readme.txt

用ICMP.DLL发送TCP/IP控制信息

README file for Tracer.ZIP

This ZIP file contains the source files and the executable
for Tracer. It also contains ICMP.LIB and associated header
files for convenience.

Tracer is a simple program that traces the route from
your machine to a specified Internet host. This is done
by sending a ping request to the target host, with the
time-to-live for the requests incrementing by one each 
attempt. Each request expires at a different host along
the way, causing a reply back from that host, and thus 
the route is traced out.

Tracer also displays the time taken to traverse each segment
of the route, both as raw numbers and as a (crude) graph that
serves to illustrate the relative times spent in each segment.
Use the -g option to see the "graphical" display.

You can also specify the maximum number of hops to search for
the target host, and the time to wait (in ms) for each reply.

NOTE 1: Tracer uses ICMP.DLL to send ICMP echo requests. This
DLL is not officially supported as part of the Win32 API.

NOTE 2: If you are using a dialup connection, the connection
must be up before running Tracer.