Sending string via socket python

Question

I have two scripts  Server py and Client py   I have two objectives in mind     To be able to send data again and again to server from client   To be able to send data from Server to client     here is my Server py     import socket  serversocket   socket socket socket AF INET  socket SOCK STREAM  host    192 168 1 3  port   8000 print  host  print  port  serversocket bind  host  port    serversocket listen 5  print   server started and listening   while 1       clientsocket  address    serversocket accept       print   connection found        data   clientsocket recv 1024  decode       print  data      r  REceieve      clientsocket send r encode      and here is my client           usr bin python3  import socket  s   socket socket socket AF INET  socket SOCK STREAM  host   192 168 1 3  port  8000 s connect  host port    def ts str      s send  e  encode        data         data   s recv 1024  decode      print  data   while 2     r   input  enter      ts s   s close      The function works for the first time   e  goes to the server and I get return message back   but how do I make it happen over and over again  something like a chat application    The problem starts after the first time  The messages don t go after the first time   what am I doing wrong   I am new with python  so please be a little elaborate  and if you can  please give the source code of the whole thing

User · Answer

This piece of code is incorrect   while 1       clientsocket  address    serversocket accept       print   connection found        data   clientsocket recv 1024  decode       print  data      r  REceieve      clientsocket send r encode      The call on accept   on the serversocket blocks until there s a client connection  When you first connect to the server from the client  it accepts the connection and receives data  However  when it enters the loop again  it is waiting for another connection and thus blocks as there are no other clients that are trying to connect   That s the reason the recv works correct only the first time  What you should do is find out how you can handle the communication with a client that has been accepted - maybe by creating a new Thread to handle communication with that client and continue accepting new clients in the loop  handling them in the same way   Tip  If you want to work on creating your own chat application  you should look at a networking engine like Twisted  It will help you understand the whole concept better too

User · Answer

import socket from threading import    serversocket   socket socket socket AF INET  socket SOCK STREAM  host    192 168 1 3  port   8000 print  host  print  port  serversocket bind  host  port    class client Thread       def   init   self  socket  address           Thread   init   self          self sock   socket         self addr   address         self start        def run self           while 1              print  Client sent    self sock recv 1024  decode                self sock send b Oi you sent something to me    serversocket listen 5  print   server started and listening   while 1      clientsocket  address   serversocket accept       client clientsocket  address    This is a very VERY simple design for how you could solve it  First of all  you need to either accept the client  server side  before going into your while 1 loop because in every loop you accept a new client  or you do as i describe  you toss the client into a separate thread which you handle on his own from now on

User · Answer

client py   import socket  s   socket socket   s connect   127 0 0 1  12345   while True      str   raw input  S         s send str encode         if str     Bye  or str     bye            break     print  N   s recv 1024  decode   s close     server py  import socket  s   socket socket   port   12345 s bind      port   s listen 5  c  addr   s accept   print  Socket Up and running with a connection from  addr while True      rcvdData   c recv 1024  decode       print  S   rcvdData     sendData   raw input  N         c send sendData encode        if sendData     Bye  or sendData     bye            break c close     This should be the code for a small prototype for the chatting app you wanted  Run both of them in separate terminals but then just check for the ports

[python] Sending string via socket (python)

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