won't able to read on UDP "recvfrom"

no , there is no error message...but still it display only first packet..not second onward.

1. can we re-use the ImgBuff[][] again and again for data writing on same location like ImgBuff[0][1448] ...?

like first i receive the data and write in ImgBuff[0][1448] and then process it and display received data using printf then again receive the new data on same location ImgBuff[0][1448] and again process it display it and again follow the same procedure.

2. when we create variable like ImgBuff[0][1448] , where it gose i mean where it create (SDRAM,Nios data Cache, etc), because as i increase the buffer size it won't even display the first received packet.

3. for printing the received data can we use the same variable (ImgBuff[0][1448] ) in which we received the data, or first we copy it in some other variable for printing/display/processing etc.

4. is printf function affect the received performance..? or due to less priority it won't affect.

5. Is it possible that printf function skip printing data due to less priority compare to function recvfrom.

6. Is it possiable to design client/server application without using uc/OS-ii or any other OS. ?