TODOs, in random order:
=======================

- siproxd daemonized: looks like clashes between threads
- Daemonizing: daemon() f*** up a following pthread_create
- is select() really tread safe? libc bug?
- lost 200 ACK immediately before RTP starts...

- TERM handler

- /var/run PID file

- check via loop and private IP addresses
  can comment be used to store a unique ID in there?

- multiple inbound interfaces - do I need to be aware of inbound at all?

- Documentation (yeah, yeah...)

- support for proxy chaining - UPNP support?

- general security issues
- security tests for received SIP messages (function securitycheck)

- automagically create a proper config file during install

- get_ip_by_host: reduce DNS timeouts (seems to be a more complex problem...)

- (support for "full duplex" RTP proxying) 

- via loop detection: send 482 error code

- support Record-Route header

- feature: don't bind to 0.0.0.0 address, but only to inbound/outbound IF's
  (defined by IFNAME)