Re: [lwip-users] TCP socket thread safety

[Pomeroy, Marty]

Late to the party, but full duplex is first an issue for your hardware
and driver.  If your hardware is set up to send and receive using DMA,
data can be coming in at the same time it is going out.  As long as you
have enough receive buffers for the largest receive burst, and avoid
promiscuous modes...

A single thread processing both directions has a disadvantage only in
comparison to a multi-processor system, where you can farm the send and
receive to separate cores in true parallel.  That's really only needed
on extremely high throughput applications, like a switch.  On a single
core, send and rcv will be ultimately sequential anyway, even if in
different threads.

HTH!

Marty


-----Original Message-----
From: address@hidden
[mailto:address@hidden On
Behalf Of Shaun Crampton
Sent: Tuesday, February 12, 2013 12:03 PM
To: Mailing list for lwIP users
Subject: Re: [lwip-users] TCP socket thread safety

Thanks for the quick response.

Duplex communication is pretty important for my application.  Is there a
way to do it with one of the other APIs (e.g. the raw API)?