MacOS networking behavior

[gtema]

An axum application that uses openstack_sdk may face networking issues under MacOS when a single request handler sends multiple requests to the same server.
So far I have seen this during development when keystone is running under uwsgi on localhost and the app runs also on the localhost and send multiple requests. Tuning timeouts, enabling keepalive doesn't seem to make any influence. The only thing so far that helped was setting .pool_max_idle_per_host(0) on the client. However it feels that some general networking configuration is responsible for that.
On Linux this issue is not reproducible.

When occured openstack_sdk returns openstack_sdk::api::error::ApiError::Client (client error: communication with openstack: error sending request for url, https://github.com/gtema/openstack/blob/main/openstack_sdk/src/api/error.rs#L51) error

Reference:

• Error: IncompleteMessage: connection closed before message completed hyperium/hyper#2136
• Too many IncompleteMessage Error seanmonstar/reqwest#2021