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/*
* The ManaPlus Client
* Copyright (C) 2013-2020 The ManaPlus Developers
* Copyright (C) 2020-2023 The ManaVerse Developers
*
* This file is part of The ManaPlus Client.
*
* 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
* 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/>.
*/
#include "logger.h"
#if defined __linux__ || defined __linux
#include <sys/socket.h>
#if defined(M_TCPOK) && !defined(ANDROID)
#include <netinet/in.h>
#include <netdb.h>
#include <linux/tcp.h>
#else // defined(M_TCPOK) && !defined(ANDROID)
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <netdb.h>
#include <netinet/tcp.h>
// Use linear timeouts for thin streams
#define TCP_THIN_LINEAR_TIMEOUTS 16
// Fast retrans. after 1 dupack
#define TCP_THIN_DUPACK 17
#endif // defined(M_TCPOK) && !defined(ANDROID)
#endif // defined __linux__ || defined __linux
PRAGMACLANG6GCC(GCC diagnostic push)
PRAGMACLANG6GCC(GCC diagnostic ignored "-Wold-style-cast")
#include "net/sdltcpnet.h"
PRAGMACLANG6GCC(GCC diagnostic pop)
#include "debug.h"
#if !defined(__native_client__) \
&& (defined(TCP_THIN_LINEAR_TIMEOUTS) \
|| defined(TCP_THIN_DUPACK))
// because actual struct is hidden in SDL_net we reinroducing it here
struct TCPsocketHack final
{
TCPsocketHack() :
ready(0),
channel(0),
remoteAddress(),
localAddress(),
sflag()
{ }
A_DELETE_COPY(TCPsocketHack)
int ready;
int channel;
IPaddress remoteAddress;
IPaddress localAddress;
int sflag;
};
#endif // !defined(__native_client__)
// && (defined(TCP_THIN_LINEAR_TIMEOUTS)
// || defined(TCP_THIN_DUPACK))
void TcpNet::init()
{
SDLNet_Init();
}
void TcpNet::quit()
{
SDLNet_Quit();
}
void TcpNet::closeSocket(const TcpNet::Socket socket)
{
SDLNet_TCP_Close(socket);
}
int TcpNet::send(const TcpNet::Socket sock, const void *const data,
const int len)
{
return SDLNet_TCP_Send(sock, data, len);
}
const char *TcpNet::getError()
{
return SDL_GetError();
}
int TcpNet::resolveHost(IPaddress *const address, const char *const host,
const Uint16 port)
{
return SDLNet_ResolveHost(address, host, port);
}
TcpNet::Socket TcpNet::open(IPaddress *const ip)
{
const TcpNet::Socket sock = SDLNet_TCP_Open(ip);
#if !defined(__native_client__) \
&& (defined(TCP_THIN_LINEAR_TIMEOUTS) \
|| defined(TCP_THIN_DUPACK))
if ((sock != nullptr) && (ip != nullptr))
{
const TCPsocketHack *const hack
= reinterpret_cast<const TCPsocketHack *>(sock);
// here we using some magic to compare TCPsocket and own padding
// because actual struct TCPsocket not in headers
if (hack != nullptr)
{
const IPaddress &addr = hack->remoteAddress;
if (addr.host == ip->host && addr.port == ip->port)
{
const int val = 1;
#ifdef TCP_THIN_LINEAR_TIMEOUTS
if (setsockopt(hack->channel, IPPROTO_TCP,
TCP_THIN_LINEAR_TIMEOUTS, &val, sizeof(val)) != 0)
{
logger->log_r("error on set TCP_THIN_LINEAR_TIMEOUTS");
}
#endif // TCP_THIN_LINEAR_TIMEOUTS
#ifdef TCP_THIN_DUPACK
if (setsockopt(hack->channel, IPPROTO_TCP,
TCP_THIN_DUPACK, &val, sizeof(val)) != 0)
{
logger->log_r("error on set TCP_THIN_DUPACK");
}
#endif // TCP_THIN_DUPACK
}
}
}
#endif // !defined(__native_client__)
// && (defined(TCP_THIN_LINEAR_TIMEOUTS)
// || defined(TCP_THIN_DUPACK))
return sock;
}
TcpNet::SocketSet TcpNet::allocSocketSet(const int maxsockets)
{
return SDLNet_AllocSocketSet(maxsockets);
}
int TcpNet::addSocket(const TcpNet::SocketSet set, const TcpNet::Socket sock)
{
PRAGMACLANG6GCC(GCC diagnostic push)
PRAGMACLANG6GCC(GCC diagnostic ignored "-Wold-style-cast")
return SDLNet_TCP_AddSocket(set, sock);
PRAGMACLANG6GCC(GCC diagnostic pop)
}
int TcpNet::socketReady(const TcpNet::Socket sock)
{
PRAGMACLANG5(GCC diagnostic push)
PRAGMACLANG5(GCC diagnostic ignored "-Wzero-as-null-pointer-constant")
PRAGMACLANG6GCC(GCC diagnostic push)
PRAGMACLANG6GCC(GCC diagnostic ignored "-Wold-style-cast")
return SDLNet_SocketReady(sock);
PRAGMACLANG6GCC(GCC diagnostic pop)
PRAGMACLANG5(GCC diagnostic pop)
}
int TcpNet::checkSockets(const TcpNet::SocketSet set, const Uint32 timeout)
{
return SDLNet_CheckSockets(set, timeout);
}
int TcpNet::recv(const TcpNet::Socket sock, void *const data, const int maxlen)
{
return SDLNet_TCP_Recv(sock, data, maxlen);
}
int TcpNet::delSocket(const TcpNet::SocketSet set, const TcpNet::Socket sock)
{
PRAGMACLANG6GCC(GCC diagnostic push)
PRAGMACLANG6GCC(GCC diagnostic ignored "-Wold-style-cast")
return SDLNet_TCP_DelSocket(set, sock);
PRAGMACLANG6GCC(GCC diagnostic pop)
}
void TcpNet::freeSocketSet(const TcpNet::SocketSet set)
{
SDLNet_FreeSocketSet(set);
}
TcpNet::Socket TcpNet::accept(const TcpNet::Socket sock)
{
return SDLNet_TCP_Accept(sock);
}
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