java 服务器和 php 客户端之间的 SocketServer 通信

Question

我正在尝试在 Java 中的 SocketServer（服务器）和 php 中的 Socket（客户端）之间建立通信。客户端能够连接到主机，客户端能够发送消息并且服务器成功读取消息。但是问题出现在SocketServer向Client写入的时候，客户端收不到服务器的消息。

我已经阅读了关于同一场景的其他问题（java-php 套接字通信），但我似乎无法找到导致问题的原因。

如果我使用 Java 套接字作为客户端，那么双向通信都可以完美地进行。

服务器：

import java.io.*;
import java.net.ServerSocket;
import java.net.Socket;

public class Server {

    protected ServerSocket socket;
    protected final int port = 9005;
    protected Socket connection;
    protected String command = new String();
    protected String responseString = new String();

    public void init(){

        System.out.println( "Launching Server: " );
        try{
            socket = new ServerSocket(port);


            while(true)
            {
                // open socket
                connection = socket.accept();
                System.out.println( "Client Connected " );

                // get input reader
                InputStreamReader inputStream = new InputStreamReader(connection.getInputStream());
                BufferedReader input = new BufferedReader(inputStream);

                // get input
                command = input.readLine();

                // process input
                System.out.println("Command: " + command);
                responseString = command + " MC2 It Works!";

                // get output handler
                PrintStream response = new PrintStream(connection.getOutputStream());

                // send response
                response.println(responseString);
            }
        }
        catch (IOException e){
            e.printStackTrace();
        }
    }
}

客户：

class Client {

    private $address;
    private $port;

    public function __construct($address, $port){
        $this->address = $address;
        $this->port = $port;
        $this->init();
    }

    private function init(){

        //create socket
        if(! $socket = socket_create(AF_INET, SOCK_STREAM, getprotobyname('tcp'))){
            $this->showError("socket create");
        };

        //establish connection
        socket_connect($socket, $this->address, $this->port);

        //write to server
        $message = "I am a client";
        socket_write($socket, $message, strlen($message)); //Send data

        echo "Listening to Server\n";

        //read from server
        if(!$reponse = socket_read($socket, 2048, PHP_NORMAL_READ)){
            $this->showError("socket read");
        }

        //print response
        echo "Response from server------------------\n";
        echo $reponse;

        socket_close($socket);

    }

    private function showError($message){
        echo ("Error: ".$message);
        exit(666);

    }

}

$address="localhost";$port=9005;
echo "Testing Client Server\n";
$client = new Client($address, $port);

有人可以指导我解决这里的问题吗？

Answer 1

在服务器端，代码需要一行（以换行符结束），在php 你发送

socket_write($socket, $message, strlen($message));

请相应地检查您发送的数据，确保您发送了换行符。

java 服务器和 php 客户端之间的 SocketServer 通信

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