puf developement history (old versions by Anders Gavare):
---------------------------------------------------------

0.0.0 (14 Jan 1999)
  * Test

0.0.1 (14 Jan 1999)
  * Adding bytes/second counter...
  * Adding file reopen if we are short on free file handles

0.0.2 (15 Jan 1999)
  * Trying to add automatic directory download.
  * If a socket doesn't receive data within a specific time (60 seconds 
    typically), the socket is closed and the url status is set to "Error".
    
0.0.3 (20 Jan 1999)
  * Internal cache for hostname lookups added.
  * Fixed bug: file timeout doesn't cause segmentation fault anymore.
  * Reniced output when running in verbose==0 mode.
  
0.0.4 (23 Jan 1999)
  * Better "per pass" statistics.
  
0.0.5 (20 Feb 1999)
  * Adding -Wall compilation option, removing the MACHINE_ID stuff.
  * Adding -w option.
  
0.0.6 (27 Feb 1999)
  * Added agent.h (HTTP_AGENT define).
  
0.0.7 (9 Mar 1999)
  * Beginning on what will be the 0.1.x-series
  * Added -M option. Added -T option.
  * Added -f and -F options.
  * Works quite ok. Directory creation.
  
0.0.8 (11 Mar 1999)
  * Added caching for url-chain information.
  * Fixed minor "bugs".
  
0.0.9 (16 Mar 1999)
  * Freshed up README.
  * Freshed up dns_cache.c
  * Freshed up gaforzia.c.
  * Increased DEFAULT_MAX_CONNECT_RETRIES from 3 to 5.
  * Refusing to add urls with questionmarks or @-signs.
  * Finnished the add_relative_url() stuff (buggy?).
  * Ignoring urls with #-signs. 
  * Adding SECURE_GAFORZIA flag (to avoid seg. faults in some places).
  * Added hash-codes for quicker searches in the url chain.
  * Found out what the bug can be about...
  * Changed .fetched_index to .fetched_index.html
  
0.0.10 (20 Mar 1999)
  * Refreshed dns_cache.c.
  * Added HTTP_CONNECTION and HTTP_ACCEPT define strings to agent.h.
  * Trying to fix the seg faults in handle_databuf().
  * Added trivial handling of http result codes (200 & 4xx)
  * Hopefully fixed the seg faults...
  * Added "top speed" information after all fetches are completed.

0.0.11 (21 Mar 1999)
  * Corrected the "current" and "top" kcps meters using gettimeofday() 
    instead of time().
  * Uses a string variable http_agent instead of HTTP_AGENT
    for runtime modification. Added "uname" to http_agent.
  * Follows error #3xx "Location: " urls... 
    (unlimited depth... this should be fixed)
  * Put HISTORY in a separate file, not in README anymore.

0.0.12 (24 Mar 1999)
  * Adding "src=" stuff to the recursion routine.

0.0.13 (26 Mar 1999)
  * Recurses into "htm" documents as well as "html".
  * Recurses into anything with "Content-Type: text/html".
  * Adding -g and -G flags to allow urls with ? and @ signs
    (but they might not work as they should???)
  * Freshened up the syntax (-h text).

0.0.14 (1 Apr 1999)
  * Adding the LICENSE file.

0.0.15 (12 Apr 1999)
  * Removed a bug which caused www.microsoft.com 
    (among others) to bug out because of very long URLs.

0.0.16 (22 Apr 1999)
  * Adding "Referer: " stuff. 
  * Prepared for adding "Range: " and "Content-Range: " stuff...

0.0.17 (4 May 1999)
  * Fixing freopen() segfaults.
  * Adding -K option for "fake" hostnames.
  * Adding -a and -A options for userdefined User-Agent stuff

0.0.18 (19 Sep 1999)
  * Wrote a lots of stuff into the TODO file, in preparation for 
    the 0.1.x series.
  * Agent-string is now "OS/hardware version" instead of "OS version hardware".

0.0.19 (24 Sep 1999)
  * Changing // comments into /* */. Trying to port to SunOS 
    by using cc instead of gcc.
  * Created a homepage on the web for gaforzia.

0.1.0 (25 Sep 1999)
  * Beginning total code audit.
    Not rewriting, just going through everything I've written so far.
  * Refreshing LICENSE.
  * Refreshing main.c (previously gaforzia.c).
  * Fixing bugs in getopts.c.
  * Shows warning if run as uid 0 (root).
  * Created a man page, gaforzia(1).
  * Shows advanced help if -ha is specified on command line.
  * Added "connection reactance", the -k option.

0.1.1 (26 Sep 1999)
  * Renamed the program to 'puf' (old name was 'gaforzia',
    which no one probably knows what it means anyway).

0.1.2 (1 Apr 2000)
  * Applying patches for http user authentication and some other things 
    from Oswald Buddenhagen <ob6@inf.tu-dresden.de>
  * Translated TODO from Swedish to English.

0.1.4 (16 Jul 2000)
  * Two large patches (0.1.2 -> 0.1.3, and then -> 0.1.4) by
    Oswald Buddenhagen. Here are his comments (0.1.2 -> 0.1.3):
    - done some items from the todo list
    - optimized some string handling code
    - converted the whole getopts.c to use getopt(). 
      it makes the code much more readable.
      the help screen concept changed a bit, too.
    - fixed/enhanced url handling/comparison
    - cleaned up the debugging messages concept. 
      now a debug() function with a variable parameter list is called 
      everywhere.  same for critical error exits (function die()).
    And the 0.1.3 -> 0.1.4 changes:
    - implemented the "recurse while fetching" feature
      -> partly rewritten recurse.c
    - completely rewritten handle_databuf.c
    - changed method of byte counter statistics computation
    - added -i option to specify the name of anonymous index files. 
      default is not .fetched_index.html anymore, but index.html
    - removed unnecessary stuff from agtcp; replaced calls to
      trivial functions with native calls
    - again improved the debugging message handling. with gnu compilers 
      debug() is a macro. this is faster than a function call.
    - with -v the normal output is disabled, as it only makes the
      debug messages even harder to read.
    - moved all "extern" declarations from the c-files to global.h
  * Finnished the "continue download" mechanism.