CacheManager error : "Wrong owner. Perhaps a late disconnect"

[PaoloDozio]

Issue Type

[ ] Question
[X] Bug
[ ] Improvement
[ ] Build system related
[ ] Performance
[ ] Documentation

Description and/or steps/code to reproduce the problem

I used in the previous version the CacheManager, but now, when I try to download the tiles with the function

mOSMCacheManager.downloadAreaAsync

I receive this message

W/OsmDroid: Problem downloading MapTile: /z/y/x HTTP response:
I/System.out: Wrong owner. Perhaps a late disconnect

I don't understand where I wrong...

Environment

If it's a bug, version(s) of android this affects:

All

Version of osmdroid the issue relates to:

Tested on 6.1.0 and 6.0.3

[spyhunter99]

what tile source is this?

[PaoloDozio]

I tried with OSM Mapnik OSM HikeBike 4uMaps.eu OSM OpenTopo Same error for every tile source..

…

On Sat, Apr 13, 2019 at 4:57 PM spyhunter99 ***@***.***> wrote: what tile source is this? — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <#1316 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AsVMoOyv4mHsb0iZLIChvo5nNPAcS-2Rks5vgfBzgaJpZM4cuEiv> .

[PaoloDozio]

The complete error is this..

I/OsmDroid: Http redirect for MapTile: /12/2145/1462 HTTP response: Found to url https://tiles.wmflabs.org/hikebike/12/2145/1462.png
I/System.out: [OkHttp] sendRequest>>
[OkHttp] sendRequest<<
W/OsmDroid: Problem downloading MapTile: /17/68755/46714 HTTP response:
I/System.out: Wrong owner. Perhaps a late disconnect

And it happens for all the tiles to download..

[spyhunter99]

no idea, maybe it's related to http user agent header?

[monsieurtanuki]

@PaoloDozio Regarding HikeBikeMap, what I can say is that the "http://{a|b|c}.tiles." doesn't seem to work anymore, and that it's redirected to "https://tiles."
On my smartphone, the old http URLs work OK when accessed through the web or through the demo app "in live mode" (didn't try in cache mode, as the demo app sample doesn't let us change the tile source for the cache)

Could you try again with a custom made tile source:

final OnlineTileSourceBase myHIKEBIKEMAP = new XYTileSource("MyHikeBikeMap",
	0, 18, 256, ".png", new String[] { "https://tiles.wmflabs.org/hikebike/"});

I don't know, maybe something is lost in the redirection.

Why would it work in "live" but not in "cache" mode? There seems to be little differences:

• in "live" mode, we manage a semaphore in order to limit the concurrent access to the tile source
• in "cache" mode we don't use the semaphore, but we download the tiles one by one

Btw, do you use the default TileDownloader for the CacheManager: you don't use CacheManager.setTileDownloader, do you?

[PaoloDozio]

I have the download error if I do this mMapOSM.setTileSource(TileSourceFactory.USGS_TOPO); mOSMCacheManager = new CacheManager(mMapOSM); ..... // Change the tile source mMapOSM.setTileSource(TileSourceFactory.HIKEBIKEMAP); .... mOSMCacheManager.downloadAreaAsync(.....) If I do this, it works mMapOSM.setTileSource(TileSourceFactory.HIKEBIKEMAP); mOSMCacheManager = new CacheManager(mMapOSM); mOSMCacheManager.downloadAreaAsync(.....); but when I do this, it crashes mMapOSM.setTileSource(TileSourceFactory.MAPNIK); mOSMCacheManager = new CacheManager(mMapOSM); mOSMCacheManager.downloadAreaAsync(.....); The Execption message is "This online tile source doesn't support bulk download" If think the problem was due to when I change the tile source, I need to recreate the CacheManager object. I thought that the tileSource was get from the map and not during the creation of the ChaceManager Object...

…

On Sat, Apr 13, 2019 at 7:32 PM monsieurtanuki ***@***.***> wrote: @PaoloDozio Regarding HikeBikeMap, what I can say is that the "http://{a|b|c}.tiles." doesn't seem to work anymore, and that it's redirected to "https://tiles." On my smartphone, the old http URLs work OK when accessed through the web or through the demo app "in live mode" (didn't try in cache mode, as the demo app sample doesn't let us change the tile source for the cache) Could you try again with a custom made tile source: final OnlineTileSourceBase myHIKEBIKEMAP = new XYTileSource("MyHikeBikeMap", 0, 18, 256, ".png", new String[] { "https://tiles.wmflabs.org/hikebike/"}); I don't know, maybe something is lost in the redirection. Why would it work in "live" but not in "cache" mode? There seems to be little differences: in "live" mode, we manage a semaphore in order to limit the concurrent access to the tile source in "cache" mode we don't use the semaphore, but we download the tiles one by one Btw, do you use the default TileDownloader for the CacheManager: you don't use CacheManager.setTileDownloader, do you? — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub, or mute the thread.

[monsieurtanuki]

@PaoloDozio For MAPNIK, OSM admin guys recently asked us to forbid the bulk downloads (#1286). Their servers were too heavily impacted. That's why you get the explicit message "This online tile source doesn't support bulk download".

I noticed a small slightly unrelated bug in CacheManager; I'm about to PR.

Assuming that your tests are correct (meaning "if you don't change the MapView's tile source after you create the CacheManager then everything is fine") and if we go a bit beyond, we should put in the todo-list:

• either change a bit the wiki or change the CacheManager concept
• change the demo app samples dedicated to CacheManager tests, so that we can test with different sources
• apply the same restrictions for the bulk download and the live download regarding the number of concurrent processes

[PaoloDozio]

Ok, thanks you.. In my App I have only one instance of cache manager and I create it after creating the OSM map instance.. Then the user can change the tile provider, but the instance of cache manager remain the same.. The strange thing is that when the user change the tile provider, the number of tiles to download changes correctly, but when I start to download, every tile download is in error.. I changed my code moving the creation of the instance of cache manager after selecting the new tile provider.. Maybe only adding the function SetTileProvider also for the instance of the cache manager should solve my issue.. or leave as it is.. the change of my code makes sense.. Thanks for your fast support..

…

On Sun, 14 Apr 2019, 17:23 monsieurtanuki, ***@***.***> wrote: @PaoloDozio <https://github.com/PaoloDozio> For MAPNIK, OSM admin guys recently asked us to forbid the bulk downloads (#1286 <#1286>). Their servers were too heavily impacted. That's why you get the explicit message "This online tile source doesn't support bulk download". I noticed a small slightly unrelated bug in CacheManager; I'm about to PR. Assuming that your tests are correct (meaning "if you don't change the MapView's tile source after you create the CacheManager then everything is fine") and if we go a bit beyond, we should put in the todo-list: - either change a bit the wiki or change the CacheManager concept - change the demo app samples dedicated to CacheManager tests, so that we can test with different sources - apply the same restrictions for the bulk download and the live download regarding the number of concurrent processes — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#1316 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AsVMoGB2BAiWCKFoyKNS5hL1or8FUcMJks5vg0fZgaJpZM4cuEiv> .