I have been having a heck of a time getting Udp sockets working correctly on Windows Phone 7 (Mango). First I had this problem udp async receive and now that I figured it out, I am seeing a weird behavior where the end of the data I send over the socket is all zero.
At first, I thought there was a weird size cap. All my packets were user 1380 bytes. I was seeing that for some reason, after ~byte 1220 it was all zeros, but according to the socket, I was still receiving all ~1380 bytes. I matched up the sizes with my server application, and I was receiving the correct number of byte. So I printed the bytes out on both sides of the connection and saw this issue with much of the last 200 bytes or so being zero.
So I reduced the size of my packet data to ~1200 bytes, and I was still seeing the issue. I even reduced it to 1000 bytes and still!
Any ideas?
Update – I have done some testing, and it seems that the last 144 bytes are FUBAR. Sometimes they are zero, sometimes they are garbage. Think this is a bug?
Sorry, I had a bug in my code where I was using an array over, overwriting my own data.