Merge branch 'main' into normalize-headers

Author: mattzcarey

src/client/streamableHttp.test.ts

@@ -209,7 +209,7 @@ describe('StreamableHTTPClientTransport', () => {
         const errorSpy = vi.fn();
         transport.onerror = errorSpy;
 
-        await expect(transport.send(message)).rejects.toThrow('Error POSTing to endpoint (HTTP 404)');
+        await expect(transport.send(message)).rejects.toThrow('Streamable HTTP error: Error POSTing to endpoint: Session not found');
         expect(errorSpy).toHaveBeenCalled();
     });
 

src/client/streamableHttp.ts

@@ -534,7 +534,7 @@ export class StreamableHTTPClientTransport implements Transport {
                     }
                 }
 
-                throw new Error(`Error POSTing to endpoint (HTTP ${response.status}): ${text}`);
+                throw new StreamableHTTPError(response.status, `Error POSTing to endpoint: ${text}`);
             }
 
             // Reset auth loop flag on successful response

src/server/auth/errors.ts

@@ -163,6 +163,14 @@ export class InsufficientScopeError extends OAuthError {
     static errorCode = 'insufficient_scope';
 }
 
+/**
+ * Invalid target error - The requested resource is invalid, missing, unknown, or malformed.
+ * (Custom error for resource indicators - RFC 8707)
+ */
+export class InvalidTargetError extends OAuthError {
+    static errorCode = 'invalid_target';
+}
+
 /**
  * A utility class for defining one-off error codes
  */
@@ -199,5 +207,6 @@ export const OAUTH_ERRORS = {
     [MethodNotAllowedError.errorCode]: MethodNotAllowedError,
     [TooManyRequestsError.errorCode]: TooManyRequestsError,
     [InvalidClientMetadataError.errorCode]: InvalidClientMetadataError,
-    [InsufficientScopeError.errorCode]: InsufficientScopeError
+    [InsufficientScopeError.errorCode]: InsufficientScopeError,
+    [InvalidTargetError.errorCode]: InvalidTargetError
 } as const;