grpc-js client hangs when server sends metadata > 64KB

[alexandervain]

Problem description

When a server responds with headers/trailers exceeding ~64KB, the client hangs (callback is not triggered).

Reproduction steps

• Start a server that adds > 64KB to response headers/trailers.
• Create a client for that service and call it
• --> Client hangs

Here is a test demonstrating the issue

Environment

• OS name, version and architecture: macOS Monterey 12.5.1, Apple M1 Max
• Node version: 16.17.0
• Node installation method: yarn
• Package name and version: @grpc/[email protected]

Additional context

The issue seems to be related to this on - https://github.com/grpc/grpc-node/issues/1533, though with a bit different setup. That issue had the provided reproduction - those tests pass now(with updated Node/@grpc/grpc-js versions). I forked the reproduction repo to update the tests setup:

• new test demonstrates client hanging when server send trailer of ~65KB size.
• lower level Node's HTTP2 test reproduces similar behavior - it hangs (no client-side events fired) on metadata that is > 64KB.
  • when metadata exceeding the maxSendHeaderBlockLength setting, server throws frameError (demonstrated in this test) - but since this change applying maxSendHeaderBlockLength: Number.MAX_SAFE_INTEGER that's not the case with @grpc/grpc-js anymore

[murgatroid99]

If this happens with Node's http2 module without any involvement of gRPC, then it seems like the issue is more suited to the Node repository than to this one.