Copyright distributed.net 1997 - All Rights Reserved
For use in distributed.net projects only.
Any other distribution or use of this program violates copyright.

Use of this client or it variants implies agreement with
the prize terms listed on http://www.distributed.net/rc5/

See http://www.distributed.net/rc5/FAQ/rc5v2-help.html
for more information and instructions on running this software.

Note: 2.6401 will not work with any legacy proxy/personal proxy
      releases.

Important: Starting with 2.6401 it is standard that you
           configure the client to use your own, personal
           email address regardless of your team affiliation.

           Teams will be handled very differently with the
           RC5-64 attack.

2.6401
------
* note that 2.6401 clients were released with various combinations
  of these changes.
97.10.29 Combined win32 console and win95 hidden clients into one
         Added "-hide" option for win95.  INI setting: "win95hidden=1"
         No longer appears in task list when hidden
97.10.28 Added support for other items in the INI file.
         "runoffline=1", "runbuffers=1", "in=filename", "out=filename",
         "percentoff=1", "frequent=1", "nofallback=1", "quiet=1",
         "nodisk=1", "cktime=nnn"
97.10.28 Fixed mail bug.  No mail was sent when logging was off
97.10.28 Client will now quit when 'exitrc5.now' file is found
97.10.28 Fixed -runbuffers problem
97.10.27 Changed default directory for buffers to be same as executable
97.10.27 Added -quiet option
97.10.27 Added shutdown mechanism to clients
97.10.27 Removed 'sleep' in network routines
97.10.26 Update is forced when user types "U", exit on "X" (win32 os2 dos)
97.10.25 Amiga/m68k port made
97.10.25 Fixed "-out" and "-l"
97.10.22 modified to attack RC5-32/12/8 (64-bit)

2.0051
------
97.10.10 x86 Cores multithread-safe
97.10.10 New K6 core
97.10.10 Ability to set input/output thresholds independently
97.10.10 Email id added to logs and mail subject line
97.10.10 Fixed overlapping % meters at startup with partially done blocks
97.10.10 niceness 0 is now even lower priority in Win32 version
97.10.9 Added -nodisk and -forceunlock options
97.10.9 Fixed http proxy userid/password encoding (hopefully)

2.005
------------------
97.10.5 Added support for userid/password http proxy firewalls
97.10.4 Multithreading extended to unix clients using pthreads
97.10.1 Added -frequent option to make best use of intermittent connections.
97.9.29 Checkpointing added (5 minute intervals)
97.9.25 Windows multithreaded client
97.9.25 Divide by zero problem fixed (blocks ending in 0000001)
97.9.23 Corrections to speed calculations throughout
97.9.19 Whenever network access is required, both a fetch & flush occur,
        This should synchronize/minimize network connections.
97.9.18 Added mailing of logs
97.9.17 "Network::" errors no longer logged to disk
97.9.17 Added -ini, -in, and -out command line overrides
97.9.11 'Total completed' information added to logs
97.9.10 Added command line options for all current INI file settings
97.9.10 Added command line options -benchmark2, -runoffline, -runbuffers

v2 Build 4 (2.004)
------------------
problems with -update resolved
automatic core selection added to Win32 & OS/2 clients
problems with automatically fetching new blocks resolved


v2 Build 3 (2.003)
------------------
new, faster checking cores for more processors
changes in networking code to allow for more http proxy support
preferred keyserver can now be specified when doing http
network timeouts increased
improved block buffering code
maximum block count increased
buffer files explictly placed in exe directory on win32



v2 Build 2 (2.002)
------------------
shadow count variable
hour timout saves work
timing output problem
*break* text in win32
help message fixed
fetch and flush counts return
flush core dump fixed
fclose in Ini


v2 Build 1 (2.001)
------------------
OS/CPU additions to cputypes.h
partial block restart notify (the R)
break works during -test
buffer lock timeout fixed
default email now rc5@distributed.net
-update option = fetch+flush
rename files to be 8.3 filename compliant
zero extra email to help email mangling problem
strncpy lengths fixed to insure terminated strings
ini file location specification via RC5INI environment variable
random keys if client can't connect
partial block rates are now correct
time in hh:mm:ss
fseeks() for ANSI compliance
flush checks count before opening connection
negative run times fixed
buffer count reporting
times in benchmark also fixed
3 nice levels
logging to file
error messages more clear
new autobuff and iniread code - memory leak fixed
new faster ANSI C and ASM cores
httpd fixed - checked under CERN and WinProxy
proxy hunting now works