recvfrom socket system call does not return anything for initial 3-4 minutes and then works fine.

[Tuks]

Hello All,

There is simple client server application running in my product.
There is a UDP socket opened with the server and my product sends a
packet successfully to the server.
Then it is blocked on the recvfrom call for receiving the data.

But, for initial 3-4 minutes, this recvfrom call does not return
anything even if I can see a valid response (pakcet) on the Ethereal
has come. But, suddenly, after 3-4 minutes, it starts receving the
packets and then works fine.

Can someone please help me in understanding the issue with recvfrom?

Appreciate you help!!!

-Thanks & Regards,
Tukaram M. Khandekar.