transport: better error message when per-RPC creds fail (#5033)

menghanl · easwars · commit 296afc2e579c · 2021-12-14T11:38:41.000-08:00
diff --git a/internal/transport/http2_client.go b/internal/transport/http2_client.go
@@ -588,7 +588,7 @@ func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[s
 				return nil, err
 			}
 
-			return nil, status.Errorf(codes.Unauthenticated, "transport: %v", err)
+			return nil, status.Errorf(codes.Unauthenticated, "transport: per-RPC creds failed due to error: %v", err)
 		}
 		for k, v := range data {
 			// Capital header names are illegal in HTTP/2.

Original file line number	Diff line number	Diff line change
`@@ -588,7 +588,7 @@ func (t *http2Client) getTrAuthData(ctx context.Context, audience string) (map[s`
`588`	`588`	`return nil, err`
`589`	`589`	`}`
`590`	`590`
`591`		`- return nil, status.Errorf(codes.Unauthenticated, "transport: %v", err)`
	`591`	`+ return nil, status.Errorf(codes.Unauthenticated, "transport: per-RPC creds failed due to error: %v", err)`
`592`	`592`	`}`
`593`	`593`	`for k, v := range data {`
`594`	`594`	`// Capital header names are illegal in HTTP/2.`