How to send simple file over network!

Hi!!
can any body guide me how to send a simple txt and other files (not media files) over net!
what would i have to do to do so ?
do i have to understand the files headers and got to use udp protocols if yes then plz tell me how
Thank you!

Well thanks for informing me...
But what if i want to send a media file using udp not rtp protocol then should i have to so the same ?
any one going to help me in other way ?
Thank you !

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