         int len = 0;
1195                         for (int i = 0; i < packets.Count; ++i)
1196                                 len += packets [i].Length;
1197                         byte[] data = new byte [len];
1198                         int pos = 0;
1199                         for (int i = 0; i < packets.Count; ++i) {
1200                                 Buffer.BlockCopy (packets [i], 0, data, pos, packets [i].Length);
1201                                 pos += packets [i].Length;
1202                         }
1203                         TransportSend (data, 0, data.Length);
1204                 }
1205
1206                 internal void Close () {
1207                         closed = true;
1208                 }
1209
1210                 internal bool IsClosed {
1211                         get {
1212                                 return closed;
1213                         }
1214                 }
1215
1216                 bool disconnected;
1217
1218                 void receiver_thread_main () {
1219                         while (!closed) {
1220                                 try {
1221                                         bool res = ReceivePacket ();
1222                                         if (!res)
1223                                                 break;
1224                                 } catch (Exception ex) {
1225                                         if (!closed) {
1226                                                 Console.WriteLine (ex);
1227                                         }
1228                                         break;
1229                                 }
1230                         }
1231
1232                         lock (reply_packets_monitor) {
1233                                 disconnected = true;
1234                                 Monitor.PulseAll (reply_packets_monitor);
1235                                 TransportClose ();
1236                         }
1237                         EventHandler.VMDisconnect (0, 0, null);
1238                 }
1239
1240                 bool ReceivePacket () {
1241                                 byte[] packet = ReadPacket ();
1242
1243                                 if (packet.Length == 0) {
1244                                         return false;
1245                                 }
1246
1247                                 if (IsReplyPacket (packet)) {
1248                                         int id = GetPacketId (packet);
1249                                         ReplyCallback cb = null;
1250                                         lock (reply_packets_monitor) {
1251                                                 reply_cbs.TryGetValue (id, out cb);
1252                                                 if (cb == null) {
1253                                                         reply_packets [id] = packet;
1254                                                         Monitor.PulseAll (reply_packets_monitor);
1255                                                 } else {
1256                                                         int c = reply_cb_counts [id];
1257                                                         c --;
1258                                                         if (c == 0) {
1259                                                                 reply_cbs.Remove (id);
1260                                                                 reply_cb_counts.Remove (id);
1261                                                         }
1262                                                 }
1263                                         }
1264
1265                                         if (cb != null)
1266                                                 cb.Invoke (id, packet);
1267                                 } else {
1268                                         PacketReader r = new PacketReader (packet);
1269
1270                                         if (r.CommandSet == CommandSet.EVENT && r.Command == (int)CmdEvent.COMPOSITE) {
1271                                                 int spolicy = r.ReadByte ();
1272                                                 int nevents = r.ReadInt ();
1273
1274                                                 SuspendPolicy suspend_policy = decode_suspend_policy (spolicy);
1275
1276                                                 EventInfo[] events = new EventInfo [nevents];
1277
1278                                                 for (int i = 0; i < nevents; ++i) {
1279                                                         EventKind kind = (EventKind)r.ReadByte ();
1280                                                         int req_id = r.ReadInt ();
1281
1282                                                         EventType etype = (EventType)kind;
1283
1284                                                         long thread_id = r.ReadId ();
1285                                                         if (kind == EventKind.VM_START) {
1286                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id };
1287                                                                 //EventHandler.VMStart (req_id, thread_id, null);
1288                                                         } else if (kind == EventKind.VM_DEATH) {
1289                                                                 int exit_code = 0;
1290                                                                 if (Version.AtLeast (2, 27))
1291                                                                         exit_code = r.ReadInt ();
1292                                                                 //EventHandler.VMDeath (req_id, 0, null);
1293                                                                 events [i] = new EventInfo (etype, req_id) { ExitCode = exit_code };
1294                                                         } else if (kind == EventKind.THREAD_START) {
1295                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = thread_id };
1296                                                                 //EventHandler.ThreadStart (req_id, thread_id, thread_id);
1297                                                         } else if (kind == EventKind.THREAD_DEATH) {
1298                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = thread_id };
1299                                                                 //EventHandler.ThreadDeath (req_id, thread_id, thread_id);
1300                                                         } else if (kind == EventKind.ASSEMBLY_LOAD) {
1301                                                                 long id = r.ReadId ();
1302                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1303                                                                 //EventHandler.AssemblyLoad (req_id, thread_id, id);
1304                                                         } else if (kind == EventKind.ASSEMBLY_UNLOAD) {
1305                                                                 long id = r.ReadId ();
1306                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1307                                                                 //EventHandler.AssemblyUnload (req_id, thread_id, id);
1308                                                         } else if (kind == EventKind.TYPE_LOAD) {
1309                                                                 long id = r.ReadId ();
1310                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1311                                                                 //EventHandler.TypeLoad (req_id, thread_id, id);
1312                                                         } else if (kind == EventKind.METHOD_ENTRY) {
1313                                                                 long id = r.ReadId ();
1314                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1315                                                                 //EventHandler.MethodEntry (req_id, thread_id, id);
1316                                                         } else if (kind == EventKind.METHOD_EXIT) {
1317                                                                 long id = r.ReadId ();
1318                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1319                                                                 //EventHandler.MethodExit (req_id, thread_id, id);
1320                                                         } else if (kind == EventKind.BREAKPOINT) {
1321                                                                 long id = r.ReadId ();
1322                                                                 long loc = r.ReadLong ();
1323                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1324                                                                 //EventHandler.Breakpoint (req_id, thread_id, id, loc);
1325                                                         } else if (kind == EventKind.STEP) {
1326                                                                 long id = r.ReadId ();
1327                                                                 long loc = r.ReadLong ();
1328                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1329                                                                 //EventHandler.Step (req_id, thread_id, id, loc);
1330                                                         } else if (kind == EventKind.EXCEPTION) {
1331                                                                 long id = r.ReadId ();
1332                                                                 long loc = 0; // FIXME
1333                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1334                                                                 //EventHandler.Exception (req_id, thread_id, id, loc);
