Some details about the Traceroute implementation

[Rafael Stekolshchik <klivlend@internet-zahav.net>]

  Hello,

  Some details about the Traceroute implementation may be found
  on  http://cities.lk.net/trproto.html

- ICMP, IP, UDP in the Traceroute.
- Sockets subroutins which the Tracerroute uses:
  sendto,  recvfrom, setsockopt, select.
- Why the Traceroute uses Raw Sockets, why
  the Tracerote sends the UDP message and gets ICMP messages?
- Own IP and UDP headers the Traceroute creates.
- ICMP Destination Unreachable messages.
- Protocol types, UDP Ports,  Timeouts
   and some other information.

  Rafael