Talk:UIP (micro IP)

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Despite the claims in the article uIP is not fully compliant with RFC1122 as it cannot leap tall buildings at a single bound. (talk) 22:10, 17 February 2016 (UTC)

Dubious-discuss annotation for uIP responding too fast for a PC[edit]

I think this is factual, but I must respond with personal experience. In 2012 I personally ported uIP0.9 to an ARM Cortex M0 running at 20mHz, using an on-board DMA ethernet. The response time was under 100us, (it varied from 15us to 90us, depending on what the event loop was doing, and what the packets contained). My monitoring PC, running Windows 7, could not "see" the first packet from uIP, either on packet-sniffing software (Wireshark), web browser, or even a ping utility. The PC was a quad-core pentium running at 3.5 GHz. It was old, but never seemed especially slow to me. The packet was clearly visible on an o-scope, so I have no doubt that it was sent. That's how I got the timing. I added a 1 millisecond looping delay to the uIP driver, and then it worked, but the event loop was slower. I ended up restoring the "send it twice" code that was in the standard distribution. This worked; The send it twice code just reset the DMA pointers, so the event loop was pretty fast. The fact that the delay enabled the PC to receive the first packet indicates to me that it was the PC's problem. Ray Van De Walker (talk) 23:52, 12 March 2019 (UTC)


when talking about things like "was an Open Source ..." and "Later versions of uIP..." it would be helpful if some dates were included. — Preceding unsigned comment added by (talk) 01:39, 27 August 2014 (UTC)

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