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/* 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 3 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, see <http://www.gnu.org/licenses/>.
*
*/
#define FORBIDDEN_SYMBOL_ALLOW_ALL
#include "backends/networking/enet/source/enet.h"
#include "backends/networking/enet/enet.h"
#include "backends/networking/enet/host.h"
#include "backends/networking/enet/socket.h"
#include "common/debug.h"
namespace Networking {
ENet::ENet() {
_initialized = false;
}
ENet::~ENet() {
if (_initialized) {
// Deinitialize the library.
debug(1, "ENet: Deinitializing.");
enet_deinitialize();
}
}
bool ENet::initialize() {
if (ENet::_initialized) {
return true;
}
if (enet_initialize() != 0) {
warning("ENet: ENet library failed to initialize");
return false;
}
debug(1, "ENet: Initialized.");
_initialized = true;
return true;
}
Host *ENet::createHost(const Common::String &address, int port, int numClients, int numChannels, int incBand, int outBand) {
ENetAddress enetAddress;
// NOTE: 0.0.0.0 returns ENET_HOST_ANY normally.
enet_address_set_host(&enetAddress, address.c_str());
enetAddress.port = port;
ENetHost *_host = enet_host_create(&enetAddress, numClients, numChannels, incBand, outBand);
if (_host == nullptr) {
warning("ENet: An error occurred when trying to create host with address %s:%d", address.c_str(), port);
return nullptr;
}
return new Host(_host);
}
Host *ENet::connectToHost(const Common::String &hostAddress, int hostPort, const Common::String &address, int port, int timeout, int numChannels, int incBand, int outBand) {
ENetAddress enetHostAddress;
// NOTE: 0.0.0.0 returns ENET_HOST_ANY normally.
enet_address_set_host(&enetHostAddress, hostAddress.c_str());
enetHostAddress.port = hostPort;
// NOTE: Number of channels must match with the server's.
ENetHost *enetHost = enet_host_create(&enetHostAddress, 1, numChannels, incBand, outBand);
if (enetHost == nullptr) {
warning("ENet: An error occurred when trying to create client host");
return nullptr;
}
ENetAddress enetAddress;
if (address == "255.255.255.255") {
enetAddress.host = ENET_HOST_BROADCAST;
} else {
// NOTE: 0.0.0.0 returns ENET_HOST_ANY normally.
enet_address_set_host(&enetAddress, address.c_str());
}
enetAddress.port = port;
// Connect to server address
ENetPeer *enetPeer = enet_host_connect(enetHost, &enetAddress, numChannels, 0);
ENetEvent event;
if (enet_host_service(enetHost, &event, timeout) > 0 && event.type == ENET_EVENT_TYPE_CONNECT) {
debug(1, "ENet: Connection to %s:%d succeeded.", address.c_str(), port);
return new Host(enetHost, enetPeer);
}
warning("ENet: Connection to %s:%d failed", address.c_str(), port);
enet_peer_reset(enetPeer);
enet_host_destroy(enetHost);
return nullptr;
}
Host *ENet::connectToHost(const Common::String &address, int port, int timeout, int numChannels, int incBand, int outBand) {
return connectToHost("0.0.0.0", 0, address, port, timeout, numChannels, incBand, outBand);
}
Socket *ENet::createSocket(const Common::String &address, int port) {
ENetAddress enetAddress;
if (address == "255.255.255.255") {
enetAddress.host = ENET_HOST_BROADCAST;
} else {
// NOTE: 0.0.0.0 returns ENET_HOST_ANY normally.
enet_address_set_host(&enetAddress, address.c_str());
}
enetAddress.port = port;
ENetSocket enetSocket = enet_socket_create(ENET_SOCKET_TYPE_DATAGRAM);
if (enetSocket == ENET_SOCKET_NULL) {
warning("ENet: Unable to create socket");
return nullptr;
}
if (enet_socket_bind(enetSocket, &enetAddress) < 0) {
warning("ENet: Unable to bind socket to address %s:%d", address.c_str(), port);
enet_socket_destroy(enetSocket);
return nullptr;
}
enet_socket_set_option (enetSocket, ENET_SOCKOPT_NONBLOCK, 1);
enet_socket_set_option (enetSocket, ENET_SOCKOPT_BROADCAST, 1);
enet_socket_set_option (enetSocket, ENET_SOCKOPT_RCVBUF, ENET_HOST_RECEIVE_BUFFER_SIZE);
enet_socket_set_option (enetSocket, ENET_SOCKOPT_SNDBUF, ENET_HOST_SEND_BUFFER_SIZE);
return new Socket(enetSocket);
}
} // End of namespace Networking
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