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--- tanszek:oktatas:iss_t:xml-rpc [2023/03/19 14:34] – knehez
+++ tanszek:oktatas:iss_t:xml-rpc [2026/03/16 09:32] (current) – [Server] knehez
@@ Line 1: / Line 1: @@
-===== XML-RPC =====
+===== XML-RPC tutorial =====
+[[https://www.tutorialspoint.com/xml-rpc/xml_rpc_intro.htm|Introduction to XML-RPC]]
+===== Server in Python =====
+<sxh python>
+from xmlrpc.server import SimpleXMLRPCServer
+from xmlrpc.server import SimpleXMLRPCRequestHandler
+# Restrict to a particular path.
+class RequestHandler(SimpleXMLRPCRequestHandler):
+    rpc_paths = ('/RPC2',)
+# Create server
+with SimpleXMLRPCServer(('localhost', 8000),
+                        requestHandler=RequestHandler) as server:
+    server.register_introspection_functions()
+    # Register pow() function; this will use the value of
+    # pow.__name__ as the name, which is just 'pow'.
+    server.register_function(pow)
+    # Register a function under a different name
+    def adder_function(x, y):
+        return x + y
+    server.register_function(adder_function, 'add')
+    # Register an instance; all the methods of the instance are
+    # published as XML-RPC methods (in this case, just 'mul').
+    class MyFuncs:
+        def mul(self, x, y):
+            return x * y
+    server.register_instance(MyFuncs())
+    # Run the server's main loop
+    server.serve_forever()
+</sxh>
+===== Client - in Python=====
+<sxh python>
+import xmlrpc.client
+s = xmlrpc.client.ServerProxy('http://localhost:8000')
+print(s.pow(2,3))  # Returns 2**3 = 8
+print(s.add(2,3))  # Returns 5
+print(s.mul(5,2))  # Returns 5*2 = 10
+# Print list of available methods
+print(s.system.listMethods())
+</sxh>
+----
+==== Task: XML-RPC – Remote Task Manager ====
+The goal of this exercise is to understand how **Remote Procedure Calls (RPC)** work in a client–server architecture using the XML-RPC protocol. Implement a simple **task management system** consisting of a Python **XML-RPC server** and a Python **client application**.
+==== Server ====
+Create an XML-RPC server in Python that manages a list of tasks. Each task should contain the following fields:
+  * **id** – unique integer identifier
+  * **title** – short text describing the task
+  * **completed** – boolean value indicating whether the task is finished
+The server must provide the following remote methods:
+^ Method ^ Description ^
+| add_task(title) | Creates a new task and returns the generated task ID |
+| list_tasks() | Returns all tasks as a list of dictionaries |
+| complete_task(task_id) | Marks the specified task as completed |
+| delete_task(task_id) | Removes the specified task |
+| get_task(task_id) | Returns the details of a single task |
+| get_task_by_title(title) | Returns the details of a single task (by title string) |
+The server should store tasks **in memory** while it is running.
+==== Client ====
+Write a Python client that connects to the XML-RPC server and allows the user to interact with the task manager. The client program should:
+  * connect to the XML-RPC server
+  * call the remote methods
+  * display results in a readable format
+The client should provide a simple **command line menu**, for example:
+<code python>
+- Add task
+- List tasks
+- Complete task
+- Delete task
+- Show task details by id
+- Show task details by title
+- Exit
+</code>
-XML-RPC is a popular integration method used in web development, especially in the context of web services. It enables developers to create web services that can be accessed by other applications and platforms using simple HTTP requests.
-XML-RPC is a widely adopted integration method because it is platform-independent and can be used with any programming language that supports HTTP and XML. It is also a lightweight protocol that uses a small amount of bandwidth and can be easily implemented on both the client and server sides.
-[[https://www.tutorialspoint.com/xml-rpc/xml_rpc_intro.htm|Introduction to XML-RPC]]