mcs/class/referencesource/System/net/System/Net/NetworkInformation/PingReply.cs

   1 using System.Net.Sockets;
   2 using System.Runtime.InteropServices;
   3
   4 namespace System.Net.NetworkInformation
   5 {
   6
   7     public class PingReply
   8     {
   9         IPAddress address;
  10         PingOptions options;
  11         IPStatus ipStatus;  // the status code returned by icmpsendecho, or the icmp status field on the raw socket
  12         long rtt;  // the round trip time.
  13         byte[] buffer; //buffer of the data
  14
  15
  16         internal PingReply(){
  17         }
  18
  19         internal PingReply (IPStatus ipStatus) {
  20             this.ipStatus = ipStatus;
  21             buffer = new byte[0];
  22         }
  23
  24         // The downlevel constructor.
  25         internal PingReply (byte[] data, int dataLength, IPAddress address, int time) {
  26             this.address = address;
  27             rtt = time;
  28
  29
  30             ipStatus = GetIPStatus ((IcmpV4Type)data[20],(IcmpV4Code) data[21]);
  31
  32             if (ipStatus == IPStatus.Success) {
  33                 buffer = new byte[dataLength - 28];
  34                 Array.Copy (data, 28, buffer, 0, dataLength - 28);
  35             }
  36             else
  37                 buffer = new byte[0];
  38         }
  39
  40 #if MONO
  41         internal PingReply (IPAddress address, byte [] buffer, PingOptions options, long roundtripTime, IPStatus status)
  42         {
  43             this.address = address;
  44             this.buffer = buffer;
  45             this.options = options;
  46             this.rtt = roundtripTime;
  47             this.ipStatus = status;
  48         }
  49 #else
  50         // the main constructor for the icmpsendecho apis
  51         internal PingReply (IcmpEchoReply reply) {
  52             address = new IPAddress (reply.address);
  53             ipStatus = (IPStatus)reply.status; //the icmpsendecho ip status codes
  54
  55             //only copy the data if we succeed w/ the ping operation
  56             if (ipStatus == IPStatus.Success) {
  57                 rtt = (long)reply.roundTripTime;
  58                 buffer = new byte[reply.dataSize];
  59                 Marshal.Copy (reply.data, buffer, 0, reply.dataSize);
  60                 options = new PingOptions (reply.options);
  61             }
  62             else
  63                 buffer = new byte[0];
  64
  65         }
  66
  67                 // the main constructor for the icmpsendecho apis
  68         internal PingReply (Icmp6EchoReply reply, IntPtr dataPtr, int sendSize) {
  69
  70             address = new IPAddress(reply.Address.Address,reply.Address.ScopeID);
  71             ipStatus = (IPStatus)reply.Status; //the icmpsendecho ip status codes
  72
  73             //only copy the data if we succeed w/ the ping operation
  74             if (ipStatus == IPStatus.Success) {
  75                 rtt = (long)reply.RoundTripTime;
  76                 buffer = new byte[sendSize];
  77                 Marshal.Copy (IntPtrHelper.Add(dataPtr, 36), buffer, 0, sendSize);
  78                 //options = new PingOptions (reply.options);
  79             }
  80             else
  81                 buffer = new byte[0];
  82
  83         }
  84 #endif
  85
  86
  87         //translates the relevant icmpsendecho codes to a ipstatus code
  88         private IPStatus GetIPStatus (IcmpV4Type type, IcmpV4Code code) {
  89             switch (type) {
  90                 case IcmpV4Type.ICMP4_ECHO_REPLY:
  91                     return IPStatus.Success;
  92                 case IcmpV4Type.ICMP4_SOURCE_QUENCH:
  93                     return IPStatus.SourceQuench;
  94                 case IcmpV4Type.ICMP4_PARAM_PROB:
  95                     return IPStatus.ParameterProblem;
  96                 case IcmpV4Type.ICMP4_TIME_EXCEEDED:
  97                    return IPStatus.TtlExpired;
  98
  99                 case IcmpV4Type.ICMP4_DST_UNREACH:
 100                 {
 101                     switch (code) {
 102                         case  IcmpV4Code.ICMP4_UNREACH_NET:
 103                             return IPStatus.DestinationNetworkUnreachable;
 104                         case  IcmpV4Code.ICMP4_UNREACH_HOST:
 105                             return IPStatus.DestinationHostUnreachable;
 106                         case  IcmpV4Code.ICMP4_UNREACH_PROTOCOL:
 107                             return IPStatus.DestinationProtocolUnreachable;
 108                         case  IcmpV4Code.ICMP4_UNREACH_PORT:
 109                             return IPStatus.DestinationPortUnreachable;
 110                         case  IcmpV4Code.ICMP4_UNREACH_FRAG_NEEDED:
 111                             return IPStatus.PacketTooBig;
 112                         default:
 113                             return IPStatus.DestinationUnreachable;
 114                     }
 115                 }
 116             }
 117             return IPStatus.Unknown;
 118         }
 119
 120         //the basic properties
 121         public IPStatus Status { get { return ipStatus; } }
 122         public IPAddress Address { get { return address; } }
 123         public long RoundtripTime { get { return rtt; } }
 124         public PingOptions Options {
 125             get {
 126                 return options;
 127             }
 128         }
 129         public byte[] Buffer { get { return buffer; } }
 130     }
 131 }