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
  41         // the main constructor for the icmpsendecho apis
  42         internal PingReply (IcmpEchoReply reply) {
  43             address = new IPAddress (reply.address);
  44             ipStatus = (IPStatus)reply.status; //the icmpsendecho ip status codes
  45
  46             //only copy the data if we succeed w/ the ping operation
  47             if (ipStatus == IPStatus.Success) {
  48                 rtt = (long)reply.roundTripTime;
  49                 buffer = new byte[reply.dataSize];
  50                 Marshal.Copy (reply.data, buffer, 0, reply.dataSize);
  51                 options = new PingOptions (reply.options);
  52             }
  53             else
  54                 buffer = new byte[0];
  55
  56         }
  57
  58                 // the main constructor for the icmpsendecho apis
  59         internal PingReply (Icmp6EchoReply reply, IntPtr dataPtr, int sendSize) {
  60
  61             address = new IPAddress(reply.Address.Address,reply.Address.ScopeID);
  62             ipStatus = (IPStatus)reply.Status; //the icmpsendecho ip status codes
  63
  64             //only copy the data if we succeed w/ the ping operation
  65             if (ipStatus == IPStatus.Success) {
  66                 rtt = (long)reply.RoundTripTime;
  67                 buffer = new byte[sendSize];
  68                 Marshal.Copy (IntPtrHelper.Add(dataPtr, 36), buffer, 0, sendSize);
  69                 //options = new PingOptions (reply.options);
  70             }
  71             else
  72                 buffer = new byte[0];
  73
  74         }
  75
  76
  77
  78         //translates the relevant icmpsendecho codes to a ipstatus code
  79         private IPStatus GetIPStatus (IcmpV4Type type, IcmpV4Code code) {
  80             switch (type) {
  81                 case IcmpV4Type.ICMP4_ECHO_REPLY:
  82                     return IPStatus.Success;
  83                 case IcmpV4Type.ICMP4_SOURCE_QUENCH:
  84                     return IPStatus.SourceQuench;
  85                 case IcmpV4Type.ICMP4_PARAM_PROB:
  86                     return IPStatus.ParameterProblem;
  87                 case IcmpV4Type.ICMP4_TIME_EXCEEDED:
  88                    return IPStatus.TtlExpired;
  89
  90                 case IcmpV4Type.ICMP4_DST_UNREACH:
  91                 {
  92                     switch (code) {
  93                         case  IcmpV4Code.ICMP4_UNREACH_NET:
  94                             return IPStatus.DestinationNetworkUnreachable;
  95                         case  IcmpV4Code.ICMP4_UNREACH_HOST:
  96                             return IPStatus.DestinationHostUnreachable;
  97                         case  IcmpV4Code.ICMP4_UNREACH_PROTOCOL:
  98                             return IPStatus.DestinationProtocolUnreachable;
  99                         case  IcmpV4Code.ICMP4_UNREACH_PORT:
 100                             return IPStatus.DestinationPortUnreachable;
 101                         case  IcmpV4Code.ICMP4_UNREACH_FRAG_NEEDED:
 102                             return IPStatus.PacketTooBig;
 103                         default:
 104                             return IPStatus.DestinationUnreachable;
 105                     }
 106                 }
 107             }
 108             return IPStatus.Unknown;
 109         }
 110
 111         //the basic properties
 112         public IPStatus Status { get { return ipStatus; } }
 113         public IPAddress Address { get { return address; } }
 114         public long RoundtripTime { get { return rtt; } }
 115         public PingOptions Options {
 116             get {
 117                 return options;
 118             }
 119         }
 120         public byte[] Buffer { get { return buffer; } }
 121     }
 122 }