1 /*---------------------------------------------------------------
2 * Copyright (c) 1999,2000,2001,2002,2003
3 * The Board of Trustees of the University of Illinois
5 *---------------------------------------------------------------
6 * Permission is hereby granted, free of charge, to any person
7 * obtaining a copy of this software (Iperf) and associated
8 * documentation files (the "Software"), to deal in the Software
9 * without restriction, including without limitation the
10 * rights to use, copy, modify, merge, publish, distribute,
11 * sublicense, and/or sell copies of the Software, and to permit
12 * persons to whom the Software is furnished to do
13 * so, subject to the following conditions:
16 * Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and
18 * the following disclaimers.
21 * Redistributions in binary form must reproduce the above
22 * copyright notice, this list of conditions and the following
23 * disclaimers in the documentation and/or other materials
24 * provided with the distribution.
27 * Neither the names of the University of Illinois, NCSA,
28 * nor the names of its contributors may be used to endorse
29 * or promote products derived from this Software without
30 * specific prior written permission.
32 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
33 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
34 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
35 * NONINFRINGEMENT. IN NO EVENT SHALL THE CONTIBUTORS OR COPYRIGHT
36 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
37 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
38 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE
39 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
40 * ________________________________________________________________
41 * National Laboratory for Applied Network Research
42 * National Center for Supercomputing Applications
43 * University of Illinois at Urbana-Champaign
44 * http://www.ncsa.uiuc.edu
45 * ________________________________________________________________
48 * by Mark Gates <mgates@nlanr.net>
49 * Ajay Tirumala <tirumala@ncsa.uiuc.edu>
50 * -------------------------------------------------------------------
51 * Has routines the Client and Server classes use in common for
52 * performance testing the network.
53 * Changes in version 1.2.0
54 * for extracting data from files
55 * -------------------------------------------------------------------
70 * ------------------------------------------------------------------- */
77 #include "PerfSocket.hpp"
78 #include "SocketAddr.h"
81 /* -------------------------------------------------------------------
82 * Set socket options before the listen() or connect() calls.
83 * These are optional performance tuning factors.
84 * ------------------------------------------------------------------- */
86 void SetSocketOptions( thread_Settings *inSettings ) {
87 // set the TCP window size (socket buffer sizes)
88 // also the UDP buffer size
89 // must occur before call to accept() for large window sizes
90 setsock_tcp_windowsize( inSettings->mSock, inSettings->mTCPWin,
91 (inSettings->mThreadMode == kMode_Client ? 1 : 0) );
93 // check if we're sending multicast, and set TTL
94 if ( isMulticast( inSettings ) && ( inSettings->mTTL > 0 ) ) {
95 int val = inSettings->mTTL;
97 if ( !SockAddr_isIPv6( &inSettings->local ) ) {
98 int rc = setsockopt( inSettings->mSock, IPPROTO_IP, IP_MULTICAST_TTL,
99 (const void*) &val, (Socklen_t) sizeof(val));
101 WARN_errno( rc == SOCKET_ERROR, "multicast ttl" );
103 #ifdef HAVE_IPV6_MULTICAST
105 int rc = setsockopt( inSettings->mSock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
106 (const void*) &val, (Socklen_t) sizeof(val));
107 WARN_errno( rc == SOCKET_ERROR, "multicast ttl" );
116 // set IP TOS (type-of-service) field
117 if ( inSettings->mTOS > 0 ) {
118 int tos = inSettings->mTOS;
119 Socklen_t len = sizeof(tos);
120 int rc = setsockopt( inSettings->mSock, IPPROTO_IP, IP_TOS,
122 WARN_errno( rc == SOCKET_ERROR, "setsockopt IP_TOS" );
126 if ( !isUDP( inSettings ) ) {
127 // set the TCP maximum segment size
128 setsock_tcp_mss( inSettings->mSock, inSettings->mMSS );
132 // set TCP nodelay option
133 if ( isNoDelay( inSettings ) ) {
135 Socklen_t len = sizeof(nodelay);
136 int rc = setsockopt( inSettings->mSock, IPPROTO_TCP, TCP_NODELAY,
137 (char*) &nodelay, len );
138 WARN_errno( rc == SOCKET_ERROR, "setsockopt TCP_NODELAY" );
143 // end SetSocketOptions