CloseHandler not called

[alexppxela]

Hi,

My server is reading data looping on ws.NextReader().

The client opens the websocket like this:
conn, rsp, err := websocket.DefaultDialer.Dial(u.String(), nil).
When it closes the websocket conn.Close(), the server is not correctly notified.

ws.NextReader() returns:

• err: close 1006 (abnormal closure): unexpected EOF

But CloseHandler is not called.

[garyburd]

This is expected. The close handler is called when a close message is received from the peer. The peer did not send a close message.

What does the application do in the close handler?

Most applications should handle close messages as part of their normal error handling. Applications should only set a close handler when the application must perform some action before sending a close message back to the peer.

[alexppxela]

I was confused because I thought that close handler was called whatever the cause of close.
My application is a gateway between a client and a server, so when my client websocket is closed, I close the connection to the server. I use close handler as a notification of close event instead of a last action before sending the frame back to peer.
Thanks for your answer.

[garyburd]

If you are communicating with the server using the websocket protocol, then you may find this code to be helpful.

[alexppxela]

Great helpful code, thanks.
Unfortunately, I do not use websocket to server.