SocketIO Worker error

[majintao]

When i run the sh script：

websocket-bench -a 1000 -c 100 -w 5 -p websocket -g websocket-bench.js -m 5 -v http://10.10.53.53:8001

The Error Appear! Is it a bug?

SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}
SocketIO Worker error: {"code":"parser error"}

[brainpoint]

same issue as this