void setsocketopts(int fd)
{
int yes = 1; // reuse fix
#if !defined(WIN32)
// set SO_REAUSEADDR to true, unix only. on windows this option causes
// the previous owner of the socket to give up, which is not desirable
// in most cases, neither compatible with unix.
sSetsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof(yes));
#ifdef SO_REUSEPORT
sSetsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof(yes));
#endif
#endif
// Set the socket into no-delay mode; otherwise packets get delayed for up to 200ms, likely creating server-side lag.
// The RO protocol is mainly single-packet request/response, plus the FIFO model already does packet grouping anyway.
sSetsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&yes, sizeof(yes));
// force the socket into no-wait, graceful-close mode (should be the default, but better make sure)
//(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winsock/winsock/closesocket_2.asp)
{
struct linger opt;
opt.l_onoff = 0; // SO_DONTLINGER
opt.l_linger = 0; // Do not care
if( sSetsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&opt, sizeof(opt)) )
ShowWarning("setsocketopts: Unable to set SO_LINGER mode for connection #%d!\n", fd);
}
}
void setsocketopts(int fd, struct hSockOpt *opt) {
int yes = 1; // reuse fix
struct linger lopt;
#if !defined(WIN32)
// set SO_REAUSEADDR to true, unix only. on windows this option causes
// the previous owner of the socket to give up, which is not desirable
// in most cases, neither compatible with unix.
if (sSetsockopt(fd,SOL_SOCKET,SO_REUSEADDR,(char *)&yes,sizeof(yes)))
ShowWarning("setsocketopts: Unable to set SO_REUSEADDR mode for connection #%d!\n", fd);
#ifdef SO_REUSEPORT
if (sSetsockopt(fd,SOL_SOCKET,SO_REUSEPORT,(char *)&yes,sizeof(yes)))
ShowWarning("setsocketopts: Unable to set SO_REUSEPORT mode for connection #%d!\n", fd);
#endif // SO_REUSEPORT
#endif // WIN32
// Set the socket into no-delay mode; otherwise packets get delayed for up to 200ms, likely creating server-side lag.
// The RO protocol is mainly single-packet request/response, plus the FIFO model already does packet grouping anyway.
if (sSetsockopt(fd, IPPROTO_TCP, TCP_NODELAY, (char *)&yes, sizeof(yes)))
ShowWarning("setsocketopts: Unable to set TCP_NODELAY mode for connection #%d!\n", fd);
if( opt && opt->setTimeo ) {
struct timeval timeout;
timeout.tv_sec = 5;
timeout.tv_usec = 0;
if (sSetsockopt(fd,SOL_SOCKET,SO_RCVTIMEO,(char *)&timeout,sizeof(timeout)))
ShowWarning("setsocketopts: Unable to set SO_RCVTIMEO for connection #%d!\n", fd);
if (sSetsockopt(fd,SOL_SOCKET,SO_SNDTIMEO,(char *)&timeout,sizeof(timeout)))
ShowWarning("setsocketopts: Unable to set SO_SNDTIMEO for connection #%d!\n", fd);
}
// force the socket into no-wait, graceful-close mode (should be the default, but better make sure)
//(http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winsock/winsock/closesocket_2.asp)
lopt.l_onoff = 0; // SO_DONTLINGER
lopt.l_linger = 0; // Do not care
if( sSetsockopt(fd, SOL_SOCKET, SO_LINGER, (char*)&lopt, sizeof(lopt)) )
ShowWarning("setsocketopts: Unable to set SO_LINGER mode for connection #%d!\n", fd);
#ifdef TCP_THIN_LINEAR_TIMEOUTS
if (sSetsockopt(fd, IPPROTO_TCP, TCP_THIN_LINEAR_TIMEOUTS, (char *)&yes, sizeof(yes)))
ShowWarning("setsocketopts: Unable to set TCP_THIN_LINEAR_TIMEOUTS mode for connection #%d!\n", fd);
#endif
#ifdef TCP_THIN_DUPACK
if (sSetsockopt(fd, IPPROTO_TCP, TCP_THIN_DUPACK, (char *)&yes, sizeof(yes)))
ShowWarning("setsocketopts: Unable to set TCP_THIN_DUPACK mode for connection #%d!\n", fd);
#endif
}
