voice: start using provided IP rather than manually resolving

src/client/voice/VoiceConnection.js

@@ -255,6 +255,11 @@ class VoiceConnection extends EventEmitter {
        */
       this.emit('failed', new Error(reason));
     } else {
+      /**
+       * Emitted whenever the connection encounters an error.
+       * @event VoiceConnection#error
+       * @param {Error} error The encountered error
+       */
       this.emit('error', new Error(reason));
     }
     this.status = Constants.VoiceStatus.DISCONNECTED;
@@ -367,20 +372,10 @@ class VoiceConnection extends EventEmitter {
    * @param {Object} data The received data
    * @private
    */
-  onReady({ port, ssrc }) {
+  onReady({ port, ssrc, ip }) {
     this.authentication.port = port;
     this.authentication.ssrc = ssrc;
-
-    const udp = this.sockets.udp;
-    /**
-     * Emitted whenever the connection encounters an error.
-     * @event VoiceConnection#error
-     * @param {Error} error The encountered error
-     */
-    udp.findEndpointAddress()
-      .then(address => {
-        udp.createUDPSocket(address);
-      }, e => this.emit('error', e));
+    this.sockets.udp.createUDPSocket(ip);
   }
 
   /**

src/client/voice/VoiceUDPClient.js

@@ -1,5 +1,4 @@
 const udp = require('dgram');
-const dns = require('dns');
 const Constants = require('../../util/Constants');
 const EventEmitter = require('events').EventEmitter;
 
@@ -65,23 +64,6 @@ class VoiceConnectionUDPClient extends EventEmitter {
     return this.voiceConnection.authentication.port;
   }
 
-  /**
-   * Tries to resolve the voice server endpoint to an address.
-   * @returns {Promise<string>}
-   */
-  findEndpointAddress() {
-    return new Promise((resolve, reject) => {
-      dns.lookup(this.voiceConnection.authentication.endpoint, (error, address) => {
-        if (error) {
-          reject(error);
-          return;
-        }
-        this.discordAddress = address;
-        resolve(address);
-      });
-    });
-  }
-
   /**
    * Send a packet to the UDP client.
    * @param {Object} packet The packet to send