UnauthorizedException in auto-detection when using Basic Auth reverse proxy

NIPE-SYSTEMS

Hi,

I’m using Radicale as CalDAV/CardDAV server behind a reverse proxy which is setup according to this documentation: The whole Radicale server is protected via Basic authentication by the reverse proxy (this includes auto-detection URLs). The auto-detection fails with at.bitfire.dav4jvm.exception.UnauthorizedException because it seems that it does not use the provided authentication (username + password) for the account.

Is there a way to get my setup work?

Thanks!

More details:

curl without authentication:

$ curl -v https://________.____________.de
> GET / HTTP/2
> Host: ________.____________.de
> User-Agent: curl/7.65.3
> Accept: */*
> 
< HTTP/2 401 
< server: openresty/1.15.8.1
< date: Mon, 26 Aug 2019 07:55:47 GMT
< content-type: text/html
< content-length: 185
< www-authenticate: Basic realm=""
< strict-transport-security: max-age=15724800; includeSubDomains
< 
<html>
<head><title>401 Authorization Required</title></head>
<body>
<center><h1>401 Authorization Required</h1></center>
<hr><center>openresty/1.15.8.1</center>
</body>
</html>

curl with authentication:

$ curl -v -u '_______:__________________________' https://________.____________.de
> GET / HTTP/2
> Host: ________.____________.de
> Authorization: Basic ___________________________________________
> User-Agent: curl/7.65.3
> Accept: */*
> 
< HTTP/2 302 
< server: openresty/1.15.8.1
< date: Mon, 26 Aug 2019 07:30:40 GMT
< content-type: text/plain; charset=utf-8
< content-length: 18
< location: .web
< strict-transport-security: max-age=15724800; includeSubDomains
< 
Redirected to .web

DAVx5 logs:

