Last Updated: 07 Feb 2020 16:13 by ADMIN
Release R1 2020
Created on: 07 Jan 2020 16:50
Category: Map
Type: Bug Report
Map: OpenStreetMap provider does not follow the latest OpenStreetMap tile usage policy requiring UserAgent header.

Recently OpenStreetMap changed their tile usage policy and require UserAgent string in the web headers for accessing tiles.

As a result, standard open street map mode does not work - no tiles are loaded and "too many requests" error is returned from the server.

RadMap's OpenStreetMapProvider needs API (event, property or similar) for easier set up of UserAgent / Referer / other headers of web requests.

Currently, the workaround is to override the OpenStreetMapProvider like so:

    public class CustomOpenStreetProvider : OpenStreetMapProvider
        public CustomOpenStreetProvider()
            OpenStreetMapnikSource osmMapInkSource = this.MapSources.Values.ToList()[0] as OpenStreetMapnikSource;
            if (osmMapInkSource != null)
                osmMapInkSource.WebHeaders.Add(System.Net.HttpRequestHeader.UserAgent, "your custom user agent string");
Petar Mladenov
Posted on: 07 Feb 2020 16:13

Hi Jan,

We have contacted the OpenStreetMaps development team on this question - service gets slower when user-agent is provided but unfortunately we do not have an answer. If performance is critical to some users, we suggest using a other mode which does not require user agent or other map provider.

Petar Mladenov
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Jan Heiko Houtrouw
Posted on: 05 Feb 2020 14:36
With Release R1 2020 the Map using the Open Street Map Provider still performs very slowly ...
Posted on: 09 Jan 2020 14:49
In R1 2020, we will add StandardModeUserAgent property to OpenStreetMapProvider for easier setup.