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 Mono.Cecil.Metadata;
   9
  10 namespace Mono.Debugger.Soft
  11 {
  12         class VersionInfo {
  13                 public string VMVersion {
  14                         get; set;
  15                 }
  16
  17                 public int MajorVersion {
  18                         get; set;
  19                 }
  20
  21                 public int MinorVersion {
  22                         get; set;
  23                 }
  24         }
  25
  26         class DebugInfo {
  27                 public int max_il_offset;
  28                 public string filename;
  29                 public int[] il_offsets;
  30                 public int[] line_numbers;
  31         }
  32
  33         struct FrameInfo {
  34                 public long id;
  35                 public long method;
  36                 public int il_offset;
  37                 public StackFrameFlags flags;
  38         }
  39
  40         class TypeInfo {
  41                 public string ns, name, full_name;
  42                 public long assembly, module, base_type, element_type;
  43                 public int token, rank, attributes;
  44                 public bool is_byref, is_pointer, is_primitive, is_valuetype, is_enum;
  45                 public long[] nested;
  46         }
  47
  48         class MethodInfo {
  49                 public int attributes, iattributes, token;
  50         }
  51
  52         class MethodBodyInfo {
  53                 public byte[] il;
  54         }
  55
  56         struct ParamInfo {
  57                 public int call_conv;
  58                 public int param_count;
  59                 public int generic_param_count;
  60                 public long ret_type;
  61                 public long[] param_types;
  62                 public string[] param_names;
  63         }
  64
  65         struct LocalsInfo {
  66                 public long[] types;
  67                 public string[] names;
  68                 public int[] live_range_start;
  69                 public int[] live_range_end;
  70         }
  71
  72         struct PropInfo {
  73                 public long id;
  74                 public string name;
  75                 public long get_method, set_method;
  76                 public int attrs;
  77         }
  78
  79         class CattrNamedArgInfo {
  80                 public bool is_property;
  81                 public long id;
  82                 public ValueImpl value;
  83         }
  84
  85         class CattrInfo {
  86                 public long ctor_id;
  87                 public ValueImpl[] ctor_args;
  88                 public CattrNamedArgInfo[] named_args;
  89         }
  90
  91         class ThreadInfo {
  92                 public bool is_thread_pool;
  93         }
  94
  95         enum ValueTypeId {
  96                 VALUE_TYPE_ID_NULL = 0xf0,
  97                 VALUE_TYPE_ID_TYPE = 0xf1
  98         }
  99
 100         enum InvokeFlags {
 101                 NONE = 0x0,
 102                 DISABLE_BREAKPOINTS = 0x1,
 103                 SINGLE_THREADED = 0x2
 104         }
 105
 106         class ValueImpl {
 107                 public ElementType Type; /* or one of the VALUE_TYPE_ID constants */
 108                 public long Objid;
 109                 public object Value;
 110                 public long Klass; // For ElementType.ValueType
 111                 public ValueImpl[] Fields; // for ElementType.ValueType
 112                 public bool IsEnum; // For ElementType.ValueType
 113                 public long Id; /* For VALUE_TYPE_ID_TYPE */
 114         }
 115
 116         class ModuleInfo {
 117                 public string Name, ScopeName, FQName, Guid;
 118                 public long Assembly;
 119         }
 120
 121         enum TokenType {
 122                 STRING = 0,
 123                 TYPE = 1,
 124                 FIELD = 2,
 125                 METHOD = 3,
 126                 UNKNOWN = 4
 127         }
 128
 129         enum StackFrameFlags {
 130                 DEBUGGER_INVOKE = 1
 131         }
 132
 133         class ResolvedToken {
 134                 public TokenType Type;
 135                 public string Str;
 136                 public long Id;
 137         }
 138
 139         class Modifier {
 140         }
 141
 142         class CountModifier : Modifier {
 143                 public int Count {
 144                         get; set;
 145                 }
 146         }
 147
 148         class LocationModifier : Modifier {
 149                 public long Method {
 150                         get; set;
 151                 }
 152
 153                 public long Location {
 154                         get; set;
 155                 }
 156         }
 157
 158         class StepModifier : Modifier {
 159                 public long Thread {
 160                         get; set;
 161                 }
 162
 163                 public int Depth {
 164                         get; set;
 165                 }
 166
 167                 public int Size {
 168                         get; set;
 169                 }
 170         }
 171
 172         class ThreadModifier : Modifier {
 173                 public long Thread {
 174                         get; set;
 175                 }
 176         }
 177
 178         class ExceptionModifier : Modifier {
 179                 public long Type {
 180                         get; set;
 181                 }
 182                 public bool Caught {
 183                         get; set;
 184                 }
 185                 public bool Uncaught {
 186                         get; set;
 187                 }
 188         }
 189
 190         class AssemblyModifier : Modifier {
 191                 public long[] Assemblies {
 192                         get; set;
 193                 }
 194         }
 195
 196         public enum ErrorCode {
 197                 NONE = 0,
 198                 INVALID_OBJECT = 20,
 199                 INVALID_FIELDID = 25,
 200                 INVALID_FRAMEID = 30,
 201                 NOT_IMPLEMENTED = 100,
 202                 NOT_SUSPENDED = 101,
 203                 INVALID_ARGUMENT = 102,
 204                 ERR_UNLOADED = 103,
 205                 ERR_NO_INVOCATION = 104
 206         }
 207
 208         public class ErrorHandlerEventArgs : EventArgs {
 209
 210                 public ErrorCode ErrorCode {
 211                         get; set;
 212                 }
 213         }
 214
 215         /*
 216          * Represents the connection to the debuggee
 217          */
 218         class Connection
 219         {
 220                 /*
 221                  * The protocol and the packet format is based on JDWP, the differences
 222                  * are in the set of supported events, and the commands.
 223                  */
 224                 public const string HANDSHAKE_STRING = "DWP-Handshake";
 225
 226                 public const int HEADER_LENGTH = 11;
 227
 228                 /*
 229                  * Th version of the wire-protocol implemented by the library. The library
 230                  * and the debuggee can communicate if they implement the same major version.
 231                  * If they implement a different minor version, they can communicate, but some
 232                  * features might not be available. This allows older clients to communicate
 233                  * with newer runtimes, and vice versa.
