after i call close() method, why the tcp connect do not disconnected?

[飘扬的红领巾]

i use java-Websocket as a client to connect my data server。
when i want to disconnect from server,i call close() method(in WebSocketClient class)。
but i find the tcp connection don't disconnected。
java-Websocket version is 1.5.6

[Philip Roman]

Cannot reproduce this issue, for me TCP connection is closed as expected.
Please provide a small program which reproduces the issue