import socket

host = '127.0.0.1'

port = 9999

#创建一个tcp socket套接字

tcp_server = socket.socket(socket.AF_INIT, socket.SOCK.STREAM)

#绑定ip,port

tcp_server.bind((host, port))

#设置最大连接数

tcp_server.listen(5)

#监听

while True:

    client, address = tcp_server.accept()

    print "received from %s:%d" %(address[0], address[1])

    #设置接收字节

    request = client.recv(1024)

    print 'receive data %s' %request

    #发送接收成功通知

    client.send('ACK!')

    #关闭

    client.close()

import socket

target_host = '127.0.0.1'

target_port = 9999

#创建一个tcp socket套接字

tcp_client = socket.socket(socket.AF_INIT, socket.SOCK_STREAM)

#连接到目标

tcp_client.connect((target_host, target_port))

#发送数据

tcp_client.send('test')

#接收来自服务器的数据

response = tcp_client.recv(1024)

print response

tcp_client.close

import socket

host = '127.0.0.1'

port = 9999

udp_server = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

udp_server.bind((host, port))

print '..waiting for message..'

while True:

    data, address = udp_server.recvfrom(1024)

    print 'Received data %s for %s:%d' %(data, address[0], address[1])

    udp_server.sendto('success', address)

udp_server.close()

import socket

target_host = '127.0.0.1'

target_port = 9999

client = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)

client.sendto("AAABBBCCC", (target_host, target_port))

data, addr = client.recvfrom(4096)

print data

print addr
client.close()