tcp server

# Node.js

const net = require("net");

function handler(socket) {
  socket.write("Received: ");
  socket.pipe(socket);
}

const server = net.createServer(handler);
server.listen(3000);

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Output

$ echo 'hello' | nc localhost 3000
Received: hello

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# Go

package main

import (
	"bufio"
	"net"
)

func handler(conn net.Conn) {
	defer conn.Close()
	reader := bufio.NewReader(conn)

	for {
		message, err := reader.ReadString('\n')
		if err != nil {
			return
		}

		conn.Write([]byte("Received: "))
		conn.Write([]byte(message))
	}
}

func main() {
	listener, err := net.Listen("tcp", ":3000")
	if err != nil {
		panic(err)
	}

	defer listener.Close()

	for {
		conn, err := listener.Accept()
		if err != nil {
			panic(err)
		}

		go handler(conn)
	}
}

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Output

$ echo 'hello' | nc localhost 3000
Received: hello

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编辑

#Go #Node.js

上次更新: 2022/09/30, 11:34:22

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