[SSHD-782] Consider implementing a "reverse" keep-alive mechanism in the server

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.7.0
• Fix Version/s: 2.3.0
• Labels: keepalive ssh sshd
• Flags: Important
• Assignee: Lyor Goldstein
• Reporter: Lyor Goldstein
• Created: 27/Oct/17 15:07
• Updated: 28/Feb/19 07:02
• Resolved: 28/Feb/19 07:02

Description

The current code contains only a keep-alive mechanism from clients to servers. We should consider implementing a "reverse" keep-alive mechanism from servers to clients using SSH_MSG_IGNORE messages. This mechanism should be along the lines of the Client/ServerAliveInterval and Client/ServerAliveCountMax parameters described in sshd_config and/orHow to Keep Alive SSH Sessions The mechanism can be used to avoid read timeout on the client side (e.g. SSHD-781)

Issue Links

• is related to: SSHD-901 InterruptedByTimeoutException occurring in client despite keepalive global request being sent
• relates to: SSHD-781 The heartbeat task of client not support keepalive function well