nexmon – Rev 1
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/*---------------------------------------------------------------
* Copyright (c) 1999,2000,2001,2002,2003
* The Board of Trustees of the University of Illinois
* All Rights Reserved.
*---------------------------------------------------------------
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software (Iperf) and associated
* documentation files (the "Software"), to deal in the Software
* without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute,
* sublicense, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do
* so, subject to the following conditions:
*
*
* Redistributions of source code must retain the above
* copyright notice, this list of conditions and
* the following disclaimers.
*
*
* Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimers in the documentation and/or other materials
* provided with the distribution.
*
*
* Neither the names of the University of Illinois, NCSA,
* nor the names of its contributors may be used to endorse
* or promote products derived from this Software without
* specific prior written permission.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
* ________________________________________________________________
* National Laboratory for Applied Network Research
* National Center for Supercomputing Applications
* University of Illinois at Urbana-Champaign
* http://www.ncsa.uiuc.edu
* ________________________________________________________________
*
* PerfSocket.cpp
* by Mark Gates <mgates@nlanr.net>
* Ajay Tirumala <tirumala@ncsa.uiuc.edu>
* -------------------------------------------------------------------
* Has routines the Client and Server classes use in common for
* performance testing the network.
* Changes in version 1.2.0
* for extracting data from files
* -------------------------------------------------------------------
* headers
* uses
* <stdlib.h>
* <stdio.h>
* <string.h>
*
* <sys/types.h>
* <sys/socket.h>
* <unistd.h>
*
* <arpa/inet.h>
* <netdb.h>
* <netinet/in.h>
* <sys/socket.h>
* ------------------------------------------------------------------- */
#define HEADERS()
#include "headers.h"
#include "PerfSocket.hpp"
#include "SocketAddr.h"
#include "util.h"
/* -------------------------------------------------------------------
* Set socket options before the listen() or connect() calls.
* These are optional performance tuning factors.
* ------------------------------------------------------------------- */
void SetSocketOptions( thread_Settings *inSettings ) {
// set the TCP window size (socket buffer sizes)
// also the UDP buffer size
// must occur before call to accept() for large window sizes
setsock_tcp_windowsize( inSettings->mSock, inSettings->mTCPWin,
(inSettings->mThreadMode == kMode_Client ? 1 : 0) );
if ( isCongestionControl( inSettings ) ) {
#ifdef TCP_CONGESTION
Socklen_t len = strlen( inSettings->mCongestion ) + 1;
int rc = setsockopt( inSettings->mSock, IPPROTO_TCP, TCP_CONGESTION,
inSettings->mCongestion, len);
if (rc == SOCKET_ERROR ) {
fprintf(stderr, "Attempt to set '%s' congestion control failed: %s\n",
inSettings->mCongestion, strerror(errno));
exit(1);
}
#else
fprintf( stderr, "The -Z option is not available on this operating system\n");
#endif
}
// check if we're sending multicast, and set TTL
if ( isMulticast( inSettings ) && ( inSettings->mTTL > 0 ) ) {
#ifdef HAVE_MULTICAST
int val = inSettings->mTTL;
if ( !SockAddr_isIPv6( &inSettings->local ) ) {
int rc = setsockopt( inSettings->mSock, IPPROTO_IP, IP_MULTICAST_TTL,
(char*) &val, (Socklen_t) sizeof(val));
WARN_errno( rc == SOCKET_ERROR, "multicast ttl" );
}
#ifdef HAVE_IPV6_MULTICAST
else {
int rc = setsockopt( inSettings->mSock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
(char*) &val, (Socklen_t) sizeof(val));
WARN_errno( rc == SOCKET_ERROR, "multicast ttl" );
}
#endif
#endif
}
#ifdef IP_TOS
// set IP TOS (type-of-service) field
if ( inSettings->mTOS > 0 ) {
int tos = inSettings->mTOS;
Socklen_t len = sizeof(tos);
int rc = setsockopt( inSettings->mSock, IPPROTO_IP, IP_TOS,
(char*) &tos, len );
WARN_errno( rc == SOCKET_ERROR, "setsockopt IP_TOS" );
}
#endif
if ( !isUDP( inSettings ) ) {
// set the TCP maximum segment size
setsock_tcp_mss( inSettings->mSock, inSettings->mMSS );
#ifdef TCP_NODELAY
// set TCP nodelay option
if ( isNoDelay( inSettings ) ) {
int nodelay = 1;
Socklen_t len = sizeof(nodelay);
int rc = setsockopt( inSettings->mSock, IPPROTO_TCP, TCP_NODELAY,
(char*) &nodelay, len );
WARN_errno( rc == SOCKET_ERROR, "setsockopt TCP_NODELAY" );
}
#endif
}
}
// end SetSocketOptions
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