[GitHub] [arrow] kou commented on a diff in pull request #35376: GH-35375: [C++][FlightRPC] Add `arrow::flight::ServerCallContext::incoming_headers()`

["kou (via GitHub)" <gi...@apache.org>]

kou commented on code in PR #35376:
URL: https://github.com/apache/arrow/pull/35376#discussion_r1181441200


##########
cpp/src/arrow/flight/test_util.cc:
##########
@@ -474,12 +474,31 @@ class FlightTestServer : public FlightServerBase {
     return Status::OK();
   }
 
+  Status ListIncomingHeaders(const ServerCallContext& context, const Action& action,
+                             std::unique_ptr<ResultStream>* out) {
+    std::vector<Result> results;
+    auto prefix = static_cast<std::string_view>(*(action.body));

Review Comment:
   OK. How about `std::string_view prefix(*action.body)`?



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