[Tobu]

Nothing in the web platform lets you use raw (or TCP/UDP/etc) sockets. At most you could do VPN-style networking and use a bridge to talk to the rest of the internet; that bridge needs someone to host it.

[chii]

damn. at least i found http://www.w3.org/TR/webrtc/#peer-to-peer-data-api which looks like its a standard to allow for peer to peer data transfer.