Re: setting proxy host and port in matlab/java

Hi all:

According to  address@hidden, setting the following 
System properties (eg on the java command line) will allow a proxy to work:

   String proxyHost = System.getProperty("http.proxyHost");
   String proxyPort = System.getProperty("http.proxyPort");
   if ((proxyHost != null) && (proxyPort != null)) {
       _client.getHostConfiguration().setProxy(proxyHost, 
Integer.parseInt(proxyPort));

the above lines of code are in ucar.nc2.util.net.HttpClientManager which 
is our interface to org.apache.commons.httpclient, used by the DConnect2 
opendap client.

I havent made this work myself, although nick said it worked for him. 
Since you are having trouble with those settings, I am cc'ing him in 
case he can help.


James Gallagher wrote:
> On Jan 11, 2010, at 3:00 PM, Tim Pugh wrote:
>
> > Hi James,
> >
> > I'm having an issue with MATLAB and SNCTOOLS not retrieving data from 
> > opendap servers when a proxy server is used.   Am I setting up MATLAB 
> > and Java tools correctly to talk with the proxy server?  See my 
> > message below to John.
> >
> > Any help would be appreciated.
>
> Tim, the key is to set up proxy support with the opendap-java code. I 
> don't know if such support exists.
>
> John?
>
> James
> >   - Tim -
> >
> >
> > Begin forwarded message:
> >
> > > *From: *John Evans <address@hidden 
> > > <mailto:address@hidden>>
> > > *Date: *12 January 2010 5:45:02 AM
> > > *To: *Tim Pugh <address@hidden <mailto:address@hidden>>
> > > *Subject: **Re: setting proxy host and port in matlab/java*
> > >
> > > Hi Tim,
> > >
> > > To be honest, no, I've not tried to do such a thing before.  I'll 
> > > look into it, but I'm not hopeful of coming up with anything useful.
> > >
> > >
> > > On Mon, Jan 11, 2010 at 12:09 PM, Tim Pugh <address@hidden 
> > > <mailto:address@hidden>> wrote:
> > >
> > >     Hi John,
> > >
> > >     I'm trying to set a proxy host and port for matlab 2008b and
> > >     SNCTOOLS.  I've verified that the installation works when the
> > >     proxy server is turned off, but it fails when the proxy server
> > >     is turned on.
> > >
> > >     So I've tried to set the proxy host and port in Matlab
> > >     preferences, no change, software fails to make connection with
> > >     THREDDS server.  I've tried to set the
> > >     java.lang.System.setProperties('http.proxyHost','<http://proxyhostname>')
> > >     and the
> > >     java.lang.System.setProperties('http.proxyPort','<portNumber>'),
> > >     but that fails too.
> > >
> > >     I can reach the THREDDS site with a web browser, but not with
> > >     the Matlab and toolbox.  Yes the web browser has the proxy
> > >     server correctly set, but the matlab/toolbox/java software fails
> > >     to complete a request until it timeout.  It seems like MATLAB or
> > >     java is not talking to the proxy server.
> > >
> > >     Can you shed any light or help on solving the proxy server problem?
> > >
> > >     Regards,
> > >
> > >      - Tim Pugh -
> > >
> > >
> > >
> > >
> > > --
> > > John Evans
>
> --
> James Gallagher
> jgallagher at opendap.org
> 406.723.8663