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Date:Mon Jun 12 10:00:19 2001 
Subject:Re: sys_open_url and proxies 
From:Anthony Worrall (ISG) 
Volume-ID:1010612.01 

If I can follow-up my own message I have also discovered that
sys_open_url does not support the use of passive ftp which
we need here as our firewall does not allow incoming connections.

I have modified the code so it will use passive ftp if the global
variable FTP_USE_PASV is true.

The question is is this a good way to control the ftp protocol or
should there be an optional argument to sys_open_url which has
flags for the particular protocol?


"Anthony Worrall (ISG)" wrote:

> Hi
>
> In version 15.53 the is a new procedure showlib * sys_open_url
> The will open files using ftp or http protocols. There is also the ved
> command ved_ftp to open a file using ftp in a ved buffer.
>
> I have written a ved_http command along the same lines as
> ved_ftp. However here at the University access to external
> http servers has to go via the Universities proxy server.
>
> Before I start rewriting the code has anyone got sys_open_url to
> work with http proxies or indeed know the commands I need to
> use to authenticate with the proxy. The HTTP specification
> did not seem to have this information ;-(.
>
> --
> Anthony Worrall
> School IT Networking Coordinator
> The University of Reading,
> School of Computer Science, Cybernetics and Electronic Engineering
> Department of Computer Science,
> Whiteknights, PO Box 225
> Reading,
> Berkshire, UK
> RG6 6AY
> Tel:   +44 (0)1189 318610
> Fax:   +44 (0)1189 751994
> Email: Anthony.Worrall@Reading.ac.uk

--
Anthony Worrall
School IT Networking Coordinator
The University of Reading,
School of Computer Science, Cybernetics and Electronic Engineering
Department of Computer Science,
Whiteknights, PO Box 225
Reading,
Berkshire, UK
RG6 6AY
Tel:   +44 (0)1189 318610
Fax:   +44 (0)1189 751994
Email: Anthony.Worrall@Reading.ac.uk