search 9fans archives for 9P streaming. i think nemo and lsub crew had experimented with some variation i believe. i'm not sure if it is brought into Clive, their new effort.
On Wed, Oct 15, 2014 at 8:56 AM, <smi...@icebubble.org> wrote: > Hello, > > I'm wondering if there is any way to do server push using the 9P > protocol. I'm trying to imagine use of 9P for applications such as data > acquisition. One example might be caputing MIDI messages from digital > musical instruments. > > As I understand the protocol, if an instrument served MIDI over 9P, > every MIDI message would have to be explicitly requested with a Tread. > And the instrument would have to wait for a Tread in order to send data. > If the instrument (server) sent more than one Rread with the same tag, > that would be a violation of the protocol. > > It might be possible to reverse roles: for the instrument to act as a 9P > client and treat the MIDI host as a 9P server. In that case, each MIDI > message could take the form of a Twrite to the MIDI host. But that > would generate a series of Rwrites back from the host to the instrument, > which would be unnecessary and have to be ignored. > > Another example might be isochronous data streams, such as video > captured at a fixed framerate from a video capture device. Having to > send the same Tread or Rread 30x/second seems silly. > > So, is there any way use 9P in a server-push mode, where the server > spits out a stream of data to be captured? > > Thanks! > >
