MonoTouch - WebRequest memory leak and crash?

Question

I\'ve got a MonoTouch app that does an HTTP POST with a 3.5MB file, and it is very unstable on the primary platforms that I test on (iPhone 3G with OS 3.1.2 and iPhone 4 wit

Answer 1

I think you should read in your file 1 KB (or some arbitrary size) at a time and write it to the web request.

Code similar to this:

byte[] buffer = new buffer[1024];
int bytesRead = 0;
using (FileStream fileStream = File.OpenRead("YourFile.txt"))
{
    while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
    {
        httpPostStream.Write(buffer, 0, bytesRead);
    }
}

This is off the top of my head, but I think it's right.

This way you don't have an extra 3MB floating around in memory when you don't really need to. I think tricks like this are even more important on iDevices (or other devices) than on the desktop.

Test the buffer size too, a larger buffer will get you better speeds up to a point (I remember 8KB being pretty good).