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curl: add --parallel-immediate

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Starting with this change when doing parallel transfers, without this
option set, curl will prefer to create new transfers multiplexed on an
existing connection rather than creating a brand new one.

--parallel-immediate can be set to tell curl to prefer to use new
connections rather than to wait and try to multiplex.

libcurl-wise, this means that curl will set CURLOPT_PIPEWAIT by default
on parallel transfers.

Suggested-by: Tom van der Woerdt
Closes #4500
This commit is contained in:
Daniel Stenberg 2019-10-17 10:05:53 +02:00
parent 8487734e8b
commit 215baa74f7
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6 changed files with 22 additions and 1 deletions
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4
src/tool_operate.c
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@ -1976,6 +1976,10 @@ static CURLcode add_parallel_transfers(struct GlobalConfig *global,
if(result)
break;
/* parallel connect means that we don't set PIPEWAIT since pipewait
will make libcurl prefer multiplexing */
(void)curl_easy_setopt(per->curl, CURLOPT_PIPEWAIT,
global->parallel_connect ? 0L : 1L);
(void)curl_easy_setopt(per->curl, CURLOPT_PRIVATE, per);
(void)curl_easy_setopt(per->curl, CURLOPT_XFERINFOFUNCTION, xferinfo_cb);
(void)curl_easy_setopt(per->curl, CURLOPT_XFERINFODATA, per);