--- BEGIN DEBUG INFO ---

LOGS:
2019-08-26 09:01:29 73578 [ui.setup.DavResourceFinder] Finding initial carddav service configuration
2019-08-26 09:01:29 73578 [ui.setup.DavResourceFinder] Checking user-given URL: https://________.____________.de/
2019-08-26 09:01:29 73578 [HttpClient] --> PROPFIND https://________.____________.de/
2019-08-26 09:01:29 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:29 73578 [HttpClient] Content-Length: 290
2019-08-26 09:01:29 73578 [HttpClient] Depth: 0
2019-08-26 09:01:29 73578 [HttpClient] 
2019-08-26 09:01:29 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><resourcetype /><displayname /><CARD:addressbook-description /><CARD:addressbook-home-set /><current-user-principal /></prop></propfind>
2019-08-26 09:01:29 73578 [HttpClient] --> END PROPFIND (290-byte body)
2019-08-26 09:01:30 73578 [HttpClient] <-- 401 https://________.____________.de/ (843ms)
2019-08-26 09:01:30 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:30 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:27 GMT
2019-08-26 09:01:30 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:30 73578 [HttpClient] www-authenticate: Basic realm="Radicale - Password Required"
2019-08-26 09:01:30 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:30 73578 [HttpClient] 
2019-08-26 09:01:30 73578 [HttpClient] Access to the requested resource forbidden.
2019-08-26 09:01:30 73578 [HttpClient] <-- END HTTP (43-byte body)
2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] PROPFIND/OPTIONS on user-given URL failed
EXCEPTION at.bitfire.dav4jvm.exception.UnauthorizedException: HTTP 401 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:352)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.checkUserGivenURL(DavResourceFinder.kt:180)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:115)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:73)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:30 73578 [HttpClient] --> PROPFIND https://________.____________.de/.well-known/carddav
2019-08-26 09:01:30 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:30 73578 [HttpClient] Content-Length: 198
2019-08-26 09:01:30 73578 [HttpClient] Depth: 0
2019-08-26 09:01:30 73578 [HttpClient] 
2019-08-26 09:01:30 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2019-08-26 09:01:30 73578 [HttpClient] --> END PROPFIND (198-byte body)
2019-08-26 09:01:30 73578 [HttpClient] <-- 404 https://________.____________.de/.well-known/carddav (71ms)
2019-08-26 09:01:30 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:30 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:27 GMT
2019-08-26 09:01:30 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:30 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:30 73578 [HttpClient] 
2019-08-26 09:01:30 73578 [HttpClient] The requested resource could not be found.
2019-08-26 09:01:30 73578 [HttpClient] <-- END HTTP (42-byte body)
2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] Well-known URL detection failed
EXCEPTION at.bitfire.dav4jvm.exception.NotFoundException: HTTP 404 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:356)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.kt:385)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:119)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:73)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] No principal found at user-given URL, trying to discover
2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] Looking up SRV records for _carddavs._tcp.________.____________.de
2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] Didn't find carddav service, trying at https://________.____________.de:443
2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] Trying to determine principal from initial context path=https://________.____________.de/.well-known/carddav
2019-08-26 09:01:30 73578 [HttpClient] --> PROPFIND https://________.____________.de/.well-known/carddav
2019-08-26 09:01:30 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:30 73578 [HttpClient] Content-Length: 198
2019-08-26 09:01:30 73578 [HttpClient] Depth: 0
2019-08-26 09:01:30 73578 [HttpClient] 
2019-08-26 09:01:30 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2019-08-26 09:01:30 73578 [HttpClient] --> END PROPFIND (198-byte body)
2019-08-26 09:01:30 73578 [HttpClient] <-- 404 https://________.____________.de/.well-known/carddav (46ms)
2019-08-26 09:01:30 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:30 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:28 GMT
2019-08-26 09:01:30 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:30 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:30 73578 [HttpClient] 
2019-08-26 09:01:30 73578 [HttpClient] The requested resource could not be found.
2019-08-26 09:01:30 73578 [HttpClient] <-- END HTTP (42-byte body)
2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] No resource found
EXCEPTION at.bitfire.dav4jvm.exception.NotFoundException: HTTP 404 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:356)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.kt:385)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.discoverPrincipalUrl(DavResourceFinder.kt:365)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:138)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:73)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:30 73578 [ui.setup.DavResourceFinder] Trying to determine principal from initial context path=https://________.____________.de/
2019-08-26 09:01:30 73578 [HttpClient] --> PROPFIND https://________.____________.de/
2019-08-26 09:01:30 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:30 73578 [HttpClient] Content-Length: 198
2019-08-26 09:01:30 73578 [HttpClient] Depth: 0
2019-08-26 09:01:30 73578 [HttpClient] 
2019-08-26 09:01:30 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2019-08-26 09:01:30 73578 [HttpClient] --> END PROPFIND (198-byte body)
2019-08-26 09:01:31 73578 [HttpClient] <-- 401 https://________.____________.de/ (99ms)
2019-08-26 09:01:31 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:31 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:28 GMT
2019-08-26 09:01:31 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] www-authenticate: Basic realm="Radicale - Password Required"
2019-08-26 09:01:31 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] Access to the requested resource forbidden.
2019-08-26 09:01:31 73578 [HttpClient] <-- END HTTP (43-byte body)
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] No resource found
EXCEPTION at.bitfire.dav4jvm.exception.UnauthorizedException: HTTP 401 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:352)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.kt:385)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.discoverPrincipalUrl(DavResourceFinder.kt:365)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:138)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:73)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Finding initial caldav service configuration
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Checking user-given URL: https://________.____________.de/
2019-08-26 09:01:31 73578 [HttpClient] --> PROPFIND https://________.____________.de/
2019-08-26 09:01:31 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] Content-Length: 435
2019-08-26 09:01:31 73578 [HttpClient] Depth: 0
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><resourcetype /><displayname /><n0:calendar-color xmlns:n0="http://apple.com/ns/ical/" /><CAL:calendar-description /><CAL:calendar-timezone /><current-user-privilege-set /><CAL:supported-calendar-component-set /><CAL:calendar-home-set /><current-user-principal /></prop></propfind>
2019-08-26 09:01:31 73578 [HttpClient] --> END PROPFIND (435-byte body)
2019-08-26 09:01:31 73578 [HttpClient] <-- 401 https://________.____________.de/ (68ms)
2019-08-26 09:01:31 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:31 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:28 GMT
2019-08-26 09:01:31 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] www-authenticate: Basic realm="Radicale - Password Required"
2019-08-26 09:01:31 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] Access to the requested resource forbidden.
2019-08-26 09:01:31 73578 [HttpClient] <-- END HTTP (43-byte body)
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] PROPFIND/OPTIONS on user-given URL failed
EXCEPTION at.bitfire.dav4jvm.exception.UnauthorizedException: HTTP 401 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:352)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.checkUserGivenURL(DavResourceFinder.kt:189)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:115)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:80)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:31 73578 [HttpClient] --> PROPFIND https://________.____________.de/.well-known/caldav
2019-08-26 09:01:31 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] Content-Length: 198
2019-08-26 09:01:31 73578 [HttpClient] Depth: 0
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2019-08-26 09:01:31 73578 [HttpClient] --> END PROPFIND (198-byte body)
2019-08-26 09:01:31 73578 [HttpClient] <-- 404 https://________.____________.de/.well-known/caldav (179ms)
2019-08-26 09:01:31 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:31 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:28 GMT
2019-08-26 09:01:31 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] The requested resource could not be found.
2019-08-26 09:01:31 73578 [HttpClient] <-- END HTTP (42-byte body)
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Well-known URL detection failed
EXCEPTION at.bitfire.dav4jvm.exception.NotFoundException: HTTP 404 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:356)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.kt:385)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:119)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:80)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] No principal found at user-given URL, trying to discover
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Looking up SRV records for _caldavs._tcp.________.____________.de
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Didn't find caldav service, trying at https://________.____________.de:443
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Trying to determine principal from initial context path=https://________.____________.de/.well-known/caldav
2019-08-26 09:01:31 73578 [HttpClient] --> PROPFIND https://________.____________.de/.well-known/caldav
2019-08-26 09:01:31 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] Content-Length: 198
2019-08-26 09:01:31 73578 [HttpClient] Depth: 0
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2019-08-26 09:01:31 73578 [HttpClient] --> END PROPFIND (198-byte body)
2019-08-26 09:01:31 73578 [HttpClient] <-- 404 https://________.____________.de/.well-known/caldav (173ms)
2019-08-26 09:01:31 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:31 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:28 GMT
2019-08-26 09:01:31 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] The requested resource could not be found.
2019-08-26 09:01:31 73578 [HttpClient] <-- END HTTP (42-byte body)
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] No resource found
EXCEPTION at.bitfire.dav4jvm.exception.NotFoundException: HTTP 404 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:356)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.kt:385)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.discoverPrincipalUrl(DavResourceFinder.kt:365)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:138)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:80)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)

