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CURLOPT_CONNECT_ONLY.md: an easy handle with this option set cannot be reused

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Closes #16002
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Daniel Stenberg 2025-01-14 14:53:42 +01:00
parent 308437ac53
commit 2f8ecd5dbd
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1 changed files with 8 additions and 5 deletions
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13
docs/libcurl/opts/CURLOPT_CONNECT_ONLY.md
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@ -34,8 +34,8 @@ and then return.
The option can be used to simply test a connection to a server, but is more
useful when used with the CURLINFO_ACTIVESOCKET(3) option to
curl_easy_getinfo(3) as the library can set up the connection and then
the application can obtain the most recently used socket for special data
curl_easy_getinfo(3) as the library can set up the connection and then the
application can obtain the most recently used socket for special data
transfers.
Since 7.86.0, this option can be set to '2' and if HTTP or WebSocket are used,
@ -43,13 +43,16 @@ libcurl performs the request and reads all response headers before handing
over control to the application.
Transfers marked connect only do not reuse any existing connections and
connections marked connect only are not allowed to get reused.
connections marked connect only are not allowed to get reused. For this
reason, an easy handle cannot be reused for a second transfer when
CURLOPT_CONNECT_ONLY(3) is set, it must be closed with curl_easy_cleanup(3)
once the application is done with it.
If the connect only transfer is done using the multi interface, the particular
easy handle must remain added to the multi handle for as long as the
application wants to use it. Once it has been removed with
curl_multi_remove_handle(3), curl_easy_send(3) and
curl_easy_recv(3) do not function.
curl_multi_remove_handle(3), curl_easy_send(3) and curl_easy_recv(3) do not
function.
# DEFAULT