Python Socket basic Usage

Sockets are also commonly referred to as sockets, which are used to connect to the server client and are a handle to a communication chain, where an application usually makes a request to the network through a socket or answers a network request.

Just like Python does with file:

File is open for one of the files--read-write-off

The socket is open for the server client--read-write-off

Server section:

Importsocket,sysserver_address=('127.0.0.1', 8000) Buf_size=1024Try: Server_sk=Socket.socket (socket.af_inet, socket. SOCK_STREAM) #创建新的socket对象exceptsocket.error, msg:Print "socket create fail, error code:"+ str (msg[0]) +'error message:'+ msg[1]Print 'Socket Create successfully'Try: Server_sk.bind (server_address) #绑定server地址, address depends on family of addresses, Af_inet is expressed in tuplesexceptsocket.error, msg:Print "socket bind address error:"+ str (msg[0]) +'Error Mssage:'+ msg[1]Print 'socket bind address successfully'Server_sk.listen (5)Print "Listening ..." whileTrue:client_sk, Client_addr=server_sk.accept ()Print "connected by:", Client_addr whileTrue:data=client_sk.recv (buf_size)Printdata Client_sk.sendall (data) server_sk.close ()

Parameter one: Address cluster socket.af_inet IPv4 (default) Socket.af_inet6 IPv6

Parameter two: type socket. Sock_stream streaming socket, for TCP (default) socket. SOCK_DGRAM datagram socket, for UDP

Client section:

Importsocket,sysserver_address=('127.0.0.1', 8000) Buf_size=1024Try: Client_sk=Socket.socket (socket.af_inet, socket. SOCK_STREAM)exceptsocket.error, msg:Print "socket create fail, error code:"+ str (msg[0]) +'error message:'+ msg[1]client_sk.connect (server_address) whileTrue:data= Raw_input ('Please input your sending message->')   if  notData:Print "input data cannot is empty, please input again ."      Continueclient_sk.sendall (data) Recv_data=client_sk.recv (buf_size)Printrecv_dataclient_sk.close ()

Server output:

Socket Create successfully
Socket BIND address successfully
Listening ...
Connected by: (' 127.0.0.1 ', 63388)
Aa

Client output:

Please input your sending MESSAGE->AA
Aa
Please input your sending message->

Python Socket basic Usage