CLOUD: Add Networking::Client

Keeps current client's state

backends/networking/sdl_net/client.cpp

@@ -0,0 +1,99 @@
+/* ScummVM - Graphic Adventure Engine
+*
+* ScummVM is the legal property of its developers, whose names
+* are too numerous to list here. Please refer to the COPYRIGHT
+* file distributed with this source distribution.
+*
+* This program is free software; you can redistribute it and/or
+* modify it under the terms of the GNU General Public License
+* as published by the Free Software Foundation; either version 2
+* of the License, or (at your option) any later version.
+*
+* This program is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with this program; if not, write to the Free Software
+* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+*
+*/
+
+#define FORBIDDEN_SYMBOL_ALLOW_ALL
+
+#include "backends/networking/sdl_net/client.h"
+#include "common/textconsole.h"
+#include <SDL/SDL_net.h>
+
+namespace Networking {
+
+Client::Client(): _state(INVALID), _set(nullptr), _socket(nullptr) {}
+
+Client::Client(SDLNet_SocketSet set, TCPsocket socket): _state(INVALID), _set(nullptr), _socket(nullptr) {
+	open(set, socket);
+}
+
+Client::~Client() {
+	close();
+}
+
+void Client::open(SDLNet_SocketSet set, TCPsocket socket) {	
+	if (_state != INVALID) close();
+	_state = READING_HEADERS;
+	_socket = socket;
+	_set = set;
+	if (set) {
+		int numused = SDLNet_TCP_AddSocket(set, socket);
+		if (numused == -1) {
+			error("SDLNet_AddSocket: %s\n", SDLNet_GetError());
+		}
+	}
+}
+
+void Client::readHeaders() {
+	if (!_socket) return;
+	if (!SDLNet_SocketReady(_socket)) return;
+
+	const uint32 BUFFER_SIZE = 16 * 1024;
+	char buffer[BUFFER_SIZE];	
+	int bytes = SDLNet_TCP_Recv(_socket, buffer, BUFFER_SIZE);	
+	if (bytes <= 0) {
+		warning("Client::readHeaders recv fail");		
+		_state = INVALID;
+		return;
+	}	
+	_headers += Common::String(buffer, bytes);	
+	checkIfHeadersEnded();
+}
+
+void Client::checkIfHeadersEnded() {
+	const char *cstr = _headers.c_str();
+	const char *position = strstr(cstr, "\r\n\r\n");
+	if (position) _state = READ_HEADERS;
+}
+
+void Client::close() {
+	if (_set) {
+		if (_socket) {
+			int numused = SDLNet_TCP_DelSocket(_set, _socket);
+			if (numused == -1)
+				error("SDLNet_DelSocket: %s\n", SDLNet_GetError());
+		}
+		_set = nullptr;
+	}
+
+	if (_socket) {
+		SDLNet_TCP_Close(_socket);
+		_socket = nullptr;
+	}
+
+	_state = INVALID;
+}
+
+
+ClientState Client::state() { return _state; }
+
+Common::String Client::headers() { return _headers; }
+
+} // End of namespace Networking