NicheStack Issue!

Hi,

I am working on Altera statix FPGA and Nios II. Here in my application I am using NicheStack IP for TCP/IP interface. i am on client side where condition is that i have to continuously send the data and receive occasionally. Means server will receive continuously but may are may not send through whole day.

problem is that as soon as i put receive in client it blocks there.

Plz tell me what is the option for making socket non blocking?

Thanks in advance.

sblrde