#upnp-av

upnp-av is a server implementing a minimal UPnP MediaServer device. It presents the contents of a local directory as a UPnP ContentDirectory, enabling other devices on the network (such as smart TVs) to browse the media files it contains. The files themselves are then streamed by some other HTTP server which is configured separately.

#Building

upnp-av is written in POSIX C99, and also requires memmem. It can be built using

make

#Configuring an HTTP server

upnp-mediaserver implements directory navigation through the UPnP ContentDirectory service. The transfer of the files is handled through a standard HTTP server, serving that same directory at some location.

One TV I tested with required a special DLNA header in order to support pause and seeking: contentFeatures.dlna.org: DLNA.ORG_OP=01. This allows the player to use the HTTP/1.1 Range header to fetch certain fragments of the file. On nginx, this header can be added with

add_header contentFeatures.dlna.org DLNA.ORG_OP=01;

#Running

To run upnp-mediaserver, you must choose a UUID to identify the server. This can be generated with uuidgen from util-linux. Currently, you also need to explicitly specify the address to bind to.

UUID=$(uuidgen)
upnp-mediaserver -l bind-address -C /path/to/media "$UUID" http://mediaserver/

Resource URLs are contructed by prepending the given URL prefix (in this example, http://mediaserver/) with the URL-encoded filename in the local directory. The expectation is that these map 1-1 with the files served by the HTTP server.

#Current status

It works, but some of the code is a little rough and needs some clean-up.