Share interface : Connection pool sharing between threads

[MatouCode]

Hello,

I saw the video "mastering libcurl", in which it says on the share interface that it cannot reuse the connection cache between multiple threads, and that this is a known bug.

As I don't see it in the libcurl's "Known Bugs" page, and I don't see anything about it in the changelog since 8.4.0, I was wondering if the bug had been fixed or if the feature had been removed. This is not clear to me because the share interface overview still mentions the connection cache reuse.

Thanks,

[bagder]

1

In the manpage for CURLSHOPT_SHARE, where CURL_LOCK_DATA_CONNECT is documented, it says:

It is not supported to share connections between multiple concurrent threads.

2

In the TODO file, item "1.4" under Better and more sharing it says:

The share interface offers CURL_LOCK_DATA_CONNECT to have multiple easy
handle share a connection cache, but due to how connections are used they are
still not thread-safe when used shared.

See #4915 and lib1541.c