Replace spdy with multiplex + echo example changes

[victorb]

Replaced spdy with multiplex for testing interop with go-libp2p.

Changed the dialer in the echo example to accept argument for who to dial.

js and go interop

Test of the interopability between js-libp2p and go-libp2p

Fixes pending

• Enable multiplex in go-libp2p-swarm
  • Add multiplex transport libp2p/go-libp2p-swarm#16

How to test

have projects ipfs/js-libp2p-ipfs-nodejs and libp2p/go-libp2p
cloned locally.

In libp2p/go-libp2p:

➜  go-libp2p git:(master) ls
CONTRIBUTE.md Makefile      TODO          p2p           roadmap.md
LICENSE       README.md     examples      package.json
➜  go-libp2p git:(master) cd examples/echo
➜  echo git:(master) ls
README.md main.go
➜  echo git:(master) go run main.go -l 4444
12:08:10.764 WARNI     swarm2: Listener not given PrivateKey, so WILL NOT SECURE conns. swarm_listen.go:83
2017/01/24 12:08:10 I am /ip4/127.0.0.1/tcp/4444/ipfs/QmPbpcZzM2Ac47uA2oebSaDPVbSccGtRFf8rbF4dpNHteN
2017/01/24 12:08:10 listening for connections

Copy address from "I am", which in this case is /ip4/127.0.0.1/tcp/4444/ipfs/QmPbpcZzM2Ac47uA2oebSaDPVbSccGtRFf8rbF4dpNHteN

In ipfs/js-libp2p-ipfs-nodejs:

➜  echo git:(master) ✗ node dialer.js /ip4/127.0.0.1/tcp/4444/ipfs/QmU9jbSMad771NY4YC6fWV9VQxcaB8Q4b6F8WmfXnLSTEe
Dialer ready, listening on:
/ip4/127.0.0.1/tcp/4444/ipfs/QmU9jbSMad771NY4YC6fWV9VQxcaB8Q4b6F8WmfXnLSTEe/ipfs/QmcrQZ6RJdpYuGvZqD5QEHAv6qX4BrQLJLQPQUrTrzdcgm
nodeA dialed to nodeB on protocol: /echo/1.0.0
received data: hey

And in the output of libp2p/go-libp2p, you'll see:

12:09:37.492 WARNI       conn: listener %s listening INSECURELY! <Listener <peer.ID U9jbSM> /ip4/127.0.0.1/tcp/4444> listen.go:108
2017/01/24 12:09:37 Got a new stream!
2017/01/24 12:09:37 read request: "hey"

So everything was working in the interop tests!

However

This branch fails with two test failures:

  1) libp2p-ipfs-nodejs libp2p.hangupByMultiaddr nodeA to nodeB:
     Uncaught AssertionError: expected [ Array(1) ] to have a length of 0 but got 1
      at parallel (test/libp2p.spec.js:267:65)
      at node_modules/async/internal/parallel.js:27:9
      at eachOfArrayLike (node_modules/async/eachOf.js:57:9)
      at exports.default (node_modules/async/eachOf.js:9:5)
      at _parallel (node_modules/async/internal/parallel.js:26:5)
      at parallelLimit (node_modules/async/parallel.js:85:26)
      at Timeout.check [as _onTimeout] (test/libp2p.spec.js:262:9)

  2) libp2p-ipfs-nodejs libp2p.hangupByPeerInfo nodeA to nodeB:
     TypeError: "listener" argument must be a function
      at MultiplexMuxer.end (node_modules/libp2p-multiplex/src/muxer.js:57:20)
      at Swarm.hangUp (node_modules/libp2p-swarm/src/index.js:117:13)
      at Node.hangUpByPeerInfo (node_modules/libp2p/src/index.js:259:16)
at Context.it (test/libp2p.spec.js:340:11)

[daviddias]

?

[daviddias]

drain, no?

[victorb]

Yup! Thanks, fixed!

[daviddias]

Something is missing here, it should have the /ipfs/Qmhash

[victorb]

It's a leftover from how it was before. Example seems to work anyways. You want me to add it though, since the ID in our echo example is always the same anyways?

[daviddias]

try both

[victorb]

??? Tried without, and it's working

[daviddias]

Now latest js-libp2p-ipfs-nodejs can use both muxer, let's continue tracking this bug here: https://github.com/ipfs/js-libp2p-ipfs-nodejs/issues/59