1335                                                         } else if (kind == EventKind.APPDOMAIN_CREATE) {
1336                                                                 long id = r.ReadId ();
1337                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1338                                                                 //EventHandler.AppDomainCreate (req_id, thread_id, id);
1339                                                         } else if (kind == EventKind.APPDOMAIN_UNLOAD) {
1340                                                                 long id = r.ReadId ();
1341                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id };
1342                                                                 //EventHandler.AppDomainUnload (req_id, thread_id, id);
1343                                                         } else if (kind == EventKind.USER_BREAK) {
1344                                                                 long id = 0;
1345                                                                 long loc = 0;
1346                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Id = id, Location = loc };
1347                                                                 //EventHandler.Exception (req_id, thread_id, id, loc);
1348                                                         } else if (kind == EventKind.USER_LOG) {
1349                                                                 int level = r.ReadInt ();
1350                                                                 string category = r.ReadString ();
1351                                                                 string message = r.ReadString ();
1352                                                                 events [i] = new EventInfo (etype, req_id) { ThreadId = thread_id, Level = level, Category = category, Message = message };
1353                                                                 //EventHandler.Exception (req_id, thread_id, id, loc);
1354                                                         } else if (kind == EventKind.KEEPALIVE) {
1355                                                                 events [i] = new EventInfo (etype, req_id) { };
1356                                                         } else {
1357                                                                 throw new NotImplementedException ("Unknown event kind: " + kind);
1358                                                         }
1359                                                 }
1360
1361                                                 EventHandler.Events (suspend_policy, events);
1362                                         }
1363                                 }
1364
1365                                 return true;
1366                 }
1367
1368                 internal IEventHandler EventHandler {
1369                         get; set;
1370                 }
1371
1372                 static String CommandString (CommandSet command_set, int command)
1373                 {
1374                         string cmd;
1375                         switch (command_set) {
1376                         case CommandSet.VM:
1377                                 cmd = ((CmdVM)command).ToString ();
1378                                 break;
1379                         case CommandSet.OBJECT_REF:
1380                                 cmd = ((CmdObjectRef)command).ToString ();
1381                                 break;
1382                         case CommandSet.STRING_REF:
1383                                 cmd = ((CmdStringRef)command).ToString ();
1384                                 break;
1385                         case CommandSet.THREAD:
1386                                 cmd = ((CmdThread)command).ToString ();
1387                                 break;
1388                         case CommandSet.ARRAY_REF:
1389                                 cmd = ((CmdArrayRef)command).ToString ();
1390                                 break;
1391                         case CommandSet.EVENT_REQUEST:
1392                                 cmd = ((CmdEventRequest)command).ToString ();
1393                                 break;
1394                         case CommandSet.STACK_FRAME:
1395                                 cmd = ((CmdStackFrame)command).ToString ();
1396                                 break;
1397                         case CommandSet.APPDOMAIN:
1398                                 cmd = ((CmdAppDomain)command).ToString ();
1399                                 break;
1400                         case CommandSet.ASSEMBLY:
1401                                 cmd = ((CmdAssembly)command).ToString ();
1402                                 break;
1403                         case CommandSet.METHOD:
1404                                 cmd = ((CmdMethod)command).ToString ();
1405                                 break;
1406                         case CommandSet.TYPE:
1407                                 cmd = ((CmdType)command).ToString ();
1408                                 break;
1409                         case CommandSet.MODULE:
1410                                 cmd = ((CmdModule)command).ToString ();
1411                                 break;
1412                         case CommandSet.FIELD:
1413                                 cmd = ((CmdField)command).ToString ();
1414                                 break;
1415                         case CommandSet.EVENT:
1416                                 cmd = ((CmdEvent)command).ToString ();
1417                                 break;
1418                         default:
1419                                 cmd = command.ToString ();
1420                                 break;
1421                         }
1422                         return string.Format ("[{0} {1}]", command_set, cmd);
1423                 }
1424
1425                 long total_protocol_ticks;
1426
1427                 void LogPacket (int packet_id, byte[] encoded_packet, byte[] reply_packet, CommandSet command_set, int command, Stopwatch watch) {
1428                         watch.Stop ();
1429                         total_protocol_ticks += watch.ElapsedTicks;
1430                         var ts = TimeSpan.FromTicks (total_protocol_ticks);
1431                         string msg = string.Format ("Packet: {0} sent: {1} received: {2} ms: {3} total ms: {4} {5}",
1432                            packet_id, encoded_packet.Length, reply_packet.Length, watch.ElapsedMilliseconds,
1433                            (ts.Seconds * 1000) + ts.Milliseconds,
1434                            CommandString (command_set, command));
1435
1436                         LoggingStream.WriteLine (msg);
1437                         LoggingStream.Flush ();
1438                 }
1439
1440                 bool buffer_packets;
1441                 List<byte[]> buffered_packets = new List<byte[]> ();
1442
1443                 //
1444                 // Start buffering request/response packets on both the client and the debuggee side.
1445                 // Packets sent between StartBuffering ()/StopBuffering () must be async, i.e. sent
1446                 // using Send () and not SendReceive ().
1447                 //
1448                 public void StartBuffering () {
1449                         buffer_packets = true;
1450                         if (Version.AtLeast (2, 34))
1451                                 VM_StartBuffering ();
1452                 }
1453
1454                 public void StopBuffering () {
1455                         if (Version.AtLeast (2, 34))
1456                                 VM_StopBuffering ();
1457                         buffer_packets = false;
1458
1459                         WritePackets (buffered_packets);
1460                         if (EnableConnectionLogging) {
1461                                 LoggingStream.WriteLine (String.Format ("Sent {0} packets.", buffered_packets.Count));
1462                                 LoggingStream.Flush ();
1463                         }
1464                         buffered_packets.Clear ();
1465                 }
1466
1467                 /* Send a request and call cb when a result is received */
1468                 int Send (CommandSet command_set, int command, PacketWriter packet, Action<PacketReader> cb, int count) {
1469                         int id = IdGenerator;
1470
1471                         Stopwatch watch = null;
1472                         if (EnableConnectionLogging)
1473                                 watch = Stopwatch.StartNew ();
1474
1475                         byte[] encoded_packet;
1476                         if (packet == null)
1477                                 encoded_packet = EncodePacket (id, (int)command_set, command, null, 0);
1478                         else
1479                                 encoded_packet = EncodePacket (id, (int)command_set, command, packet.Data, packet.Offset);
1480
1481                         if (cb != null) {
1482                                 lock (reply_packets_monitor) {
1483                                         reply_cbs [id] = delegate (int packet_id, byte[] p) {
1484                                                 if (EnableConnectionLogging)
1485                                                         LogPacket (packet_id, encoded_packet, p, command_set, command, watch);
1486                                                 /* Run the callback on a tp thread to avoid blocking the receive thread */
1487                                                 PacketReader r = new PacketReader (p);
1488                                                 cb.BeginInvoke (r, null, null);
1489                                         };
1490                                         reply_cb_counts [id] = count;
1491                                 }
1492                         }
1493
1494                         if (buffer_packets)
