Fix gRPC trailers only response (#1209)

Signed-off-by: Sri Krishna Paritala <[email protected]>
connectrpc · Sep 4, 2024 · 8eee2fa · 8eee2fa
1 parent e1e5613
commit 8eee2fa
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/packages/connect/src/protocol-grpc/transport.ts b/packages/connect/src/protocol-grpc/transport.ts
@@ -147,6 +147,10 @@ export function createTransport(opt: CommonTransportOptions): Transport {
           );
           validateTrailer(uRes.trailer, uRes.header);
           if (message === undefined) {
+            // Trailers only response
+            if (headerError) {
+              throw headerError;
+            }
             throw new ConnectError(
               "protocol error: missing output message for unary method",
               uRes.trailer.has(headerGrpcStatus)