对于tcp server 端的创建而言, 分为如下步骤:
1,创建socket对象(socket):其中俩个参数分别为
Address Family(如AF_INET为ipv4),AF_INET6为ipv6,AF_UNIX为unix域协议簇).
socket类型(如SOCK_STREAM为tcp,SOCK_DGRAM为udp)
2,绑定服务器地址(bind) : 参数为服务器地址二元组 也就是套接字
3,监听(listen): 参数为允许的连接数
4,等待请求(accpet): 建立一个连接,等待客户端
5,接收数据(recv,recvfrom ,recvfrom_into ,recv_into)
6,发送数据(send ,senfall ,sendto)
7,关闭连接(close)
代码:
#! /usr/bin/python
# -*- coding: utf-8 -*-
import socket
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server_address = ("127.0.0.1",12345)
print "Staring up on %s:%s" % server_address
sock.bind(server_address)
sock.listen(5)
while True:
print "waiting .........."
connetion,client_address = sock.accept()
try:
print "Connection from ",client_address
data = connetion.recv(1024)
print "Receive '%s'" % data
finally:
connetion.close()
对于tcp client端而言 , 分为以下几个步骤:
1,创建socket对象( socket) : 同server端
2,连接服务器(connect) : 参数为服务器地址二元组
3,发送和接收数据: 同server端
4,关闭连接 : 同server端
代码:
#! /usr/bin/python
# -*- coding: utf-8 -*-
import socket
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
def check_tcp_status(ip,port):
sock = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
server_address = (ip,port)
print "connecting to %s:%s" % server_address,port
sock.connect(server_address)
message = raw_input("pleas input: ")
print "Sending '%s'" % message
sock.sendall(message)
print "Closing socket"
sock.close()
if __name__ == "__main__":
print check_tcp_status("127.0.0.1",12345)