1495                                 buffered_packets.Add (encoded_packet);
1496                         else
1497                                 WritePacket (encoded_packet);
1498
1499                         return id;
1500                 }
1501
1502                 // Send a request without waiting for an answer
1503                 void Send (CommandSet command_set, int command) {
1504                         Send (command_set, command, null, null, 0);
1505                 }
1506
1507                 PacketReader SendReceive (CommandSet command_set, int command, PacketWriter packet) {
1508                         int id = IdGenerator;
1509                         Stopwatch watch = null;
1510
1511                         if (disconnected)
1512                                 throw new VMDisconnectedException ();
1513
1514                         if (EnableConnectionLogging)
1515                                 watch = Stopwatch.StartNew ();
1516
1517                         byte[] encoded_packet;
1518
1519                         if (packet == null)
1520                                 encoded_packet = EncodePacket (id, (int)command_set, command, null, 0);
1521                         else
1522                                 encoded_packet = EncodePacket (id, (int)command_set, command, packet.Data, packet.Offset);
1523
1524                         WritePacket (encoded_packet);
1525
1526                         int packetId = id;
1527
1528                         /* Wait for the reply packet */
1529                         while (true) {
1530                                 lock (reply_packets_monitor) {
1531                                         if (reply_packets.ContainsKey (packetId)) {
1532                                                 byte[] reply = reply_packets [packetId];
1533                                                 reply_packets.Remove (packetId);
1534                                                 PacketReader r = new PacketReader (reply);
1535
1536                                                 if (EnableConnectionLogging)
1537                                                         LogPacket (packetId, encoded_packet, reply, command_set, command, watch);
1538                                                 if (r.ErrorCode != 0) {
1539                                                         if (ErrorHandler != null)
1540                                                                 ErrorHandler (this, new ErrorHandlerEventArgs () { ErrorCode = (ErrorCode)r.ErrorCode });
1541                                                         throw new NotImplementedException ("No error handler set.");
1542                                                 } else {
1543                                                         return r;
1544                                                 }
1545                                         } else {
1546                                                 if (disconnected)
1547                                                         throw new VMDisconnectedException ();
1548                                                 Monitor.Wait (reply_packets_monitor);
1549                                         }
1550                                 }
1551                         }
1552                 }
1553
1554                 PacketReader SendReceive (CommandSet command_set, int command) {
1555                         return SendReceive (command_set, command, null);
1556                 }
1557
1558                 int packet_id_generator;
1559
1560                 int IdGenerator {
1561                         get {
1562                                 return Interlocked.Increment (ref packet_id_generator);
1563                         }
1564                 }
1565
1566                 CattrInfo[] ReadCattrs (PacketReader r) {
1567                         CattrInfo[] res = new CattrInfo [r.ReadInt ()];
1568                         for (int i = 0; i < res.Length; ++i) {
1569                                 CattrInfo info = new CattrInfo ();
1570                                 info.ctor_id = r.ReadId ();
1571                                 info.ctor_args = new ValueImpl [r.ReadInt ()];
1572                                 for (int j = 0; j < info.ctor_args.Length; ++j) {
1573                                         info.ctor_args [j] = r.ReadValue ();
1574                                 }
1575                                 info.named_args = new CattrNamedArgInfo [r.ReadInt ()];
1576                                 for (int j = 0; j < info.named_args.Length; ++j) {
1577                                         CattrNamedArgInfo arg = new CattrNamedArgInfo ();
1578                                         int arg_type = r.ReadByte ();
1579                                         arg.is_property = arg_type == 0x54;
1580                                         arg.id = r.ReadId ();
1581                                         arg.value = r.ReadValue ();
1582                                         info.named_args [j] = arg;
1583                                 }
1584                                 res [i] = info;
1585                         }
1586                         return res;
1587                 }
1588
1589                 static ElementType TypeCodeToElementType (TypeCode c) {
1590                         switch (c) {
1591                         case TypeCode.Boolean:
1592                                 return ElementType.Boolean;
1593                         case TypeCode.Char:
1594                                 return ElementType.Char;
1595                         case TypeCode.SByte:
1596                                 return ElementType.I1;
1597                         case TypeCode.Byte:
1598                                 return ElementType.U1;
1599                         case TypeCode.Int16:
1600                                 return ElementType.I2;
1601                         case TypeCode.UInt16:
1602                                 return ElementType.U2;
1603                         case TypeCode.Int32:
1604                                 return ElementType.I4;
1605                         case TypeCode.UInt32:
1606                                 return ElementType.U4;
1607                         case TypeCode.Int64:
1608                                 return ElementType.I8;
1609                         case TypeCode.UInt64:
1610                                 return ElementType.U8;
1611                         case TypeCode.Single:
1612                                 return ElementType.R4;
1613                         case TypeCode.Double:
1614                                 return ElementType.R8;
1615                         default:
1616                                 throw new NotImplementedException ();
1617                         }
1618                 }
1619
1620                 /*
1621                  * Implementation of debugger commands
1622                  */
1623
1624                 internal VersionInfo VM_GetVersion () {
1625                         var res = SendReceive (CommandSet.VM, (int)CmdVM.VERSION, null);
1626                         VersionInfo info = new VersionInfo ();
1627                         info.VMVersion = res.ReadString ();
1628                         info.MajorVersion = res.ReadInt ();
1629                         info.MinorVersion = res.ReadInt ();
1630                         return info;
1631                 }
1632
1633                 internal void VM_SetProtocolVersion (int major, int minor) {
1634                         SendReceive (CommandSet.VM, (int)CmdVM.SET_PROTOCOL_VERSION, new PacketWriter ().WriteInt (major).WriteInt (minor));
1635                 }
1636
1637                 internal long[] VM_GetThreads () {
1638                         var res = SendReceive (CommandSet.VM, (int)CmdVM.ALL_THREADS, null);
1639                         int len = res.ReadInt ();
1640                         long[] arr = new long [len];
1641                         for (int i = 0; i < len; ++i)
1642                                 arr [i] = res.ReadId ();
1643                         return arr;
1644                 }
1645
1646                 internal void VM_Suspend () {
1647                         SendReceive (CommandSet.VM, (int)CmdVM.SUSPEND);
1648                 }
1649
1650                 internal void VM_Resume () {
1651                         SendReceive (CommandSet.VM, (int)CmdVM.RESUME);
1652                 }
1653
1654                 internal void VM_Exit (int exitCode) {
1655                         SendReceive (CommandSet.VM, (int)CmdVM.EXIT, new PacketWriter ().WriteInt (exitCode));
1656                 }
1657
1658                 internal void VM_Dispose () {
1659                         SendReceive (CommandSet.VM, (int)CmdVM.DISPOSE);
1660                 }
1661
1662                 internal ValueImpl VM_InvokeMethod (long thread, long method, ValueImpl this_arg, ValueImpl[] arguments, InvokeFlags flags, out ValueImpl exc) {
1663                         exc = null;
1664                         PacketReader r = SendReceive (CommandSet.VM, (int)CmdVM.INVOKE_METHOD, new PacketWriter ().WriteId (thread).WriteInt ((int)flags).WriteId (method).WriteValue (this_arg).WriteInt (arguments.Length).WriteValues (arguments));
1665                         if (r.ReadByte () == 0) {
1666                                 exc = r.ReadValue ();
1667                                 return null;
1668                         } else {
1669                                 return r.ReadValue ();
1670                         }
1671                 }
1672
1673                 internal delegate void InvokeMethodCallback (ValueImpl v, ValueImpl exc, ValueImpl out_this, ValueImpl[] out_args, ErrorCode error, object state);
1674
1675                 void read_invoke_res (PacketReader r, out ValueImpl v, out ValueImpl exc, out ValueImpl out_this, out ValueImpl[] out_args) {