 234                  */
 235                 public const int MAJOR_VERSION = 2;
 236                 public const int MINOR_VERSION = 1;
 237
 238                 enum WPSuspendPolicy {
 239                         NONE = 0,
 240                         EVENT_THREAD = 1,
 241                         ALL = 2
 242                 }
 243
 244                 enum CommandSet {
 245                         VM = 1,
 246                         OBJECT_REF = 9,
 247                         STRING_REF = 10,
 248                         THREAD = 11,
 249                         ARRAY_REF = 13,
 250                         EVENT_REQUEST = 15,
 251                         STACK_FRAME = 16,
 252                         APPDOMAIN = 20,
 253                         ASSEMBLY = 21,
 254                         METHOD = 22,
 255                         TYPE = 23,
 256                         MODULE = 24,
 257                         EVENT = 64
 258                 }
 259
 260                 enum EventKind {
 261                         VM_START = 0,
 262                         VM_DEATH = 1,
 263                         THREAD_START = 2,
 264                         THREAD_DEATH = 3,
 265                         APPDOMAIN_CREATE = 4, // Not in JDI
 266                         APPDOMAIN_UNLOAD = 5, // Not in JDI
 267                         METHOD_ENTRY = 6,
 268                         METHOD_EXIT = 7,
 269                         ASSEMBLY_LOAD = 8,
 270                         ASSEMBLY_UNLOAD = 9,
 271                         BREAKPOINT = 10,
 272                         STEP = 11,
 273                         TYPE_LOAD = 12,
 274                         EXCEPTION = 13
 275                 }
 276
 277                 enum ModifierKind {
 278                         COUNT = 1,
 279                         THREAD_ONLY = 3,
 280                         LOCATION_ONLY = 7,
 281                         EXCEPTION_ONLY = 8,
 282                         STEP = 10,
 283                         ASSEMBLY_ONLY = 11
 284                 }
 285
 286                 enum CmdVM {
 287                         VERSION = 1,
 288                         ALL_THREADS = 2,
 289                         SUSPEND = 3,
 290                         RESUME = 4,
 291                         EXIT = 5,
 292                         DISPOSE = 6,
 293                         INVOKE_METHOD = 7,
 294                         SET_PROTOCOL_VERSION = 8,
 295                         ABORT_INVOKE = 9
 296                 }
 297
 298                 enum CmdEvent {
 299                         COMPOSITE = 100
 300                 }
 301
 302                 enum CmdThread {
 303                         GET_FRAME_INFO = 1,
 304                         GET_NAME = 2,
 305                         GET_STATE = 3,
 306                         GET_INFO = 4
 307                 }
 308
 309                 enum CmdEventRequest {
 310                         SET = 1,
 311                         CLEAR = 2,
 312                         CLEAR_ALL_BREAKPOINTS = 3
 313                 }
 314
 315                 enum CmdAppDomain {
 316                         GET_ROOT_DOMAIN = 1,
 317                         GET_FRIENDLY_NAME = 2,
 318                         GET_ASSEMBLIES = 3,
 319                         GET_ENTRY_ASSEMBLY = 4,
 320                         CREATE_STRING = 5,
 321                         GET_CORLIB = 6,
 322                         CREATE_BOXED_VALUE = 7
 323                 }
 324
 325                 enum CmdAssembly {
 326                         GET_LOCATION = 1,
 327                         GET_ENTRY_POINT = 2,
 328                         GET_MANIFEST_MODULE = 3,
 329                         GET_OBJECT = 4,
 330                         GET_TYPE = 5,
 331                         GET_NAME = 6
 332                 }
 333
 334                 enum CmdModule {
 335                         GET_INFO = 1,
 336                 }
 337
 338                 enum CmdMethod {
 339                         GET_NAME = 1,
 340                         GET_DECLARING_TYPE = 2,
 341                         GET_DEBUG_INFO = 3,
 342                         GET_PARAM_INFO = 4,
 343                         GET_LOCALS_INFO = 5,
 344                         GET_INFO = 6,
 345                         GET_BODY = 7,
 346                         RESOLVE_TOKEN = 8
 347                 }
 348
 349                 enum CmdType {
 350                         GET_INFO = 1,
 351                         GET_METHODS = 2,
 352                         GET_FIELDS = 3,
 353                         GET_VALUES = 4,
 354                         GET_OBJECT = 5,
 355                         GET_SOURCE_FILES = 6,
 356                         SET_VALUES = 7,
 357                         IS_ASSIGNABLE_FROM = 8,
 358                         GET_PROPERTIES = 9,
 359                         GET_CATTRS = 10,
 360                         GET_FIELD_CATTRS = 11,
 361                         GET_PROPERTY_CATTRS = 12
 362                 }
 363
 364                 enum CmdStackFrame {
 365                         GET_VALUES = 1,
 366                         GET_THIS = 2,
 367                         SET_VALUES = 3
 368                 }
 369
 370                 enum CmdArrayRef {
 371                         GET_LENGTH = 1,
 372                         GET_VALUES = 2,
 373                         SET_VALUES = 3
 374                 }
 375
 376                 enum CmdStringRef {
 377                         GET_VALUE = 1
 378                 }
 379
 380                 enum CmdObjectRef {
 381                         GET_TYPE = 1,
 382                         GET_VALUES = 2,
 383                         IS_COLLECTED = 3,
 384                         GET_ADDRESS = 4,
 385                         GET_DOMAIN = 5,
 386                         SET_VALUES = 6
 387                 }
 388
 389                 class Header {
 390                         public int id;
 391                         public int command_set;
 392                         public int command;
 393                         public int flags;
 394                 }
 395
 396                 public static int GetPacketLength (byte[] header) {
 397                         int offset = 0;
 398                         return decode_int (header, ref offset);
 399                 }
 400
 401                 public static bool IsReplyPacket (byte[] packet) {
 402                         int offset = 8;
 403                         return decode_byte (packet, ref offset) == 0x80;
 404                 }
 405
 406                 public static int GetPacketId (byte[] packet) {
 407                         int offset = 4;
 408                         return decode_int (packet, ref offset);
 409                 }
 410
 411                 static int decode_byte (byte[] packet, ref int offset) {
 412                         return packet [offset++];
 413                 }
 414
 415                 static int decode_short (byte[] packet, ref int offset) {
 416                         int res = ((int)packet [offset] << 8) | (int)packet [offset + 1];
 417                         offset += 2;
 418                         return res;
 419                 }
 420
 421                 static int decode_int (byte[] packet, ref int offset) {
 422                         int res = ((int)packet [offset] << 24) | ((int)packet [offset + 1] << 16) | ((int)packet [offset + 2] << 8) | (int)packet [offset + 3];
 423                         offset += 4;
 424                         return res;
 425                 }
 426
 427                 static long decode_id (byte[] packet, ref int offset) {
 428                         return decode_int (packet, ref offset);
 429                 }
 430
 431                 static long decode_long (byte[] packet, ref int offset) {
 432                         uint high = (uint)decode_int (packet, ref offset);
 433                         uint low = (uint)decode_int (packet, ref offset);
 434
 435                         return (long)(((ulong)high << 32) | (ulong)low);
 436                 }
 437
 438                 public static SuspendPolicy decode_suspend_policy (int suspend_policy) {
 439                         switch ((WPSuspendPolicy)suspend_policy) {
 440                         case WPSuspendPolicy.NONE:
 441                                 return SuspendPolicy.None;
 442                         case WPSuspendPolicy.EVENT_THREAD:
 443                                 return SuspendPolicy.EventThread;
 444                         case WPSuspendPolicy.ALL:
 445                                 return SuspendPolicy.All;
 446                         default:
 447                                 throw new NotImplementedException ();
 448                         }
 449                 }
 450
 451                 static Header decode_command_header (byte[] packet) {
 452                         int offset = 0;
 453                         Header res = new Header ();
 454
 455                         decode_int (packet, ref offset);
 456                         res.id = decode_int (packet, ref offset);
 457                         res.flags = decode_byte (packet, ref offset);
 458                         res.command_set = decode_byte (packet, ref offset);
 459                         res.command = decode_byte (packet, ref offset);
 460
 461                         return res;
 462                 }
 463
 464                 static void encode_byte (byte[] buf, int b, ref int offset) {
 465                         buf [offset] = (byte)b;
 466                         offset ++;
 467                 }
 468
 469                 static void encode_int (byte[] buf, int i, ref int offset) {
 470                         buf [offset] = (byte)((i >> 24) & 0xff);
 471                         buf [offset + 1] = (byte)((i >> 16) & 0xff);
 472                         buf [offset + 2] = (byte)((i >> 8) & 0xff);
 473                         buf [offset + 3] = (byte)((i >> 0) & 0xff);
 474                         offset += 4;
 475                 }
 476
 477                 static void encode_id (byte[] buf, long id, ref int offset) {
 478                         encode_int (buf, (int)id, ref offset);
 479                 }
 480
 481                 static void encode_long (byte[] buf, long l, ref int offset) {
 482                         encode_int (buf, (int)((l >> 32) & 0xffffffff), ref offset);
 483                         encode_int (buf, (int)(l & 0xffffffff), ref offset);
 484                 }
 485
 486                 public static byte[] EncodePacket (int id, int commandSet, int command, byte[] data, int dataLen) {
 487                         byte[] buf = new byte [dataLen + 11];
 488                         int offset = 0;
 489
 490                         encode_int (buf, buf.Length, ref offset);
 491                         encode_int (buf, id, ref offset);
 492                         encode_byte (buf, 0, ref offset);
 493                         encode_byte (buf, commandSet, ref offset);
 494                         encode_byte (buf, command, ref offset);
 495
 496                         for (int i = 0; i < dataLen; ++i)
 497                                 buf [offset + i] = data [i];
 498
 499                         return buf;
 500                 }
 501
 502                 class PacketReader {
 503                         byte[] packet;
 504                         int offset;
 505
 506                         public PacketReader (byte[] packet) {
 507                                 this.packet = packet;
 508
 509                                 // For event packets
 510                                 Header header = decode_command_header (packet);
 511                                 CommandSet = (CommandSet)header.command_set;
 512                                 Command = header.command;
 513
 514                                 // For reply packets
 515                                 offset = 0;
 516                                 ReadInt (); // length
