diff --git a/GoBot/discord/backend/plugin.go b/GoBot/discord/backend/plugin.go
new file mode 100644
index 0000000..ec5ef12
--- /dev/null
+++ b/GoBot/discord/backend/plugin.go
@@ -0,0 +1,62 @@
+package backend
+
+import (
+	"fmt"
+
+	"github.com/bwmarrin/discordgo"
+
+	"TerraOceanBot/db"
+	"TerraOceanBot/discord/config"
+	"TerraOceanBot/server"
+)
+
+func UpdateVoiceChannelState(s *discordgo.Session) {
+	for _, guild := range s.State.Guilds {
+		if guild.ID != config.GuildID {
+			continue
+		}
+		for _, vs := range guild.VoiceStates {
+			if vs.ChannelID != config.VoiceChannel {
+				continue
+			}
+			if vs.Deaf || vs.SelfDeaf {
+				continue
+			}
+			username, err := db.GetMinecraftUsername(vs.UserID)
+			if err == db.ErrNotFound {
+				continue
+			}
+			if err != nil {
+				//TODO Use auditError() once it's moved to its own package.
+				fmt.Println(err)
+				continue
+			}
+			server.ConnectUser(username)
+		}
+	}
+}
+
+func VoiceStateUpdate(vs *discordgo.VoiceState) {
+	username, err := db.GetMinecraftUsername(vs.UserID)
+	if err == db.ErrNotFound {
+		return
+	}
+	if err != nil {
+		//TODO Use auditError() once it's moved to its own package.
+		fmt.Println(err)
+		return
+	}
+	if vs.GuildID != config.GuildID {
+		server.DisconnectUser(username)
+		return
+	}
+	if vs.ChannelID != config.VoiceChannel {
+		server.DisconnectUser(username)
+		return
+	}
+	if vs.Deaf || vs.SelfDeaf {
+		server.DisconnectUser(username)
+		return
+	}
+	server.ConnectUser(username)
+}
diff --git a/GoBot/discord/config/discordID.go b/GoBot/discord/config/discordID.go
index 9fd25c0..9e81745 100644
--- a/GoBot/discord/config/discordID.go
+++ b/GoBot/discord/config/discordID.go
@@ -7,3 +7,4 @@ const VoteChannel = "627164246056239104"
 const AnnounceCustomChannel = "627165467269922864"
 const AnnounceInviteChannel = "627165467269922864"
 const VoteSuggestionChannel = "627164561644191744"
+const VoiceChannel = "627165587759693827"
diff --git a/GoBot/discord/discord.go b/GoBot/discord/discord.go
index 0167c94..09c06ef 100644
--- a/GoBot/discord/discord.go
+++ b/GoBot/discord/discord.go
@@ -6,6 +6,7 @@ import (
 
 	"github.com/bwmarrin/discordgo"
 
+	"TerraOceanBot/discord/backend"
 	"TerraOceanBot/discord/modules"
 )
 
@@ -28,6 +29,7 @@ func StartBot(token string, kill chan bool) {
 
 	fmt.Println("Bot is now running. Press CTRL-C to exit.")
 	go modules.ListenToVoteFinishes(dg)
+	go backend.UpdateVoiceChannelState(dg)
 
 	<-kill
 
diff --git a/GoBot/discord/listener.go b/GoBot/discord/listener.go
index ab0f995..bc42c38 100644
--- a/GoBot/discord/listener.go
+++ b/GoBot/discord/listener.go
@@ -5,6 +5,7 @@ import (
 
 	"github.com/bwmarrin/discordgo"
 
+	"TerraOceanBot/discord/backend"
 	"TerraOceanBot/discord/config"
 	"TerraOceanBot/discord/modules"
 )
@@ -29,3 +30,7 @@ func ProcessVote(s *discordgo.Session, m *discordgo.MessageCreate) {
 		modules.VoteSuggestion(s, m)
 	}
 }
+
+func ProcessVoiceStateUpdate(s *discordgo.Session, vs *discordgo.VoiceStateUpdate) {
+	backend.VoiceStateUpdate(vs.VoiceState)
+}
diff --git a/GoBot/server/hub.go b/GoBot/server/hub.go
index 196aacf..bfd37ff 100644
--- a/GoBot/server/hub.go
+++ b/GoBot/server/hub.go
@@ -1,8 +1,14 @@
 package server
 
-import "github.com/gorilla/websocket"
+import (
+	"fmt"
+	"strings"
+
+	"github.com/gorilla/websocket"
+)
 
 var clients = make(map[*websocket.Conn]bool)
+var connectedUsers = make(map[string]bool)
 
 func newSession(who *websocket.Conn) {
 	clients[who] = true
@@ -13,5 +19,34 @@ func disconnectSession(who *websocket.Conn) {
 }
 
 func handleIncomingMessage(who *websocket.Conn, msg string) {
-	//TODO
+	message := strings.SplitN(msg, " ", 2)
+	switch message[0] {
+	case "query":
+		if len(message) < 2 {
+			return
+		}
+		if !connectedUsers[message[1]] {
+			who.WriteMessage(websocket.TextMessage, []byte("leave "+message[1]))
+		}
+	default:
+		fmt.Println("Unknown message:" + msg)
+	}
+}
+
+func broadcast(message string) {
+	for k, _ := range clients {
+		k.WriteMessage(websocket.TextMessage, []byte(message))
+	}
+}
+
+func ConnectUser(mcUsername string) {
+	connectedUsers[mcUsername] = true
+}
+
+func DisconnectUser(mcUsername string) {
+	delete(connectedUsers, mcUsername)
+}
+
+func RequestSync() {
+	broadcast("sync")
 }