Package org.apache.juneau.examples.mcp.secured

Class SecuredExampleClient

java.lang.Object

org.apache.juneau.examples.mcp.secured.SecuredExampleClient

public final class SecuredExampleClient
extends Object

A guided walkthrough of calling SecuredExampleMcpServer, showing the secured request/response cycle a newcomer to MCP OAuth 2.1 needs to see: a rejected unauthenticated call (twice — once at the raw wire level, once through the real McpClient SDK), the full RFC 9728 → RFC 8414 discovery chain, a successful read-only call, a scoped step-up rejection, and finally a successful write once a token carrying the write scope has been acquired.

Run main with three arguments — the secured server's endpoint and the demo client id/secret — all three of which SecuredExampleServer.main(String[]) prints on startup (they cannot be hardcoded here: the demo client secret is freshly randomly generated on every server run, by design; see OfflineAuthorizationServer). Unlike an earlier version of this walkthrough, the token endpoint is no longer a fourth argument (M10): this client discovers it itself, the same way a real client would.

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Runs the walkthrough against a running SecuredExampleServer.
static void	run(String endpoint, String clientId, String clientSecret)	Executes each numbered step of the walkthrough.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

main

public static void main(String[] args)
                 throws Exception

Runs the walkthrough against a running SecuredExampleServer.

Parameters:

args - Three required arguments: endpoint, client id, client secret — copy these from SecuredExampleServer.main(String[])'s startup banner.

Throws:

Exception - If any step fails unexpectedly (a REJECTED call is expected and handled, not thrown).

run

public static void run(String endpoint,
 String clientId,
 String clientSecret)
                throws Exception

Executes each numbered step of the walkthrough.

Parameters:

endpoint - The secured MCP server's endpoint URL.

clientId - The demo OAuth client id.

clientSecret - The demo OAuth client secret.

Throws:

Exception - If an unexpected (non-auth-related) failure occurs.