From 5e054bf11e58049d988746cb76238f8099ac1faa Mon Sep 17 00:00:00 2001
From: ncteisen <ncteisen@gmail.com>
Date: Tue, 4 Sep 2018 13:01:34 -0700
Subject: [PATCH] Stop unconditionally surfacing user agent to server

---
 src/core/ext/filters/http/server/http_server_filter.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/core/ext/filters/http/server/http_server_filter.cc b/src/core/ext/filters/http/server/http_server_filter.cc
index 926afeec84f..a238d5f989f 100644
--- a/src/core/ext/filters/http/server/http_server_filter.cc
+++ b/src/core/ext/filters/http/server/http_server_filter.cc
@@ -262,6 +262,10 @@ static grpc_error* hs_filter_incoming_metadata(grpc_call_element* elem,
             GRPC_ERROR_STR_KEY, grpc_slice_from_static_string(":authority")));
   }
 
+  if (b->idx.named.user_agent != nullptr) {
+    grpc_metadata_batch_remove(b, b->idx.named.user_agent);
+  }
+
   return error;
 }