Help with Net commands

[recneps]

Ok now, im trying to make a file transfer program, and ive got it all done, including verifiying if other is ready before starting,and stuff, but i always get incompatible stream when trying to write to the net stream.... but in the reference it says it can be used for "put, get, read and write" so eh?
Anyways, can read data be "put" over the net and then written to a file?
well heres the 2 files (i made it client and server to make it easier for debugging.)