[Modify] Use the Is properties
[Modify] Use the Is properties

2Toad/websocket-sharp,sta/websocket-sharp,jogibear9988/websocket-sharp,2Toad/websocket-sharp,jogibear9988/websocket-sharp,sta/websocket-sharp,jogibear9988/websocket-sharp,jogibear9988/websocket-sharp,sta/websocket-sharp,2Toad/websocket-sharp,2Toad/websocket-sharp,sta/websocket-sharp