added WebSocket transport support

Signed-off-by: GautamBytes <manchandanigautam@gmail.com>

tests/interop/js_libp2p/js_node/src/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "src",
+  "version": "1.0.0",
+  "main": "ping.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "@libp2p/ping": "^2.0.36",
+    "@libp2p/websockets": "^9.2.18",
+    "libp2p": "^2.9.0",
+    "multiaddr": "^10.0.1"
+  }
+}

tests/interop/js_libp2p/js_node/src/ws_ping_node.mjs

@@ -0,0 +1,35 @@
+import { createLibp2p }          from 'libp2p'
+import { webSockets }            from '@libp2p/websockets'
+import { ping }                  from '@libp2p/ping'
+import { plaintext }             from '@libp2p/insecure'
+import { mplex }                 from '@libp2p/mplex'
+
+async function main() {
+  const node = await createLibp2p({
+    transports:           [ webSockets() ],
+    connectionEncryption: [ plaintext() ],
+    streamMuxers:         [ mplex() ],
+    services: {
+      // installs /ipfs/ping/1.0.0 handler
+      ping: ping()
+    },
+    addresses: {
+      listen: ['/ip4/127.0.0.1/tcp/0/ws']
+    }
+  })
+
+  await node.start()
+
+  console.log(node.peerId.toString())
+  for (const addr of node.getMultiaddrs()) {
+    console.log(addr.toString())
+  }
+
+  // Keep the process alive
+  await new Promise(() => {})
+}
+
+main().catch(err => {
+  console.error(err)
+  process.exit(1)
+})