Swoole 4.4：支持 CURL 协程化

时间 2019-11-06

标签 swoole 4.4 支持 curl 栏目 Linux 繁體版

原文原文链接

在4.4以前的版本中，Swoole一直不支持CURL协程化，在代码中没法使用curl。因为curl使用了libcurl库实现，没法直接hook它的socket，4.4版本使用Swoole\Coroutine\Http\Client模拟实现了curl的API，并在底层替换了curl_init等函数的C Handler。php

提示

CURL Hook的特性尚处于试验阶段，请勿在生产环境中直接使用
暂不支持文件上传、CURL Multi
仍然须要依赖curl，请务必安装curl扩展

支持的特性列表

GET/POST
Header
Cookie
Https

通过验证 Guzzle CURL彻底能够使用

开启

使用Runtime::enableCoroutine来开启CURL Hook。shell

默认不开启 CURL Hook

Swoole\Runtime::enableCoroutine(SWOOLE_HOOK_ALL);
Swoole\Runtime::enableCoroutine(SWOOLE_HOOK_CURL);

使用

$n = 10;
while($n--) {
    go(function () {
        $ch = curl_init();
        curl_setopt($ch, CURLOPT_URL, "http://www.xinhuanet.com/");
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        $output = curl_exec($ch);
        if ($output === FALSE) {
            echo "CURL Error:" . curl_error($ch);
        }
        curl_close($ch);
        echo strlen($output) . " bytes\n";
    });
}

要将上面两段代码合并到一个文件中执行

运行结果

htf@LAPTOP-0K15EFQI:~/swoole-src/examples$ time php curl.php
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes
177173 bytes

