[patch] use HTTP caches for WMS imagery

[wiktorn]

What steps will reproduce the problem?

1. Add WMS layer
2. Check Cache-Control and Pragma HTTP headers for WMS requests

What is the expected result?

If it is possible, use external caches for WMS layers

What happens instead?

Cache-control: no-cache and Pragma: no-cache headers are sent.

Please provide any additional information below. Attach a screenshot if possible.

Revision: 7643
Repository Root: http://josm.openstreetmap.de/svn
Relative URL: ^/trunk
Last Changed Author: Don-vip
Last Changed Date: 2014-10-21 21:19:16 +0200 (Tue, 21 Oct 2014)
Build-Date: 2014-10-21 19:23:06
URL: http://josm.openstreetmap.de/svn/trunk
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last Changed Rev: 7643

Identification: JOSM/1.5 (7643 en) Windows 7 64-Bit
Memory Usage: 99 MB / 3068 MB (9 MB allocated, but free)
Java version: 1.8.0_25, Oracle Corporation, Java HotSpot(TM) 64-Bit Server VM
VM arguments: [-Djava.security.manager, -Djava.util.Arrays.useLegacyMergeSort=true, -Djnlpx.vmargs=LVhYOitVc2VHMUdDAC1EamF2YS51dGlsLkFycmF5cy51c2VMZWdhY3lNZXJnZVNvcnQ9dHJ1ZQA=, -Djnlpx.jvm=<java.home>\bin\javaw.exe, -Djnlpx.splashport=51830, -Djnlpx.home=<java.home>\bin, -Djnlpx.remove=false, -Djnlpx.offline=false, -Djnlpx.relaunch=true, -Djnlpx.session.data=C:\Users\w\AppData\Local\Temp\session7791484715169129261, -Djnlpx.heapsize=NULL,NULL, -Djava.security.policy=file:C:\Program Files\Java\jre1.8.0_25\lib\security\javaws.policy, -DtrustProxy=true]
Dataset consistency test: No problems found

Plugins:
- geotools (30762)
- jts (30762)
- opendata (30762)
- photo_geotagging (30762)
- utilsplugin2 (30762)

Last errors/warnings:
- E: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out
- E: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out
- E: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out
- E: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out
- E: java.net.SocketTimeoutException: Read timed out. Cause: java.net.SocketTimeoutException: Read timed out

[wiktorn]

Patch to cache WMS tiles

[bastiK]

Are you sure? Java documentation says this is already the default value, so you don't have to set it to true.

[wiktorn]

org.openstreetmap.josm.tools.Utils.java:657 invokes:

connection.setUseCaches(false)

I guess that it's not without a reason (probably not to cache OSM API invocations), so I decided to put it here

[Don-vip]

In 7659/josm:

fix #10673 - use HTTP cache for WMS imagery (patch by wiktorn)

[Don-vip]

thanks for the patch! :)