 517                                 ReadInt (); // id
 518                                 ReadByte (); // flags
 519                                 ErrorCode = ReadShort ();
 520                         }
 521
 522                         public CommandSet CommandSet {
 523                                 get; set;
 524                         }
 525
 526                         public int Command {
 527                                 get; set;
 528                         }
 529
 530                         public int ErrorCode {
 531                                 get; set;
 532                         }
 533
 534                         public int Offset {
 535                                 get {
 536                                         return offset;
 537                                 }
 538                         }
 539
 540                         public int ReadByte () {
 541                                 return decode_byte (packet, ref offset);
 542                         }
 543
 544                         public int ReadShort () {
 545                                 return decode_short (packet, ref offset);
 546                         }
 547
 548                         public int ReadInt () {
 549                                 return decode_int (packet, ref offset);
 550                         }
 551
 552                         public long ReadId () {
 553                                 return decode_id (packet, ref offset);
 554                         }
 555
 556                         public long ReadLong () {
 557                                 return decode_long (packet, ref offset);
 558                         }
 559
 560                         public float ReadFloat () {
 561                                 float f = DataConverter.FloatFromBE (packet, offset);
 562                                 offset += 4;
 563                                 return f;
 564                         }
 565
 566                         public double ReadDouble () {
 567                                 double d = DataConverter.DoubleFromBE (packet, offset);
 568                                 offset += 8;
 569                                 return d;
 570                         }
 571
 572                         public string ReadString () {
 573                                 int len = decode_int (packet, ref offset);
 574                                 string res = new String (Encoding.UTF8.GetChars (packet, offset, len));
 575                                 offset += len;
 576                                 return res;
 577                         }
 578
 579                         public ValueImpl ReadValue () {
 580                                 ElementType etype = (ElementType)ReadByte ();
 581
 582                                 switch (etype) {
 583                                 case ElementType.Void:
 584                                         return new ValueImpl { Type = etype };
 585                                 case ElementType.I1:
 586                                         return new ValueImpl { Type = etype, Value = (sbyte)ReadInt () };
 587                                 case ElementType.U1:
 588                                         return new ValueImpl { Type = etype, Value = (byte)ReadInt () };
 589                                 case ElementType.Boolean:
 590                                         return new ValueImpl { Type = etype, Value = ReadInt () != 0 };
 591                                 case ElementType.I2:
 592                                         return new ValueImpl { Type = etype, Value = (short)ReadInt () };
 593                                 case ElementType.U2:
 594                                         return new ValueImpl { Type = etype, Value = (ushort)ReadInt () };
 595                                 case ElementType.Char:
 596                                         return new ValueImpl { Type = etype, Value = (char)ReadInt () };
 597                                 case ElementType.I4:
 598                                         return new ValueImpl { Type = etype, Value = ReadInt () };
 599                                 case ElementType.U4:
 600                                         return new ValueImpl { Type = etype, Value = (uint)ReadInt () };
 601                                 case ElementType.I8:
 602                                         return new ValueImpl { Type = etype, Value = ReadLong () };
 603                                 case ElementType.U8:
 604                                         return new ValueImpl { Type = etype, Value = (ulong)ReadLong () };
 605                                 case ElementType.R4:
 606                                         return new ValueImpl { Type = etype, Value = ReadFloat () };
 607                                 case ElementType.R8:
 608                                         return new ValueImpl { Type = etype, Value = ReadDouble () };
 609                                 case ElementType.I:
 610                                 case ElementType.U:
 611                                 case ElementType.Ptr:
 612                                         // FIXME: The client and the debuggee might have different word sizes
 613                                         return new ValueImpl { Type = etype, Value = ReadLong () };
 614                                 case ElementType.String:
 615                                 case ElementType.SzArray:
 616                                 case ElementType.Class:
 617                                 case ElementType.Array:
 618                                 case ElementType.Object:
 619                                         long objid = ReadId ();
 620                                         return new ValueImpl () { Type = etype, Objid = objid };
 621                                 case ElementType.ValueType:
 622                                         bool is_enum = ReadByte () == 1;
 623                                         long klass = ReadId ();
 624                                         long nfields = ReadInt ();
 625                                         ValueImpl[] fields = new ValueImpl [nfields];
 626                                         for (int i = 0; i < nfields; ++i)
 627                                                 fields [i] = ReadValue ();
 628                                         return new ValueImpl () { Type = etype, Klass = klass, Fields = fields, IsEnum = is_enum };
 629                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
 630                                         return new ValueImpl { Type = etype };
 631                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_TYPE:
 632                                         return new ValueImpl () { Type = etype, Id = ReadId () };
 633                                 default:
 634                                         throw new NotImplementedException ("Unable to handle type " + etype);
 635                                 }
 636                         }
 637                 }
 638
 639                 class PacketWriter {
 640
 641                         byte[] data;
 642                         int offset;
 643
 644                         public PacketWriter () {
 645                                 // FIXME:
 646                                 data = new byte [1024];
 647                                 offset = 0;
 648                         }
 649
 650                         public PacketWriter WriteByte (byte val) {
 651                                 encode_byte (data, val, ref offset);
 652                                 return this;
 653                         }
 654
 655                         public PacketWriter WriteInt (int val) {
 656                                 encode_int (data, val, ref offset);
 657                                 return this;
 658                         }
 659
 660                         public PacketWriter WriteId (long id) {
 661                                 encode_id (data, id, ref offset);
 662                                 return this;
 663                         }
 664
 665                         public PacketWriter WriteLong (long val) {
 666                                 encode_long (data, val, ref offset);
 667                                 return this;
 668                         }
 669
 670                         public PacketWriter WriteFloat (float f) {
 671                                 byte[] b = DataConverter.GetBytesBE (f);
 672                                 for (int i = 0; i < 4; ++i)
 673                                         data [offset + i] = b [i];
 674                                 offset += 4;
 675                                 return this;
 676                         }
 677
 678                         public PacketWriter WriteDouble (double d) {
 679                                 byte[] b = DataConverter.GetBytesBE (d);
 680                                 for (int i = 0; i < 8; ++i)
 681                                         data [offset + i] = b [i];
 682                                 offset += 8;
 683                                 return this;
 684                         }
 685
 686                         public PacketWriter WriteInts (int[] ids) {
 687                                 for (int i = 0; i < ids.Length; ++i)
 688                                         WriteInt (ids [i]);
 689                                 return this;
 690                         }
 691
 692                         public PacketWriter WriteIds (long[] ids) {
 693                                 for (int i = 0; i < ids.Length; ++i)
 694                                         WriteId (ids [i]);
 695                                 return this;
 696                         }
 697
 698                         public PacketWriter WriteString (string s) {
 699                                 encode_int (data, s.Length, ref offset);
 700                                 byte[] b = Encoding.UTF8.GetBytes (s);
 701                                 Buffer.BlockCopy (b, 0, data, offset, b.Length);
 702                                 offset += b.Length;
 703                                 return this;
 704                         }
 705
 706                         public PacketWriter WriteBool (bool val) {
 707                                 WriteByte (val ? (byte)1 : (byte)0);
 708                                 return this;
 709                         }
 710
 711                         public PacketWriter WriteValue (ValueImpl v) {
 712                                 ElementType t;
 713
 714                                 if (v.Value != null)
 715                                         t = TypeCodeToElementType (Type.GetTypeCode (v.Value.GetType ()));
 716                                 else
 717                                         t = v.Type;
 718                                 WriteByte ((byte)t);
 719                                 switch (t) {
 720                                 case ElementType.Boolean:
 721                                         WriteInt ((bool)v.Value ? 1 : 0);
 722                                         break;
 723                                 case ElementType.Char:
 724                                         WriteInt ((int)(char)v.Value);
 725                                         break;
 726                                 case ElementType.I1:
 727                                         WriteInt ((int)(sbyte)v.Value);
 728                                         break;
 729                                 case ElementType.U1:
 730                                         WriteInt ((int)(byte)v.Value);
 731                                         break;
 732                                 case ElementType.I2:
 733                                         WriteInt ((int)(short)v.Value);
 734                                         break;
