[GitHub] [arrow] romankarlstetter commented on a diff in pull request #37674: GH-37673: [C++][FlightRPC] Improve error message if binding port fails

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

romankarlstetter commented on code in PR #37674:
URL: https://github.com/apache/arrow/pull/37674#discussion_r1324034444


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cpp/src/arrow/flight/transport/grpc/grpc_server.cc:
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@@ -616,6 +616,10 @@ class GrpcServerTransport : public internal::ServerTransport {
 
     grpc_server_ = builder.BuildAndStart();
     if (!grpc_server_) {
+      if (port == 0) {
+        return Status::Invalid("Server did not start properly. Unable to bind to port ",

Review Comment:
   `IOError` is also fine for me



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