[Twisted-Python] Defer until a server is ready?
Eric P. Mangold
eric at teratorn.org
Mon Oct 21 16:45:29 MDT 2013
On Mon, Oct 21, 2013 at 03:08:56PM -0700, Russell E. Owen wrote:
> For unit testing and other reasons I would like to launch a server in a
> subprocess, then wait until it is available before running some code
> that uses it. Is there a standard paradigm for this, e.g. poll until a
> connection is accepted, or have the server emit some kind of "ready"
> signal (such as a message to stdout or a UDP packet)? Any advice would
> be appreciated. A web search didn't turn up anything.
Emitting a message on stdout has worked well for me before.
You can wait for this in your ProcessProtocol then continue
the test case once you receieve it.
-E
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