python局域网通信_树莓派与PC端在局域网内运用python实现即时通讯

电脑和树莓派在同一局域网内，先在电脑和树莓派创建python运行环境，然后在树莓派中用python运行rpi.py；在电脑上运行computer.py；电脑上输入字符即可在树莓派上即时显示！

rpi.py

#coding:utf-8

#import necessary package

import socket

import time

import sys

HOST_IP = "192.168.31.151" #树莓派的IP地址

HOST_PORT = 8888

print("Starting socket: TCP...")

#1.create socket object:socket=socket.socket(family,type)

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

print("TCP server listen @ %s:%d!" %(HOST_IP, HOST_PORT) )

host_addr = (HOST_IP, HOST_PORT)

#2.bind socket to addr:socket.bind(address)

socket_tcp.bind(host_addr)

#3.listen connection request:socket.listen(backlog)

socket_tcp.listen(1)

#4.waite for client:connection,address=socket.accept()

socket_con, (client_ip, client_port) = socket_tcp.accept()

print("Connection accepted from %s." %client_ip)

socket_con.send("Welcome to RPi TCP server!")

print("Receiving package...")

###主循环

while True:

try:

data=socket_con.recv(512)

if len(data)>0:

print("Received:%s"%data)

socket_con.send(data)

time.sleep(1)

continue

except Exception:

socket_tcp.close()

sys.exit(1)

computer.py

import socket

import time

import sys

SERVER_IP = "192.168.31.151" #树莓派的IP地址

SERVER_PORT = 8888

print("Starting socket: TCP...")

server_addr = (SERVER_IP, SERVER_PORT)

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

while True:

try:

print("Connecting to server @ %s:%d..." %(SERVER_IP, SERVER_PORT))

socket_tcp.connect(server_addr)

break

except Exception:

print("Can't connect to server,try it latter!")

time.sleep(1)

continue

print("Please input:")

while True:

try:

data = socket_tcp.recv(512)

if len(data)>0:

print("Received: %s" % data)

command=raw_input()

socket_tcp.send(command)

time.sleep(1)

continue

except Exception:

socket_tcp.close()

socket_tcp=None

sys.exit(1)

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