Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

Error ip header checksum

Hi all, I have a question about lwIP. I managed to set up a connection between PC and NIOS II. So far so good, when I send a message to pc it's ok. However when I send a message to NIOS and...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
20 years ago

--- Quote Start ---

originally posted by dannyjacobs@Dec 15 2005, 02:29 AM

hi all,

i have a question about lwip. i managed to set up a connection between pc and nios ii. so far so good, when i send a message to pc it's ok. however when i send a message to nios and look at it with ethereal i always get an incorrect checksum it's always 0x0000.

is this a known issue, because i can't seem to solve it. my data comes in correct, but it is just something that bothers me...

cheers,

danny

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=11577)

--- quote end ---

--- Quote End ---

I assume you mean the UDP checksum, if so I suggest you type "UDP checksum zero" into google or if you wish to understand TCP/IP buy Internetowrking with TCP/IP by Douglas Comer.