[GUACAMOLE-1917] Updates to clipboard contents may be delayed due to lack of flush

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 1.5.5
• Component/s: guacamole-server
• Assignee: Mike Jumper
• Reporter: Mike Jumper
• Created: 02/Feb/24 16:57
• Updated: 02/Feb/24 17:16
• Resolved: 02/Feb/24 17:16

Description

All protocols currently implemented by guacamole-server rely on guac_common_clipboard to maintain and resend the contents of the remote clipboard, however the guac_common_clipboard_send() function lacks a call to guac_socket_flush() after the clipboard has been sent. Depending on the size of data copied, this can result in connected clients not actually receiving the changed clipboard data until something else happens to flush the socket, such as the end of a frame.