Yesterday it was
brought to our attention that certain ArcGIS 9.3.1 clients have been returning
error messages when trying to draw imagery from our web mapping services (WMS)
ever since the upgrade March 6.
We have researched
this issue and found a simple solution. The issue is actually a bug in the
way ArcGIS 9.3.1 makes WMS requests against certain server versions. In
our case it is trying to make a WMS 1.3.0 request against a server which is
running WMS 1.1.1. In 1.3 there are ways to handle 'exceptions' which did
not exist at 1.1.1, which causes the server to return an error
message. This problem is fixed in ArcGIS v10.
A simple workaround
in 9.3.1 is to specify the version explicitly as 1.1.1 when setting up your
WMS connection, and it will make the requests correctly.
At least one user
with AutoCAD 2010 reported the same error message (about 'exceptions', the
solution was to explicitly specify the version using VERSION=1.1.1& at the
end of the WMS URL. (That workaround will not work with
ArcGIS).
Bo
*****************
Michael Smith
State GIS Manager, Maine Office of GIS, Maine
OIT
Board Member, Maine
GeoLibrary
Board Member, Maine GIS
Users Group
State Rep, National
States Geographic Information Council
State House Station 174
264 Civic Center Drive
Augusta, ME 04333-0174
(207) 215-5530
69o
47' 49.5"W 44o 20'
54.5"N
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