make spec compliant

[Stebalien]

See: libp2p/mplex#3

(massive thanks to @dyajov for finding this)

[dryajov]

getting and error trying to run the interop test:

[Stebalien]

Hm. I can't reproduce. Here's my package-lock.json: /ipfs/QmayQwaBCXygmEdiRkqUbd5K9NXrDFxjm6vWd4oybvew1R

Are you using your changed version or the current one on npm? Also, check git status uncommitted changes.

[dryajov]

So I was able to figure out my env issue and everything runs now. One small thing I ran into with the interop tests, the toPull needs to be toPull.duplex(stream) for duplex streams - it works now, because internally libp2p-mplex will convert it back to a node stream, but broke with the new pull-mplex implementation.

diff --git a/interop/js/server.js b/interop/js/server.js
index f69a770..38e36f9 100644
--- a/interop/js/server.js
+++ b/interop/js/server.js
@@ -31,7 +31,7 @@ function readWrite (stream) {
 }

 const listener = tcp.createServer((socket) => {
-  let muxer = mplex.listener(toPull(socket))
+  let muxer = mplex.listener(toPull.duplex(socket))
   muxer.on('stream', (stream) => {
     readWrite(stream)
   })