fix(http1): http1 server graceful shutdown fix #3261
Merged
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This is from #3233, I've fixed up the failing test.
fix issue in the graceful shutdown logic
which causes the connection future to hang
when graceful shutdown is called prior to any
requests being made. This fix checks to see
if the connection is still in its initial state
when disable_keep_alive is called, and starts the
shutdown process if it is.
Closes #2730