[BUG] - Resources are not properly refcounted

[bSchnepp]

Issue Checklist

• A related or similar issue is not already marked as open
• The steps to reproduce have been tested, and do produce the issue described
• If relevant, graphical issues have a screenshot presented as well. Text-only issues have the text and it's correct version listed within a Markdown code block section
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Bug Description
A process can quickly exhaust all available resources on a handle, effectively doing a denial of service on any other user of that resource backed by that handle.

To Reproduce
Please list the steps to produce the bug below:

1. Write an initial process which opens a named port
2. Constantly try to re-open it
3. Eventually, resources on it will be exhausted

Screenshots
If relevant, please provide screenshots here.

Expected behavior
A handle can't be overloaded

Additional information
Any additional information should be placed here.

[bSchnepp]

A simple fix for this would be to simply re-open the same handle, if already open, instead of allocating new ones.

[bSchnepp]

The problem that currently appears to happen is that a client can open up a bunch of ClientConnections and close them, but it is possible that the corresponding ServerConnection never closes, and thus any Connection can no longer be made. Since no server currently polls it's own connections to check for validity, these don't close as expected.