Send binary file with WAMP

[Travis Painter]

I want to send a binary file using WAMP. Per this stackoverflow question [does-autobahnjs-support-binary-messages], it appears that it might be possible in WAMPv2. Is there a convenient way to do this? The file would be sent from python to JS.

I am currently doing this by base64 encoding the file, sending, and then decoding on the client-side. At the time I first I tried to directly send the binary file, I had an error that it wasn't able to be json encoded. This made me move on with the base64 method.

Do I need to invoke 'msgpack' in an option somewhere?

Thanks - Travis 

[Tobias Oberstein]

Hi Travis,

Am 18.08.2014 04:41, schrieb Travis Painter:
> I want to send a binary file using WAMP. Per this stackoverflow question
> [does-autobahnjs-support-binary-messages]

> <[http://stackoverflow.com/questions/17643777/does-autobahnjs-support-binary-messages]>,

> it appears that it might be possible in WAMPv2. Is there a convenient
> way to do this? The file would be sent from python to JS.

Yes, WAMP2 supports MsgPack as serialization format, which is able to
transport binary data without base64 (or other) encoding.

AutobahnPython has full support for MsgPack. AutobahnJS not yet (it's on
the "todo" list)

But

https://github.com/KSDaemon/wampy.js

supports both JSON and MsgPack.

>
> I am currently doing this by base64 encoding the file, sending, and then
> decoding on the client-side. At the time I first I tried to directly
> send the binary file, I had an error that it wasn't able to be json
> encoded. This made me move on with the base64 method.
>
> Do I need to invoke 'msgpack' in an option somewhere?

wampy can talk WAMP-over-WebSocket with MsgPack with AutobahnPython.

I guess there is an option to make wampy announce MsgPack when
connecting. You might ask Konstantin -- wampy developer and a very nice
and helpful guy ..

Cheers,
/Tobias

>
> Thanks - Travis
>
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