race condition in ProxyServer.Start()

[jgilbert2017]

            foreach (var endPoint in ProxyEndPoints)
            {
                Listen(endPoint);
            }

            CertificateManager.ClearIdleCertificates();

            if (RunTime.IsWindows && !RunTime.IsRunningOnMono)
            {
                WinAuthEndPoint.ClearIdleStates(2);
            }

should probably change to doing the Listen call last especially b/c there is a Task.Delay loop in the Clear*() functions.

            CertificateManager.ClearIdleCertificates();

            if (RunTime.IsWindows && !RunTime.IsRunningOnMono)
            {
                WinAuthEndPoint.ClearIdleStates(2);
            }

            foreach (var endPoint in ProxyEndPoints)
            {
                Listen(endPoint);
            }

[honfika]

@jgilbert2017 BTW, you can come to our gitter
And create pull requests for the issues you submitted:)

[jgilbert2017]

@honfika what is/where is your gitter? I can do pull requests, just wanted to make sure you'd be receptive. I may take a stab at some major work with the networking streams but I noticed you're working on it on the dev branch. The current buffering is highly inefficient. Should I hold off?

[honfika]

gitter: https://gitter.im/Titanium-Web-Proxy/Lobby

I was working on the streams recently, but i finished that. So you can check it:)
Currently I'm working on HTTP/2 support

[honfika]

Fixed, but the ClearIdleStates was removed because of the RequestId issue.
The WinAuth state is stored in an internal data property of the websession object, so the cleaner thead is not required anymore.

[justcoding121]

Please reopen if any issue arise.