2022年1月7日 星期五

Python TCP Client 客戶端程式 (定時傳送資料)

Python TCP Client 客戶端程式 (定時傳送資料)


#!/usr/bin/env python3

'''

TCP Client 的流程分為以下幾大步驟:


建立 socket:s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

連線至遠端地址:s.connect()

傳送資料:s.send()、s.sendall()

接收資料:s.recv()

傳輸完畢後,關閉 socket:s.close()

'''

# -*- coding: utf-8 -*-

import socket

import time


HOST = '127.0.0.1'

PORT = 7002


s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

s.connect((HOST, PORT))

i=0

while True:

    i=i+1

    outdata = 'heartbeat' + str(i)

    print('send: ' + outdata)

    s.send(outdata.encode())

    

    indata = s.recv(1024)

    if len(indata) == 0: # connection closed

        s.close()

        print('server closed connection.')

        break

    print('recv: ' + indata.decode())


    time.sleep(2)

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