On Mon, Jan 26, 2004 at 10:34:06AM +0000, Alastair Reid wrote:
To access the fields, you will need to write a bunch of functions to read them out (and write them if you need). There's basically two approaches:
1) Write access functions in C and use the ffi interface to call them. For example, you might have a function to read the TTL field given a pointer to the IP header.
2) Write access functions in Haskell using functions from the Storable class and associated libraries.
3) Roll your own (de)serialization framework That's what I did. It's a bit complicated, but I will try to describe it within a couple of days. Right now all I can say is that it uses TH and has a couple of implementations of low-lever decoders, one of which reads directly from UArray Int Word8. I managed to achieve throughput of 3 MB / s for quite complicated binary protocols, and I think I can improve that even further. Best regards, Tom -- .signature: Too many levels of symbolic links