1676                         int resflags = r.ReadByte ();
1677                         v = null;
1678                         exc = null;
1679                         out_this = null;
1680                         out_args = null;
1681                         if (resflags == 0) {
1682                                 exc = r.ReadValue ();
1683                         } else {
1684                                 v = r.ReadValue ();
1685                                 if ((resflags & 2) != 0)
1686                                         out_this = r.ReadValue ();
1687                                 if ((resflags & 4) != 0) {
1688                                         int nargs = r.ReadInt ();
1689                                         out_args = new ValueImpl [nargs];
1690                                         for (int i = 0; i < nargs; ++i)
1691                                                 out_args [i] = r.ReadValue ();
1692                                 }
1693                         }
1694                 }
1695
1696                 internal int VM_BeginInvokeMethod (long thread, long method, ValueImpl this_arg, ValueImpl[] arguments, InvokeFlags flags, InvokeMethodCallback callback, object state) {
1697                         return Send (CommandSet.VM, (int)CmdVM.INVOKE_METHOD, new PacketWriter ().WriteId (thread).WriteInt ((int)flags).WriteId (method).WriteValue (this_arg).WriteInt (arguments.Length).WriteValues (arguments), delegate (PacketReader r) {
1698                                         ValueImpl v, exc, out_this = null;
1699                                         ValueImpl[] out_args = null;
1700
1701                                         if (r.ErrorCode != 0) {
1702                                                 callback (null, null, null, null, (ErrorCode)r.ErrorCode, state);
1703                                         } else {
1704                                                 read_invoke_res (r, out v, out exc, out out_this, out out_args);
1705                                                 callback (v, exc, out_this, out_args, 0, state);
1706                                         }
1707                                 }, 1);
1708                 }
1709
1710                 internal int VM_BeginInvokeMethods (long thread, long[] methods, ValueImpl this_arg, List<ValueImpl[]> arguments, InvokeFlags flags, InvokeMethodCallback callback, object state) {
1711                         // FIXME: Merge this with INVOKE_METHOD
1712                         var w = new PacketWriter ();
1713                         w.WriteId (thread);
1714                         w.WriteInt ((int)flags);
1715                         w.WriteInt (methods.Length);
1716                         for (int i = 0; i < methods.Length; ++i) {
1717                                 w.WriteId (methods [i]);
1718                                 w.WriteValue (this_arg);
1719                                 w.WriteInt (arguments [i].Length);
1720                                 w.WriteValues (arguments [i]);
1721                         }
1722                         return Send (CommandSet.VM, (int)CmdVM.INVOKE_METHODS, w, delegate (PacketReader r) {
1723                                         ValueImpl v, exc, out_this = null;
1724                                         ValueImpl[] out_args = null;
1725
1726                                         if (r.ErrorCode != 0) {
1727                                                 callback (null, null, null, null, (ErrorCode)r.ErrorCode, state);
1728                                         } else {
1729                                                 read_invoke_res (r, out v, out exc, out out_this, out out_args);
1730                                                 callback (v, exc, out_this, out_args, 0, state);
1731                                         }
1732                                 }, methods.Length);
1733                 }
1734
1735                 internal void VM_AbortInvoke (long thread, int id)
1736                 {
1737                         SendReceive (CommandSet.VM, (int)CmdVM.ABORT_INVOKE, new PacketWriter ().WriteId (thread).WriteInt (id));
1738                 }
1739
1740                 internal void SetSocketTimeouts (int send_timeout, int receive_timeout, int keepalive_interval)
1741                 {
1742                         TransportSetTimeouts (send_timeout, receive_timeout);
1743                         SendReceive (CommandSet.VM, (int)CmdVM.SET_KEEPALIVE, new PacketWriter ().WriteId (keepalive_interval));
1744                 }
1745
1746                 internal long[] VM_GetTypesForSourceFile (string fname, bool ignoreCase) {
1747                         var res = SendReceive (CommandSet.VM, (int)CmdVM.GET_TYPES_FOR_SOURCE_FILE, new PacketWriter ().WriteString (fname).WriteBool (ignoreCase));
1748                         int count = res.ReadInt ();
1749                         long[] types = new long [count];
1750                         for (int i = 0; i < count; ++i)
1751                                 types [i] = res.ReadId ();
1752                         return types;
1753                 }
1754
1755                 internal long[] VM_GetTypes (string name, bool ignoreCase) {
1756                         var res = SendReceive (CommandSet.VM, (int)CmdVM.GET_TYPES, new PacketWriter ().WriteString (name).WriteBool (ignoreCase));
1757                         int count = res.ReadInt ();
1758                         long[] types = new long [count];
1759                         for (int i = 0; i < count; ++i)
1760                                 types [i] = res.ReadId ();
1761                         return types;
1762                 }
1763
1764                 internal void VM_StartBuffering () {
1765                         Send (CommandSet.VM, (int)CmdVM.START_BUFFERING);
1766                 }
1767
1768                 internal void VM_StopBuffering () {
1769                         Send (CommandSet.VM, (int)CmdVM.STOP_BUFFERING);
1770                 }
1771
1772                 /*
1773                  * DOMAIN
1774                  */
1775
1776                 internal long RootDomain {
1777                         get {
1778                                 return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ROOT_DOMAIN, null).ReadId ();
1779                         }
1780                 }
1781
1782                 internal string Domain_GetName (long id) {
1783                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_FRIENDLY_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1784                 }
1785
1786                 internal long[] Domain_GetAssemblies (long id) {
1787                         var res = SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ASSEMBLIES, new PacketWriter ().WriteId (id));
1788                         int count = res.ReadInt ();
1789                         long[] assemblies = new long [count];
1790                         for (int i = 0; i < count; ++i)
1791                                 assemblies [i] = res.ReadId ();
1792                         return assemblies;
1793                 }
1794
1795                 internal long Domain_GetEntryAssembly (long id) {
1796                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ENTRY_ASSEMBLY, new PacketWriter ().WriteId (id)).ReadId ();
1797                 }
1798
1799                 internal long Domain_GetCorlib (long id) {
1800                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_CORLIB, new PacketWriter ().WriteId (id)).ReadId ();
1801                 }
1802
1803                 internal long Domain_CreateString (long id, string s) {
1804                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.CREATE_STRING, new PacketWriter ().WriteId (id).WriteString (s)).ReadId ();
1805                 }
1806
1807                 internal long Domain_CreateBoxedValue (long id, long type_id, ValueImpl v) {
1808                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.CREATE_BOXED_VALUE, new PacketWriter ().WriteId (id).WriteId (type_id).WriteValue (v)).ReadId ();
1809                 }
1810
1811                 /*
1812                  * METHOD
1813                  */
1814
1815                 internal string Method_GetName (long id) {
1816                         return SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1817                 }
1818
1819                 internal long Method_GetDeclaringType (long id) {
1820                         return SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_DECLARING_TYPE, new PacketWriter ().WriteId (id)).ReadId ();
1821                 }
1822
1823                 internal DebugInfo Method_GetDebugInfo (long id) {
1824                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_DEBUG_INFO, new PacketWriter ().WriteId (id));
1825
1826                         DebugInfo info = new DebugInfo ();
1827                         info.max_il_offset = res.ReadInt ();
1828
1829                         SourceInfo[] sources = null;
1830                         if (Version.AtLeast (2, 13)) {
1831                                 int n = res.ReadInt ();
1832                                 sources = new SourceInfo [n];
1833                                 for (int i = 0; i < n; ++i) {
1834                                         sources [i].source_file = res.ReadString ();
1835                                         if (Version.AtLeast (2, 14)) {
1836                                                 sources [i].hash = new byte [16];
1837                                                 for (int j = 0; j < 16; ++j)
1838                                                         sources [i].hash [j] = (byte)res.ReadByte ();
1839                                         }
1840                                 }
1841                         } else {
