private void BeginConnect(IPAddress ipAddress, int serverPort)
{
IPEndPoint remoteEP = new IPEndPoint(ipAddress, serverPort);
remoteUDPEndPoint = remoteEP;
if (server.tcp_over_udp && connectionUDP == null)
{
remoteTDP = new TDPHandler();
}
if (socks5RemotePort != 0
|| connectionUDP == null && !server.tcp_over_udp
|| connectionUDP != null && server.udp_over_tcp)
{
remote = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
remote.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
}
if (connectionUDP != null && !server.udp_over_tcp)
{
try
{
remoteUDP = new Socket(ipAddress.AddressFamily,
SocketType.Dgram, ProtocolType.Udp);
remoteUDP.Bind(new IPEndPoint(ipAddress.AddressFamily == AddressFamily.InterNetworkV6 ? IPAddress.IPv6Any : IPAddress.Any, 0));
}
catch (SocketException)
{
remoteUDP = null;
}
}
if (remoteTDP != null && server.tcp_over_udp && socks5RemotePort == 0)
{
speedTester.BeginConnect();
remoteTDP.BeginConnect(server.method, server.password, remoteEP, "", 0,
new AsyncCallback(ConnectCallback), null);
}
else
{
// Connect to the remote endpoint.
if (socks5RemotePort == 0 && connectionUDP != null && !server.udp_over_tcp)
{
ConnectState _state = this.State;
if (_state == ConnectState.CONNECTING)
{
this.State = ConnectState.CONNECTED;
StartPipe();
}
else if (_state == ConnectState.CONNECTED)
{
//ERROR
}
}
else
{
speedTester.BeginConnect();
remote.BeginConnect(remoteEP,
new AsyncCallback(ConnectCallback), null);
}
}
}
public void ReConnect()
{
ResetTimeout(0);
reconnectTimesRemain--;
reconnectTimes++;
lock (server)
{
server.ServerSpeedLog().AddDisconnectTimes();
server.GetConnections().DecRef(this.connection);
}
if (reconnectTimes < 2)
{
server = this.getCurrentServer(true);
}
else
{
server = this.getCurrentServer(true, true);
}
CloseSocket(ref remote);
CloseSocket(ref remoteUDP);
if (remoteTDP != null)
{
try
{
remoteTDP.Shutdown();
//remoteTDP.Close();
}
catch (Exception e)
{
Logging.LogUsefulException(e);
}
remoteTDP = null;
}
if (obfs != null)
{
obfs.Dispose();
obfs = null;
}
connectionShutdown = false;
remoteShutdown = false;
speedTester.sizeUpload = 0;
speedTester.sizeDownload = 0;
lastErrCode = 0;
obfs = ObfsFactory.GetObfs(server.obfs);
try
{
Connect();
}
catch (Exception e)
{
LogSocketException(e);
if (!Logging.LogSocketException(server.remarks, server.server, e))
Logging.LogUsefulException(e);
this.Close();
}
}
private void BeginConnect(IPAddress ipAddress, int serverPort)
{
IPEndPoint remoteEP = new IPEndPoint(ipAddress, serverPort);
remoteTCPEndPoint = remoteEP;
remoteUDPEndPoint = remoteEP;
if (server.tcp_over_udp && connectionUDP == null)
{
remoteTDP = new TDPHandler();
}
if (socks5RemotePort != 0
|| connectionUDP == null && !server.tcp_over_udp
|| connectionUDP != null && server.udp_over_tcp)
{
remote = new Socket(ipAddress.AddressFamily,
SocketType.Stream, ProtocolType.Tcp);
remote.SetSocketOption(SocketOptionLevel.Tcp, SocketOptionName.NoDelay, true);
}
if (connectionUDP != null && !server.udp_over_tcp)
{
try
{
remoteUDP = new Socket(ipAddress.AddressFamily,
SocketType.Dgram, ProtocolType.Udp);
remoteUDP.Bind(new IPEndPoint(ipAddress.AddressFamily == AddressFamily.InterNetworkV6 ? IPAddress.IPv6Any : IPAddress.Any, 0));
}
catch (SocketException)
{
remoteUDP = null;
}
}
if (remoteTDP != null && server.tcp_over_udp && socks5RemotePort == 0)
{
speedTester.BeginConnect();
remoteTDP.BeginConnect(server.method, server.password, remoteEP, "", 0,
new AsyncCallback(ConnectCallback), null);
}
else
{
// Connect to the remote endpoint.
