Make everything more 'streamy'

[daviddias]

multistream-select and libp2p-spdy can get a lot simpler (and nicer!) once spdy-transport starts returning a duplex stream, so that we have:

from the dialer end

var isListener = false
var ms = new MultiStream('/ipfs/protocol/1.0.0')
var spdy = new SpdyMuxer(isListener)

// internally there is a multistream handshake to upgrade this transport to spdy muxing
transport.pipe(spdy).pipe(transport)

someDuplex
  .pipe(ms)                  // to handshake the protocol we want to speak through the muxed stream
  .pipe(spdy.createStream()) // mux a new stream
  .pipe(ms)                  // confirm the handshake 
  .pipe(someDuplex)

and from listener end

var isListener = true
var ms = new MultiStream('/ipfs/protocol/1.0.0', function handler(stream) {
  // your handler code for this protocol
}) 
// we can have more than one handler on a MultiStream simply by calling ms.addHandler(protocol, handlerFunc)

var spdy = new SpdyMuxer(isListener)

// we get the multistream handshake into spdy internally
transport.pipe(spdy).pipe(transport)

spdy.on('stream', function (stream) {
  // this would start the multistream handshake on this stream
  stream.pipe(ms).pipe(stream)
})

[daviddias]

@mafintosh would you mind reviewing the idea above? Want to make sure that I'm not missing anything with all this streaming goodness.

It will make swarm and the whole idea of upgrading connections through multistream handshakes so much simple

Thank you :)

[daviddias]

(until then, I'll have to work it out with a less elegant solution)