Transcode and stream on demand

[stillbeginner]

I want to transcode/stream http streams to rtsp on demand.

Basicly, if user opens

vlc rtp://127.0.0.1:8080/test123.sdp

I would open a connection to http stream and transcode/stream it to user ...

clvc 'http://....../stream?id=123' --sout '#rtp{dst=127.0.0.1,port=1234,sdp=rtsp://127.0.0.1:8080/test123.sdp}'



Is there a way to handle this? My problem is that I cannot have more than one connection to the http server, so I have to start it somehow on demand.

Thanks