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--- tanszek:oktatas:iss_t:json-rpc [2026/03/01 17:08] – [JSON-RPC Server (Python + Flask)] knehez
+++ tanszek:oktatas:iss_t:json-rpc [2026/03/01 17:27] (current) – [JSON-RPC Client (Python)] knehez
@@ Line 24: / Line 24: @@
 A JSON-RPC request is a JSON object with the following fields:
-jsonrpc – must be "2.0"
+  * **jsonrpc** – must be "2.0"
+  * **method** – name of the remote method
-method – name of the remote method
+  * **params** – parameters (optional)
+  * **id** – request identifier (used to match response)
-params – parameters (optional)
-id – request identifier (used to match response)
 Example request:
@@ Line 81: / Line 78: @@
 from flask import Flask, request, jsonify
-app = Flask(name)
+app = Flask(__name__)
 # available RPC methods
 def add(a, b):
-return a + b
+    return a + b
 def subtract(a, b):
-return a - b
+    return a - b
 methods = {
-"add": add,
+    "add": add,
-"subtract": subtract
+    "subtract": subtract,
 }
 @app.route("/rpc", methods=["POST"])
 def rpc():
-data = request.get_json()
+    data = request.get_json()
+    if data.get("jsonrpc") != "2.0":
+        return jsonify(
+            {
+                "jsonrpc": "2.0",
+                "error": {"code": -32600, "message": "Invalid Request"},
+                "id": data.get("id"),
+            }
+        )
+    method_name = data.get("method")
+    params = data.get("params", [])
+    request_id = data.get("id")
-if data.get("jsonrpc") != "2.0":
+    if method_name not in methods:
-    return jsonify({
+        return jsonify(
-        "jsonrpc": "2.0",
+            {
-        "error": {"code": -32600, "message": "Invalid Request"},
+                "jsonrpc": "2.0",
-        "id": data.get("id")
+                "error": {"code": -32601, "message": "Method not found"},
-    })
+                "id": request_id,
+            }
+        )
-method_name = data.get("method")
+    try:
-params = data.get("params", [])
+        result = methods[method_name](*params)
-request_id = data.get("id")
+        return jsonify(
+            {
+                "jsonrpc": "2.0",
+                "result": result,
+                "id": request_id,
+            }
+        )
+    except Exception as e:
+        return jsonify(
+            {
+                "jsonrpc": "2.0",
+                "error": {"code": -32603, "message": str(e)},
+                "id": request_id,
+            }
+        )
-if method_name not in methods:
-    return jsonify({
-        "jsonrpc": "2.0",
-        "error": {"code": -32601, "message": "Method not found"},
-        "id": request_id
-    })
-try:
+if __name__ == "__main__":
-    result = methods[method_name](*params)
+    app.run(port=5000)
-    return jsonify({
-        "jsonrpc": "2.0",
-        "result": result,
-        "id": request_id
-    })
-except Exception as e:
-    return jsonify({
-        "jsonrpc": "2.0",
-        "error": {"code": -32603, "message": str(e)},
-        "id": request_id
-    })
-if name == "main":
-app.run(port=5000)
 </sxh>
@@ Line 147: / Line 157: @@
 import requests import json
-url = "http://localhost:5000/rpc
+url = "http://localhost:5000/rpc"
-"
 payload = {
-"jsonrpc": "2.0",
+  "jsonrpc": "2.0",
-"method": "add",
+  "method": "add",
-"params": [10, 15],
+  "params": [10, 15],
-"id": 1
+  "id": 1
 }