On 1/11/2024 1:13 AM, Cao Duc Quan wrote:
If I grasp your point correctly, the statement "*curl may not process a GOAWAY immediately*" implies that there might be a delay in some of cURL's internal logic until a user initiates a request. However, I believe that my proposal will ensure the callback is triggered promptly whenever nghttp2 receives a GOAWAY frame, as it will be invoked within the nghttp2_session_callbacks_set_on_frame_recv_callback() chain, possibly passing through the layers of socket -> ssl -> nghttp2.
nghttp2 won't receive the frame until curl reads that connection. As I explained there's no connection upkeep except for curl_easy_upkeep which only sends a PING. I have proposed allowing curl_easy_upkeep to be called on easy handles with shared connection caches. [1]
[1]: https://github.com/curl/curl/pull/12677
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