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Re: [lwip-users] Slow release time of closed TCP PCBs
From: |
Lou Cypher |
Subject: |
Re: [lwip-users] Slow release time of closed TCP PCBs |
Date: |
Thu, 18 Jun 2009 11:00:36 +0200 |
User-agent: |
Thunderbird 2.0.0.21 (Windows/20090302) |
> What you are seeing is that the PCBs are remaining in a wait-state for
> some time. This is to prevent packets from the old (closed) connection
> being possibly accept on a new connection. The port stays known to the
> stack and it can send RST packets when new packets for that port are
> received. However, while these PCBs are not yet freed, they are *not* in
> an active state any more, thus tcp_slowtmr is correct.
Everything is clear, does make sense to me.
How long can be "some time"? :)
> I guess you'll have to set MEMP_NUM_TCP_PCB higher so that the timeout
> does not keep all PCBs open...
Well, provided I can't lower that time above, looks like the only way out (...)
Thanks for help,
Lou
- [lwip-users] Slow release time of closed TCP PCBs, Lou Cypher, 2009/06/17
- Re: [lwip-users] Slow release time of closed TCP PCBs, address@hidden, 2009/06/17
- Re: [lwip-users] Slow release time of closed TCP PCBs,
Lou Cypher <=
- Re: [lwip-users] Slow release time of closed TCP PCBs, Kieran Mansley, 2009/06/18
- Re: [lwip-users] Slow release time of closed TCP PCBs, David Empson, 2009/06/18
- Re: [lwip-users] Slow release time of closed TCP PCBs, Lou Cypher, 2009/06/19
- Re: [lwip-users] Slow release time of closed TCP PCBs, Lou Cypher, 2009/06/19
- Re: [lwip-users] Slow release time of closed TCP PCBs, Kieran Mansley, 2009/06/19