Server receives:
Error: unknown or invalid packet type 'suspend' received from WebSocket(ws socket: 127.0.0.1:10000 <- 127.0.0.1:50900)
The handler has not been registered yet due to the authentication failure.
Fixed in r22452. (backport not necessary - this is cosmetic)
We now keep track of whether we're connected or not. (from the moment we receive the server hello until we close the protocol)
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2277