close channels so that everything dies properly

bridge.go

@@ -68,8 +68,20 @@ func startBridge(discord *discordgo.Session, discordGID string, discordCID strin
 			<-ticker.C
 			if mumble.State() != 2 {
 				log.Println("Lost mumble connection " + strconv.Itoa(int(mumble.State())))
-				die <- true
-				m.Close <- true
+				select {
+				default:
+					close(die)
+				case <-die:
+					//die is already closed
+				}
+
+				select {
+				default:
+					close(m.Close)
+				case <-m.Close:
+					//m.Close is already closed
+				}
+				return
 			}
 		}
 	}()
@@ -81,6 +93,9 @@ func startBridge(discord *discordgo.Session, discordGID string, discordCID strin
 		log.Println("\nGot internal die request. Terminating Mumble-Bridge")
 		dgv.Disconnect()
 		det.Detach()
+		close(die)
+		close(m.Close)
+		close(toMumble)
 		Bridge.Connected = false
 	}
 }

discord.go

@@ -137,8 +137,14 @@ func discordReceivePCM(v *discordgo.VoiceConnection, die chan bool) {
 			lastReady = true
 			readyTimeout.Stop()
 		}
-
-		p, ok := <-v.OpusRecv
+		var ok bool
+		var p *discordgo.Packet
+		select {
+		case p, ok = <-v.OpusRecv:
+		case <-die:
+			log.Println("killing discord ReceivePCM")
+			return
+		}
 		if !ok {
 			log.Println("Opus not ok")
 			continue

main.go

@@ -5,6 +5,7 @@ import (
 	"log"
 	"os"
 	"os/signal"
+	"runtime"
 	"strconv"
 	"syscall"
 	"time"
@@ -101,6 +102,13 @@ func main() {
 	userCount := make(chan int)
 	go pingMumble(*mumbleAddr, strconv.Itoa(*mumblePort), userCount)
 	go discordStatusUpdate(discord, userCount)
+	go func() {
+		for {
+			time.Sleep(3 * time.Second)
+			log.Println(runtime.NumGoroutine())
+			//pprof.Lookup("goroutine").WriteTo(os.Stdout, 1)
+		}
+	}()
 	if *autoMode {
 		Bridge.AutoChan = make(chan bool)
 		go AutoBridge(discord)