setsockopt       1527 compat/mingw.c 	return setsockopt(s, lvl, optname, (const char*)optval, optlen);
setsockopt        324 connect.c      	if (setsockopt(sockfd, SOL_SOCKET, SO_KEEPALIVE, &ka, sizeof(ka)) < 0)
setsockopt        877 daemon.c       	return setsockopt(sockfd, SOL_SOCKET, SO_REUSEADDR,
setsockopt        948 daemon.c       			setsockopt(sockfd, IPPROTO_IPV6, IPV6_V6ONLY,
setsockopt        337 http.c         	rc = setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, (void *)&ka, len);