1842                                 sources = new SourceInfo [1];
1843                                 sources [0].source_file = res.ReadString ();
1844                         }
1845
1846                         int n_il_offsets = res.ReadInt ();
1847                         info.il_offsets = new int [n_il_offsets];
1848                         info.line_numbers = new int [n_il_offsets];
1849                         info.source_files = new SourceInfo [n_il_offsets];
1850                         info.column_numbers = new int [n_il_offsets];
1851                         info.end_line_numbers = new int [n_il_offsets];
1852                         info.end_column_numbers = new int [n_il_offsets];
1853                         for (int i = 0; i < n_il_offsets; ++i) {
1854                                 info.il_offsets [i] = res.ReadInt ();
1855                                 info.line_numbers [i] = res.ReadInt ();
1856                                 if (Version.AtLeast (2, 12)) {
1857                                         int idx = res.ReadInt ();
1858                                         info.source_files [i] = idx >= 0 ? sources [idx] : default (SourceInfo);
1859                                 } else {
1860                                         info.source_files [i] = sources [0];
1861                                 }
1862                                 if (Version.AtLeast (2, 19))
1863                                         info.column_numbers [i] = res.ReadInt ();
1864                                 else
1865                                         info.column_numbers [i] = 0;
1866                                 if (Version.AtLeast (2, 32)) {
1867                                         info.end_line_numbers [i] = res.ReadInt ();
1868                                         info.end_column_numbers [i] = res.ReadInt ();
1869                                 } else {
1870                                         info.end_column_numbers [i] = -1;
1871                                         info.end_column_numbers [i] = -1;
1872                                 }
1873                         }
1874
1875                         return info;
1876                 }
1877
1878                 internal ParamInfo Method_GetParamInfo (long id) {
1879                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_PARAM_INFO, new PacketWriter ().WriteId (id));
1880
1881                         ParamInfo info = new ParamInfo ();
1882                         info.call_conv = res.ReadInt ();
1883                         info.param_count = res.ReadInt ();
1884                         info.generic_param_count = res.ReadInt ();
1885                         info.ret_type = res.ReadId ();
1886                         info.param_types = new long [info.param_count];
1887                         for (int i = 0; i < info.param_count; ++i)
1888                                 info.param_types [i] = res.ReadId ();
1889                         info.param_names = new string [info.param_count];
1890                         for (int i = 0; i < info.param_count; ++i)
1891                                 info.param_names [i] = res.ReadString ();
1892
1893                         return info;
1894                 }
1895
1896                 internal LocalsInfo Method_GetLocalsInfo (long id) {
1897                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_LOCALS_INFO, new PacketWriter ().WriteId (id));
1898
1899                         LocalsInfo info = new LocalsInfo ();
1900                         int nlocals = res.ReadInt ();
1901                         info.types = new long [nlocals];
1902                         for (int i = 0; i < nlocals; ++i)
1903                                 info.types [i] = res.ReadId ();
1904                         info.names = new string [nlocals];
1905                         for (int i = 0; i < nlocals; ++i)
1906                                 info.names [i] = res.ReadString ();
1907                         info.live_range_start = new int [nlocals];
1908                         info.live_range_end = new int [nlocals];
1909                         for (int i = 0; i < nlocals; ++i) {
1910                                 info.live_range_start [i] = res.ReadInt ();
1911                                 info.live_range_end [i] = res.ReadInt ();
1912                         }
1913
1914                         return info;
1915                 }
1916
1917                 internal MethodInfo Method_GetInfo (long id) {
1918                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_INFO, new PacketWriter ().WriteId (id));
1919
1920                         MethodInfo info = new MethodInfo ();
1921                         info.attributes = res.ReadInt ();
1922                         info.iattributes = res.ReadInt ();
1923                         info.token = res.ReadInt ();
1924                         if (Version.AtLeast (2, 12)) {
1925                                 int attrs = res.ReadByte ();
1926                                 if ((attrs & (1 << 0)) != 0)
1927                                         info.is_gmd = true;
1928                                 if ((attrs & (1 << 1)) != 0)
1929                                         info.is_generic_method = true;
1930                                 info.gmd = res.ReadId ();
1931                                 if (Version.AtLeast (2, 15)) {
1932                                         if (info.is_generic_method) {
1933                                                 int n = res.ReadInt ();
1934                                                 info.type_args = res.ReadIds (n);
1935                                         }
1936                                 }
1937                         }
1938                         return info;
1939                 }
1940
1941                 internal MethodBodyInfo Method_GetBody (long id) {
1942                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_BODY, new PacketWriter ().WriteId (id));
1943
1944                         MethodBodyInfo info = new MethodBodyInfo ();
1945                         info.il = new byte [res.ReadInt ()];
1946                         for (int i = 0; i < info.il.Length; ++i)
1947                                 info.il [i] = (byte)res.ReadByte ();
1948
1949                         if (Version.AtLeast (2, 18)) {
1950                                 info.clauses = new ExceptionClauseInfo [res.ReadInt ()];
1951
1952                                 for (int i = 0; i < info.clauses.Length; ++i) {
1953                                         var clause = new ExceptionClauseInfo {
1954                                                 flags = (ExceptionClauseFlags) res.ReadInt (),
1955                                                 try_offset = res.ReadInt (),
1956                                                 try_length = res.ReadInt (),
1957                                                 handler_offset = res.ReadInt (),
1958                                                 handler_length = res.ReadInt (),
1959                                         };
1960
1961                                         if (clause.flags == ExceptionClauseFlags.None)
1962                                                 clause.catch_type_id = res.ReadId ();
1963                                         else if (clause.flags == ExceptionClauseFlags.Filter)
1964                                                 clause.filter_offset = res.ReadInt ();
1965
1966                                         info.clauses [i] = clause;
1967                                 }
1968                         } else
1969                                 info.clauses = new ExceptionClauseInfo [0];
1970
1971                         return info;
1972                 }
1973
1974                 internal ResolvedToken Method_ResolveToken (long id, int token) {
1975                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.RESOLVE_TOKEN, new PacketWriter ().WriteId (id).WriteInt (token));
1976
1977                         TokenType type = (TokenType)res.ReadByte ();
1978                         switch (type) {
1979                         case TokenType.STRING:
1980                                 return new ResolvedToken () { Type = type, Str = res.ReadString () };
1981                         case TokenType.TYPE:
1982                         case TokenType.METHOD:
1983                         case TokenType.FIELD:
1984                                 return new ResolvedToken () { Type = type, Id = res.ReadId () };
1985                         case TokenType.UNKNOWN:
1986                                 return new ResolvedToken () { Type = type };
1987                         default:
1988                                 throw new NotImplementedException ();
1989                         }
1990                 }
1991
1992                 internal CattrInfo[] Method_GetCustomAttributes (long id, long attr_type_id, bool inherit) {
1993                         PacketReader r = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_CATTRS, new PacketWriter ().WriteId (id).WriteId (attr_type_id));
1994                         return ReadCattrs (r);
1995                 }
1996
1997                 internal long Method_MakeGenericMethod (long id, long[] args) {
1998                         PacketReader r = SendReceive (CommandSet.METHOD, (int)CmdMethod.MAKE_GENERIC_METHOD, new PacketWriter ().WriteId (id).WriteInt (args.Length).WriteIds (args));
1999                         return r.ReadId ();
2000                 }
2001
2002                 /*
2003                  * THREAD
2004                  */
2005
2006                 internal string Thread_GetName (long id) {
2007                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
2008                 }
2009
2010                 internal void Thread_GetFrameInfo (long id, int start_frame, int length, Action<FrameInfo[]> resultCallaback) {
