/* -------------------------------------------------------------------
* 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);
FAIL( rc == SOCKET_ERROR, ( "Attempt to set '%s' congestion control failed: %s\r\n", inSettings->mCongestion, strerror(errno) ), NULL );
#else
fprintf( stderr, "The -Z option is not available on this operating system\r\n");
#endif /* TCP_CONGESTION */
}
// 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,
(const char*) &val, (Socklen_t) sizeof(val));
WARN_errno( rc == SOCKET_ERROR, ( "Failed to set multicast TTL.\r\n" ) );
}
#ifdef HAVE_IPV6_MULTICAST
else {
int rc = setsockopt( inSettings->mSock, IPPROTO_IPV6, IPV6_MULTICAST_HOPS,
(const char*) &val, (Socklen_t) sizeof(val));
WARN_errno( rc == SOCKET_ERROR, ( "Failed to set multicast TTL.\r\n" ) );
}
#endif /* HAVE_IPV6_MULTICAST */
#endif /* HAVE_MULTICAST */
}
#ifdef IP_TOS
// set IP TOS (type-of-service) field
// if ( inSettings->mTOS > 0 ) {
int tos, rc;
tos = inSettings->mTOS;
Socklen_t len = sizeof(tos);
rc = setsockopt( inSettings->mSock, IPPROTO_IP, IP_TOS,(char*) &tos, len );
WARN_errno( rc == SOCKET_ERROR, ( "Failed to set IP_TOS.\r\n" ) );
// }
#endif /* IP_TOS */
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, ( "Failed to set TCP_NODELAY.\r\n" ) );
}
#endif /* TCP_NODELAY */
}
} // end SetSocketOptions
void PerfSocket::SetSocketOptions( void ) {
// set the TCP window size (socket buffer sizes)
// also the UDP buffer size
// must occur before call to accept() for large window sizes
set_tcp_windowsize( mSock, mSettings->mTCPWin );
#ifdef IP_TOS
// set IP TOS (type-of-service) field
if ( mSettings->mTOS > 0 ) {
int tos = mSettings->mTOS;
Socklen_t len = sizeof(tos);
int rc = setsockopt( mSock, IPPROTO_IP, IP_TOS,
(char*) &tos, len );
FAIL_errno( rc == SOCKET_ERROR, "setsockopt IP_TOS" );
}
#endif
if ( ! mUDP ) {
// set the TCP maximum segment size
if(mSettings->mProtocol != IPPROTO_SCTP) {
setsock_tcp_mss( mSock, mSettings->mMSS );
#ifdef TCP_NODELAY
// set TCP nodelay option
if ( mSettings->mNodelay ) {
int nodelay = 1;
Socklen_t len = sizeof(nodelay);
int rc = setsockopt( mSock, IPPROTO_TCP, TCP_NODELAY,
(char*) &nodelay, len );
FAIL_errno( rc == SOCKET_ERROR, "setsockopt TCP_NODELAY" );
}
#endif
} else {
mSettings->mMSS = getsock_sctp_mss( mSock );
#ifdef SCTP_NODELAY
// set TCP nodelay option
if ( mSettings->mNodelay ) {
int nodelay = 1;
Socklen_t len = sizeof(nodelay);
int rc = setsockopt( mSock, IPPROTO_SCTP, SCTP_NODELAY,
(char*) &nodelay, len );
FAIL_errno( rc == SOCKET_ERROR, "setsockopt SCTP_NODELAY" );
}
#endif
#if defined(SCTP_PARTIAL_DELIVERY_POINT) && defined(SCTP_EXPLICIT_EOR)
if(mSettings->mEmulation == true) {
int rc;
int val=1;
Socklen_t len = sizeof(int);
rc = setsockopt( mSock, IPPROTO_SCTP, SCTP_PARTIAL_DELIVERY_POINT,
(char*) &val, len );
FAIL_errno( rc == SOCKET_ERROR, "setsockopt SCTP_PARTIAL_DELIVERY_POINT" );
rc = setsockopt( mSock, IPPROTO_SCTP, SCTP_EXPLICIT_EOR,
(char*) &val, len );
FAIL_errno( rc == SOCKET_ERROR, "setsockopt SCTP_EXPLICT_EOR" );
}
#endif
}
}
}