fix: Send a valid ping request instead of empty object

Author: clareliguori

e2e_tests/python/server_clients/automated_oauth.py

@@ -371,7 +371,10 @@ async def _discover_scope_and_auth_server(self, server_url: str) -> tuple[str, s
         async with httpx.AsyncClient() as client:
             headers = {MCP_PROTOCOL_VERSION: LATEST_PROTOCOL_VERSION}
             response = await client.post(
-                server_url, headers=headers, follow_redirects=True, json={}
+                server_url,
+                headers=headers,
+                follow_redirects=True,
+                json={"jsonrpc": "2.0", "method": "ping", "id": 1},
             )
 
             if response.status_code != 401:

e2e_tests/typescript/src/server_clients/automated_oauth.ts

@@ -466,7 +466,7 @@ export class AutomatedOAuthClient extends Server {
       headers: {
         "Content-Type": "application/json",
       },
-      body: JSON.stringify({}),
+      body: JSON.stringify({ jsonrpc: "2.0", method: "ping", id: 1 }),
     });
     const resourceMetadataUrl = extractResourceMetadataUrl(response);