2011                         Send (CommandSet.THREAD, (int)CmdThread.GET_FRAME_INFO, new PacketWriter ().WriteId (id).WriteInt (start_frame).WriteInt (length), (res) => {
2012                                 int count = res.ReadInt ();
2013                                 var frames = new FrameInfo[count];
2014                                 for (int i = 0; i < count; ++i) {
2015                                         var f = new FrameInfo ();
2016                                         f.id = res.ReadInt ();
2017                                         f.method = res.ReadId ();
2018                                         f.il_offset = res.ReadInt ();
2019                                         f.flags = (StackFrameFlags)res.ReadByte ();
2020                                         frames [i] = f;
2021                                 }
2022                                 resultCallaback (frames);
2023                         }, 1);
2024                 }
2025
2026                 internal int Thread_GetState (long id) {
2027                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_STATE, new PacketWriter ().WriteId (id)).ReadInt ();
2028                 }
2029
2030                 internal ThreadInfo Thread_GetInfo (long id) {
2031                         PacketReader r = SendReceive (CommandSet.THREAD, (int)CmdThread.GET_INFO, new PacketWriter ().WriteId (id));
2032
2033                         ThreadInfo res = new ThreadInfo () { is_thread_pool = r.ReadByte () > 0 ? true : false };
2034
2035                         return res;
2036                 }
2037
2038                 internal long Thread_GetId (long id) {
2039                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_ID, new PacketWriter ().WriteId (id)).ReadLong ();
2040                 }
2041
2042                 internal long Thread_GetTID (long id) {
2043                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_TID, new PacketWriter ().WriteId (id)).ReadLong ();
2044                 }
2045
2046                 internal void Thread_SetIP (long id, long method_id, long il_offset) {
2047                         SendReceive (CommandSet.THREAD, (int)CmdThread.SET_IP, new PacketWriter ().WriteId (id).WriteId (method_id).WriteLong (il_offset));
2048                 }
2049
2050                 /*
2051                  * MODULE
2052                  */
2053
2054                 internal ModuleInfo Module_GetInfo (long id) {
2055                         PacketReader r = SendReceive (CommandSet.MODULE, (int)CmdModule.GET_INFO, new PacketWriter ().WriteId (id));
2056                         ModuleInfo info = new ModuleInfo { Name = r.ReadString (), ScopeName = r.ReadString (), FQName = r.ReadString (), Guid = r.ReadString (), Assembly = r.ReadId () };
2057                         return info;
2058                 }
2059
2060                 /*
2061                  * ASSEMBLY
2062                  */
2063
2064                 internal string Assembly_GetLocation (long id) {
2065                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_LOCATION, new PacketWriter ().WriteId (id)).ReadString ();
2066                 }
2067
2068                 internal long Assembly_GetEntryPoint (long id) {
2069                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_ENTRY_POINT, new PacketWriter ().WriteId (id)).ReadId ();
2070                 }
2071
2072                 internal long Assembly_GetManifestModule (long id) {
2073                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_MANIFEST_MODULE, new PacketWriter ().WriteId (id)).ReadId ();
2074                 }
2075
2076                 internal long Assembly_GetObject (long id) {
2077                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_OBJECT, new PacketWriter ().WriteId (id)).ReadId ();
2078                 }
2079
2080                 internal long Assembly_GetType (long id, string name, bool ignoreCase) {
2081                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_TYPE, new PacketWriter ().WriteId (id).WriteString (name).WriteBool (ignoreCase)).ReadId ();
2082                 }
2083
2084                 internal string Assembly_GetName (long id) {
2085                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
2086                 }
2087
2088                 /*
2089                  * TYPE
2090                  */
2091
2092                 internal TypeInfo Type_GetInfo (long id) {
2093                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INFO, new PacketWriter ().WriteId (id));
2094                         TypeInfo res = new TypeInfo ();
2095
2096                         res.ns = r.ReadString ();
2097                         res.name = r.ReadString ();
2098                         res.full_name = r.ReadString ();
2099                         res.assembly = r.ReadId ();
2100                         res.module = r.ReadId ();
2101                         res.base_type = r.ReadId ();
2102                         res.element_type = r.ReadId ();
2103                         res.token = r.ReadInt ();
2104                         res.rank = r.ReadByte ();
2105                         res.attributes = r.ReadInt ();
2106                         int b = r.ReadByte ();
2107                         res.is_byref = (b & 1) != 0;
2108                         res.is_pointer = (b & 2) != 0;
2109                         res.is_primitive = (b & 4) != 0;
2110                         res.is_valuetype = (b & 8) != 0;
2111                         res.is_enum = (b & 16) != 0;
2112                         res.is_gtd = (b & 32) != 0;
2113                         res.is_generic_type = (b & 64) != 0;
2114
2115                         int nested_len = r.ReadInt ();
2116                         res.nested = new long [nested_len];
2117                         for (int i = 0; i < nested_len; ++i)
2118                                 res.nested [i] = r.ReadId ();
2119
2120                         if (Version.AtLeast (2, 12))
2121                                 res.gtd = r.ReadId ();
2122                         if (Version.AtLeast (2, 15) && res.is_generic_type) {
2123                                 int n = r.ReadInt ();
2124                                 res.type_args = r.ReadIds (n);
2125                         }
2126
2127                         return res;
2128                 }
2129
2130                 internal long[] Type_GetMethods (long id) {
2131                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_METHODS, new PacketWriter ().WriteId (id));
2132
2133                         int n = r.ReadInt ();
2134                         long[] res = new long [n];
2135                         for (int i = 0; i < n; ++i)
2136                                 res [i] = r.ReadId ();
2137                         return res;
2138                 }
2139
2140                 internal long[] Type_GetFields (long id, out string[] names, out long[] types, out int[] attrs) {
2141                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_FIELDS, new PacketWriter ().WriteId (id));
2142
2143                         int n = r.ReadInt ();
2144                         long[] res = new long [n];
2145                         names = new string [n];
2146                         types = new long [n];
2147                         attrs = new int [n];
2148                         for (int i = 0; i < n; ++i) {
2149                                 res [i] = r.ReadId ();
2150                                 names [i] = r.ReadString ();
2151                                 types [i] = r.ReadId ();
2152                                 attrs [i] = r.ReadInt ();
2153                         }
2154                         return res;
2155                 }
2156
2157                 internal PropInfo[] Type_GetProperties (long id) {
2158                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_PROPERTIES, new PacketWriter ().WriteId (id));
2159
2160                         int n = r.ReadInt ();
2161                         PropInfo[] res = new PropInfo [n];
2162                         for (int i = 0; i < n; ++i) {
2163                                 res [i] = new PropInfo ();
2164                                 res [i].id = r.ReadId ();
2165                                 res [i].name = r.ReadString ();
2166                                 res [i].get_method = r.ReadId ();
2167                                 res [i].set_method = r.ReadId ();
2168                                 res [i].attrs = r.ReadInt ();
2169                         }
2170
2171                         return res;
2172                 }
2173
2174                 internal long Type_GetObject (long id) {
2175                         return SendReceive (CommandSet.TYPE, (int)CmdType.GET_OBJECT, new PacketWriter ().WriteId (id)).ReadId ();
2176                 }
2177
2178                 internal ValueImpl[] Type_GetValues (long id, long[] fields, long thread_id) {
2179                         int len = fields.Length;
2180                         PacketReader r;
2181                         if (thread_id != 0)
2182                                 r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_VALUES_2, new PacketWriter ().WriteId (id).WriteId (thread_id).WriteInt (len).WriteIds (fields));
2183                         else
2184                                 r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (len).WriteIds (fields));
2185
2186                         ValueImpl[] res = new ValueImpl [len];
2187                         for (int i = 0; i < len; ++i)
2188                                 res [i] = r.ReadValue ();
2189                         return res;
2190                 }
2191
2192                 internal void Type_SetValues (long id, long[] fields, ValueImpl[] values) {
