我可以使用 libevent 制作一个简单的 php websocket 服务器,但是当我尝试使其成为多处理时我被卡住了。
例如这是单一处理
<?php
$socket = stream_socket_server ('tcp://0.0.0.0:2000', $errno, $errstr);
stream_set_blocking($socket, 0);
$base = event_base_new();
$event = event_new();
event_set($event, $socket, EV_READ | EV_PERSIST, 'ev_accept', $base);
event_base_set($event, $base);
event_add($event);
event_base_loop($base);
$GLOBALS['connections'] = array();
$GLOBALS['buffers'] = array();
function ev_accept($socket, $flag, $base) {
static $id = 0;
$connection = stream_socket_accept($socket);
stream_set_blocking($connection, 0);
$id += 1;
$buffer = event_buffer_new($connection, 'ev_read', NULL, 'ev_error', $id);
event_buffer_base_set($buffer, $base);
event_buffer_timeout_set($buffer, 30, 30);
event_buffer_watermark_set($buffer, EV_READ, 0, 0xffffff);
event_buffer_priority_set($buffer, 10);
event_buffer_enable($buffer, EV_READ | EV_PERSIST);
// we need to save both buffer and connection outside
$GLOBALS['connections'][$id] = $connection;
$GLOBALS['buffers'][$id] = $buffer;
}
function ev_error($buffer, $error, $id) {
event_buffer_disable($GLOBALS['buffers'][$id], EV_READ | EV_WRITE);
event_buffer_free($GLOBALS['buffers'][$id]);
fclose($GLOBALS['connections'][$id]);
unset($GLOBALS['buffers'][$id], $GLOBALS['connections'][$id]);
}
function ev_read($buffer, $id) {
while ($read = event_buffer_read($buffer, 256)) {
var_dump($read);
}
}
?>
但是当我在函数 ev_read 中这样做时
function ev_read($buffer, $id) {
while ($read = event_buffer_read($buffer, 256)) {
$pid = pcntl_fork();
switch ($pid) {
case -1: // Error
die('Fork failed, your system is b0rked!');
break;
case 0: // Child
event_buffer_write($buffer,"asdawdasd");
exit(0);
break;
}
} }
它不发送数据...
那么如何制作一个多处理 php 套接字服务器呢?