 735                                 case ElementType.U2:
 736                                         WriteInt ((int)(ushort)v.Value);
 737                                         break;
 738                                 case ElementType.I4:
 739                                         WriteInt ((int)(int)v.Value);
 740                                         break;
 741                                 case ElementType.U4:
 742                                         WriteInt ((int)(uint)v.Value);
 743                                         break;
 744                                 case ElementType.I8:
 745                                         WriteLong ((long)(long)v.Value);
 746                                         break;
 747                                 case ElementType.U8:
 748                                         WriteLong ((long)(ulong)v.Value);
 749                                         break;
 750                                 case ElementType.R4:
 751                                         WriteFloat ((float)v.Value);
 752                                         break;
 753                                 case ElementType.R8:
 754                                         WriteDouble ((double)v.Value);
 755                                         break;
 756                                 case ElementType.String:
 757                                 case ElementType.SzArray:
 758                                 case ElementType.Class:
 759                                 case ElementType.Array:
 760                                 case ElementType.Object:
 761                                         WriteId (v.Objid);
 762                                         break;
 763                                 case ElementType.ValueType:
 764                                         // FIXME:
 765                                         if (v.IsEnum)
 766                                                 throw new NotImplementedException ();
 767                                         WriteByte (0);
 768                                         WriteId (v.Klass);
 769                                         WriteInt (v.Fields.Length);
 770                                         for (int i = 0; i < v.Fields.Length; ++i)
 771                                                 WriteValue (v.Fields [i]);
 772                                         break;
 773                                 case (ElementType)ValueTypeId.VALUE_TYPE_ID_NULL:
 774                                         break;
 775                                 default:
 776                                         throw new NotImplementedException ();
 777                                 }
 778
 779                                 return this;
 780                         }
 781
 782                         public PacketWriter WriteValues (ValueImpl[] values) {
 783                                 for (int i = 0; i < values.Length; ++i)
 784                                         WriteValue (values [i]);
 785                                 return this;
 786                         }
 787
 788                         public byte[] Data {
 789                                 get {
 790                                         return data;
 791                                 }
 792                         }
 793
 794                         public int Offset {
 795                                 get {
 796                                         return offset;
 797                                 }
 798                         }
 799                 }
 800
 801                 delegate void ReplyCallback (int packet_id, byte[] packet);
 802
 803                 Socket socket;
 804                 bool closed;
 805                 Thread receiver_thread;
 806                 Dictionary<int, byte[]> reply_packets;
 807                 Dictionary<int, ReplyCallback> reply_cbs;
 808                 object reply_packets_monitor;
 809
 810                 public event EventHandler<ErrorHandlerEventArgs> ErrorHandler;
 811
 812                 public Connection (Socket socket) {
 813                         this.socket = socket;
 814                         //socket.SetSocketOption (SocketOptionLevel.IP, SocketOptionName.NoDelay, 1);
 815                         closed = false;
 816                         reply_packets = new Dictionary<int, byte[]> ();
 817                         reply_cbs = new Dictionary<int, ReplyCallback> ();
 818                         reply_packets_monitor = new Object ();
 819                 }
 820
 821                 int Receive (byte[] buf, int buf_offset, int len) {
 822                         int offset = 0;
 823
 824                         while (offset < len) {
 825                                 int n = socket.Receive (buf, buf_offset + offset, len - offset, SocketFlags.None);
 826
 827                                 if (n == 0)
 828                                         return offset;
 829                                 offset += n;
 830                         }
 831
 832                         return offset;
 833                 }
 834
 835                 public VersionInfo Version;
 836
 837                 // Do the wire protocol handshake
 838                 public void Connect () {
 839                         byte[] buf = new byte [HANDSHAKE_STRING.Length];
 840                         char[] cbuf = new char [buf.Length];
 841
 842                         // FIXME: Add a timeout
 843                         int n = Receive (buf, 0, buf.Length);
 844                         if (n == 0)
 845                                 throw new IOException ("DWP Handshake failed.");
 846                         for (int i = 0; i < buf.Length; ++i)
 847                                 cbuf [i] = (char)buf [i];
 848
 849                         if (new String (cbuf) != HANDSHAKE_STRING)
 850                                 throw new IOException ("DWP Handshake failed.");
 851
 852                         socket.Send (buf);
 853
 854                         receiver_thread = new Thread (new ThreadStart (receiver_thread_main));
 855                         receiver_thread.Start ();
 856
 857                         Version = VM_GetVersion ();
 858
 859                         //
 860                         // Tell the debuggee our protocol version, so newer debuggees can work
 861                         // with older clients
 862                         //
 863
 864                         //
 865                         // Older debuggees might not support this request
 866                         EventHandler<ErrorHandlerEventArgs> OrigErrorHandler = ErrorHandler;
 867                         ErrorHandler = null;
 868                         ErrorHandler += delegate (object sender, ErrorHandlerEventArgs args) {
 869                                 throw new NotSupportedException ();
 870                         };
 871                         try {
 872                                 VM_SetProtocolVersion (MAJOR_VERSION, MINOR_VERSION);
 873                         } catch (NotSupportedException) {
 874                         }
 875                         ErrorHandler = OrigErrorHandler;
 876                 }
 877
 878                 public EndPoint EndPoint {
 879                         get {
 880                                 return socket.RemoteEndPoint;
 881                         }
 882                 }
 883
 884                 public byte[] ReadPacket () {
 885                         // FIXME: Throw ClosedConnectionException () if the connection is closed
 886                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
 887                         // FIXME: Locking
 888                         byte[] header = new byte [HEADER_LENGTH];
 889
 890                         int len = Receive (header, 0, header.Length);
 891                         if (len == 0)
 892                                 return new byte [0];
 893                         if (len != HEADER_LENGTH) {
 894                                 // FIXME:
 895                                 throw new IOException ("Packet of length " + len + " is read.");
 896                         }
 897
 898                         int packetLength = GetPacketLength (header);
 899                         if (packetLength < 11)
 900                                 throw new IOException ("Invalid packet length.");
 901
 902                         if (packetLength == 11) {
 903                                 return header;
 904                         } else {
 905                                 byte[] buf = new byte [packetLength];
 906                                 for (int i = 0; i < header.Length; ++i)
 907                                         buf [i] = header [i];
 908                                 len = Receive (buf, header.Length, packetLength - header.Length);
 909                                 if (len != packetLength - header.Length)
 910                                         throw new IOException ();
 911                                 return buf;
 912                         }
 913                 }
 914
 915                 public void WritePacket (byte[] packet) {
 916                         // FIXME: Throw ClosedConnectionException () if the connection is closed
 917                         // FIXME: Throw ClosedConnectionException () if another thread closes the connection
 918                         // FIXME: Locking
 919                         socket.Send (packet);
 920                 }
 921
 922                 public void Close () {
 923                         closed = true;
 924                 }
 925
 926                 public bool IsClosed {
 927                         get {
 928                                 return closed;
 929                         }
 930                 }
 931
 932                 bool disconnected;
 933
 934                 void receiver_thread_main () {
 935                         while (true) {
 936                                 try {
 937                                         bool res = ReceivePacket ();
 938                                         if (!res)
 939                                                 break;
 940                                 } catch (Exception ex) {
 941                                         Console.WriteLine (ex);
 942                                         break;
 943                                 }
 944                         }
 945
 946                         lock (reply_packets_monitor) {
 947                                 disconnected = true;
 948                                 Monitor.PulseAll (reply_packets_monitor);
 949                         }
 950                         EventHandler.VMDisconnect (0, 0, null);
 951                 }
 952
 953                 bool ReceivePacket () {
 954                                 byte[] packet = ReadPacket ();
 955
 956                                 if (packet.Length == 0) {
 957                                         return false;
 958                                 }
 959
 960                                 if (IsReplyPacket (packet)) {
 961                                         int id = GetPacketId (packet);
 962                                         ReplyCallback cb = null;
 963                                         lock (reply_packets_monitor) {
 964                                                 reply_cbs.TryGetValue (id, out cb);
 965                                                 if (cb == null) {
 966                                                         reply_packets [id] = packet;
 967                                                         Monitor.PulseAll (reply_packets_monitor);
 968                                                 }
 969                                         }
 970
 971                                         if (cb != null)
 972                                                 cb.Invoke (id, packet);