real    0m0.534s
user    0m0.031s
sys     0m0.297s

能够看到整个程序是并行的，进程没有任何阻塞。swoole

strace 跟踪

使用strace跟踪发现，全部系统调用均变成epoll+socket的异步非阻塞调用了。curl

epoll_create(512)                       = 3
mmap(NULL, 258048, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc038a50000
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc028910000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 4
fcntl(4, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(4, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(4, SOL_TCP, TCP_NODELAY, [1], 4) = 0
pipe([5, 6])                            = 0
fcntl(5, F_GETFL)                       = 0 (flags O_RDONLY)
fcntl(5, F_SETFL, O_RDONLY|O_NONBLOCK)  = 0
fcntl(6, F_GETFL)                       = 0x1 (flags O_WRONLY)
fcntl(6, F_SETFL, O_WRONLY|O_NONBLOCK)  = 0
epoll_ctl(3, EPOLL_CTL_ADD, 5, {EPOLLIN, {u32=5, u64=34359738373}}) = 0
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc028100000
mprotect(0x7fc028101000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc0288ffb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc0289009d0, tls=0x7fc028900700, child_tidptr=0x7fc0289009d0) = 55
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc0237f0000
mprotect(0x7fc0237f1000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc023fefb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc023ff09d0, tls=0x7fc023ff0700, child_tidptr=0x7fc023ff09d0) = 56
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc022fe0000
mprotect(0x7fc022fe1000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc0237dfb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc0237e09d0, tls=0x7fc0237e0700, child_tidptr=0x7fc0237e09d0) = 57
mmap(NULL, 8392704, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc0227d0000
mprotect(0x7fc0227d1000, 8388608, PROT_READ|PROT_WRITE) = 0
clone(child_stack=0x7fc022fcfb70, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, parent_tidptr=0x7fc022fd09d0, tls=0x7fc022fd0700, child_tidptr=0x7fc022fd09d0) = 58
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=513190000}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=513408000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc0225c0000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 8
fcntl(8, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(8, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(8, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=514359000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc0223b0000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 10
fcntl(10, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(10, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(10, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=515961000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc0221a0000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 9
fcntl(9, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(9, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(9, SOL_TCP, TCP_NODELAY, [1], 4) = 0
futex(0x7fffd9e01ce4, FUTEX_WAKE_PRIVATE, 1) = 1
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=517822000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021f90000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 7
fcntl(7, F_GETFL)                       = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(7, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(7, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=520138000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021b60000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 11
fcntl(11, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(11, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(11, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=521400000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021950000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 12
fcntl(12, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(12, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(12, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=523446000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021530000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 17
fcntl(17, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(17, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(17, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=524631000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021320000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 18
fcntl(18, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(18, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(18, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=525903000}) = 0
mmap(NULL, 2101248, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fc021110000
socket(AF_INET, SOCK_STREAM|SOCK_CLOEXEC, IPPROTO_IP) = 19
fcntl(19, F_GETFL)                      = 0x80002 (flags O_RDWR|O_CLOEXEC)
fcntl(19, F_SETFL, O_RDWR|O_NONBLOCK|O_CLOEXEC) = 0
setsockopt(19, SOL_TCP, TCP_NODELAY, [1], 4) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=527295000}) = 0
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}], 4096, 1000) = 1
read(5, "0T\340\331\377\177\0\0", 1024) = 8
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(8, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=636297000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 8, {EPOLLOUT, {u32=8, u64=38654705672}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=638815000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
brk(0x7fffd9e19000)                     = 0x7fffd9e19000
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}], 4096, 875) = 1
read(5, "\0u\333\331\377\177\0\0\20g\341\331\377\177\0\0\200W\340\331\377\177\0\0", 1024) = 24
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(4, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=643393000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLOUT, {u32=4, u64=38654705668}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(9, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=647077000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 9, {EPOLLOUT, {u32=9, u64=38654705673}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(10, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=648967000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLOUT, {u32=10, u64=38654705674}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=649672000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLOUT, {u32=8, u64=38654705672}}], 4096, 870) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 8, NULL)    = 0
getsockopt(8, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9e49000)                     = 0x7fffd9e49000
sendto(8, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(8, 0x7fffd9e28c70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 8, {EPOLLIN, {u32=8, u64=38654705672}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=655130000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}, {EPOLLOUT, {u32=4, u64=38654705668}}, {EPOLLOUT, {u32=9, u64=38654705673}}], 4096, 865) = 3