2193                         SendReceive (CommandSet.TYPE, (int)CmdType.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (fields.Length).WriteIds (fields).WriteValues (values));
2194                 }
2195
2196                 internal string[] Type_GetSourceFiles (long id, bool return_full_paths) {
2197                         var r = SendReceive (CommandSet.TYPE, return_full_paths ? (int)CmdType.GET_SOURCE_FILES_2 : (int)CmdType.GET_SOURCE_FILES, new PacketWriter ().WriteId (id));
2198                         int len = r.ReadInt ();
2199                         string[] res = new string [len];
2200                         for (int i = 0; i < len; ++i)
2201                                 res [i] = r.ReadString ();
2202                         return res;
2203                 }
2204
2205                 internal bool Type_IsAssignableFrom (long id, long c_id) {
2206                         return SendReceive (CommandSet.TYPE, (int)CmdType.IS_ASSIGNABLE_FROM, new PacketWriter ().WriteId (id).WriteId (c_id)).ReadByte () > 0;
2207                 }
2208
2209                 internal CattrInfo[] Type_GetCustomAttributes (long id, long attr_type_id, bool inherit) {
2210                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_CATTRS, new PacketWriter ().WriteId (id).WriteId (attr_type_id));
2211                         return ReadCattrs (r);
2212                 }
2213
2214                 internal CattrInfo[] Type_GetFieldCustomAttributes (long id, long field_id, long attr_type_id, bool inherit) {
2215                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_FIELD_CATTRS, new PacketWriter ().WriteId (id).WriteId (field_id).WriteId (attr_type_id));
2216                         return ReadCattrs (r);
2217                 }
2218
2219                 internal CattrInfo[] Type_GetPropertyCustomAttributes (long id, long field_id, long attr_type_id, bool inherit) {
2220                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_PROPERTY_CATTRS, new PacketWriter ().WriteId (id).WriteId (field_id).WriteId (attr_type_id));
2221                         return ReadCattrs (r);
2222                 }
2223
2224                 public long[] Type_GetMethodsByNameFlags (long id, string name, int flags, bool ignoreCase) {
2225                         flags |= ignoreCase ? (int)BindingFlagsExtensions.BINDING_FLAGS_IGNORE_CASE : 0;
2226                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.CMD_TYPE_GET_METHODS_BY_NAME_FLAGS, new PacketWriter ().WriteId (id).WriteString (name).WriteInt (flags));
2227                         int len = r.ReadInt ();
2228                         long[] res = new long [len];
2229                         for (int i = 0; i < len; ++i)
2230                                 res [i] = r.ReadId ();
2231                         return res;
2232                 }
2233
2234                 internal long[] Type_GetInterfaces (long id) {
2235                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INTERFACES, new PacketWriter ().WriteId (id));
2236                         int len = r.ReadInt ();
2237                         return r.ReadIds (len);
2238                 }
2239
2240                 internal IfaceMapInfo[] Type_GetInterfaceMap (long id, long[] ids) {
2241                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INTERFACE_MAP, new PacketWriter ().WriteId (id).WriteInt (ids.Length).WriteIds (ids));
2242                         var res = new IfaceMapInfo [ids.Length];
2243                         for (int i = 0; i < ids.Length; ++i) {
2244                                 int n = r.ReadInt ();
2245
2246                                 res [i].iface_id = ids [i];
2247                                 res [i].iface_methods = r.ReadIds (n);
2248                                 res [i].target_methods = r.ReadIds (n);
2249                         }
2250
2251                         return res;
2252                 }
2253
2254                 internal bool Type_IsInitialized (long id) {
2255                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.IS_INITIALIZED, new PacketWriter ().WriteId (id));
2256                         return r.ReadInt () == 1;
2257                 }
2258
2259                 internal long Type_CreateInstance (long id) {
2260                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.CREATE_INSTANCE, new PacketWriter ().WriteId (id));
2261                         return r.ReadId ();
2262                 }
2263
2264                 /*
2265                  * FIELD
2266                  */
2267
2268                 internal FieldMirrorInfo Field_GetInfo (long id) {
2269                         PacketReader r = SendReceive (CommandSet.FIELD, (int)CmdField.GET_INFO, new PacketWriter ().WriteId (id));
2270                         FieldMirrorInfo info = new FieldMirrorInfo { Name = r.ReadString (), Parent = r.ReadId (), TypeId = r.ReadId (), Attrs = r.ReadInt () };
2271                         return info;
2272                 }
2273
2274                 /*
2275                  * EVENTS
2276                  */
2277
2278                 internal int EnableEvent (EventType etype, SuspendPolicy suspend_policy, List<Modifier> mods) {
2279                         var w = new PacketWriter ().WriteByte ((byte)etype).WriteByte ((byte)suspend_policy);
2280                         if (mods != null) {
2281                                 if (mods.Count > 255)
2282                                         throw new NotImplementedException ();
2283                                 w.WriteByte ((byte)mods.Count);
2284                                 foreach (Modifier mod in mods) {
2285                                         if (mod is CountModifier) {
2286                                                 w.WriteByte ((byte)ModifierKind.COUNT);
2287                                                 w.WriteInt ((mod as CountModifier).Count);
2288                                         } else if (mod is LocationModifier) {
2289                                                 w.WriteByte ((byte)ModifierKind.LOCATION_ONLY);
2290                                                 w.WriteId ((mod as LocationModifier).Method);
2291                                                 w.WriteLong ((mod as LocationModifier).Location);
2292                                         } else if (mod is StepModifier) {
2293                                                 w.WriteByte ((byte)ModifierKind.STEP);
2294                                                 w.WriteId ((mod as StepModifier).Thread);
2295                                                 w.WriteInt ((mod as StepModifier).Size);
2296                                                 w.WriteInt ((mod as StepModifier).Depth);
2297                                                 if (Version.AtLeast (2, 16))
2298                                                         w.WriteInt ((mod as StepModifier).Filter);
2299                                         } else if (mod is ThreadModifier) {
2300                                                 w.WriteByte ((byte)ModifierKind.THREAD_ONLY);
2301                                                 w.WriteId ((mod as ThreadModifier).Thread);
2302                                         } else if (mod is ExceptionModifier) {
2303                                                 var em = mod as ExceptionModifier;
2304                                                 w.WriteByte ((byte)ModifierKind.EXCEPTION_ONLY);
2305                                                 w.WriteId (em.Type);
2306                                                 if (Version.MajorVersion > 2 || Version.MinorVersion > 0) {
2307                                                         /* This is only supported in protocol version 2.1 */
2308                                                         w.WriteBool (em.Caught);
2309                                                         w.WriteBool (em.Uncaught);
2310                                                 } else if (!em.Caught || !em.Uncaught) {
2311                                                         throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
2312                                                 }
2313                                                 if (Version.MajorVersion > 2 || Version.MinorVersion > 24) {
2314                                                         w.WriteBool (em.Subclasses);
2315                                                 } else if (!em.Subclasses) {
2316                                                         throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
2317                                                 }
2318                                         } else if (mod is AssemblyModifier) {
2319                                                 w.WriteByte ((byte)ModifierKind.ASSEMBLY_ONLY);
2320                                                 var amod = (mod as AssemblyModifier);
2321                                                 w.WriteInt (amod.Assemblies.Length);
2322                                                 foreach (var id in amod.Assemblies)
2323                                                         w.WriteId (id);
2324                                         } else if (mod is SourceFileModifier) {
2325                                                 w.WriteByte ((byte)ModifierKind.SOURCE_FILE_ONLY);
2326                                                 var smod = (mod as SourceFileModifier);
2327                                                 w.WriteInt (smod.SourceFiles.Length);
2328                                                 foreach (var s in smod.SourceFiles)
2329                                                         w.WriteString (s);
2330                                         } else if (mod is TypeNameModifier) {
2331                                                 w.WriteByte ((byte)ModifierKind.TYPE_NAME_ONLY);
