python---tcp/ip網路編程

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重點總結：

服務端：一直運行（while true），監聽運行所在機器（ip）某連接埠，多線程或多進程接收用戶端的socket請求

用戶端：主動發起請求，需求知道伺服器的ip和連接埠

 

服務端：

# -*- coding:utf-8 -*-
import time
import socket
import threading
def tcplink(sock, addr):
    print ‘Accept new connection from %s:%s...‘ % addr
    sock.send(‘Welcome!‘)
    while True:
        data = sock.recv(1024)
        time.sleep(1)
        if data == ‘exit‘ or not data:
            break
        sock.send(‘Hello, %s!‘ % data)
    sock.close()
    print ‘Connection from %s:%s closed.‘ % addr


s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind((‘127.0.0.1‘, 9999))
s.listen(5)
print ‘Waiting for connection...‘
while True:
    # 接受一個新串連:
    time.sleep(5)
    print ‘sdasdasd‘
    sock, addr = s.accept()
    print sock
    print addr
    # 建立新線程來處理TCP串連:
    t = threading.Thread(target=tcplink, args=(sock, addr))
    t.start()

用戶端：

# -*- coding:utf-8 -*-
import time
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
# 建立串連:
s.connect((‘127.0.0.1‘, 9999))
# 接收歡迎訊息:
print s.recv(1024)
for data in [‘Michael‘, ‘Tracy‘, ‘Sarah‘]:
    # 發送資料:
    s.send(data)
    print s.recv(1024)
s.send(‘exit‘)
s.close()

python---tcp/ip網路編程