read(5, "\360l\341\331\377\177\0\0", 1024) = 8
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(7, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=657746000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLOUT, {u32=7, u64=38654705671}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
getsockopt(4, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(4, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
brk(0x7fffd9e79000)                     = 0x7fffd9e79000
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 9, NULL)    = 0
getsockopt(9, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(9, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(9, 0x7fffd9e68cb0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 9, {EPOLLIN, {u32=9, u64=38654705673}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=662268000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}, {EPOLLOUT, {u32=10, u64=38654705674}}, {EPOLLOUT, {u32=7, u64=38654705671}}], 4096, 859) = 3
read(5, "P~\341\331\377\177\0\0\320r\341\331\377\177\0\0px\341\331\377\177\0\0", 1024) = 24
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(17, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=664547000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLOUT, {u32=17, u64=38654705681}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(11, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=665490000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 11, {EPOLLOUT, {u32=11, u64=38654705675}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(12, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=667097000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 12, {EPOLLOUT, {u32=12, u64=38654705676}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 10, NULL)   = 0
getsockopt(10, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9ea9000)                     = 0x7fffd9ea9000
sendto(10, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(10, 0x7fffd9e88cd0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLIN, {u32=10, u64=38654705674}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 7, NULL)    = 0
getsockopt(7, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(7, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
brk(0x7fffd9ed9000)                     = 0x7fffd9ed9000
recvfrom(7, 0x7fffd9ea8cf0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLIN, {u32=7, u64=38654705671}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=670626000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=5, u64=34359738373}}, {EPOLLOUT, {u32=17, u64=38654705681}}, {EPOLLOUT, {u32=11, u64=38654705675}}], 4096, 855) = 3
read(5, "\20\212\341\331\377\177\0\0000\204\341\331\377\177\0\0", 1024) = 16
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(19, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=672183000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 19, {EPOLLOUT, {u32=19, u64=38654705683}}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
connect(18, {sa_family=AF_INET, sin_port=htons(80), sin_addr=inet_addr("123.125.76.136")}, 16) = -1 EINPROGRESS (Operation now in progress)
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=672576000}) = 0
epoll_ctl(3, EPOLL_CTL_ADD, 18, {EPOLLOUT, {u32=18, u64=38654705682}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL)   = 0
getsockopt(17, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(17, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(17, 0x7fffd9ec8d10, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=17, u64=38654705681}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 11, NULL)   = 0
getsockopt(11, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9f09000)                     = 0x7fffd9f09000
sendto(11, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(11, 0x7fffd9ee8d30, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 11, {EPOLLIN, {u32=11, u64=38654705675}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=674303000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLOUT, {u32=12, u64=38654705676}}], 4096, 992) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 12, NULL)   = 0
getsockopt(12, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(12, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
brk(0x7fffd9f39000)                     = 0x7fffd9f39000
recvfrom(12, 0x7fffd9f08d50, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 12, {EPOLLIN, {u32=12, u64=38654705676}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=687389000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLOUT, {u32=19, u64=38654705683}}, {EPOLLOUT, {u32=18, u64=38654705682}}], 4096, 984) = 2
epoll_ctl(3, EPOLL_CTL_DEL, 19, NULL)   = 0
getsockopt(19, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
sendto(19, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(19, 0x7fffd9f28d70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 19, {EPOLLIN, {u32=19, u64=38654705683}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 18, NULL)   = 0
getsockopt(18, SOL_SOCKET, SO_ERROR, [0], [4]) = 0
brk(0x7fffd9f69000)                     = 0x7fffd9f69000
sendto(18, "GET / HTTP/1.1\r\nHost: www.xinhua"..., 90, 0, NULL, 0) = 90
recvfrom(18, 0x7fffd9f48d90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 18, {EPOLLIN, {u32=18, u64=38654705682}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=232, tv_nsec=694225000}) = 0
time(NULL)                              = 1559698600 (2019-06-05T09:36:40+0800)
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 4096
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=399093000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
brk(0x7fffd9f59000)                     = 0x7fffd9f59000
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "V{\362b4\236\22\331\350H\357\313\374\314s\372N\3257\324\16\n\257\24H\217y\376\204P\3\206"..., 65536, 0, NULL, NULL) = 8192
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=460756000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "\374\346{V\311\306\246|0F\276\337\0\370`\22\224\7\253\312\306\200\262~\374\250\20'\317\233w\r"..., 65536, 0, NULL, NULL) = 8192
recvfrom(4, 0x7fffd9e48c90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 4, {EPOLLIN, {u32=4, u64=38654705668}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=465855000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
epoll_wait(3, [{EPOLLIN, {u32=4, u64=38654705668}}], 4096, -1) = 1
epoll_ctl(3, EPOLL_CTL_DEL, 4, NULL)    = 0
recvfrom(4, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
brk(0x7fffd9f99000)                     = 0x7fffd9f99000
close(4)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc028910000, 2101248)         = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=237, tv_nsec=479677000}) = 0
