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/* M-runtime for c++
* Copyright (C) 2005-2008 Vladimir Menshakov
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tcp_socket.h"
#include <sys/types.h>
#include <string.h>
#ifdef _WINDOWS
# include "Winsock2.h"
#else
# include <sys/socket.h>
# include <netinet/in.h>
# include <netinet/tcp.h>
# include <netinet/ip.h> /* superset of previous */
# include <arpa/inet.h>
# include <netdb.h>
#endif
#ifdef _WINDOWS
# ifndef socklen_t
# define socklen_t int
# endif
# ifndef in_addr_t
# define in_addr_t unsigned long
# endif
#endif
#include "net_exception.h"
using namespace mrt;
TCPSocket::TCPSocket() {
create(PF_INET, SOCK_STREAM, 0);
}
void TCPSocket::listen(const std::string &bindaddr, const unsigned port, const bool reuse) {
int on = 1;
if (reuse)
setsockopt(_sock, SOL_SOCKET, SO_REUSEADDR, (char*)&on, sizeof(on));
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
if (!bindaddr.empty()) {
addr.sin_addr.s_addr = inet_addr(bindaddr.c_str());
}
if (bind(_sock, (const sockaddr *)&addr, sizeof(addr)) == -1)
throw_net(("bind"));
if (::listen(_sock, 10) == -1)
throw_net(("listen"));
}
void TCPSocket::connect(const addr &addr, const bool no_delay) {
if (no_delay)
noDelay();
struct sockaddr_in sin_addr;
memset(&sin_addr, 0, sizeof(sin_addr));
sin_addr.sin_family = AF_INET;
sin_addr.sin_port = htons(addr.port);
sin_addr.sin_addr.s_addr = addr.ip;
LOG_DEBUG(("connect %s:%d", inet_ntoa(sin_addr.sin_addr), addr.port));
if (::connect(_sock, (const struct sockaddr*)&sin_addr, sizeof(sin_addr)) == -1)
throw_net(("connect"));
_addr = addr;
}
void TCPSocket::connect(const std::string &host, const int port, const bool no_delay) {
if (no_delay)
noDelay();
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
addr.sin_port = htons(port);
addr.sin_addr.s_addr = inet_addr(host.c_str());
//add gethostbyname here.
if (addr.sin_addr.s_addr == (in_addr_t)-1) {
//try to resolve host
hostent *he = gethostbyname(host.c_str());
if (he == NULL)
throw_ex(("host '%s' was not found", host.c_str()));
addr.sin_addr = *(struct in_addr*)(he->h_addr_list[0]);
}
LOG_DEBUG(("connect %s:%d", inet_ntoa(addr.sin_addr), port));
if (::connect(_sock, (const struct sockaddr*)&addr, sizeof(addr)) == -1)
throw_net(("connect"));
_addr.ip = addr.sin_addr.s_addr;
_addr.port = port;
}
const int TCPSocket::send(const void *data, const int len) const {
#ifdef _WINDOWS
return ::send(_sock, (const char *)data, len, 0);
#else
return ::send(_sock, data, len, 0);
#endif
}
//void send(const mrt::Chunk &data) const;
const int TCPSocket::recv(void *data, const int len) const {
#ifdef _WINDOWS
return ::recv(_sock, (char *)data, len, 0);
#else
return ::recv(_sock, data, len, 0);
#endif
}
void TCPSocket::accept(TCPSocket &client) {
struct sockaddr_in addr;
memset(&addr, 0, sizeof(addr));
addr.sin_family = AF_INET;
socklen_t len = sizeof(addr);
int s = ::accept(_sock, (struct sockaddr *)&addr, &len);
if (s == -1)
throw_net(("accept"));
client.close();
client._sock = s;
client._addr.ip = addr.sin_addr.s_addr;
client._addr.port = ntohs(addr.sin_port); //real port
}
#ifdef _WINDOWS
#ifndef IP_TOS
# define IP_TOS 3
#endif
#ifndef IPTOS_LOWDELAY
# define IPTOS_LOWDELAY 0x10
# define IPTOS_THROUGHPUT 0x08
# define IPTOS_RELIABILITY 0x04
#endif
#endif
void TCPSocket::noDelay(const bool flag) {
TRY {
if (_sock == -1)
throw_ex(("noDelay on unitialized socket"));
int value = flag?1:0;
int r = setsockopt(_sock, IPPROTO_TCP, TCP_NODELAY, (char *)&value, sizeof(value));
if (r < 0)
throw_net(("setsockopt(TCP_NODELAY)"));
#ifndef _WINDOWS
if (flag) {
value = IPTOS_LOWDELAY;
r = setsockopt(_sock, IPPROTO_IP, IP_TOS, (char *)&value, sizeof(value));
if (r < 0)
throw_net(("setsockopt(TOS_LOWDELAY)"));
}
#endif
} CATCH("noDelay", {});
}
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