feat: add connection pooling and idle timeout

[peterdeme]

• Add connection pooling and set an idle timeout

[peterdeme]

Okay, so my test was the following. I made a webserver which prints the socket id:

require 'webrick'

server = WEBrick::HTTPServer.new Port: 4567
server.mount_proc '/' do |req, res|
  puts "Socket: #{req.peeraddr[1]}"
  res.body = "peerport=#{req.peeraddr[1]}"
end 
server.start

Then I start off the tests:

$ export STREAM_CHAT_URL=http://localhost:4567
$ bundle exec rake test

Then checked the output:

☝️ As it's visible in the screenshot, the TCP sockets were re-used during the test.

If we do a test without the persistent adapter, it looks like this: 👇

[ferhatelmas]

LGTM

[ferhatelmas]

let's port these fixes to feed SDKs similarly, it will increase performance considerably