 973                                 } else {
 974                                         PacketReader r = new PacketReader (packet);
 975
 976                                         if (r.CommandSet == CommandSet.EVENT && r.Command == (int)CmdEvent.COMPOSITE) {
 977                                                 r.ReadByte (); // suspend_policy
 978                                                 int nevents = r.ReadInt ();
 979
 980                                                 for (int i = 0; i < nevents; ++i) {
 981                                                         EventKind kind = (EventKind)r.ReadByte ();
 982                                                         int req_id = r.ReadInt ();
 983
 984                                                         if (kind == EventKind.VM_START) {
 985                                                                 long thread_id = r.ReadId ();
 986                                                                 EventHandler.VMStart (req_id, thread_id, null);
 987                                                         } else if (kind == EventKind.VM_DEATH) {
 988                                                                 EventHandler.VMDeath (req_id, 0, null);
 989                                                         } else if (kind == EventKind.THREAD_START) {
 990                                                                 long thread_id = r.ReadId ();
 991                                                                 EventHandler.ThreadStart (req_id, thread_id, thread_id);
 992                                                         } else if (kind == EventKind.THREAD_DEATH) {
 993                                                                 long thread_id = r.ReadId ();
 994                                                                 EventHandler.ThreadDeath (req_id, thread_id, thread_id);
 995                                                         } else if (kind == EventKind.ASSEMBLY_LOAD) {
 996                                                                 long thread_id = r.ReadId ();
 997                                                                 long id = r.ReadId ();
 998                                                                 EventHandler.AssemblyLoad (req_id, thread_id, id);
 999                                                         } else if (kind == EventKind.ASSEMBLY_UNLOAD) {
1000                                                                 long thread_id = r.ReadId ();
1001                                                                 long id = r.ReadId ();
1002                                                                 EventHandler.AssemblyUnload (req_id, thread_id, id);
1003                                                         } else if (kind == EventKind.TYPE_LOAD) {
1004                                                                 long thread_id = r.ReadId ();
1005                                                                 long id = r.ReadId ();
1006                                                                 EventHandler.TypeLoad (req_id, thread_id, id);
1007                                                         } else if (kind == EventKind.METHOD_ENTRY) {
1008                                                                 long thread_id = r.ReadId ();
1009                                                                 long id = r.ReadId ();
1010                                                                 EventHandler.MethodEntry (req_id, thread_id, id);
1011                                                         } else if (kind == EventKind.METHOD_EXIT) {
1012                                                                 long thread_id = r.ReadId ();
1013                                                                 long id = r.ReadId ();
1014                                                                 EventHandler.MethodExit (req_id, thread_id, id);
1015                                                         } else if (kind == EventKind.BREAKPOINT) {
1016                                                                 long thread_id = r.ReadId ();
1017                                                                 long id = r.ReadId ();
1018                                                                 long loc = r.ReadLong ();
1019                                                                 EventHandler.Breakpoint (req_id, thread_id, id, loc);
1020                                                         } else if (kind == EventKind.STEP) {
1021                                                                 long thread_id = r.ReadId ();
1022                                                                 long id = r.ReadId ();
1023                                                                 long loc = r.ReadLong ();
1024                                                                 EventHandler.Step (req_id, thread_id, id, loc);
1025                                                         } else if (kind == EventKind.EXCEPTION) {
1026                                                                 long thread_id = r.ReadId ();
1027                                                                 long id = r.ReadId ();
1028                                                                 long loc = 0; // FIXME
1029                                                                 EventHandler.Exception (req_id, thread_id, id, loc);
1030                                                         } else if (kind == EventKind.APPDOMAIN_CREATE) {
1031                                                                 long thread_id = r.ReadId ();
1032                                                                 long id = r.ReadId ();
1033                                                                 EventHandler.AppDomainCreate (req_id, thread_id, id);
1034                                                         } else if (kind == EventKind.APPDOMAIN_UNLOAD) {
1035                                                                 long thread_id = r.ReadId ();
1036                                                                 long id = r.ReadId ();
1037                                                                 EventHandler.AppDomainUnload (req_id, thread_id, id);
1038                                                         } else {
1039                                                                 throw new NotImplementedException ("Unknown event kind: " + kind);
1040                                                         }
1041                                                 }
1042                                         }
1043                                 }
1044
1045                                 return true;
1046                 }
1047
1048                 public IEventHandler EventHandler {
1049                         get; set;
1050                 }
1051
1052                 /* Send a request and call cb when a result is received */
1053                 int Send (CommandSet command_set, int command, PacketWriter packet, Action<PacketReader> cb) {
1054                         int id = IdGenerator;
1055
1056                         lock (reply_packets_monitor) {
1057                                 reply_cbs [id] = delegate (int packet_id, byte[] p) {
1058                                         /* Run the callback on a tp thread to avoid blocking the receive thread */
1059                                         PacketReader r = new PacketReader (p);
1060                                         cb.BeginInvoke (r, null, null);
1061                                 };
1062                         }
1063
1064                         if (packet == null)
1065                                 WritePacket (EncodePacket (id, (int)command_set, command, null, 0));
1066                         else
1067                                 WritePacket (EncodePacket (id, (int)command_set, command, packet.Data, packet.Offset));
1068
1069                         return id;
1070                 }
1071
1072                 PacketReader SendReceive (CommandSet command_set, int command, PacketWriter packet) {
1073                         int id = IdGenerator;
1074
1075                         if (packet == null)
1076                                 WritePacket (EncodePacket (id, (int)command_set, command, null, 0));
1077                         else
1078                                 WritePacket (EncodePacket (id, (int)command_set, command, packet.Data, packet.Offset));
1079
1080                         int packetId = id;
1081
1082                         /* Wait for the reply packet */
1083                         while (true) {
1084                                 lock (reply_packets_monitor) {
1085                                         if (reply_packets.ContainsKey (packetId)) {
1086                                                 byte[] reply = reply_packets [packetId];
1087                                                 reply_packets.Remove (packetId);
1088                                                 PacketReader r = new PacketReader (reply);
1089                                                 if (r.ErrorCode != 0) {
1090                                                         if (ErrorHandler != null)
1091                                                                 ErrorHandler (this, new ErrorHandlerEventArgs () { ErrorCode = (ErrorCode)r.ErrorCode });
1092                                                         throw new NotImplementedException ("No error handler set.");
1093                                                 } else {
1094                                                         return r;
1095                                                 }
1096                                         } else {
1097                                                 if (disconnected)
1098                                                         throw new VMDisconnectedException ();
1099                                                 Monitor.Wait (reply_packets_monitor);
1100                                         }
1101                                 }
1102                         }
1103                 }
1104
1105                 PacketReader SendReceive (CommandSet command_set, int command) {
1106                         return SendReceive (command_set, command, null);
1107                 }
1108
1109                 int packet_id_generator;
1110
1111                 int IdGenerator {
1112                         get {
1113                                 return Interlocked.Increment (ref packet_id_generator);
1114                         }
1115                 }
1116
1117                 CattrInfo[] ReadCattrs (PacketReader r) {
1118                         CattrInfo[] res = new CattrInfo [r.ReadInt ()];
1119                         for (int i = 0; i < res.Length; ++i) {
1120                                 CattrInfo info = new CattrInfo ();
1121                                 info.ctor_id = r.ReadId ();
1122                                 info.ctor_args = new ValueImpl [r.ReadInt ()];
1123                                 for (int j = 0; j < info.ctor_args.Length; ++j) {
1124                                         info.ctor_args [j] = r.ReadValue ();
1125                                 }
1126                                 info.named_args = new CattrNamedArgInfo [r.ReadInt ()];
1127                                 for (int j = 0; j < info.named_args.Length; ++j) {
1128                                         CattrNamedArgInfo arg = new CattrNamedArgInfo ();
1129                                         int arg_type = r.ReadByte ();
1130                                         arg.is_property = arg_type == 0x54;
1131                                         arg.id = r.ReadId ();
1132                                         arg.value = r.ReadValue ();
1133                                         info.named_args [j] = arg;
1134                                 }
