On 25/10/2024 19:18, Dmitry Karpov via curl-library wrote:
You don't really need to set CURLMOPT_MAX_TOTAL_CONNECTIONS = 1 to use HTTP2
multiplexing.
You basically need to do the following steps:
1. Enable HTTP multiplexing by setting CURLMOPT_PIPELINING option on a
multi-handle with CURLPIPE_MULTIPLEX flag.
2. Set CURLOPT_PIPEWAIT option to 1 on easy handle for each transfer you add
to that multi-handle.
The last setting will force the transfer to wait until the HTTP2 pipeline is
ready and not try to open a new connection.
Ok, fair. What I was doing did feel like a cludge.
I was confused by the docs on CURLMOPT_MAX_PIPELINE_LENGTH which say
"removed in 7.62.0"
But yes.
curl_multi_setopt(curl_multi_handle, CURLMOPT_PIPELINING,
CURLPIPE_MULTIPLEX); // this is the default anyway
Plus
curl_easy_setopt(handle, CURLOPT_PIPEWAIT, 1L);
certainly works to enable / force the high performance HTTP2 mode, and
is much cleaner and clearer.
Thanks!
Oliver
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