2332                                                 var tmod = (mod as TypeNameModifier);
2333                                                 w.WriteInt (tmod.TypeNames.Length);
2334                                                 foreach (var s in tmod.TypeNames)
2335                                                         w.WriteString (s);
2336                                         } else {
2337                                                 throw new NotImplementedException ();
2338                                         }
2339                                 }
2340                         } else {
2341                                 w.WriteByte (0);
2342                         }
2343                         return SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.SET, w).ReadInt ();
2344                 }
2345
2346                 internal void ClearEventRequest (EventType etype, int req_id) {
2347                         SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.CLEAR, new PacketWriter ().WriteByte ((byte)etype).WriteInt (req_id));
2348                 }
2349
2350                 internal void ClearAllBreakpoints () {
2351                         SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.CLEAR_ALL_BREAKPOINTS, new PacketWriter ());
2352                 }
2353
2354                 /*
2355                  * STACK FRAME
2356                  */
2357                 internal ValueImpl StackFrame_GetThis (long thread_id, long id) {
2358                         PacketReader r = SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_THIS, new PacketWriter ().WriteId (thread_id).WriteId (id));
2359                         return r.ReadValue ();
2360                 }
2361
2362                 internal ValueImpl[] StackFrame_GetValues (long thread_id, long id, int[] pos) {
2363                         /* pos < 0 -> argument at pos (-pos) - 1 */
2364                         /* pos >= 0 -> local at pos */
2365                         int len = pos.Length;
2366                         PacketReader r = SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_VALUES, new PacketWriter ().WriteId (thread_id).WriteId (id).WriteInt (len).WriteInts (pos));
2367
2368                         ValueImpl[] res = new ValueImpl [len];
2369                         for (int i = 0; i < len; ++i)
2370                                 res [i] = r.ReadValue ();
2371                         return res;
2372                 }
2373
2374                 internal void StackFrame_SetValues (long thread_id, long id, int[] pos, ValueImpl[] values) {
2375                         /* pos < 0 -> argument at pos (-pos) - 1 */
2376                         /* pos >= 0 -> local at pos */
2377                         int len = pos.Length;
2378                         SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.SET_VALUES, new PacketWriter ().WriteId (thread_id).WriteId (id).WriteInt (len).WriteInts (pos).WriteValues (values));
2379                 }
2380
2381                 /*
2382                  * ARRAYS
2383                  */
2384                 internal int[] Array_GetLength (long id, out int rank, out int[] lower_bounds) {
2385                         var r = SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.GET_LENGTH, new PacketWriter ().WriteId (id));
2386                         rank = r.ReadInt ();
2387                         int[] res = new int [rank];
2388                         lower_bounds = new int [rank];
2389                         for (int i = 0; i < rank; ++i) {
2390                                 res [i] = r.ReadInt ();
2391                                 lower_bounds [i] = r.ReadInt ();
2392                         }
2393                         return res;
2394                 }
2395
2396                 internal ValueImpl[] Array_GetValues (long id, int index, int len) {
2397                         var r = SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (index).WriteInt (len));
2398                         ValueImpl[] res = new ValueImpl [len];
2399                         for (int i = 0; i < len; ++i)
2400                                 res [i] = r.ReadValue ();
2401                         return res;
2402                 }
2403
2404                 internal void Array_SetValues (long id, int index, ValueImpl[] values) {
2405                         SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (index).WriteInt (values.Length).WriteValues (values));
2406                 }
2407
2408                 /*
2409                  * STRINGS
2410                  */
2411                 internal string String_GetValue (long id) {
2412                         return SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_VALUE, new PacketWriter ().WriteId (id)).ReadString ();
2413                 }
2414
2415                 internal int String_GetLength (long id) {
2416                         return (int)SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_LENGTH, new PacketWriter ().WriteId (id)).ReadLong ();
2417                 }
2418
2419                 internal char[] String_GetChars (long id, int index, int length) {
2420                         var r = SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_CHARS, new PacketWriter ().WriteId (id).WriteLong (index).WriteLong (length));
2421                         var res = new char [length];
2422                         for (int i = 0; i < length; ++i)
2423                                 res [i] = (char)r.ReadShort ();
2424                         return res;
2425                 }
2426
2427                 /*
2428                  * OBJECTS
2429                  */
2430                 internal long Object_GetType (long id) {
2431                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_TYPE, new PacketWriter ().WriteId (id)).ReadId ();
2432                 }
2433
2434                 internal long Object_GetDomain (long id) {
2435                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_DOMAIN, new PacketWriter ().WriteId (id)).ReadId ();
2436                 }
2437
2438                 internal ValueImpl[] Object_GetValues (long id, long[] fields) {
2439                         int len = fields.Length;
2440                         PacketReader r = SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (len).WriteIds (fields));
2441
2442                         ValueImpl[] res = new ValueImpl [len];
2443                         for (int i = 0; i < len; ++i)
2444                                 res [i] = r.ReadValue ();
2445                         return res;
2446                 }
2447
2448                 internal void Object_SetValues (long id, long[] fields, ValueImpl[] values) {
2449                         SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (fields.Length).WriteIds (fields).WriteValues (values));
2450                 }
2451
2452                 internal bool Object_IsCollected (long id) {
2453                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.IS_COLLECTED, new PacketWriter ().WriteId (id)).ReadInt () == 1;
2454                 }
2455
2456                 internal long Object_GetAddress (long id) {
2457                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_ADDRESS, new PacketWriter ().WriteId (id)).ReadLong ();
2458                 }
2459
2460                 internal ObjectRefInfo Object_GetInfo (long id) {
2461                         ObjectRefInfo res = new ObjectRefInfo ();
2462                         PacketReader r = SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_INFO, new PacketWriter ().WriteId (id));
2463
2464                         res.type_id = r.ReadId ();
2465                         res.domain_id = r.ReadId ();
2466                         return res;
2467                 }
2468
2469                 public void ForceDisconnect ()
2470                 {
2471                         closed = true;
2472                         disconnected = true;
2473                         TransportClose ();
2474                 }
2475         }
2476
2477         class TcpConnection : Connection
2478         {
2479                 Socket socket;
2480
2481                 internal TcpConnection (Socket socket)
2482                 {
2483                         this.socket = socket;
2484                         //socket.SetSocketOption (SocketOptionLevel.IP, SocketOptionName.NoDelay, 1);
2485                 }
2486
2487                 internal EndPoint EndPoint {
2488                         get {
2489                                 return socket.RemoteEndPoint;
2490                         }
2491                 }
2492
2493                 protected override int TransportSend (byte[] buf, int buf_offset, int len)
2494                 {
2495                         return socket.Send (buf, buf_offset, len, SocketFlags.None);
2496                 }
2497
2498                 protected override int TransportReceive (byte[] buf, int buf_offset, int len)
2499                 {
2500                         return socket.Receive (buf, buf_offset, len, SocketFlags.None);
2501                 }
2502
2503                 protected override void TransportSetTimeouts (int send_timeout, int receive_timeout)
2504                 {
2505                         socket.SendTimeout = send_timeout;
2506                         socket.ReceiveTimeout = receive_timeout;
2507                 }
2508
2509                 protected override void TransportClose ()
2510                 {
2511                         socket.Close ();
2512                 }
2513         }
2514
2515         /* This is the interface exposed by the debugger towards the debugger agent */
2516         interface IEventHandler
2517         {
2518                 void Events (SuspendPolicy suspend_policy, EventInfo[] events);
2519
2520                 void VMDisconnect (int req_id, long thread_id, string vm_uri);
2521         }
2522 }