我要做的是设置一个php websocket服务器来运行聊天应用程序。我尝试过使用Ratchet php，它可以启动并运行一个简单的聊天应用程序，但我意识到它不符合我的特定需求。
我的开发环境是在ubuntu vm Homestead框上设置的。
我要摘自this site的例子。我已将地址和端口更改为我的网站。当我启动服务器它运行正常，我可以使用telnet连接。但是，当我通过telnet发送消息时，握手失败并且断开连接。
这是php websocket服务器代码（这些评论适合我，所以我可以尝试更好地了解最新情况）：
#!/usr/local/bin/php
<?php
$port = 8080;
// create a streaming socket, of type TCP/IP
$sock = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
// set the option to reuse the port
socket_set_option($sock, SOL_SOCKET, SO_REUSEADDR, 1);
// "bind" the socket to the address to "localhost", on port $port
// so this means that all connections on this port are now our resposibility to send/recv data, disconnect, etc..
socket_bind($sock, 'example.app', $port);
// start listen for connections
socket_listen($sock);
// create a list of all the clients that will be connected to us..
// add the listening socket to this list
$clients = array($sock);
while (true) {
// create a copy, so $clients doesn't get modified by socket_select()
$read = $clients;
// get a list of all the clients that have data to be read from
// if there are no clients with data, go to next iteration
if (socket_select($read, $write = NULL, $except = NULL, 0) < 1)
continue;
// check if there is a client trying to connect
if (in_array($sock, $read)) {
// accept the client, and add him to the $clients array
$clients[] = $newsock = socket_accept($sock);
// send the client a welcome message
socket_write($newsock, "no noobs, but ill make an exception :)\n" .
"There are " . (count($clients) - 1) . " client(s) connected to the server\n");
socket_getpeername($newsock, $ip);
echo "New client connected: {$ip}\n";
// remove the listening socket from the clients-with-data array
$key = array_search($sock, $read);
unset($read[$key]);
}
// loop through all the clients that have data to read from
foreach ($read as $read_sock) {
// read until newline or 1024 bytes
// socket_read while show errors when the client is disconnected, so silence the error messages
$data = @socket_read($read_sock, 1024, PHP_NORMAL_READ);
// check if the client is disconnected
if ($data === false) {
// remove client for $clients array
$key = array_search($read_sock, $clients);
unset($clients[$key]);
echo "client disconnected.\n";
// continue to the next client to read from, if any
continue;
}
// trim off the trailing/beginning white spaces
$data = trim($data);
// check if there is any data after trimming off the spaces
if (!empty($data)) {
// send this to all the clients in the $clients array (except the first one, which is a listening socket)
foreach ($clients as $send_sock) {
// if its the listening sock or the client that we got the message from, go to the next one in the list
if ($send_sock == $sock || $send_sock == $read_sock)
continue;
// write the message to the client -- add a newline character to the end of the message
socket_write($send_sock, $data . "\n");
} // end of broadcast foreach
}
} // end of reading foreach
}
// close the listening socket
socket_close($sock);
?>
浏览器控制台显示此错误：
WebSocket与＆＃39; ws：//example.app：8080 /＆＃39;的连接失败：在收到握手响应之前关闭连接