Merge pull request #704 from dondish/develop

Fixed holdup issue in voice

Discord changed the IP used for VoiceConnection.  Change code to follow suit.

go.mod

@@ -4,3 +4,5 @@ require (
 	github.com/gorilla/websocket v1.4.0
 	golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16
 )
+
+go 1.13

voice.go

@@ -243,6 +243,7 @@ type voiceOP2 struct {
 	Port              int           `json:"port"`
 	Modes             []string      `json:"modes"`
 	HeartbeatInterval time.Duration `json:"heartbeat_interval"`
+	IP                string        `json:"ip"`
 }
 
 // WaitUntilConnected waits for the Voice Connection to
@@ -542,7 +543,7 @@ func (v *VoiceConnection) udpOpen() (err error) {
 		return fmt.Errorf("empty endpoint")
 	}
 
-	host := strings.TrimSuffix(v.endpoint, ":80") + ":" + strconv.Itoa(v.op2.Port)
+	host := v.op2.IP + ":" + strconv.Itoa(v.op2.Port)
 	addr, err := net.ResolveUDPAddr("udp", host)
 	if err != nil {
 		v.log(LogWarning, "error resolving udp host %s, %s", host, err)