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

   1
   2
   3 namespace System.Net.NetworkInformation {
   4
   5     using System.Net;
   6     using System.Net.Sockets;
   7     using System.Security.Permissions;
   8     using System;
   9     using System.Runtime.InteropServices;
  10     using System.Collections;
  11     using System.ComponentModel;
  12     using System.Threading;
  13
  14
  15
  16
  17     /// <summary>
  18     /// Represents an active Tcp connection.</summary>
  19     internal class SystemTcpConnectionInformation:TcpConnectionInformation {
  20         IPEndPoint localEndPoint;
  21         IPEndPoint remoteEndPoint;
  22         TcpState state;
  23
  24         internal SystemTcpConnectionInformation(MibTcpRow row) {
  25             state = row.state;
  26
  27             //port is returned in Big-Endian - most significant bit on left
  28             //unfortunately, its done at the word level and not the dword level.
  29
  30             int localPort = row.localPort1<<8|row.localPort2;
  31             int remotePort = ((state == TcpState.Listen)?0:row.remotePort1<<8|row.remotePort2);
  32
  33             localEndPoint = new IPEndPoint(row.localAddr,(int)localPort);
  34             remoteEndPoint= new IPEndPoint(row.remoteAddr,(int)remotePort);
  35         }
  36
  37         // IPV6 version of the Tcp row
  38         internal SystemTcpConnectionInformation(MibTcp6RowOwnerPid row) {
  39             state = row.state;
  40
  41             //port is returned in Big-Endian - most significant bit on left
  42             //unfortunately, its done at the word level and not the dword level.
  43
  44             int localPort = row.localPort1 << 8 | row.localPort2;
  45             int remotePort = ((state == TcpState.Listen) ? 0 : row.remotePort1 << 8 | row.remotePort2);
  46
  47             localEndPoint = new IPEndPoint(new IPAddress(row.localAddr, row.localScopeId), (int)localPort);
  48             remoteEndPoint = new IPEndPoint(new IPAddress(row.remoteAddr, row.remoteScopeId), (int)remotePort);
  49         }
  50
  51
  52         public override TcpState State{get {return state;}}
  53         public override IPEndPoint LocalEndPoint{get {return localEndPoint;}}
  54         public override IPEndPoint RemoteEndPoint{get {return remoteEndPoint;}}
  55     }
  56  }
  57