Enable advanced Java interop tests.

Add response parameters to custom_metadata streaming request for Node and PHP
clients.

The Java server does not respond with separate initial and trailing
metadata when there is no response data - it is only emiting the
requested trailing metadata. Adding the response parameters to the test
(in accordance with the specification) avoids this, but I will open a
separate issue to investigate the Java behavior.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/node/interop/interop_client.js b/src/node/interop/interop_client.js
index 46ddecfb1f..75cfb41342 100644
--- a/src/node/interop/interop_client.js
+++ b/src/node/interop/interop_client.js
@@ -312,6 +312,9 @@ function customMetadata(client, done) {
     }
   };
   var streaming_arg = {
+    response_parameters: [
+     {size: 314159}
+    ],
     payload: {
       body: zeroBuffer(271828)
     }