[cs631apue] hw4 questions.

[afonsec1]

Can we have/allow a port number zero giving by the user?
When writing for the first time into the log file,  should truncate or 
append for each session?
If we are in debug mode but log file is giving, should we ignore the 
log file name? or throw an error?
For printing usage (-h),  should always send to stdout or stderr?
For logging request, since we haven't implemented response, I cannot 
log the status of the request and the size of the response?, Should I 
skip them?

Armando.