[Serusers] Chaining mediaproxy

[Henry Jensen]

How can I chain two mediaproxies?

It's mentioned in the Readme, that this is possible, but it's
not mentioned how.

I have two SER servers in two networks, both running with mediaproxy.

Client A can reach SER A, SER A connects to SER B (with forward statement), which contacts Client B.

It's, because of the design of the networks, not possible
that client A can connect SER B or client B can connect SER A.

I configured SER and mediaproxy with default values (from the mediaproxy-example ser.cfg),
however, it seems, that the two mediaproxies don't talk to each other, they are waiting
for Client connection instead.

Regards,
Henry