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Add multicast test that works on Linux

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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 2023-02-03 13:58:13 -08:00
parent 4b8874ceb9
commit d0ad50f5ae
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GPG key ID: BE714B4575D6E328
2 changed files with 111 additions and 0 deletions
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106
test/libc/sock/multicast_test.c Normal file
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@ -0,0 +1,106 @@
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2023 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/atomic.h"
#include "libc/calls/calls.h"
#include "libc/runtime/runtime.h"
#include "libc/sock/sock.h"
#include "libc/sock/struct/ip_mreq.h"
#include "libc/sock/struct/sockaddr.h"
#include "libc/sysv/consts/af.h"
#include "libc/sysv/consts/inaddr.h"
#include "libc/sysv/consts/ip.h"
#include "libc/sysv/consts/ipproto.h"
#include "libc/sysv/consts/so.h"
#include "libc/sysv/consts/sock.h"
#include "libc/sysv/consts/sol.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
struct Shared {
atomic_int ready;
atomic_int isworking;
} * g_shared;
void Receiver(void) {
int y = 1;
char buf[8];
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_port = htons(31337),
.sin_addr.s_addr = INADDR_ANY,
};
struct ip_mreq group = {
.imr_multiaddr.s_addr = inet_addr("224.0.0.251"),
.imr_interface.s_addr = INADDR_ANY,
};
EXPECT_SYS(0, 3, socket(AF_INET, SOCK_DGRAM, 0));
EXPECT_SYS(0, 0, setsockopt(3, SOL_SOCKET, SO_REUSEADDR, &y, sizeof(y)));
EXPECT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
EXPECT_SYS(0, 0,
setsockopt(3, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&group,
sizeof(group)));
g_shared->isworking = !g_testlib_failed;
g_shared->ready = 1;
if (g_shared->isworking) {
ASSERT_SYS(0, 8, read(3, buf, 8));
}
ASSERT_SYS(0, 0, close(3));
}
void Sender(void) {
int y = 1;
char buf[8];
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_port = htons(31337),
.sin_addr.s_addr = INADDR_ANY,
};
struct sockaddr_in dest = {
.sin_family = AF_INET,
.sin_port = htons(31337),
.sin_addr.s_addr = inet_addr("224.0.0.251"),
};
struct ip_mreq group = {
.imr_multiaddr.s_addr = inet_addr("224.0.0.251"),
.imr_interface.s_addr = INADDR_ANY,
};
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_DGRAM, 0));
ASSERT_SYS(0, 0, setsockopt(3, SOL_SOCKET, SO_REUSEADDR, &y, sizeof(y)));
ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
ASSERT_SYS(0, 0,
setsockopt(3, IPPROTO_IP, IP_ADD_MEMBERSHIP, (char *)&group,
sizeof(group)));
ASSERT_SYS(0, 8,
sendto(3, buf, 8, 0, (struct sockaddr *)&dest, sizeof(dest)));
ASSERT_SYS(0, 0, close(3));
}
TEST(multicast, test) {
ASSERT_NE(NULL, (g_shared = _mapshared(FRAMESIZE)));
SPAWN(fork);
Receiver();
PARENT();
while (!g_shared->ready) {
}
if (g_shared->isworking) {
Sender();
}
WAIT(exit, 0);
munmap(g_shared, FRAMESIZE);
}

5
test/libc/sock/test.mk
View file

@ -82,6 +82,11 @@ o/$(MODE)/test/libc/sock/recvmsg_test.com.runs: \
o/$(MODE)/test/libc/sock/shutdown_test.com.runs: \
private .PLEDGE = stdio rpath wpath cpath fattr proc inet
o/$(MODE)/test/libc/sock/multicast_test.com.runs: \
private .UNSANDBOXED = 1
o/$(MODE)/test/libc/sock/multicast_test.com.runs: \
private .INTERNET = 1
$(TEST_LIBC_SOCK_OBJS): test/libc/sock/test.mk
.PHONY: o/$(MODE)/test/libc/sock