Network Programming -day1

Demand for network communication: target ip and port

Use socket library

udp transmitter

 1, we need to create a container

2, the setting information needs to be transmitted and ip, port

3, the socket is closed

Socket Import 
UDP_SOCKET = socket.socket (socket.AF_INET , socket.SOCK_DGRAM) # create a container, transmitted using a protocol udp 
udp_socket.sendto ( b'hahaha ' , ( "192.168.19.130" , 8080)), and the setting information transmitting # ip, port 
udp_socket.close ()

Receiver udp

1, need to bind a port

2, the data reception standby

3, the received display data

4, the socket is closed

 

socket Import 
UDP_SOCKET = socket.socket (socket.AF_INET , socket.SOCK_DGRAM) 
# create the socket 
local_add = ( "" , 7788) 
# port received 
udp_socket.bind (local_add) 
# bind port 
recv_data = udp_socket.recvfrom ( 1024) 
# waiting to receive data, 1024 represents the maximum number of bytes received 
Print (recv_data [ 0] .decode ( 'GBK')) 
# printing the received data, because there are two tuples, the received information, and transmitting party ip and port 
udp_socket.close () 
# close the socket