UDP Socket Async Receive

Question

I deliberately issue socket.BeginReceiveFrom call and pass the buffer of 16 bytes, despite that I know that the other side send messages of about 2,000 bytes. I do that deliberately because I just want to read the header of 16 bytes first and then issue a second receive call that will read the payload which is of variable length. As you may guess the header includes 4 bytes that indicates the payload length.

That said, I get an exception that says that the buffer is not big enough to receive the message... How come?

Answer 1

Thats not possible, udp are datagrams instead of streaming. You cannot read messages partial.