Seeing this twice makes me think that indeed tomcat has changed its
behavior.
Isn't the saying "twice is enemy action..."?
The alternative, I think, is to change the opendap .html response to
use the % encoded form
for '[' and ']' when it constructs requests. WIll ncss have same problem?
In any case,I do not know if changing the .html response would cause
trouble when using
older versions of tomcat that by default allow [].
=Dennis Heimbigner
Unidata
On 7/30/2018 4:36 PM, Sean Arms wrote:
Greetings Roy!
Thank you for your report! We had a user contact us last week thorough
our support channel who was having an issue with OPeNDAP requests not
working, due to [ and ], much like you report. This user found the
following tweak to Tomcat's server.xml that fixed the problem
(specifically, the relaxedQueryChars attribute):
<Connector port="8080" protocol="HTTP/1.1"
connectionTimeout="20000"
redirectPort="8443" relaxedQueryChars="[]" />
The initial thought was that this was something particular to their
server, but I think your correct in that it's a change in how tomcat
handles these characters. The user who emailed us didn't include the
version of Tomcat they were using, so I'm not 100% sure, but this sure
sounds like the issue.
What I don't know yet is if this must be configured at a level above
the TDS (like tomcat's server.xml), or if this something we could
address in the TDS codebase (in a servlet container agnostic way).
In your case, if you try the request but encode the square brackets by
hand using %5B for '[' and %5D for ']', does the query work?
Thank you again!
Sean
On Mon, Jul 30, 2018 at 12:58 PM Roy Mendelssohn - NOAA Federal
<roy.mendelssohn@xxxxxxxx <mailto:roy.mendelssohn@xxxxxxxx>> wrote:
Hi All:
Something we discovered is that Tomcat has made some changes in
how it deals with percent encoding, and it appears to not work
with the TDS5 Beta2 release. If I run in Tomcat 8.5.14, using the
default TDS settings that are installed if nothing else is there,
if I go to:
http://localhost:8080/thredds/dodsC/testAll/2004050312_eta_211.nc.html
select datetime and asked for ASCII, it works.
If I do the exact same thing with Tomcat 8.5.32, I get a blank
page. From looking at the Tomcat changelogs, I think there may
have been a change at 8.5.15. It appears to be something to do
with the handling of '[' and ']'.
HTH,
-Roy
**********************
"The contents of this message do not reflect any position of the
U.S. Government or NOAA."
**********************
Roy Mendelssohn
Supervisory Operations Research Analyst
NOAA/NMFS
Environmental Research Division
Southwest Fisheries Science Center
***Note new street address***
110 McAllister Way
Santa Cruz, CA 95060
Phone: (831)-420-3666
Fax: (831) 420-3980
e-mail: Roy.Mendelssohn@xxxxxxxx <mailto:Roy.Mendelssohn@xxxxxxxx>
www: http://www.pfeg.noaa.gov/
"Old age and treachery will overcome youth and skill."
"From those who have been given much, much will be expected"
"the arc of the moral universe is long, but it bends toward
justice" -MLK Jr.
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