missing bounding boxes in wms getcapabilities

[porath@…]

When offering several spatial reference systems in a mapfile by e.g. using:

"wms_srs" "EPSG:31467 EPSG:31466 EPSG:31468 EPSG:31469 EPSG:25832 EPSG:4326"

bounding box tags for each spatial reference system are missing for at least the root layer in the corresponding wms getcapabilities.

Although this is an optional tag regarding to the wms specification, it should be possible to generate these bounding boxes in the capabilities with mapserver. WMS Clients sometimes use them.

[tomkralidis]

is this still a desired enhancement? I can look into this...

[dmorissette]

Do we really want/need this? Imagine for instance a server which advertizes 50 SRS and contains 50 layers... thbose are fairly low numbers for WMS services but would result in 2500 bbox entries, most of them possibly invalid because the bbox is outside the projections' mathematical limits and the reprojection of the bbox results in invalid values.

If you do this then that should be done in a smart way to avoid unnecessarily bloating the Capabilities output, either generate bboxes only for some selected SRS (listed in a new metadata entry), or there should be some limit to the number of bboxes that are generated, or make this disabled by default, or ???

[tomkralidis]

Replying to dmorissette:

Do we really want/need this? Imagine for instance a server which advertizes 50 SRS and contains 50 layers... thbose are fairly low numbers for WMS services but would result in 2500 bbox entries, most of them possibly invalid because the bbox is outside the projections' mathematical limits and the reprojection of the bbox results in invalid values.

If you do this then that should be done in a smart way to avoid unnecessarily bloating the Capabilities output, either generate bboxes only for some selected SRS (listed in a new metadata entry), or there should be some limit to the number of bboxes that are generated, or make this disabled by default, or ???

Daniel: I wouldn't see this as a big need, but that's just me. I would say we close unless there is specific demand (and update to this 2 year old ticket).

[dmorissette]

Closing WONFIX. We can always reopen if there is enough demand.

[schpidi]

This is added using the metadata flag "wms_bbox_extened" in MapServer 6.0 (see #3602).