is it possible to use google channel api without using rest of app engine
for example if i have a remotely hosted site, can I use google's new channel api? http://code.google.com/appengine/docs/python/channel/
If I have a site elsewhere, and I want to get google to create new channels, send data, etc, without being hosted on GAE, or do I have to be hosted on GAE?
If it's possible, please point me in the right direction.
A clever engineer could write a service in App Engine that exposes the two Channel API methods as RESTful methods.
Services not written in App Engine that wanted to use this service could, instead of calling the Channel API directly, proxy those calls via REST to the above service.
Security, privacy, throttling, abuse detection, etc. are left as an exercise for the reader.
No. The Channel API communicates with Google infrastructure to do its magic. There are plenty of non-Google alternatives, though - just do a search for 'comet'.