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int SocketServer::ListenOnPort()
{
WSADATA wsaData;
SOCKET ListenSocket = INVALID_SOCKET, ClientSocket = INVALID_SOCKET;
struct addrinfo *result = NULL,
hints;
SOCKADDR_IN clientAddr; // Internet address
IN_ADDR clientIn; // IP address
int nClientAddrLen;
int iResult;
iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
if (iResult != 0)
{ printf("WSAStartup falló. Error no: %d\n", iResult);
return 1;
}
ZeroMemory(&hints, sizeof(hints));
hints.ai_family = AF_INET;
hints.ai_socktype = SOCK_STREAM;
hints.ai_protocol = IPPROTO_TCP;
hints.ai_flags = AI_PASSIVE;
iResult = getaddrinfo(NULL, DEFAULT_PORT, &hints, &result);
if ( iResult != 0 )
{ printf("getaddrinfo falló. Error no: %d\n", iResult);
WSACleanup();
return 1;
}
ListenSocket = socket(result->ai_family, result->ai_socktype, result->ai_protocol);
if (ListenSocket == INVALID_SOCKET)
{ printf("Falló la creación del socket: %ld\n", WSAGetLastError());
freeaddrinfo(result);
WSACleanup();
return 1;
}
// Setup the TCP listening socket
iResult = bind( ListenSocket, result->ai_addr, (int)result->ai_addrlen);
if (iResult == SOCKET_ERROR)
{ printf("Error en la Asociación. Error no: %d\n", WSAGetLastError());
freeaddrinfo(result);
closesocket(ListenSocket);
WSACleanup();
return 1;
}
freeaddrinfo(result);
iResult = listen(ListenSocket, SOMAXCONN);
if (iResult == SOCKET_ERROR) {
printf("Listening error: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
return 1;
}
nClientAddrLen = sizeof(clientAddr);
// Accept a client socket
ClientSocket = accept(ListenSocket, NULL, NULL);
if (ClientSocket == INVALID_SOCKET) {
printf("Error al aceptar la conexión: %d\n", WSAGetLastError());
closesocket(ListenSocket);
WSACleanup();
return 1;
}
else
{ if (getpeername(ClientSocket, (LPSOCKADDR)&clientAddr, &nClientAddrLen) == SOCKET_ERROR)
{ printf("getpeername() generated error %d", WSAGetLastError());
}
else
{ // copy the four byte IP address into an IP address structure
memcpy(&clientIn, &clientAddr.sin_addr.s_addr, 4);
printf("client IP address is %s, port is %d", inet_ntoa(clientIn), ntohs(clientAddr.sin_port));
}
} // No longer need server socket
closesocket(ListenSocket);
}
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