Operation timeout in Lib\Gateway sendAndRecv method

https://github.com/walkor/GatewayWorker/blob/aefdc21fdf847331a5acbd7e4422cd26d44e5474/src/Lib/Gateway.php#L1157

Under a high load workers turn to a busy state after this exception in `sendAndRecv` method

`stream_socket_client(): unable to connect to tcp://127.0.0.1:2313 (Operation timed out) in GatewayWorker/Lib/Gateway.php on line 1157`

Linux kernel is optimized based on a manual.

I believe the problem is that the connection is closed every time and needs to be open on each new message, because of a `getSession` method call

I also noticed that some other calls of `stream_socket_client()` have STREAM_CLIENT_PERSISTENT flag, but this one does not.

Is it possible to have long-lasting connections here, since it would dramatically increase a performance? If not, how can we prevent this timeout errors?

Start at src/Lib/Gateway.php line 1157 in sendAndRecv, then inspect getSession and the other stream_socket_client calls that use STREAM_CLIENT_PERSISTENT. Reproduce the timeout under high load and determine whether connection persistence or timeout handling addresses the busy-worker behavior. Done means the timeout errors and resulting worker state are addressed without regressing message delivery.

Written by the indexing model from the issue text.