time(NULL)                              = 1559698604 (2019-06-05T09:36:44+0800)
epoll_wait(3, [{EPOLLIN, {u32=9, u64=38654705673}}, {EPOLLIN, {u32=7, u64=38654705671}}, {EPOLLIN, {u32=17, u64=38654705681}}, {EPOLLIN, {u32=11, u64=38654705675}}], 4096, -1) = 4
epoll_ctl(3, EPOLL_CTL_DEL, 9, NULL)    = 0
recvfrom(9, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 4096
recvfrom(9, 0x7fffd9e68cb0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 9, {EPOLLIN, {u32=9, u64=38654705673}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 7, NULL)    = 0
recvfrom(7, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 4096
recvfrom(7, "V{\362b4\236\22\331\350H\357\313\374\314s\372N\3257\324\16\n\257\24H\217y\376\204P\3\206"..., 65536, 0, NULL, NULL) = 4096
recvfrom(7, 0x7fffd9ea8cf0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 7, {EPOLLIN, {u32=7, u64=38654705671}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL)   = 0
recvfrom(17, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 8192
recvfrom(17, 0x7fffd9ec8d10, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=17, u64=38654705681}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 11, NULL)   = 0
recvfrom(11, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 8192
recvfrom(11, 0x7fffd9ee8d30, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 11, {EPOLLIN, {u32=11, u64=38654705675}}) = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=238, tv_nsec=747275000}) = 0
time(NULL)                              = 1559698606 (2019-06-05T09:36:46+0800)
madvise(0x7fffd9dcd000, 61440, MADV_DONTNEED) = 0
madvise(0x7fffd9e39000, 126976, MADV_DONTNEED) = 0
epoll_wait(3, [{EPOLLIN, {u32=8, u64=38654705672}}, {EPOLLIN, {u32=10, u64=38654705674}}, {EPOLLIN, {u32=12, u64=38654705676}}, {EPOLLIN, {u32=19, u64=38654705683}}, {EPOLLIN, {u32=18, u64=38654705682}}, {EPOLLIN, {u32=9, u64=38654705673}}, {EPOLLIN, {u32=7, u64=38654705671}}, {EPOLLIN, {u32=17, u64=38654705681}}], 4096, -1) = 8
epoll_ctl(3, EPOLL_CTL_DEL, 8, NULL)    = 0
recvfrom(8, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(8, 0x7fffd9e28c70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 8, {EPOLLIN, {u32=8, u64=38654705672}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 10, NULL)   = 0
recvfrom(10, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 12288
recvfrom(10, 0x7fffd9e88cd0, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 10, {EPOLLIN, {u32=10, u64=38654705674}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 12, NULL)   = 0
recvfrom(12, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(12, 0x7fffd9f08d50, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 12, {EPOLLIN, {u32=12, u64=38654705676}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 19, NULL)   = 0
recvfrom(19, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(19, 0x7fffd9f28d70, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 19, {EPOLLIN, {u32=19, u64=38654705683}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 18, NULL)   = 0
recvfrom(18, "HTTP/1.1 200 OK\r\nContent-Type: t"..., 65536, 0, NULL, NULL) = 20480
recvfrom(18, 0x7fffd9f48d90, 65536, 0, NULL, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_ADD, 18, {EPOLLIN, {u32=18, u64=38654705682}}) = 0
epoll_ctl(3, EPOLL_CTL_DEL, 9, NULL)    = 0
recvfrom(9, "V{\362b4\236\22\331\350H\357\313\374\314s\372N\3257\324\16\n\257\24H\217y\376\204P\3\206"..., 65536, 0, NULL, NULL) = 29504
recvfrom(9, "\23\1_\243'\240C\301\37649\31\314\255\236\344f\22\305_\357hojll0FS\240\t\254"..., 65536, 0, NULL, NULL) = 6439
close(9)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc0221a0000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 7, NULL)    = 0
recvfrom(7, "3\231\3\372\375\"\271e\271cZ\343bb\251\331\314\227\323L\257\224\311\324\335\276(D\323\341\242\31"..., 65536, 0, NULL, NULL) = 31847
close(7)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021f90000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL)   = 0
recvfrom(17, "3\231\3\372\375\"\271e\271cZ\343bb\251\331\314\227\323L\257\224\311\324\335\276(D\323\341\242\31"..., 65536, 0, NULL, NULL) = 31847
close(17)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021530000, 2101248)         = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=238, tv_nsec=783851000}) = 0
time(NULL)                              = 1559698606 (2019-06-05T09:36:46+0800)
epoll_wait(3, [{EPOLLIN, {u32=11, u64=38654705675}}, {EPOLLIN, {u32=8, u64=38654705672}}, {EPOLLIN, {u32=10, u64=38654705674}}, {EPOLLIN, {u32=12, u64=38654705676}}, {EPOLLIN, {u32=19, u64=38654705683}}, {EPOLLIN, {u32=18, u64=38654705682}}], 4096, -1) = 6
epoll_ctl(3, EPOLL_CTL_DEL, 11, NULL)   = 0
recvfrom(11, "3\231\3\372\375\"\271e\271cZ\343bb\251\331\314\227\323L\257\224\311\324\335\276(D\323\341\242\31"..., 65536, 0, NULL, NULL) = 31847
close(11)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021b60000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 8, NULL)    = 0
recvfrom(8, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(8)                                = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc0225c0000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 10, NULL)   = 0
recvfrom(10, "\374\346{V\311\306\246|0F\276\337\0\370`\22\224\7\253\312\306\200\262~\374\250\20'\317\233w\r"..., 65536, 0, NULL, NULL) = 27751
close(10)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc0223b0000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 12, NULL)   = 0
recvfrom(12, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(12)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021950000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 19, NULL)   = 0
recvfrom(19, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(19)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021110000, 2101248)         = 0
epoll_ctl(3, EPOLL_CTL_DEL, 18, NULL)   = 0
recvfrom(18, "\3442@o\362\340\10\240#\337=J2=\274\337\201\307=3O\324\342\35s7\\\16\7^\"\23"..., 65536, 0, NULL, NULL) = 19559
close(18)                               = 0
write(1, "177115 bytes\n", 13)          = 13
munmap(0x7fc021320000, 2101248)         = 0
clock_gettime(CLOCK_MONOTONIC, {tv_sec=238, tv_nsec=802835000}) = 0
time(NULL)                              = 1559698606 (2019-06-05T09:36:46+0800)
futex(0x7fffd9e01ce0, FUTEX_WAKE_PRIVATE, 2147483647) = 4
futex(0x7fffd9e01c90, FUTEX_WAKE_PRIVATE, 1) = 1
futex(0x7fc023ff09d0, FUTEX_WAIT, 56, NULL) = -1 EAGAIN (Resource temporarily unavailable)
epoll_ctl(3, EPOLL_CTL_DEL, 5, NULL)    = 0
close(5)                                = 0
close(6)                                = 0
close(2)                                = 0
close(1)                                = 0
close(0)                                = 0
munmap(0x7fc028fa0000, 2231560)         = 0
munmap(0x7fc028d1f000, 2624568)         = 0
close(3)                                = 0