#define _GNU_SOURCE #include #include #include #include #include int connect(int sock, const struct sockaddr *addr, socklen_t addrlen) { int (*next_connect)(int, const struct sockaddr *, socklen_t) = dlsym(RTLD_NEXT, "connect"); int res = next_connect(sock, addr, addrlen); if (!res && addr->sa_family == AF_INET) { int opt = 1; setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, &opt, sizeof(opt)); } return res; }