XMLRPC server and client modules in Python

PythonServer Side ProgrammingProgramming

We can create our own cross-platform, language-independent server using the XML-RPC protocol.We use the SimpleXMLRPCServer to create the SimpleXMLRPCServer instance and tell it to listen for incoming requests. Next we define some functions to be part of the service and register those functions so that the server knows how to call it.

Running the Server

In the below example we create a server using the SimpleXMLRPCServer instance and register some pre-defined as well as custom functions. Finally, we put the server into an infinite loop receiving and responding to requests.

Example

from xmlrpc.server import SimpleXMLRPCServer
from xmlrpc.server import SimpleXMLRPCRequestHandler
class RequestHandler(SimpleXMLRPCRequestHandler):
   rpc_paths = ('/RPC2',)
with SimpleXMLRPCServer(('localhost', 9000),
                        requestHandler=RequestHandler) as server:
   server.register_introspection_functions()
   # Register len() function;
   server.register_function(len)
   # Register a function under a different name
   @server.register_function(name='rmndr')
   def remainder_function(x, y):
      return x // y
   # Register a function under function.__name__.
   @server.register_function
   def modl(x, y):
      return x % y
   server.serve_forever()

Once the above server is started, it can be called by a client program which can refer to the functions and make the function calls.

Running the Client

Example

import xmlrpc.client
s = xmlrpc.client.ServerProxy('http://localhost:9000')
print(s.len("Tutorialspoint"))
print(s.rmndr(12,5))
print(s.modl(7,3))
# Print list of available methods
print(s.system.listMethods())

Output

Running the above code gives us the following result −

14
2
1
['len', 'modl', 'rmndr', 'system.listMethods', 'system.methodHelp', 'system.methodSignature']
raja
Published on 25-Jan-2021 12:20:54
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