1135                                 res [i] = info;
1136                         }
1137                         return res;
1138                 }
1139
1140                 static ElementType TypeCodeToElementType (TypeCode c) {
1141                         switch (c) {
1142                         case TypeCode.Boolean:
1143                                 return ElementType.Boolean;
1144                         case TypeCode.Char:
1145                                 return ElementType.Char;
1146                         case TypeCode.SByte:
1147                                 return ElementType.I1;
1148                         case TypeCode.Byte:
1149                                 return ElementType.U1;
1150                         case TypeCode.Int16:
1151                                 return ElementType.I2;
1152                         case TypeCode.UInt16:
1153                                 return ElementType.U2;
1154                         case TypeCode.Int32:
1155                                 return ElementType.I4;
1156                         case TypeCode.UInt32:
1157                                 return ElementType.U4;
1158                         case TypeCode.Int64:
1159                                 return ElementType.I8;
1160                         case TypeCode.UInt64:
1161                                 return ElementType.U8;
1162                         case TypeCode.Single:
1163                                 return ElementType.R4;
1164                         case TypeCode.Double:
1165                                 return ElementType.R8;
1166                         default:
1167                                 throw new NotImplementedException ();
1168                         }
1169                 }
1170
1171                 /*
1172                  * Implementation of debugger commands
1173                  */
1174
1175                 public VersionInfo VM_GetVersion () {
1176                         var res = SendReceive (CommandSet.VM, (int)CmdVM.VERSION, null);
1177                         VersionInfo info = new VersionInfo ();
1178                         info.VMVersion = res.ReadString ();
1179                         info.MajorVersion = res.ReadInt ();
1180                         info.MinorVersion = res.ReadInt ();
1181                         return info;
1182                 }
1183
1184                 public void VM_SetProtocolVersion (int major, int minor) {
1185                         SendReceive (CommandSet.VM, (int)CmdVM.SET_PROTOCOL_VERSION, new PacketWriter ().WriteInt (major).WriteInt (minor));
1186                 }
1187
1188                 public long[] VM_GetThreads () {
1189                         var res = SendReceive (CommandSet.VM, (int)CmdVM.ALL_THREADS, null);
1190                         int len = res.ReadInt ();
1191                         long[] arr = new long [len];
1192                         for (int i = 0; i < len; ++i)
1193                                 arr [i] = res.ReadId ();
1194                         return arr;
1195                 }
1196
1197                 public void VM_Suspend () {
1198                         SendReceive (CommandSet.VM, (int)CmdVM.SUSPEND);
1199                 }
1200
1201                 public void VM_Resume () {
1202                         SendReceive (CommandSet.VM, (int)CmdVM.RESUME);
1203                 }
1204
1205                 public void VM_Exit (int exitCode) {
1206                         SendReceive (CommandSet.VM, (int)CmdVM.EXIT, new PacketWriter ().WriteInt (exitCode));
1207                 }
1208
1209                 public void VM_Dispose () {
1210                         SendReceive (CommandSet.VM, (int)CmdVM.DISPOSE);
1211                 }
1212
1213                 public ValueImpl VM_InvokeMethod (long thread, long method, ValueImpl this_arg, ValueImpl[] arguments, InvokeFlags flags, out ValueImpl exc) {
1214                         exc = null;
1215                         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));
1216                         if (r.ReadByte () == 0) {
1217                                 exc = r.ReadValue ();
1218                                 return null;
1219                         } else {
1220                                 return r.ReadValue ();
1221                         }
1222                 }
1223
1224                 public delegate void InvokeMethodCallback (ValueImpl v, ValueImpl exc, ErrorCode error, object state);
1225
1226                 public int VM_BeginInvokeMethod (long thread, long method, ValueImpl this_arg, ValueImpl[] arguments, InvokeFlags flags, InvokeMethodCallback callback, object state) {
1227                         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) {
1228                                         ValueImpl v, exc;
1229
1230                                         if (r.ErrorCode != 0) {
1231                                                 callback (null, null, (ErrorCode)r.ErrorCode, state);
1232                                         } else {
1233                                                 if (r.ReadByte () == 0) {
1234                                                         exc = r.ReadValue ();
1235                                                         v = null;
1236                                                 } else {
1237                                                         v = r.ReadValue ();
1238                                                         exc = null;
1239                                                 }
1240
1241                                                 callback (v, exc, 0, state);
1242                                         }
1243                                 });
1244                 }
1245
1246                 public void VM_AbortInvoke (long thread, int id)
1247                 {
1248                         SendReceive (CommandSet.VM, (int)CmdVM.ABORT_INVOKE, new PacketWriter ().WriteId (thread).WriteInt (id));
1249                 }
1250
1251                 /*
1252                  * DOMAIN
1253                  */
1254
1255                 public long RootDomain {
1256                         get {
1257                                 return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ROOT_DOMAIN, null).ReadId ();
1258                         }
1259                 }
1260
1261                 public string Domain_GetName (long id) {
1262                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_FRIENDLY_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1263                 }
1264
1265                 public long[] Domain_GetAssemblies (long id) {
1266                         var res = SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ASSEMBLIES, new PacketWriter ().WriteId (id));
1267                         int count = res.ReadInt ();
1268                         long[] assemblies = new long [count];
1269                         for (int i = 0; i < count; ++i)
1270                                 assemblies [i] = res.ReadId ();
1271                         return assemblies;
1272                 }
1273
1274                 public long Domain_GetEntryAssembly (long id) {
1275                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_ENTRY_ASSEMBLY, new PacketWriter ().WriteId (id)).ReadId ();
1276                 }
1277
1278                 public long Domain_GetCorlib (long id) {
1279                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.GET_CORLIB, new PacketWriter ().WriteId (id)).ReadId ();
1280                 }
1281
1282                 public long Domain_CreateString (long id, string s) {
1283                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.CREATE_STRING, new PacketWriter ().WriteId (id).WriteString (s)).ReadId ();
1284                 }
1285
1286                 public long Domain_CreateBoxedValue (long id, long type_id, ValueImpl v) {
1287                         return SendReceive (CommandSet.APPDOMAIN, (int)CmdAppDomain.CREATE_BOXED_VALUE, new PacketWriter ().WriteId (id).WriteId (type_id).WriteValue (v)).ReadId ();
1288                 }
1289
1290                 /*
1291                  * METHOD
1292                  */
1293
1294                 public string Method_GetName (long id) {
1295                         return SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1296                 }
1297
1298                 public long Method_GetDeclaringType (long id) {
1299                         return SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_DECLARING_TYPE, new PacketWriter ().WriteId (id)).ReadId ();
1300                 }
1301
1302                 public DebugInfo Method_GetDebugInfo (long id) {
1303                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_DEBUG_INFO, new PacketWriter ().WriteId (id));
1304
1305                         DebugInfo info = new DebugInfo ();
1306                         info.max_il_offset = res.ReadInt ();
1307                         info.filename = res.ReadString ();
1308
1309                         int n_il_offsets = res.ReadInt ();
1310                         info.il_offsets = new int [n_il_offsets];
1311                         info.line_numbers = new int [n_il_offsets];
1312                         for (int i = 0; i < n_il_offsets; ++i) {
1313                                 info.il_offsets [i] = res.ReadInt ();
1314                                 info.line_numbers [i] = res.ReadInt ();
1315                         }
1316
1317                         return info;
1318                 }
1319
1320                 public ParamInfo Method_GetParamInfo (long id) {
1321                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_PARAM_INFO, new PacketWriter ().WriteId (id));
1322
1323                         ParamInfo info = new ParamInfo ();
1324                         info.call_conv = res.ReadInt ();
1325                         info.param_count = res.ReadInt ();
1326                         info.generic_param_count = res.ReadInt ();
1327                         info.ret_type = res.ReadId ();
1328                         info.param_types = new long [info.param_count];
1329                         for (int i = 0; i < info.param_count; ++i)
1330                                 info.param_types [i] = res.ReadId ();
1331                         info.param_names = new string [info.param_count];
1332                         for (int i = 0; i < info.param_count; ++i)
1333                                 info.param_names [i] = res.ReadString ();
1334
1335                         return info;
1336                 }
1337
1338                 public LocalsInfo Method_GetLocalsInfo (long id) {
1339                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_LOCALS_INFO, new PacketWriter ().WriteId (id));
1340
1341                         LocalsInfo info = new LocalsInfo ();
1342                         int nlocals = res.ReadInt ();
1343                         info.types = new long [nlocals];
1344                         for (int i = 0; i < nlocals; ++i)
1345                                 info.types [i] = res.ReadId ();
1346                         info.names = new string [nlocals];
1347                         for (int i = 0; i < nlocals; ++i)
1348                                 info.names [i] = res.ReadString ();
1349                         info.live_range_start = new int [nlocals];
1350                         info.live_range_end = new int [nlocals];
1351                         for (int i = 0; i < nlocals; ++i) {
1352                                 info.live_range_start [i] = res.ReadInt ();
1353                                 info.live_range_end [i] = res.ReadInt ();
1354                         }
1355
1356                         return info;
1357                 }
1358
1359                 public MethodInfo Method_GetInfo (long id) {
1360                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_INFO, new PacketWriter ().WriteId (id));
1361
