Program: 171210
Project: 171210
Buggy source:
@Override public void onMessage(WebSocket webSocket,String s){
  JSONObject json=new JSONObject(s);
  log.info(s);
  if (webSocket.isClosing()) {
    log.error("String_Node_Str" + webSocket.getRemoteSocketAddress().toString());
    return;
  }
switch (json.getString("String_Node_Str")) {
case "String_Node_Str":
    Core core=contextMap.get(webSocket).getCore(getShardId(webSocket,json));
  core.provideVoiceServerUpdate(json.getString("String_Node_Str"),json.getJSONObject("String_Node_Str"));
core.getAudioManager(json.getJSONObject("String_Node_Str").getString("String_Node_Str")).setAutoReconnect(false);
break;
case "String_Node_Str":
try {
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
AudioTrack track=Util.toAudioTrack(audioPlayerManager,json.getString("String_Node_Str"));
if (json.has("String_Node_Str")) {
track.setPosition(json.getLong("String_Node_Str"));
}
if (json.has("String_Node_Str")) {
track.setMarker(new TrackMarker(json.getLong("String_Node_Str"),new TrackEndMarkerHandler(player)));
}
player.setPause(json.optBoolean("String_Node_Str",false));
if (json.has("String_Node_Str")) {
player.setVolume(json.getInt("String_Node_Str"));
}
player.play(track);
SocketContext context=contextMap.get(webSocket);
context.getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str")).setSendingHandler(context.getPlayer(json.getString("String_Node_Str")));
sendPlayerUpdate(webSocket,player);
}
 catch (IOException e) {
throw new RuntimeException(e);
}
break;
case "String_Node_Str":
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player.stop();
break;
case "String_Node_Str":
Player player2=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player2.setPause(json.getBoolean("String_Node_Str"));
sendPlayerUpdate(webSocket,player2);
break;
case "String_Node_Str":
Player player3=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player3.seekTo(json.getLong("String_Node_Str"));
sendPlayerUpdate(webSocket,player3);
break;
case "String_Node_Str":
Player player4=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player4.setVolume(json.getInt("String_Node_Str"));
break;
case "String_Node_Str":
Player player5=contextMap.get(webSocket).getPlayers().remove(json.getString("String_Node_Str"));
if (player5 != null) player5.stop();
AudioManager audioManager=contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str"));
audioManager.setSendingHandler(null);
audioManager.closeAudioConnection();
break;
default :
log.warn("String_Node_Str" + json.getString("String_Node_Str"));
break;
}
}

Fixed version (ground truth):
@Override public void onMessage(WebSocket webSocket,String s){
  JSONObject json=new JSONObject(s);
  log.info(s);
  if (webSocket.isClosing()) {
    log.error("String_Node_Str" + webSocket.getRemoteSocketAddress().toString());
    return;
  }
switch (json.getString("String_Node_Str")) {
case "String_Node_Str":
    Core core=contextMap.get(webSocket).getCore(getShardId(webSocket,json));
  core.provideVoiceServerUpdate(json.getString("String_Node_Str"),json.getJSONObject("String_Node_Str"));
core.getAudioManager(json.getJSONObject("String_Node_Str").getString("String_Node_Str")).setAutoReconnect(false);
break;
case "String_Node_Str":
try {
SocketContext ctx=contextMap.get(webSocket);
Player player=ctx.getPlayer(json.getString("String_Node_Str"));
AudioTrack track=Util.toAudioTrack(ctx.getAudioPlayerManager(),json.getString("String_Node_Str"));
if (json.has("String_Node_Str")) {
track.setPosition(json.getLong("String_Node_Str"));
}
if (json.has("String_Node_Str")) {
track.setMarker(new TrackMarker(json.getLong("String_Node_Str"),new TrackEndMarkerHandler(player)));
}
player.setPause(json.optBoolean("String_Node_Str",false));
if (json.has("String_Node_Str")) {
player.setVolume(json.getInt("String_Node_Str"));
}
player.play(track);
SocketContext context=contextMap.get(webSocket);
context.getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str")).setSendingHandler(context.getPlayer(json.getString("String_Node_Str")));
sendPlayerUpdate(webSocket,player);
}
 catch (IOException e) {
throw new RuntimeException(e);
}
break;
case "String_Node_Str":
Player player=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player.stop();
break;
case "String_Node_Str":
Player player2=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player2.setPause(json.getBoolean("String_Node_Str"));
sendPlayerUpdate(webSocket,player2);
break;
case "String_Node_Str":
Player player3=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player3.seekTo(json.getLong("String_Node_Str"));
sendPlayerUpdate(webSocket,player3);
break;
case "String_Node_Str":
Player player4=contextMap.get(webSocket).getPlayer(json.getString("String_Node_Str"));
player4.setVolume(json.getInt("String_Node_Str"));
break;
case "String_Node_Str":
Player player5=contextMap.get(webSocket).getPlayers().remove(json.getString("String_Node_Str"));
if (player5 != null) player5.stop();
AudioManager audioManager=contextMap.get(webSocket).getCore(getShardId(webSocket,json)).getAudioManager(json.getString("String_Node_Str"));
audioManager.setSendingHandler(null);
audioManager.closeAudioConnection();
break;
default :
log.warn("String_Node_Str" + json.getString("String_Node_Str"));
break;
}
}