问题
This is sort of a theoretical question, however, I need to add file sharing capabilities to my web socket powered chat application. I could use a service like Amazon S3 to upload a file to share by posting a link to the file, but that involves the uploading of a file that may already be accessible over the local network (sharing a file between co-workers for example).
So I had the idea that it might be possible to somehow tunnel the upload/download/transfer through the already existing web socket connection. However, I don't know enough about HTTP file transfer to know the next step of how to implement it. Is there a limitation to web sockets that would prevent this from being possible?
I'm using Ruby and EventMachine for my current web socket implementation. If you were able to provide a high level overview to get me started, that would be very much appreciated.
回答1:
To allow files to be shared without the need to upload it to the server, (i.e Coworkers) you can now use the WebRTC DataChannel API, to create a peer to peer connection.
回答2:
Here's an example of a project that uses only Web Sockets and the javascript File API for transferring files: http://www.github.com/thirtysixthspan/waterunderice
来源：https://stackoverflow.com/questions/9286848/peer-to-peer-file-sharing-with-web-sockets