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kayrus / gof5

Open Source F5 BIG-IP VPN client for Linux, MacOS, FreeBSD and Windows
Apache License 2.0
140 stars 25 forks source link

Understand and properly log "session expired" condition #9

Closed 0anton closed 4 years ago

0anton commented 4 years ago

My VPN expires after 24 hours & closed connection. Gof5 can understand this situation and log it properly (there not much one can do to react on that). Current output:

2020/07/17 09:52:26 unknown PPP data:
00000000  ff 03 c0 21 05 03 00 13  53 65 73 73 69 6f 6e 20  |...!....Session |
00000010  65 78 70 69 72 65 64                              |expired|
kayrus commented 4 years ago

@0anton this is the server side limitation. Once session is established, it is valid for 24h. I'll try to add a proper handling for this behavior.

kayrus commented 4 years ago

Fixed in https://github.com/kayrus/gof5/commit/ee825a62fc0ee851bd08baa22c25bed78efabb52 @0anton feel free to introduce a proper ppp protocol logic. Currently it is written based on the traffic dump reverse engineering without any reference to RFC.

0anton commented 4 years ago

Thanks a lot, @kayrus! Sure, it is a server side configuration. I never meant gof5 does anything wrong here. I'd just thought that you and community can profit if gof5 properly recognizes this situation. Though for now I don't have any ideas, what client can do once the session is expired (besides of logging in again and supplying a proper password - which is a user involvement anyway). So far, all works perfect! Thanks for a wonderful tiny tool!