Hi! On 17:20 Wed 21 Sep , Daniel Ellis wrote:
Howdy,
I understand that data fragmentation happens across TCP packets, and in my case that is what is happening. The packets I'm seeing usually run around 1450 in length, and are always cut into two packets at the 1400 mark. This works fine most of the time, since the call to recv is being passed a len of 4096 (via Python's socket.recv, which I'm assuming is just a wrapper around the system call). But sometimes I'll get all of the data I request, even across TCP packet boundaries (so the full 1450 bytes), and other times, it stops at a single packet, at which point I need to make another recv call.
The recv() call currently returns: - as soon as there is some data in the receive queue - all the data which is in the queue, up your buffer size. -Michi -- programing a layer 3+4 network protocol for mesh networks see http://michaelblizek.twilightparadox.com