cosmopolitan/test/libc/sock/nonblock_test.c
Jōshin e16a7d8f3b
flip et / noet in modelines
`et` means `expandtab`.

```sh
rg 'vi: .* :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\) et\(.*\)  :vi/vi: \1 xoet\2:vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)noet\(.*\):vi/vi: \1et\2  :vi/'
rg 'vi: .*  :vi' -l -0 | \
  xargs -0 sed -i '' 's/vi: \(.*\)xoet\(.*\):vi/vi: \1noet\2:vi/'
```
2023-12-07 22:17:11 -05:00

128 lines
5.6 KiB
C

/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│ vi: set et 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/calls/calls.h"
#include "libc/dce.h"
#include "libc/errno.h"
#include "libc/intrin/kprintf.h"
#include "libc/intrin/strace.internal.h"
#include "libc/runtime/runtime.h"
#include "libc/runtime/syslib.internal.h"
#include "libc/sock/sock.h"
#include "libc/sock/struct/sockaddr.h"
#include "libc/sysv/consts/af.h"
#include "libc/sysv/consts/f.h"
#include "libc/sysv/consts/ipproto.h"
#include "libc/sysv/consts/limits.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/sock.h"
#include "libc/testlib/subprocess.h"
#include "libc/testlib/testlib.h"
#include "libc/thread/thread.h"
TEST(O_NONBLOCK, canBeSetBySocket_toMakeListenNonBlocking) {
// TODO(jart): this doesn't make any sense on windows
if (IsWindows()) return;
char buf[16] = {0};
uint32_t addrsize = sizeof(struct sockaddr_in);
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(0x7f000001),
};
pthread_spinlock_t *phaser = _mapshared(4096);
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM | SOCK_NONBLOCK, IPPROTO_TCP));
ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
SPAWN(fork);
ASSERT_SYS(EAGAIN, -1, accept(3, (struct sockaddr *)&addr, &addrsize));
EXPECT_EQ(0, pthread_spin_unlock(phaser + 0));
for (;;) {
int e = errno;
int fd = accept(3, (struct sockaddr *)&addr, &addrsize);
if (fd == -1 && errno == EAGAIN) {
errno = e;
usleep(1000);
continue;
}
ASSERT_SYS(0, 4, fd);
break;
}
ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
EXPECT_EQ(0, pthread_spin_unlock(phaser + 1));
EXPECT_SYS(0, 0, close(4));
EXPECT_SYS(0, 0, close(3));
PARENT();
EXPECT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
EXPECT_SYS(0, 5, read(3, buf, 16));
EXPECT_STREQ("hello", buf);
EXPECT_SYS(0, 0, close(3));
WAIT(exit, 0);
munmap(phaser, 4096);
}
TEST(O_NONBLOCK, canBeTunedWithFcntl_toMakeReadNonBlocking) {
char buf[16] = {0};
uint32_t addrsize = sizeof(struct sockaddr_in);
struct sockaddr_in addr = {
.sin_family = AF_INET,
.sin_addr.s_addr = htonl(0x7f000001),
};
pthread_spinlock_t *phaser = _mapshared(4096);
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
ASSERT_SYS(0, 0, bind(3, (struct sockaddr *)&addr, sizeof(addr)));
ASSERT_SYS(0, 0, getsockname(3, (struct sockaddr *)&addr, &addrsize));
ASSERT_SYS(0, 0, listen(3, SOMAXCONN));
SPAWN(fork);
ASSERT_SYS(0, 4, accept(3, (struct sockaddr *)&addr, &addrsize));
EXPECT_EQ(0, pthread_spin_lock(phaser + 0));
ASSERT_SYS(0, 5, send(4, "hello", 5, 0));
EXPECT_EQ(0, pthread_spin_lock(phaser + 1));
EXPECT_SYS(0, 0, close(4));
EXPECT_SYS(0, 0, close(3));
PARENT();
EXPECT_SYS(0, 0, close(3));
ASSERT_SYS(0, 3, socket(AF_INET, SOCK_STREAM, IPPROTO_TCP));
ASSERT_SYS(0, O_RDWR, fcntl(3, F_GETFL));
ASSERT_SYS(0, 0, connect(3, (struct sockaddr *)&addr, sizeof(addr)));
ASSERT_SYS(0, 0, fcntl(3, F_SETFL, O_RDWR | O_NONBLOCK));
ASSERT_SYS(EAGAIN, -1, read(3, buf, 16));
EXPECT_EQ(0, pthread_spin_unlock(phaser + 0));
TryAgain:
int e = errno;
ssize_t rc = read(3, buf, 16);
if (rc == -1 && errno == EAGAIN) {
errno = e;
usleep(1000);
goto TryAgain;
}
EXPECT_SYS(0, 5, rc);
EXPECT_STREQ("hello", buf);
EXPECT_EQ(0, pthread_spin_unlock(phaser + 1));
EXPECT_SYS(0, 0, close(3));
WAIT(exit, 0);
munmap(phaser, 4096);
}