asyncio: wrapping a subprocess in a server

From	David Farler <accumulator@icloud.com>
Subject	asyncio: wrapping a subprocess in a server
Date	2014-06-25 11:24 -0700
Newsgroups	comp.lang.python
Message-ID	<mailman.11239.1403721083.18130.python-list@python.org> (permalink)

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Hi all,

I'm trying to vend some kind of server that spawns a client-unique subprocess when a client connects. The server acts as a middleman, receiving structure messages from the client, sending input to the subprocess, and packaging up subprocess data before sending back to the client. The connection is long-lived and the client can continue to send "requests". If the subprocess crashes or dies, the server should be able to revive it transparently.

I know how to separately create server and subprocess protocols and having the event loop run either until completion, but what is the best way to chain two protocols together?

|| Client || <~~ TCP ~~> || Server <--> Subprocess ||

Regards,
David

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asyncio: wrapping a subprocess in a server David Farler <accumulator@icloud.com> - 2014-06-25 11:24 -0700

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