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Add multicast test that works on Linux
This test unfortunately doesn't work yet on non-Linux platforms, which wasn't what I expected since the ip_mreq ABI is the same across all of our supported platforms. There's also an automation issue due to using INADDR_ANY since it causes popups on Windows.
This commit is contained in:
Justine Tunney
parent
4b8874ceb9
commit
d0ad50f5ae
106
test/libc/sock/multicast_test.c
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106
test/libc/sock/multicast_test.c
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@ -0,0 +1,106 @@
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/*-*- 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 2023 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/atomic.h"
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#include "libc/calls/calls.h"
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#include "libc/runtime/runtime.h"
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#include "libc/sock/sock.h"
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#include "libc/sock/struct/ip_mreq.h"
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#include "libc/sock/struct/sockaddr.h"
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#include "libc/sysv/consts/af.h"
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#include "libc/sysv/consts/inaddr.h"
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#include "libc/sysv/consts/ip.h"
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#include "libc/sysv/consts/ipproto.h"
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#include "libc/sysv/consts/so.h"
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#include "libc/sysv/consts/sock.h"
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#include "libc/sysv/consts/sol.h"
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#include "libc/testlib/subprocess.h"
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#include "libc/testlib/testlib.h"
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struct Shared {
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atomic_int ready;
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atomic_int isworking;
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} * g_shared;
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void Receiver(void) {
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int y = 1;
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char buf[8];
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struct sockaddr_in addr = {
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.sin_family = AF_INET,
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.sin_port = htons(31337),
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.sin_addr.s_addr = INADDR_ANY,
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};
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struct ip_mreq group = {
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.imr_multiaddr.s_addr = inet_addr("224.0.0.251"),
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.imr_interface.s_addr = INADDR_ANY,
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};
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EXPECT_SYS(0, 3, socket(AF_INET, SOCK_DGRAM, 0));
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EXPECT_SYS(0, 0, setsockopt(3, SOL_SOCKET, SO_REUSEADDR, &y, sizeof(y)));
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EXPECT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
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EXPECT_SYS(0, 0,
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setsockopt(3, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&group,
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sizeof(group)));
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g_shared->isworking = !g_testlib_failed;
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g_shared->ready = 1;
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if (g_shared->isworking) {
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ASSERT_SYS(0, 8, read(3, buf, 8));
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}
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ASSERT_SYS(0, 0, close(3));
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}
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void Sender(void) {
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int y = 1;
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char buf[8];
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struct sockaddr_in addr = {
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.sin_family = AF_INET,
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.sin_port = htons(31337),
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.sin_addr.s_addr = INADDR_ANY,
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};
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struct sockaddr_in dest = {
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.sin_family = AF_INET,
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.sin_port = htons(31337),
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.sin_addr.s_addr = inet_addr("224.0.0.251"),
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};
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struct ip_mreq group = {
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.imr_multiaddr.s_addr = inet_addr("224.0.0.251"),
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.imr_interface.s_addr = INADDR_ANY,
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};
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ASSERT_SYS(0, 3, socket(AF_INET, SOCK_DGRAM, 0));
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ASSERT_SYS(0, 0, setsockopt(3, SOL_SOCKET, SO_REUSEADDR, &y, sizeof(y)));
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ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
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ASSERT_SYS(0, 0,
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setsockopt(3, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&group,
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sizeof(group)));
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ASSERT_SYS(0, 8,
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sendto(3, buf, 8, 0, (struct sockaddr *)&dest, sizeof(dest)));
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ASSERT_SYS(0, 0, close(3));
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}
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TEST(multicast, test) {
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ASSERT_NE(NULL, (g_shared = _mapshared(FRAMESIZE)));
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SPAWN(fork);
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Receiver();
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PARENT();
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while (!g_shared->ready) {
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}
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if (g_shared->isworking) {
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Sender();
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}
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WAIT(exit, 0);
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munmap(g_shared, FRAMESIZE);
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}
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@ -82,6 +82,11 @@ o/$(MODE)/test/libc/sock/recvmsg_test.com.runs: \
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o/$(MODE)/test/libc/sock/shutdown_test.com.runs: \
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private .PLEDGE = stdio rpath wpath cpath fattr proc inet
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o/$(MODE)/test/libc/sock/multicast_test.com.runs: \
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private .UNSANDBOXED = 1
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o/$(MODE)/test/libc/sock/multicast_test.com.runs: \
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private .INTERNET = 1
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$(TEST_LIBC_SOCK_OBJS): test/libc/sock/test.mk
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.PHONY: o/$(MODE)/test/libc/sock
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