[En-Nut-Discussion] TCP MSS

[András Szemző]

Hi,

I've implemented a wget like function to a sam7x. It will download a  
file from a webserver, and store in in dataflash.
On ethernet link, I read the remote file in 256 byte chunks, and  
everything is works fine.

But I have a problem on doing the same on a GPRS link. I tried to read  
the file by 256, 128 or 64 byte chunks,
but after 2 256 byte read the fread only read 24 byte. The same is  
true for 128 or 64 byte chunk, so I always read
536 byte, which is default TCP_MAXSEG.

so I read:

256
256
24
256
256
24

and so on.

I tried to increase TCP MSS, but it didn't helped.

Is there a solution to achive the same function on GPRS just like on  
ethernet?
Or what I missed?


Thanks,
Andras