如何使用套接字将信息从 javascript 发送到 python

Question

我想使用套接字将信息从我的 Node.js 代码发送到 Python。我怎样才能做到这一点？在伪代码中，我想要的是：js：sendInformation(information)Python：recieveInformation() sendNewInformation()js：recievNewInformation()

Answer 1

您应该确定哪个代码是服务器，哪个代码是客户端。我假设您的 Python 代码是您的服务器。您可以使用以下命令在 python 中运行服务器：

import socket

HOST = '0.0.0.0'

PORT = 9999    

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:

    s.bind((HOST, PORT))

    s.listen()

    conn, addr = s.accept()

    with conn:

        print('Connected by', addr)

        while True:

            data = conn.recv(1024)

            if not data:

                break

            conn.sendall(data)

然后你可以将你的 Nodejs 客户端代码连接到服务器：

var net = require('net');

var HOST = '127.0.0.1';

var PORT = 9999;

var client = new net.Socket();

client.connect(PORT, HOST, function() {

  console.log('CONNECTED TO: ' + HOST + ':' + PORT);

  // Write a message to the socket as soon as the client is connected, the server will receive it as message from the client

 client.write('Message from client');

});

// Add a 'data' event handler for the client socket

// data is what the server sent to this socket

client.on('data', function(data) {

  console.log('DATA: ' + data);

  // Close the client socket completely

  client.destroy();

});

// Add a 'close' event handler for the client socket

client.on('close', function() {

  console.log('Connection closed');

});