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Re: Support HTTP2 Goaway Frame callback for curl multi
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From: Ray Satiro via curl-library <curl-library_at_lists.haxx.se>
Date: Thu, 11 Jan 2024 02:10:26 -0500
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
Date: Thu, 11 Jan 2024 02:10:26 -0500
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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