1362                         MethodInfo info = new MethodInfo ();
1363                         info.attributes = res.ReadInt ();
1364                         info.iattributes = res.ReadInt ();
1365                         info.token = res.ReadInt ();
1366
1367                         return info;
1368                 }
1369
1370                 public MethodBodyInfo Method_GetBody (long id) {
1371                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.GET_BODY, new PacketWriter ().WriteId (id));
1372
1373                         MethodBodyInfo info = new MethodBodyInfo ();
1374                         info.il = new byte [res.ReadInt ()];
1375                         for (int i = 0; i < info.il.Length; ++i)
1376                                 info.il [i] = (byte)res.ReadByte ();
1377
1378                         return info;
1379                 }
1380
1381                 public ResolvedToken Method_ResolveToken (long id, int token) {
1382                         var res = SendReceive (CommandSet.METHOD, (int)CmdMethod.RESOLVE_TOKEN, new PacketWriter ().WriteId (id).WriteInt (token));
1383
1384                         TokenType type = (TokenType)res.ReadByte ();
1385                         switch (type) {
1386                         case TokenType.STRING:
1387                                 return new ResolvedToken () { Type = type, Str = res.ReadString () };
1388                         case TokenType.TYPE:
1389                         case TokenType.METHOD:
1390                         case TokenType.FIELD:
1391                                 return new ResolvedToken () { Type = type, Id = res.ReadId () };
1392                         case TokenType.UNKNOWN:
1393                                 return new ResolvedToken () { Type = type };
1394                         default:
1395                                 throw new NotImplementedException ();
1396                         }
1397                 }
1398
1399                 /*
1400                  * THREAD
1401                  */
1402
1403                 public string Thread_GetName (long id) {
1404                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1405                 }
1406
1407                 public FrameInfo[] Thread_GetFrameInfo (long id, int start_frame, int length) {
1408                         var res = SendReceive (CommandSet.THREAD, (int)CmdThread.GET_FRAME_INFO, new PacketWriter ().WriteId (id).WriteInt (start_frame).WriteInt (length));
1409                         int count = res.ReadInt ();
1410
1411                         var frames = new FrameInfo [count];
1412                         for (int i = 0; i < count; ++i) {
1413                                 frames [i].id = res.ReadInt ();
1414                                 frames [i].method = res.ReadId ();
1415                                 frames [i].il_offset = res.ReadInt ();
1416                                 frames [i].flags = (StackFrameFlags)res.ReadByte ();
1417                         }
1418                         return frames;
1419                 }
1420
1421                 public int Thread_GetState (long id) {
1422                         return SendReceive (CommandSet.THREAD, (int)CmdThread.GET_STATE, new PacketWriter ().WriteId (id)).ReadInt ();
1423                 }
1424
1425                 public ThreadInfo Thread_GetInfo (long id) {
1426                         PacketReader r = SendReceive (CommandSet.THREAD, (int)CmdThread.GET_INFO, new PacketWriter ().WriteId (id));
1427
1428                         ThreadInfo res = new ThreadInfo () { is_thread_pool = r.ReadByte () > 0 ? true : false };
1429
1430                         return res;
1431                 }
1432
1433                 /*
1434                  * MODULE
1435                  */
1436
1437                 public ModuleInfo Module_GetInfo (long id) {
1438                         PacketReader r = SendReceive (CommandSet.MODULE, (int)CmdModule.GET_INFO, new PacketWriter ().WriteId (id));
1439                         ModuleInfo info = new ModuleInfo { Name = r.ReadString (), ScopeName = r.ReadString (), FQName = r.ReadString (), Guid = r.ReadString (), Assembly = r.ReadId () };
1440                         return info;
1441                 }
1442
1443                 /*
1444                  * ASSEMBLY
1445                  */
1446
1447                 public string Assembly_GetLocation (long id) {
1448                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_LOCATION, new PacketWriter ().WriteId (id)).ReadString ();
1449                 }
1450
1451                 public long Assembly_GetEntryPoint (long id) {
1452                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_ENTRY_POINT, new PacketWriter ().WriteId (id)).ReadId ();
1453                 }
1454
1455                 public long Assembly_GetManifestModule (long id) {
1456                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_MANIFEST_MODULE, new PacketWriter ().WriteId (id)).ReadId ();
1457                 }
1458
1459                 public long Assembly_GetObject (long id) {
1460                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_OBJECT, new PacketWriter ().WriteId (id)).ReadId ();
1461                 }
1462
1463                 public long Assembly_GetType (long id, string name, bool ignoreCase) {
1464                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_TYPE, new PacketWriter ().WriteId (id).WriteString (name).WriteBool (ignoreCase)).ReadId ();
1465                 }
1466
1467                 public string Assembly_GetName (long id) {
1468                         return SendReceive (CommandSet.ASSEMBLY, (int)CmdAssembly.GET_NAME, new PacketWriter ().WriteId (id)).ReadString ();
1469                 }
1470
1471                 /*
1472                  * TYPE
1473                  */
1474
1475                 public TypeInfo Type_GetInfo (long id) {
1476                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_INFO, new PacketWriter ().WriteId (id));
1477                         TypeInfo res = new TypeInfo ();
1478
1479                         res.ns = r.ReadString ();
1480                         res.name = r.ReadString ();
1481                         res.full_name = r.ReadString ();
1482                         res.assembly = r.ReadId ();
1483                         res.module = r.ReadId ();
1484                         res.base_type = r.ReadId ();
1485                         res.element_type = r.ReadId ();
1486                         res.token = r.ReadInt ();
1487                         res.rank = r.ReadByte ();
1488                         res.attributes = r.ReadInt ();
1489                         int b = r.ReadByte ();
1490                         res.is_byref = (b & 1) != 0;
1491                         res.is_pointer = (b & 2) != 0;
1492                         res.is_primitive = (b & 4) != 0;
1493                         res.is_valuetype = (b & 8) != 0;
1494                         res.is_enum = (b & 16) != 0;
1495
1496                         int nested_len = r.ReadInt ();
1497                         res.nested = new long [nested_len];
1498                         for (int i = 0; i < nested_len; ++i)
1499                                 res.nested [i] = r.ReadId ();
1500
1501                         return res;
1502                 }
1503
1504                 public long[] Type_GetMethods (long id) {
1505                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_METHODS, new PacketWriter ().WriteId (id));
1506
1507                         int n = r.ReadInt ();
1508                         long[] res = new long [n];
1509                         for (int i = 0; i < n; ++i)
1510                                 res [i] = r.ReadId ();
1511                         return res;
1512                 }
1513
1514                 public long[] Type_GetFields (long id, out string[] names, out long[] types, out int[] attrs) {
1515                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_FIELDS, new PacketWriter ().WriteId (id));
1516
1517                         int n = r.ReadInt ();
1518                         long[] res = new long [n];
1519                         names = new string [n];
1520                         types = new long [n];
1521                         attrs = new int [n];
1522                         for (int i = 0; i < n; ++i) {
1523                                 res [i] = r.ReadId ();
1524                                 names [i] = r.ReadString ();
1525                                 types [i] = r.ReadId ();
1526                                 attrs [i] = r.ReadInt ();
1527                         }
1528                         return res;
1529                 }
1530
1531                 public PropInfo[] Type_GetProperties (long id) {
1532                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_PROPERTIES, new PacketWriter ().WriteId (id));
1533
1534                         int n = r.ReadInt ();
1535                         PropInfo[] res = new PropInfo [n];
1536                         for (int i = 0; i < n; ++i) {
1537                                 res [i] = new PropInfo ();
1538                                 res [i].id = r.ReadId ();
1539                                 res [i].name = r.ReadString ();
1540                                 res [i].get_method = r.ReadId ();
1541                                 res [i].set_method = r.ReadId ();
1542                                 res [i].attrs = r.ReadInt ();
1543                         }
1544
1545                         return res;
1546                 }
1547
1548                 public long Type_GetObject (long id) {
1549                         return SendReceive (CommandSet.TYPE, (int)CmdType.GET_OBJECT, new PacketWriter ().WriteId (id)).ReadId ();
1550                 }
1551
1552                 public ValueImpl[] Type_GetValues (long id, long[] fields) {
1553                         int len = fields.Length;
1554                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (len).WriteIds (fields));
1555
1556                         ValueImpl[] res = new ValueImpl [len];
1557                         for (int i = 0; i < len; ++i)
1558                                 res [i] = r.ReadValue ();
1559                         return res;
1560                 }
1561
1562                 public void Type_SetValues (long id, long[] fields, ValueImpl[] values) {
1563                         SendReceive (CommandSet.TYPE, (int)CmdType.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (fields.Length).WriteIds (fields).WriteValues (values));
1564                 }
1565
1566                 public string[] Type_GetSourceFiles (long id) {
1567                         var r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_SOURCE_FILES, new PacketWriter ().WriteId (id));
1568                         int len = r.ReadInt ();
1569                         string[] res = new string [len];
1570                         for (int i = 0; i < len; ++i)
1571                                 res [i] = r.ReadString ();
1572                         return res;
1573                 }
1574
1575                 public bool Type_IsAssignableFrom (long id, long c_id) {
1576                         return SendReceive (CommandSet.TYPE, (int)CmdType.IS_ASSIGNABLE_FROM, new PacketWriter ().WriteId (id).WriteId (c_id)).ReadByte () > 0;
1577                 }
1578
1579                 public CattrInfo[] Type_GetCustomAttributes (long id, long attr_type_id, bool inherit) {
1580                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_CATTRS, new PacketWriter ().WriteId (id).WriteId (attr_type_id));
1581                         return ReadCattrs (r);
1582                 }
1583
1584                 public CattrInfo[] Type_GetFieldCustomAttributes (long id, long field_id, long attr_type_id, bool inherit) {
1585                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_FIELD_CATTRS, new PacketWriter ().WriteId (id).WriteId (field_id).WriteId (attr_type_id));
