Re: [9fans] Using webfs from rc

[erik quanstrom <quanstro@quanstro.net>]

> that has something to do with the way how you open the connection.
>
> I'm not 100% sure if its a perfect description what happens, but when you
>
> > % echo -n url http://www.google.co.uk > ctl
>
> the >ctl will open and close the connection to 0/ctl. But you can read the body only while the 0/ctl device is open. (Or it might be differnet that you need to open body for reading before you open and send to ctl).
>
> Best is to check the code of hget to understand how this works.
>
> I'm not sure if it's possible or in any way convenient to use webfs through rc. I think hget is your friend.

9p file servers know which "connection" (fid) they're talking to.
echo fu>bar; cat bar creates two unrelated fids.
for a file server that considers each fid a unique transaction,
the user needs to arrange for the same file to be used for the
request and response.

this can be done in rc with the <>{cmd} idiom.  see rc(1).
it can be a little confusing.

- erik