public static IPAddress GetBestLocalIPAddress(String host, TNET_Socket.tnet_socket_type_t type)
{
try
{
#if WINDOWS_PHONE
String localHostNameOrAddress = (host == TNET_Socket.TNET_SOCKET_HOST_ANY) ? "localhost" : host; // Not use yet
IPAddress[] ipAddresses = new IPAddress[] { TNET_Socket.IsIPv6Type(type) ? IPAddress.IPv6Any : IPAddress.Any }; // FIXME: didn't found how to get local IP on WP7
#else
String localHostNameOrAddress = (host == TNET_Socket.TNET_SOCKET_HOST_ANY) ? Dns.GetHostName() : host;
IPAddress[] ipAddresses = Dns.GetHostAddresses(localHostNameOrAddress);
#endif
IPAddress ipAddress = null;
Boolean useIPv6 = TNET_Socket.IsIPv6Type(type);
if (ipAddresses != null && ipAddresses.Length > 0)
{
ipAddress = ipAddresses[0];
foreach (IPAddress ia in ipAddresses)
{
if ((ia.AddressFamily == AddressFamily.InterNetwork && (IPAddress.Loopback.ToString().Equals(ia.ToString()))) ||
(ia.AddressFamily == AddressFamily.InterNetworkV6 && (IPAddress.IPv6Loopback.ToString().Equals(ia.ToString()))))
{
continue;
}
if ((ia.AddressFamily == AddressFamily.InterNetwork && !useIPv6) || (ia.AddressFamily == AddressFamily.InterNetworkV6 && !ia.IsIPv6LinkLocal && useIPv6))
{
ipAddress = ia;
break;
}
}
}
if (ipAddress == null)
{
TSK_Debug.Error("{0} is an invalid hostname or address", localHostNameOrAddress);
ipAddress = TNET_Socket.IsIPv6Type(type) ? IPAddress.IPv6Any : IPAddress.Any;
}
return(ipAddress);
}
catch (Exception e)
{
TSK_Debug.Error("GetBestLocalIPAddress(host={0}) failed: ", host, e);
}
return(TNET_Socket.IsIPv6Type(type) ? IPAddress.IPv6Any : IPAddress.Any);
}
public TNET_Socket(String host, ushort port, tnet_socket_type_t type, Boolean nonblocking, Boolean bindsocket)
{
mId = ++sUniqueId;
mType = type;
mHost = host;
mPort = port;
mSocketEvent = new ManualResetEvent(false);
mSendSocketEventArgs = new SocketAsyncEventArgs();
mSendSocketEventArgs.Completed += delegate(object sender, SocketAsyncEventArgs e)
{
if (e.SocketError != SocketError.Success)
{
mSocketEvent.Set();
return;
}
// On WP7 Socket.ReceiveFromAsync() will only works after at least ONE SendTo()
if (e.LastOperation == SocketAsyncOperation.SendTo)
{
if (mRecvSocketEventArgs == null && RecvSocketCompleted != null)
{
mRecvSocketEventArgs = new SocketAsyncEventArgs();
// setting the remote endpoint will not filter on the remote host:port
// => will continue to work even if the remote port is different than 5060
// IPEndPoint is not serializable => create new one
mRecvSocketEventArgs.RemoteEndPoint = new IPEndPoint(IPAddress.Any, 5060); // e.RemoteEndPoint
mRecvSocketEventArgs.Completed += this.RecvSocketCompleted;
mRecvSocketEventArgs.SetBuffer(buffers, 0, buffers.Length);
mRecvSocketEventArgs.UserToken = e.UserToken;
(mRecvSocketEventArgs.UserToken as TNET_Socket).Socket.ReceiveFromAsync(mRecvSocketEventArgs);
}
}
mSocketEvent.Set();
};
AddressFamily addressFamily = TNET_Socket.IsIPv6Type(type) ? AddressFamily.InterNetworkV6 : AddressFamily.InterNetwork;
SocketType socketType = TNET_Socket.IsStreamType(type) ? SocketType.Stream : SocketType.Dgram;
#if WINDOWS_PHONE
ProtocolType protocolType = TNET_Socket.IsStreamType(type) ? ProtocolType.Tcp : ProtocolType.Udp;
#else
ProtocolType protocolType = TNET_Socket.IsIPv6Type(type) ? ProtocolType.IP : ProtocolType.IP; // Leave it like this
#endif
mSocket = new Socket(addressFamily, socketType, protocolType);
#if !WINDOWS_PHONE
mSocket.Blocking = !nonblocking;
mSocket.UseOnlyOverlappedIO = true;
#endif
mSendSocketEventArgs.UserToken = this;
if (bindsocket)
{
IPAddress ipAddress = TNET_Utils.GetBestLocalIPAddress(host, type);
TSK_Debug.Info("Local address={0}", ipAddress);
mHost = ipAddress.ToString();
if (bindsocket)
{
ushort localPort = (port == TNET_SOCKET_PORT_ANY) ? (ushort)0 : port;
IPEndPoint localIEP = new IPEndPoint(ipAddress, localPort);
#if !WINDOWS_PHONE
mSocket.Bind(localIEP);
#endif
if (TNET_Socket.IsDatagramType(type))
{
#if !WINDOWS_PHONE
mPort = (ushort)(mSocket.LocalEndPoint as IPEndPoint).Port;
#endif
}
}
}
}