Exemplo n.º 1
0
void EPosixClientSocket::eDisconnect()
{
	if ( m_fd >= 0 )
		// close socket
		SocketClose( m_fd);
	m_fd = -1;
	// uninitialize Winsock DLL (only for Windows)
	SocketsDestroy();
	eDisconnectBase();
}
Exemplo n.º 2
0
EClientSocket::~EClientSocket()
{
	if( m_fd != -2)
		SocketsDestroy();
}
Exemplo n.º 3
0
/**
 * Same as eConnect() except you may the specify address family here (default is
 * AF_UNSPEC).
 * We couldn't just add the new family arg to eConnect because the original one
 * is pure virtual declared in EClientSocketBase. Thanks C++ design crap ...
 */
bool EPosixClientSocket::eConnect2( const char *host, unsigned int port,
	int clientId, int family )
{
	// already connected?
	if( m_fd >= 0) {
		assert(false); // for now we don't allow that
		return true;
	}

	// initialize Winsock DLL (only for Windows)
	if ( !SocketsInit())	{
		// Does this set errno?
		getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(),
			"Initializing Winsock DLL failed.");
		return false;
	}

	// use local machine if no host passed in
	if ( !( host && *host)) {
		host = "127.0.0.1";
	}

	// starting to connect to server
	struct addrinfo *aitop;

	int s = resolveHost( host, port, family, &aitop );
	if( s != 0 ) {
		SocketsDestroy();
		const char *err;
#ifdef HAVE_GETADDRINFO
		err = gai_strerror(s);
#else
		err = "Invalid address, hostname resolving not supported.";
#endif
		getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
		return false;
	}

	int con_errno = 0;
	for( struct addrinfo *ai = aitop; ai != NULL; ai = ai->ai_next ) {

		// create socket
		m_fd = socket(ai->ai_family, ai->ai_socktype, 0);
		if( m_fd < 0) {
			con_errno = errno;
			continue;
		}

		/* Set socket O_NONBLOCK. If wanted we could handle errors
		   (portability!) We could even make O_NONBLOCK optional. */
		int sn = set_socket_nonblock( m_fd );
		assert( sn == 0 );

		// try to connect
		if( timeout_connect( m_fd, ai->ai_addr, ai->ai_addrlen ) < 0 ) {
			con_errno = errno;
			SocketClose(m_fd);
			m_fd = -1;
			continue;
		}
		/* successfully  connected */
		break;
	}

	freeaddrinfo(aitop);

	/* connection failed, tell the error which happened in our last try  */
	if( m_fd < 0 ) {
		const char *err = strerror(con_errno);
		SocketsDestroy();
		getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
		return false;
	}

	// set client id
	setClientId( clientId);

	errno = 0;
	onConnectBase();
	if( !isOutBufferEmpty() ) {
		/* For now we consider it as error if it's not possible to send an
		   integer string within a single tcp packet. Here we don't know weather
		   ::send() really failed or not. If so then we hopefully still have
		   it's errno set.*/
		const char *err = (errno != 0) ? strerror(errno)
			: "Sending client id failed.";
		eDisconnect();
		getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
		return false;
	}

	if( wait_socket( m_fd, WAIT_READ ) <= 0 ) {
		const char *err = (errno != 0) ? strerror(errno) : strerror(ENODATA);
		eDisconnect();
		getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
		return false;
	}

	while( !isConnected() ) {
		assert( isSocketOK() ); // need to be handled if send() would destroy it
		if ( !checkMessagesConnect()) {
			const char *err = (errno != 0) ? strerror(errno)
				: "The remote host closed the connection.";
			eDisconnect();
			getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), err );
			return false;
		}
	}
	// successfully connected
	return true;
}
Exemplo n.º 4
0
bool EPosixClientSocket::eConnect( const char *host, unsigned int port, int clientId)
{
	// reset errno
	errno = 0;

	// already connected?
	if( m_fd >= 0) {
		errno = EISCONN;
		getWrapper()->error( NO_VALID_ID, ALREADY_CONNECTED.code(), ALREADY_CONNECTED.msg());
		return false;
	}

	// initialize Winsock DLL (only for Windows)
	if ( !SocketsInit())	{
		return false;
	}

	// create socket
	m_fd = socket(AF_INET, SOCK_STREAM, 0);

	// cannot create socket
	if( m_fd < 0) {
		// uninitialize Winsock DLL (only for Windows)
		SocketsDestroy();
		getWrapper()->error( NO_VALID_ID, FAIL_CREATE_SOCK.code(), FAIL_CREATE_SOCK.msg());
		return false;
	}

	// use local machine if no host passed in
	if ( !( host && *host)) {
		host = "127.0.0.1";
	}

	// starting to connect to server
	struct sockaddr_in sa;
	memset( &sa, 0, sizeof(sa));
	sa.sin_family = AF_INET;
	sa.sin_port = htons( port);
	sa.sin_addr.s_addr = inet_addr( host);

	// try to connect
	if( (connect( m_fd, (struct sockaddr *) &sa, sizeof( sa))) < 0) {
		// error connecting
		// uninitialize Winsock DLL (only for Windows)
		SocketsDestroy();
		getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), CONNECT_FAIL.msg());
		return false;
	}

	// set client id
	setClientId( clientId);

	onConnectBase();

	while( isSocketOK() && !isConnected()) {
		if ( !checkMessages()) {
			// uninitialize Winsock DLL (only for Windows)
			SocketsDestroy();
			getWrapper()->error( NO_VALID_ID, CONNECT_FAIL.code(), CONNECT_FAIL.msg());
			return false;
		}
	}

	// successfully connected
	return true;
}