1586                         return ReadCattrs (r);
1587                 }
1588
1589                 public CattrInfo[] Type_GetPropertyCustomAttributes (long id, long field_id, long attr_type_id, bool inherit) {
1590                         PacketReader r = SendReceive (CommandSet.TYPE, (int)CmdType.GET_PROPERTY_CATTRS, new PacketWriter ().WriteId (id).WriteId (field_id).WriteId (attr_type_id));
1591                         return ReadCattrs (r);
1592                 }
1593
1594                 /*
1595                  * EVENTS
1596                  */
1597
1598                 public int EnableEvent (EventType etype, SuspendPolicy suspend_policy, List<Modifier> mods) {
1599                         var w = new PacketWriter ().WriteByte ((byte)etype).WriteByte ((byte)suspend_policy);
1600                         if (mods != null) {
1601                                 if (mods.Count > 255)
1602                                         throw new NotImplementedException ();
1603                                 w.WriteByte ((byte)mods.Count);
1604                                 foreach (Modifier mod in mods) {
1605                                         if (mod is CountModifier) {
1606                                                 w.WriteByte ((byte)ModifierKind.COUNT);
1607                                                 w.WriteInt ((mod as CountModifier).Count);
1608                                         } else if (mod is LocationModifier) {
1609                                                 w.WriteByte ((byte)ModifierKind.LOCATION_ONLY);
1610                                                 w.WriteId ((mod as LocationModifier).Method);
1611                                                 w.WriteLong ((mod as LocationModifier).Location);
1612                                         } else if (mod is StepModifier) {
1613                                                 w.WriteByte ((byte)ModifierKind.STEP);
1614                                                 w.WriteId ((mod as StepModifier).Thread);
1615                                                 w.WriteInt ((mod as StepModifier).Size);
1616                                                 w.WriteInt ((mod as StepModifier).Depth);
1617                                         } else if (mod is ThreadModifier) {
1618                                                 w.WriteByte ((byte)ModifierKind.THREAD_ONLY);
1619                                                 w.WriteId ((mod as ThreadModifier).Thread);
1620                                         } else if (mod is ExceptionModifier) {
1621                                                 var em = mod as ExceptionModifier;
1622                                                 w.WriteByte ((byte)ModifierKind.EXCEPTION_ONLY);
1623                                                 w.WriteId (em.Type);
1624                                                 if (Version.MajorVersion > 2 || Version.MinorVersion > 0) {
1625                                                         /* This is only supported in protocol version 2.1 */
1626                                                         w.WriteBool (em.Caught);
1627                                                         w.WriteBool (em.Uncaught);
1628                                                 } else if (!em.Caught || !em.Uncaught) {
1629                                                         throw new NotSupportedException ("This request is not supported by the protocol version implemented by the debuggee.");
1630                                                 }
1631                                         } else if (mod is AssemblyModifier) {
1632                                                 w.WriteByte ((byte)ModifierKind.ASSEMBLY_ONLY);
1633                                                 var amod = (mod as AssemblyModifier);
1634                                                 w.WriteInt (amod.Assemblies.Length);
1635                                                 foreach (var id in amod.Assemblies)
1636                                                         w.WriteId (id);
1637                                         } else {
1638                                                 throw new NotImplementedException ();
1639                                         }
1640                                 }
1641                         } else {
1642                                 w.WriteByte (0);
1643                         }
1644                         return SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.SET, w).ReadInt ();
1645                 }
1646
1647                 public void ClearEventRequest (EventType etype, int req_id) {
1648                         SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.CLEAR, new PacketWriter ().WriteByte ((byte)etype).WriteInt (req_id));
1649                 }
1650
1651                 public void ClearAllBreakpoints () {
1652                         SendReceive (CommandSet.EVENT_REQUEST, (int)CmdEventRequest.CLEAR_ALL_BREAKPOINTS, new PacketWriter ());
1653                 }
1654
1655                 /*
1656                  * STACK FRAME
1657                  */
1658                 public ValueImpl StackFrame_GetThis (long thread_id, long id) {
1659                         PacketReader r = SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_THIS, new PacketWriter ().WriteId (thread_id).WriteId (id));
1660                         return r.ReadValue ();
1661                 }
1662
1663                 public ValueImpl[] StackFrame_GetValues (long thread_id, long id, int[] pos) {
1664                         /* pos < 0 -> argument at pos (-pos) - 1 */
1665                         /* pos >= 0 -> local at pos */
1666                         int len = pos.Length;
1667                         PacketReader r = SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.GET_VALUES, new PacketWriter ().WriteId (thread_id).WriteId (id).WriteInt (len).WriteInts (pos));
1668
1669                         ValueImpl[] res = new ValueImpl [len];
1670                         for (int i = 0; i < len; ++i)
1671                                 res [i] = r.ReadValue ();
1672                         return res;
1673                 }
1674
1675                 public void StackFrame_SetValues (long thread_id, long id, int[] pos, ValueImpl[] values) {
1676                         /* pos < 0 -> argument at pos (-pos) - 1 */
1677                         /* pos >= 0 -> local at pos */
1678                         int len = pos.Length;
1679                         SendReceive (CommandSet.STACK_FRAME, (int)CmdStackFrame.SET_VALUES, new PacketWriter ().WriteId (thread_id).WriteId (id).WriteInt (len).WriteInts (pos).WriteValues (values));
1680                 }
1681
1682                 /*
1683                  * ARRAYS
1684                  */
1685                 public int[] Array_GetLength (long id, out int rank, out int[] lower_bounds) {
1686                         var r = SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.GET_LENGTH, new PacketWriter ().WriteId (id));
1687                         rank = r.ReadInt ();
1688                         int[] res = new int [rank];
1689                         lower_bounds = new int [rank];
1690                         for (int i = 0; i < rank; ++i) {
1691                                 res [i] = r.ReadInt ();
1692                                 lower_bounds [i] = r.ReadInt ();
1693                         }
1694                         return res;
1695                 }
1696
1697                 public ValueImpl[] Array_GetValues (long id, int index, int len) {
1698                         var r = SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (index).WriteInt (len));
1699                         ValueImpl[] res = new ValueImpl [len];
1700                         for (int i = 0; i < len; ++i)
1701                                 res [i] = r.ReadValue ();
1702                         return res;
1703                 }
1704
1705                 public void Array_SetValues (long id, int index, ValueImpl[] values) {
1706                         SendReceive (CommandSet.ARRAY_REF, (int)CmdArrayRef.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (index).WriteInt (values.Length).WriteValues (values));
1707                 }
1708
1709                 /*
1710                  * STRINGS
1711                  */
1712                 public string String_GetValue (long id) {
1713                         return SendReceive (CommandSet.STRING_REF, (int)CmdStringRef.GET_VALUE, new PacketWriter ().WriteId (id)).ReadString ();
1714                 }
1715
1716                 /*
1717                  * OBJECTS
1718                  */
1719                 public long Object_GetType (long id) {
1720                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_TYPE, new PacketWriter ().WriteId (id)).ReadId ();
1721                 }
1722
1723                 public long Object_GetDomain (long id) {
1724                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_DOMAIN, new PacketWriter ().WriteId (id)).ReadId ();
1725                 }
1726
1727                 public ValueImpl[] Object_GetValues (long id, long[] fields) {
1728                         int len = fields.Length;
1729                         PacketReader r = SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_VALUES, new PacketWriter ().WriteId (id).WriteInt (len).WriteIds (fields));
1730
1731                         ValueImpl[] res = new ValueImpl [len];
1732                         for (int i = 0; i < len; ++i)
1733                                 res [i] = r.ReadValue ();
1734                         return res;
1735                 }
1736
1737                 public void Object_SetValues (long id, long[] fields, ValueImpl[] values) {
1738                         SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.SET_VALUES, new PacketWriter ().WriteId (id).WriteInt (fields.Length).WriteIds (fields).WriteValues (values));
1739                 }
1740
1741                 public bool Object_IsCollected (long id) {
1742                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.IS_COLLECTED, new PacketWriter ().WriteId (id)).ReadInt () == 1;
1743                 }
1744
1745                 public long Object_GetAddress (long id) {
1746                         return SendReceive (CommandSet.OBJECT_REF, (int)CmdObjectRef.GET_ADDRESS, new PacketWriter ().WriteId (id)).ReadLong ();
1747                 }
1748
1749         }
1750
1751         /* This is the interface exposed by the debugger towards the debugger agent */
1752         interface IEventHandler
1753         {
1754                 void VMStart (int req_id, long thread_id, string vm_uri);
1755
1756                 void VMDeath (int req_id, long thread_id, string vm_uri);
1757
1758                 void VMDisconnect (int req_id, long thread_id, string vm_uri);
1759
1760                 void ThreadStart (int req_id, long thread_id, long id);
1761
1762                 void ThreadDeath (int req_id, long thread_id, long id);
1763
1764                 void AssemblyLoad (int req_id, long thread_id, long id);
1765
1766                 void AssemblyUnload (int req_id, long thread_id, long id);
1767
1768                 void TypeLoad (int req_id, long thread_id, long id);
1769
1770                 void MethodEntry (int req_id, long thread_id, long id);
1771
1772                 void MethodExit (int req_id, long thread_id, long id);
1773
1774                 void Breakpoint (int req_id, long thread_id, long method_id, long loc);
1775
1776                 void Step (int req_id, long thread_id, long method_id, long loc);
1777
1778                 void Exception (int req_id, long thread_id, long exc_id, long loc);
1779
1780                 void AppDomainCreate (int req_id, long thread_id, long id);
1781
1782                 void AppDomainUnload (int req_id, long thread_id, long id);
1783         }
1784 }