if (socks5RemotePort == 0 && connectionUDP != null && !server.udp_over_tcp)
{
ConnectState _state = this.State;
if (_state == ConnectState.CONNECTING)
{
StartPipe();
}
else if (_state == ConnectState.CONNECTED)
{
//ERROR
}
}
else
{
speedTester.BeginConnect();
IAsyncResult result = remote.BeginConnect(remoteEP,
new AsyncCallback(ConnectCallback), null);
if (reconnectTimesRemain + reconnectTimes > 0)
{
bool success = result.AsyncWaitHandle.WaitOne((int)(5 * 1000), true);
if (!success)
{
remote.Close();
lastErrCode = 8;
server.ServerSpeedLog().AddTimeoutTimes();
}
}
}
}
}
public void Close()
{
lock (this)
{
if (closed)
{
return;
}
closed = true;
}
try
{
if (TryReconnect())
return;
lock (server)
{
if (this.State != ConnectState.END)
{
this.State = ConnectState.END;
server.ServerSpeedLog().AddDisconnectTimes();
server.GetConnections().DecRef(this.connection);
server.ServerSpeedLog().AddSpeedLog(new TransLog((int)speedTester.GetAvgDownloadSpeed(), DateTime.Now));
}
getCurrentServer = null;
ResetTimeout(0);
speedTester = null;
}
CloseSocket(ref connection);
CloseSocket(ref connectionUDP);
CloseSocket(ref remote);
CloseSocket(ref remoteUDP);
if (remoteTDP != null)
{
try
{
remoteTDP.Shutdown();
//remoteTDP.Close();
}
catch (Exception e)
{
Logging.LogUsefulException(e);
}
remoteTDP = null;
}
if (obfs != null)
{
obfs.Dispose();
obfs = null;
}
lock (encryptionLock)
{
lock (decryptionLock)
{
if (encryptor != null)
((IDisposable)encryptor).Dispose();
if (encryptorUDP != null)
((IDisposable)encryptorUDP).Dispose();
}
}
}
catch (Exception e)
{
Logging.LogUsefulException(e);
}
}
private void Connect()
{
remote = null;
remoteUDP = null;
remoteTDP = null;
closed = false;
lock (server)
{
server.ServerSpeedLog().AddConnectTimes();
if (this.State == ConnectState.HANDSHAKE)
{
this.State = ConnectState.CONNECTING;
}
server.GetConnections().AddRef(this.connection);
encryptor = EncryptorFactory.GetEncryptor(server.method, server.password);
encryptorUDP = EncryptorFactory.GetEncryptor(server.method, server.password);
}
this.protocol = ObfsFactory.GetObfs(server.protocol);
this.obfs = ObfsFactory.GetObfs(server.obfs);
{
IPAddress ipAddress;
string serverURI = server.server;
int serverPort = server.server_port;
if (socks5RemotePort > 0)
{
serverURI = socks5RemoteHost;
serverPort = socks5RemotePort;
}
bool parsed = IPAddress.TryParse(serverURI, out ipAddress);
if (!parsed)
{
//IPHostEntry ipHostInfo = Dns.GetHostEntry(serverURI);
//ipAddress = ipHostInfo.AddressList[0];
if (server.DnsBuffer().isExpired(serverURI))
{
Dns.BeginGetHostEntry(serverURI, new AsyncCallback(DnsCallback), null);
return;
}
else
{
ipAddress = server.DnsBuffer().ip;
}
}
BeginConnect(ipAddress, serverPort);
}
}
