Question

I have just started learning python and i was wondering how i would get the client to execute a function on the server and get some response

Here is my server code

import socket

serversocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
serversocket.bind(('localhost', 8089)) 
serversocket.listen(5)

while True:
    connection, address = serversocket.accept()
    buf = connection.recv(64)
    if len(buf)> 0:
        print(buf)
        break

input('press enter')

This is the client code

import socket

clientsocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
clientsocket.connect(('localhost', 8089)) 
data = 'lorem ipsum'
clientsocket.send(data.encode())
input('press enter')

and this is the function

def addme(x,y):
    return x + y

print (addme(6,4))

Supposing i have the function addme() on the server,would it be possible to call it from the client and the response displayed to the client?.

Answer 1

If you simply want to call functions you should check out XMLRPC. Simple and easy, here’s the example from the python documentation.

# Server code
import xmlrpclib
from SimpleXMLRPCServer import SimpleXMLRPCServer

def is_even(n):
    return n%2 == 0

server = SimpleXMLRPCServer(("localhost", 8000))
print "Listening on port 8000..."
server.register_function(is_even, "is_even")
server.serve_forever()


# Client code
import xmlrpclib

proxy = xmlrpclib.ServerProxy("http://localhost:8000/")
print "3 is even: %s" % str(proxy.is_even(3))
print "100 is even: %s" % str(proxy.is_even(100))