private static Boolean TryConfigureBindAndStartListen(SOCKET serverSocket, TcpServerSettings settings)
{
// try disable use of the Nagle algorithm if requested
if (settings.UseNagleAlgorithm == false)
{
var optionValue = -1;
unsafe
{
var tryDisableNagle = WinsockInterop.setsockopt(serverSocket, WinsockInterop.IPPROTO_TCP, WinsockInterop.TCP_NODELAY, (Byte*) &optionValue, sizeof(Int32));
// check if attempt has succeed
if (tryDisableNagle == WinsockInterop.SOCKET_ERROR)
{
return false;
}
}
}
// try enable faster operations on the loopback if requested
if (settings.UseFastLoopback)
{
unsafe
{
UInt32 optionValue = 1;
UInt32 dwBytes;
var tryEnableFastLoopbackResult = WinsockInterop.WSAIoctl(serverSocket, WinsockInterop.SIO_LOOPBACK_FAST_PATH, &optionValue, sizeof(UInt32), null, 0, out dwBytes, IntPtr.Zero, IntPtr.Zero);
// check if attempt has succeed
if (tryEnableFastLoopbackResult == WinsockInterop.SOCKET_ERROR)
{
return false;
}
}
}
// try bind
{
// compose address
var address = new IN_ADDR
{
s_addr = 0
};
// compose socket address
var socketAddress = new SOCKADDR_IN
{
sin_family = WinsockInterop.AF_INET,
sin_port = WinsockInterop.htons(settings.Port),
sin_addr = address
};
// try associate address with socket
var tryBindResult = WinsockInterop.bind(serverSocket, ref socketAddress, SOCKADDR_IN.Size);
if (tryBindResult == WinsockInterop.SOCKET_ERROR)
{
return false;
}
}
// try start listen
{
var tryStartListen = WinsockInterop.listen(serverSocket, settings.AcceptBacklogLength);
if (tryStartListen == WinsockInterop.SOCKET_ERROR)
{
return false;
}
}
return true;
}
public static extern Int32 bind([In] SOCKET s, [In] ref SOCKADDR_IN name, [In] Int32 namelen);