Re: [lwip-users] OT: Binding UDP in WinXP

[Marek]

Hi, not sure if I understood you correctly, but isn't that udp packets (unlike tcp), are transmitted over the network without creating any connection before ?

2009/7/15 Bill Auerbach <address@hidden>

After half a day at this problem that I can’t solve, I figure someone here might say the answer is, “You can’t” and I’ll know I have a big problem. J

I can send UDP data from WinXP to lwIP using SentTo no problem.  I can receive from lwIP if I use the port and IP_ADDRANY.  I realized with 2 of my devices connected I have a problem so I tried to bind the UDP socket in WinXP to the IP address and port of the lwIP device (I know it from a prior UDP “here I am” broadcast).  WinXP refuses to bind (or connect) to a specific IP address.  I know I’m missing something and spent half the day not finding it.  How do you bind a WinXP SOCK_DGRAM socket to a remote IP address and port?

Thank you,

Bill

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