Xpra: Ticket #2742: add authentication to client sockets

See #2406, #2473, #2744.

At present, these sockets are unauthenticated.

Wed, 22 Apr 2020 13:28:56 GMT - Antoine Martin: status, description changed

status changed from new to assigned
description modified (diff)

Sat, 09 May 2020 05:38:08 GMT - Antoine Martin: priority changed

priority changed from major to critical

See #2406, #2473, #2744, #2412.

At present, these sockets are unauthenticated.

Sun, 04 Oct 2020 12:57:02 GMT - Antoine Martin: milestone changed

milestone changed from 4.1 to 4.2

Sat, 23 Jan 2021 05:59:32 GMT - migration script:

this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/2742