/******************************************************************************/
/* */
/* X r d N e t C o n n e c t . c c */
/* */
/* (c) 2004 by the Board of Trustees of the Leland Stanford, Jr., University */
/* All Rights Reserved */
/* Produced by Andrew Hanushevsky for Stanford University under contract */
/* DE-AC02-76-SFO0515 with the Department of Energy */
/* */
/* This file is part of the XRootD software suite. */
/* */
/* XRootD 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 3 of the License, or (at your */
/* option) any later version. */
/* */
/* XRootD 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 XRootD in a file called COPYING.LESSER (LGPL license) and file */
/* COPYING (GPL license). If not, see . */
/* */
/* The copyright holder's institutional names and contributor's names may not */
/* be used to endorse or promote products derived from this software without */
/* specific prior written permission of the institution or contributor. */
/******************************************************************************/
#include "errno.h"
#include "fcntl.h"
#ifndef WIN32
#include "poll.h"
#include "unistd.h"
#include
#include
#endif
#include "XrdNet/XrdNetConnect.hh"
#include "XrdSys/XrdSysPlatform.hh"
/******************************************************************************/
/* C o n n e c t */
/******************************************************************************/
int XrdNetConnect::Connect( int fd,
const struct sockaddr *name,
int namelen,
int tsec)
{
int old_flags, new_flags, myRC;
SOCKLEN_t myRClen = sizeof(myRC);
// If no timeout wanted, do a plain connect() which will timeout after 3
// minutes on most platforms.
//
if (!tsec)
{if (connect(fd, name, namelen)) return errno;
return 0;
}
// If a timeout is wanted, then we must convert this file descriptor to be
// non-blocking so that if a connection is not made immediately we can get
// control back and poll for completion for the specified amount of time.
// Regardless of outcome we will restore the original fd settings.
//
old_flags = fcntl(fd, F_GETFL, 0);
new_flags = old_flags | O_NDELAY | O_NONBLOCK;
fcntl(fd, F_SETFL, new_flags);
if (!connect(fd, name, namelen)) myRC = 0;
else if (EINPROGRESS != net_errno) myRC = net_errno;
else {struct pollfd polltab = {fd, POLLOUT|POLLWRNORM, 0};
do {myRC = poll(&polltab, 1, tsec*1000);}
while(myRC < 0 && errno == EINTR);
if (myRC != 1) myRC = ETIMEDOUT;
else getsockopt(fd,SOL_SOCKET,SO_ERROR,(Sokdata_t)&myRC,&myRClen);
}
fcntl(fd, F_SETFD, old_flags);
return myRC;
}