Simple client server model (example of C ++, Python, And go LANGUAGE)

Used in workC/SThe model does nothing more than sending data to the server, but the development stage will encounterProgramIn its own loop test, a simple server needs to be used to verify the correctness of data transmission.

For software writingC ++For testingPython, This time is just to seeGoLanguage, so there must beDemo. The functions of the following three groups of programs are the same. Here we will summarize them.

I,C ++Implementation

Boost. ASIO Is a cross-platform C ++ Library, which uses modern C ++ Method: Network and bottom layer I/O The program provides consistent asynchronous I/O Model.For cross-platform use Boost Library implementation, as follows.

ServerCode:

 1   /*  
  2   File: SVR. cpp
  3   Author: Mike
  4  E-mail: Mike_Zhang@live.com
  5   */ 
 6  
 7 # Include <iostream>
 8 # Include <boost/ASIO. HPP>
 9  
 10   Using Boost: ASIO: IP: TCP;
 11   Enum {Max_length = 1024 };
12  
 13 Typedef boost: shared_ptr <TCP: Socket> socket_ptr;
 14  
 15   Int Main ()
 16 {
 17 Boost: ASIO: io_service;
 18 TCP: acceptor A (io_service, TCP: endpoint (TCP: V4 (), atoi ( "  12345  " )));
19       For (;;)
 20 {
 21 Socket_ptr sock ( New TCP: socket (io_service ));
 22 A. Accept (* sock );
 23           Char Data [max_length];
 24 Boost: System: error_code error;
 25 Size_t length = sock-> read_some (boost: ASIO: buffer (data), error );
 26 Data [length] = 0 ;
 27 STD: cout <data <STD: Endl;
 28 Sock-> close ();
 29 }
 30       Return   0 ;
 31 }

Client code:

 1   /* 
  2   File: cli. cpp
  3   Author: Mike
  4   E-mail: Mike_Zhang@live.com
  5   */ 
 6 # Include <iostream>
 7 # Include <boost/ASIO. HPP>
 8  
 9   Using Boost: ASIO: IP: TCP;
 10   Enum {Max_length = 1024 };
 11  
 12   Int Main ( Int Argc, Char * Argv [])
 13 {
 14 Boost: ASIO: io_service;
 15 TCP: resolver (io_service );
16 TCP: resolver: Query query (TCP: V4 (), "  127.0.0.1  " , "  12345  " );
 17 TCP: resolver: iterator = resolver. Resolve (query );
 18  
 19 TCP: Socket S (io_service );
 20 S. Connect (* iterator );
 21  
 22 STD: cout < "  Please input:  " ;
 23       Char Request [max_length];
 24 STD: cin. Getline (request, max_length );
 25 Size_t request_length = strlen (request );
 26 Boost: ASIO: Write (S, boost: ASIO: buffer (request, request_length ));
 27      Return   0 ;
 28 }

Compile: G ++ cli. cpp-O cli-lboost_system-lboost_thread-mt

II,PythonImplementation

Server code:

 1   '''  
  2   File: SVR. py
  3   Author: Mike
  4  E-mail: Mike_Zhang@live.com
  5   ''' 
 6   Import Socket, OS
 7 Sock = socket. socket (socket. af_inet, socket. sock_stream)
 8 Sock. BIND (( '  127.0.0.1  ' , 12345 ))
 9 Sock. Listen (5)
 10  While True:
 11 Connection, address = sock. Accept ()
 12 Buf = connection. Recv (1024)
 13       Print Buf
 14 Connection. Close ()

Client code:

 1   '''  
  2   File: cli. py
  3  Author: Mike
  4   E-mail: Mike_Zhang@live.com
  5   ''' 
 6   Import Socket
 7 Sock = socket. socket (socket. af_inet, socket. sock_stream)
 8 Sock. Connect (( '  127.0.0.1  ' , 12345 ))
 9  #  Sock. Send ('test \ n ')  
  10 Sock. Send (raw_input ( "  Please input:  " ))
 11 Sock. Close ()

III,GoLanguage implementation

Server code:

 1 /*
 2 File: SVR. Go
 3 Author: Mike
 4 E-mail: Mike_Zhang@live.com
 5 */
 6 Package main
 7  
 8 Import (
 9 "Net"
 10 "FMT"
 11 "Bufio"
 12 )
 13  
14 Func main (){
 15 Client, err: = Net . Listen ("TCP", "127.0.0.1: 12345 ")
 16       If Err! = Nil {
 17 FMT. printf ("error: % s \ n", Err. String ())
 18 }
 19       For {
 20           If C, err: = client. Accept (); err = nil {
 21 Defer C. Close ()
 22 Line, _: = bufio. newreader (c). readstring ('\ n ')
 23 FMT. println (line)
 24 }
 25 }
 26 }

Client code:

 1 /*
 2 File: cli. Go
 3 Author: Mike
 4 E-mail: Mike_Zhang@live.com
 5 */
 6 Package main
 7  
 8 Import (
 9 "Net"
 10 "FMT"
 11 )
 12  
 13 Func main (){
14 Conn, err: = Net . Dial ("TCP", "127.0.0.1: 12345 ")
 15       If Err! = Nil {
 16 FMT. printf ("error: % s \ n", Err. String ())
 17 }
 18 Conn. Write ([] Byte ("just a test "))
 19 }

Running Effect (GoLanguage example ):

Okay, that's all. I hope it will help you.