Ethernet TCP Port problem

Discussion created by lpcware Employee on Jun 15, 2016
Latest reply on Jun 15, 2016 by lpcware
Content originally posted in LPCWare by Jeff Adams on Mon Feb 03 08:03:05 MST 2014
Hi All,

this is my first posting on this forum, so please forgive me if I've picked the wrong area.

I have an odd problem with Ethernet comms at the moment. I can give full details, but I thought I would explain in general terms first, just in case someone has seen this before and can answer immediately.

I have an LPC1768, running on the code red RDB1768V2R4 development board, with the uip_tcp library from Xpresso 6.1.0_164.

According to wireshark, if I attempt to open a socket from the LPC1768, nominating any port other than port 80, the destination port appears to be set more or less randomly.

It seems unlikely that there would be such a problem with the library, but at the moment I'm struggling to get any further.

I'll add my code on the next post, but for now, has anyone seen this issue before? If not, I can assume it's my code that's not right. But if it is a known problem, it will save me some effort!