A new release of nsvhr and nsunix can be found at
http://www.theashergroup.com/download/.

This release of nsvhr and nsunix contains the following new features:

   fixing of several memory leaks within the nsunix module
   use of nssock's output routine within the nsunix module
   new command, ns_vhr, to examine, start, stop proxy
      activity at runtime.
   new menuUrl behavior: requests to hosts that are not
      found are redirected to the menuUrl
   new menuUrl and errorUrl behavior: when redirected to
      these urls, a host parameter and error information
      is passed as query parameters

   improved support for HTTP/1.0 clients: Specifically, the "location"
      parameter can now contain information regarding both nsunix and
      nssock connections, so that HTTP/1.0 clients
      can be presented a menu that contains
      appropriate direct PORT connections.




Syntax

This release introduces the nsvhr command that can be used to
examine, start, and stop nsvhr redirection at runtime.

ns_vhr

Overview

Find out information about an ns_vhr configuration,
and/or start/top/modify a particular ns_vhr host.



Syntax

ns_vhr names ?pattern

ns_vhr get ?pattern

ns_vhr delete host

ns_vhr update host location

Description

ns_vhr names ?pattern  similar to array names,
returns the names
(keys) of the hosts that are being proxied.  If pattern is given, the
host must match the pattern.

ns_vhr get ?pattern similar to array get returns the
names and
locations of the hosts that are being proxied.  If pattern is given,
the hosts must match the pattern.

ns_vhr delete ?host deletes a host from the proxying list.
Requests for that host will not be proxied, but will be redirected to
the errorUrl or menuUrl.

ns_vhr update ?host ?location updates (or adds) the host to
the proxying list.  Requests for that host will be proxied to the
appropriate location.


Known Issues


The AOLserver implementation of nssock uses an internal buffer to help make
network reads more efficient.  Nsvhr needs to read the bytes out of this
buffer in order to pass those bytes on to the nsunix module.  This
implementation of nsvhr adds a new socket layer communication procedure:
ioctlProc, which has been implemented within nssock to both return the
number of bytes in the internal buffer that can be read without requiring a
new network read, and to close a socket immediately and not use the standard
nssock graceful close procedures.

What does this mean?  The communication driver structure increased in size,
with the new slot (at the end of the structure) being used to hold the
driver ioctl proc. While it is probably safe to use an AOLserver with these
patches with older modules, it is certainly the case that it is safer, to
recompile all modules when using them within an AOLserver containing these
patches.

=====================================================
Jerry Asher                       [EMAIL PROTECTED]
1678 Shattuck Avenue Suite 161    Tel: (510) 549-2980
Berkeley, CA 94709                Fax: (877) 311-8688

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