Improve consistency of interface

lib/Relays.ts

@@ -0,0 +1,26 @@
+import {Socket} from './util/Socket'
+import {EventBus} from './util/EventBus'
+
+export class Relays {
+  sockets: Socket[]
+  bus: EventBus
+  constructor(sockets) {
+    this.sockets = sockets
+    this.bus = new EventBus()
+    this.onMessage = this.onMessage.bind(this)
+
+    sockets.forEach(socket => socket.bus.on('message', this.onMessage))
+  }
+  send(...payload) {
+    this.sockets.forEach(socket => {
+      await socket.connect()
+
+      socket.send(...payload)
+    })
+  }
+  onMessage(message) {
+    const [verb, ...payload] = message
+
+    this.bus.handle(verb, ...payload)
+  }
+}