/// <summary>
/// Activates server.
/// </summary>
public static TryResult <TcpWorker> TryInitialize(TcpServerSettings settings)
{
// 0 try initiates use of the Winsock DLL by a process
{
WSADATA data;
var startupResultCode = WinsockInterop.WSAStartup(WinsockInterop.Version, out data);
// check if startup was successful
if (startupResultCode != WinsockErrorCode.None)
{
return(TryResult <TcpWorker> .CreateFail(startupResultCode));
}
}
// 1 try create server socket
SOCKET serverSocket;
{
serverSocket = WinsockInterop.WSASocket(WinsockInterop.AF_INET, (Int32)SocketType.Stream, (Int32)ProtocolType.Tcp, IntPtr.Zero, 0, WinsockInterop.WSA_FLAG_REGISTERED_IO);
// check if socket created
if (WinsockInterop.INVALID_SOCKET == serverSocket)
{
goto FAIL;
}
}
// 2 try initialize Registered I/O extension
RIOHandle rioHandle;
if (!RIOHandle.TryCreate(serverSocket, out rioHandle))
{
goto FAIL;
}
// 3 get count of processors
var processorsCount = Environment.ProcessorCount;
// 4 create collection of the IOCP workers
var workers = new IocpWorker[processorsCount];
// initialize workers
for (var processorIndex = 0; processorIndex < processorsCount; processorIndex++)
{
// try create worker
var tryCreateWorker = IocpWorker.TryCreate(rioHandle, processorIndex, 4096, 1024);
// check if operation has succeed
if (!tryCreateWorker.Success)
{
goto FAIL;
}
// add to collection
workers[processorIndex] = tryCreateWorker.Result;
}
// try configure server socket and start listen
if (!TryConfigureBindAndStartListen(serverSocket, settings))
{
goto FAIL;
}
// success
var server = new TcpWorker(serverSocket, rioHandle, workers);
foreach (var worker in workers)
{
worker.thread.Start();
}
return(TryResult <TcpWorker> .CreateSuccess(server));
FAIL:
// get last error
var errorCode = (WinsockErrorCode)WinsockInterop.WSAGetLastError();
// terminate use of the Winsock DLL
WinsockInterop.WSACleanup();
// return fail
return(TryResult <TcpWorker> .CreateFail(errorCode));
}
