mirror of
https://github.com/jart/cosmopolitan.git
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59 lines
3 KiB
C
59 lines
3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2021 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/timeval.h"
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#include "libc/sock/goodsocket.internal.h"
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#include "libc/sock/sock.h"
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#include "libc/sysv/consts/so.h"
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#include "libc/sysv/consts/sol.h"
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#include "libc/sysv/consts/tcp.h"
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static bool Tune(int fd, int a, int b, int x) {
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if (!b) return false;
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return setsockopt(fd, a, b, &x, sizeof(x)) != -1;
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}
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/**
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* Returns new socket with modern goodness enabled.
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*/
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int GoodSocket(int family, int type, int protocol, bool isserver,
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const struct timeval *timeout) {
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int fd;
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if ((fd = socket(family, type, protocol)) != -1) {
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if (isserver) {
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Tune(fd, SOL_TCP, TCP_FASTOPEN, 100);
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Tune(fd, SOL_SOCKET, SO_REUSEADDR, 1);
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} else {
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Tune(fd, SOL_TCP, TCP_FASTOPEN_CONNECT, 1);
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}
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if (!Tune(fd, SOL_TCP, TCP_QUICKACK, 1)) {
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Tune(fd, SOL_TCP, TCP_NODELAY, 1);
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}
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if (timeout) {
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if (timeout->tv_sec < 0) {
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Tune(fd, SOL_SOCKET, SO_KEEPALIVE, 1);
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Tune(fd, SOL_TCP, TCP_KEEPIDLE, -timeout->tv_sec);
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Tune(fd, SOL_TCP, TCP_KEEPINTVL, -timeout->tv_sec);
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} else {
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setsockopt(fd, SOL_SOCKET, SO_RCVTIMEO, timeout, sizeof(*timeout));
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setsockopt(fd, SOL_SOCKET, SO_SNDTIMEO, timeout, sizeof(*timeout));
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}
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}
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}
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return fd;
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}
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