PHP 警告：socket_bind()：主机查找失败 [11001]：

Question

我已经在 YouTube 上尝试了所有可能的解决方案，Google 上的 Host Lookup 失败，但我仍然收到“PHP Warning: socket_bind(): Host lookup failed [11001]:”错误

这是我在 PHP 套接字上的代码。

 <?php
    define('HOST_NAME',"localhost"); 
    // define('HOST_NAME',"192.168.43.49"); 
    define('PORT',"2306");
    $null = NULL;
    
    class _sHandler {
        function send($message) {
            global $clientSocketArray;
            $messageLength = strlen($message);
            foreach($clientSocketArray as $clientSocket)
            {
                @socket_write($clientSocket,$message,$messageLength);
            }
            return true;
        }
    
        function unseal($socketData) {
            $length = ord($socketData[1]) & 127;
            if($length == 126) {
                $masks = substr($socketData, 4, 4);
                $data = substr($socketData, 8);
            }
            elseif($length == 127) {
                $masks = substr($socketData, 10, 4);
                $data = substr($socketData, 14);
            }
            else {
                $masks = substr($socketData, 2, 4);
                $data = substr($socketData, 6);
            }
            $socketData = "";
            for ($i = 0; $i < strlen($data); ++$i) {
                $socketData .= $data[$i] ^ $masks[$i%4];
            }
            return $socketData;
        }
    
        function seal($socketData) {
            $b1 = 0x80 | (0x1 & 0x0f);
            $length = strlen($socketData);
            
            if($length <= 125)
                $header = pack('CC', $b1, $length);
            elseif($length > 125 && $length < 65536)
                $header = pack('CCn', $b1, 126, $length);
            elseif($length >= 65536)
                $header = pack('CCNN', $b1, 127, $length);
            return $header.$socketData;
        }
    
        function doHandshake($received_header,$client_socket_resource, $host_name, $port) {
            $headers = array();
            $lines = preg_split("/\r\n/", $received_header);
            foreach($lines as $line)
            {
                $line = chop($line);
                if(preg_match('/\A(\S+): (.*)\z/', $line, $matches))
                {
                    $headers[$matches[1]] = $matches[2];
                }
            }
    
            $secKey = $headers['Sec-WebSocket-Key'];
            $secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
            $buffer  = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .
            "Upgrade: websocket\r\n" .
            "Connection: Upgrade\r\n" .
            "WebSocket-Origin: $host_name\r\n" .
            "WebSocket-Location: ws://$host_name:$port/demo/shout.php\r\n".
            "Sec-WebSocket-Accept:$secAccept\r\n\r\n";
            socket_write($client_socket_resource,$buffer,strlen($buffer));
        }
        
        function newConnectionACK($client_ip_address) {
            $message = 'New client ' . $client_ip_address.' joined';
            $messageArray = array('connection_message'=>$message,'connection_message_type'=>'chat-connection-ack');
            $ACK = $this->seal(json_encode($messageArray));
            return $ACK;
        }
        
        function connectionDisconnectACK($client_ip_address) {
            $message = 'Client ' . $client_ip_address.' disconnected';
            $messageArray = array('message'=>$message,'message_type'=>'chat-connection-ack');
            $ACK = $this->seal(json_encode($messageArray));
            return $ACK;
        }
        
    }
    $_sHandler = new _sHandler();
    
    $socketResource = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
    socket_set_option($socketResource, SOL_SOCKET, SO_REUSEADDR, 1);
    socket_bind($socketResource, 0, PORT);
    socket_listen($socketResource);
    
    $clientSocketArray = array($socketResource);
    while (true) {
        $newSocketArray = $clientSocketArray;
        socket_select($newSocketArray, $null, $null, 0, 10);
        
        if (in_array($socketResource, $newSocketArray)) {
            $newSocket = socket_accept($socketResource);
            $clientSocketArray[] = $newSocket;
            
            $header = socket_read($newSocket, 1024);
            $_sHandler->doHandshake($header, $newSocket, HOST_NAME, PORT);
            
            socket_getpeername($newSocket, $client_ip_address);
            $connectionACK = $_sHandler->newConnectionACK($client_ip_address);
            
            $_sHandler->send($connectionACK);
            
            $newSocketIndex = array_search($socketResource, $newSocketArray);
            unset($newSocketArray[$newSocketIndex]);
        }
        
        foreach ($newSocketArray as $newSocketArrayResource) {  
            while(socket_recv($newSocketArrayResource, $socketData, 1024, 0) >= 1){
                $socketMessage = $_sHandler->unseal($socketData);
                $messageObj = json_decode($socketMessage);
                $_sHandler->send($_sHandler->seal(json_encode($messageObj)));
                break 2;
            }
            
            $socketData = @socket_read($newSocketArrayResource, 1024, PHP_NORMAL_READ);
            if ($socketData === false) { 
                socket_getpeername($newSocketArrayResource, $client_ip_address);
                // $connectionACK = $_sHandler->connectionDisconnectACK($client_ip_address);
                $_sHandler->send($connectionACK);
                $newSocketIndex = array_search($newSocketArrayResource, $clientSocketArray);
                unset($clientSocketArray[$newSocketIndex]);         
            }
        }
    }
    socket_close($socketResource);

从第 94 行和第 95 行开始，我总是在这部分遇到错误：

$socketResource = socket_create(AF_INET, SOCK_STREAM, SOL_TCP);
socket_set_option($socketResource, SOL_SOCKET, SO_REUSEADDR, 1);
socket_bind($socketResource, 0, PORT);
socket_listen($socketResource);

我应该怎么做才能根据上图修复socketresource。

Answer 1

首先，您需要遵循正确的命令协议......

socket_bind($socketResource, 0, PORT);

第二个论点必须是一个地址.... enter link description here

这就是为什么您会收到有关“无效参数”的消息（告诉您问题-有点......）。

我尝试了您的代码，但它还有其他一些问题，但您的问题是关于这一行的错误，所以您似乎仍在处理它。

把你想连接的地址放在那里而不是“0”——这应该会让你重新开始。