public static IServer Create(SocketServerConfig config)
{
try
{
int port = config.Port;
string ip = config.IPAddress;
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SocketKeepAliveHelper.SetKeepAliveValues(config, listener, config);
if (ip == null || ip.Length < 1 || ip == "127.0.0.1")
{
listener.Bind(new IPEndPoint(IPAddress.Any, port));
}
else
{
listener.Bind(new IPEndPoint(IPAddress.Parse(ip), port));
}
return(new SocketServer(listener, config));
}
catch (Exception err)
{
SocketLogMgt.SetLastError(err);
return(null);
}
}
internal SocketWorkerWithLongConnection(int id, Socket socket, SocketServer server)
{
_server = server;
_socket = socket;
UpdateActiveDT();
_strSocketID = id.ToString();
_remoteEndPointInfo = _socket.RemoteEndPoint.ToString();
_buffer = new byte[_server.Config.ReceiveRequestBufferSizeKB * 1024];
SocketKeepAliveHelper.SetKeepAliveValues(this, _socket, _server.Config);
}
public static IServer Create(int port)
{
try
{
SocketServerConfig cfg = new SocketServerConfig();
cfg.Port = port;
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SocketKeepAliveHelper.SetKeepAliveValues(cfg, listener, cfg);
listener.Bind(new IPEndPoint(IPAddress.Any, port));
return(new SocketServer(listener, cfg));
}
catch (Exception err)
{
SocketLogMgt.SetLastError(err);
return(null);
}
}
public static IServer Create(string ip, int port)
{
if (ip == null || ip.Length < 1 || ip == "127.0.0.1")
{
return(Create(port));
}
try
{
SocketServerConfig cfg = new SocketServerConfig();
cfg.IPAddress = ip;
cfg.Port = port;
Socket listener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
SocketKeepAliveHelper.SetKeepAliveValues(cfg, listener, cfg);
listener.Bind(new IPEndPoint(IPAddress.Parse(ip), port));
return(new SocketServer(listener, cfg));
}
catch (Exception err)
{
SocketLogMgt.SetLastError(err);
return(null);
}
}
/// <summary>
/// 20130206
/// To avoid the following exception when HL7GW is behind a NAT/Proxy/Firewall:
/// System.Net.Sockets.SocketException: An established connection was aborted by the software in your host machine.
/// https://groups.google.com/forum/?fromgroups#!topic/google-help-dataapi/5abZAyGUu3A
/// http://code.google.com/p/google-gdata/wiki/KeepAliveAndUnderlyingConnectionIsClosed
/// http://tldp.org/HOWTO/TCP-Keepalive-HOWTO/overview.html#preventingdisconnection
/// http://www.codeproject.com/Articles/117557/Set-Keep-Alive-Values
/// </summary>
/// <param name="obj"></param>
/// <param name="socket"></param>
/// <param name="cfg"></param>
public static void SetKeepAliveValues(object obj, Socket socket, SocketServerConfig cfg)
{
if (socket == null || cfg == null)
{
return;
}
int res;
uint time = cfg.KeepAliveTime;
uint interval = cfg.KeepAliveInterval;
if (cfg.KeepAlive)
{
res = SocketKeepAliveHelper.SetKeepAliveValues(socket, true, time, interval);
SocketLogMgt.SetLog(SocketLogType.Debug, obj,
string.Format("SetSocketKeepAlive: Set {0}ms alive every {1}ms, result:{2}", time, interval, res));
}
else
{
res = SocketKeepAliveHelper.SetKeepAliveValues(socket, false, time, interval);
SocketLogMgt.SetLog(SocketLogType.Debug, obj,
string.Format("SetSocketKeepAlive: Disable, result:{0}", res));
}
}