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/*
Copyright (C) 2000 Stefan Westerfeld
stefan@space.twc.de
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include <config.h>
#include "tcpserver.h"
#include "socketconnection.h"
#include "dispatcher.h"
#define queue cqueue
#include <arpa/inet.h>
#undef queue
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <netinet/tcp.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include "mcoputils.h"
#include "debug.h"
using namespace std;
using namespace Arts;
bool TCPServer::running()
{
return socketOk;
}
TCPServer::TCPServer(Dispatcher *dispatcher)
{
this->dispatcher = dispatcher;
socketOk = initSocket();
if(socketOk) {
IOManager *iom = dispatcher->ioManager();
iom->watchFD(theSocket,IOType::read|IOType::except,this);
}
}
TCPServer::~TCPServer()
{
if(socketOk)
{
IOManager *iom = dispatcher->ioManager();
iom->remove(this,IOType::read|IOType::except);
close(theSocket);
}
}
static int TCPServerPort = 0;
void TCPServer::setPort(int port)
{
TCPServerPort = port;
}
bool TCPServer::initSocket()
{
struct sockaddr_in socket_addr;
theSocket = socket(PF_INET,SOCK_STREAM,0);
if(theSocket < 0)
{
arts_warning("MCOP TCPServer: can't create a socket");
return false;
}
if(fcntl(theSocket,F_SETFL,O_NONBLOCK)<0)
{
arts_warning("MCOP TCPServer: can't initialize non blocking I/O");
close(theSocket);
return false;
}
if (TCPServerPort)
{
int optval = 1;
if(setsockopt (theSocket, SOL_SOCKET, SO_REUSEADDR,
(const char *)&optval, sizeof (optval)) < 0)
{
arts_warning("MCOP TCPServer: can't set address reuse");
close(theSocket);
return false;
}
}
#ifdef TCP_NODELAY
// enable TCP sending without nagle algorithm - this sends out requests
// faster, because they are not queued in the hope that more data will
// need to be sent soon
int on = 1;
if(setsockopt(theSocket, IPPROTO_TCP, TCP_NODELAY,
(char *)&on, sizeof(on)) < 0)
{
arts_debug("couldn't set TCP_NODELAY on socket %d\n", theSocket);
}
#endif
socket_addr.sin_family = AF_INET;
socket_addr.sin_port = htons( TCPServerPort ); // 0 = choose port freely
socket_addr.sin_addr.s_addr = htonl( inet_addr("0.0.0.0") );
if ( ::bind( theSocket, (struct sockaddr *) &socket_addr,
sizeof(struct sockaddr_in) ) < 0 )
{
arts_warning("MCOP TCPServer: can't bind to port/address");
close(theSocket);
return false;
}
socklen_t sz = sizeof(struct sockaddr_in);
int r = getsockname (theSocket,(struct sockaddr *)&socket_addr, &sz);
if(r == 0) {
thePort = ntohs(socket_addr.sin_port);
}
else
{
arts_warning("MCOP TCPServer: getsockname failed");
close(theSocket);
return false;
}
if(listen(theSocket,16) < 0)
{
arts_warning("MCOP TCPServer: can't listen on the socket");
close(theSocket);
return false;
}
arts_debug("TCPServer: listening on '%s'", url().c_str());
return true;
}
string TCPServer::url()
{
char xport[200];
sprintf(xport,"%d",thePort);
return "tcp:"+MCOPUtils::getFullHostname()+":"+xport;
}
void TCPServer::notifyIO(int fd, int types)
{
assert(fd == theSocket);
assert(socketOk);
arts_debug("TCPManager: got notifyIO");
if(types & IOType::read)
{
int clientfd;
struct sockaddr_in incoming;
socklen_t size_in = sizeof(struct sockaddr_in);
clientfd = accept(theSocket, (struct sockaddr*) &incoming, &size_in );
if(clientfd > 0)
{
// non blocking I/O
int flags = fcntl (fd, F_GETFL, 0);
assert (flags != -1);
int nbl_result = fcntl (fd, F_SETFL, flags | O_NONBLOCK);
assert(nbl_result >= 0);
Dispatcher::the()->initiateConnection(
new SocketConnection(clientfd));
}
}
arts_assert((types & IOType::write) == 0);
arts_assert((types & IOType::except) == 0);
}
// vim: sw=4 ts=4
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