2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] Trying to determine principal from initial context path=https://________.____________.de/
2019-08-26 09:01:31 73578 [HttpClient] --> PROPFIND https://________.____________.de/
2019-08-26 09:01:31 73578 [HttpClient] Content-Type: application/xml; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] Content-Length: 198
2019-08-26 09:01:31 73578 [HttpClient] Depth: 0
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] <?xml version='1.0' encoding='UTF-8' ?><propfind xmlns="DAV:" xmlns:CAL="urn:ietf:params:xml:ns:caldav" xmlns:CARD="urn:ietf:params:xml:ns:carddav"><prop><current-user-principal /></prop></propfind>
2019-08-26 09:01:31 73578 [HttpClient] --> END PROPFIND (198-byte body)
2019-08-26 09:01:31 73578 [HttpClient] <-- 401 https://________.____________.de/ (55ms)
2019-08-26 09:01:31 73578 [HttpClient] server: openresty/1.15.8.1
2019-08-26 09:01:31 73578 [HttpClient] date: Mon, 26 Aug 2019 07:01:29 GMT
2019-08-26 09:01:31 73578 [HttpClient] content-type: text/plain; charset=utf-8
2019-08-26 09:01:31 73578 [HttpClient] www-authenticate: Basic realm="Radicale - Password Required"
2019-08-26 09:01:31 73578 [HttpClient] strict-transport-security: max-age=15724800; includeSubDomains
2019-08-26 09:01:31 73578 [HttpClient] 
2019-08-26 09:01:31 73578 [HttpClient] Access to the requested resource forbidden.
2019-08-26 09:01:31 73578 [HttpClient] <-- END HTTP (43-byte body)
2019-08-26 09:01:31 73578 [ui.setup.DavResourceFinder] No resource found
EXCEPTION at.bitfire.dav4jvm.exception.UnauthorizedException: HTTP 401 
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:352)
	at at.bitfire.dav4jvm.DavResource.checkStatus(DavResource.kt:338)
	at at.bitfire.dav4jvm.DavResource.processMultiStatus(DavResource.kt:432)
	at at.bitfire.dav4jvm.DavResource.propfind(DavResource.kt:325)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.getCurrentUserPrincipal(DavResourceFinder.kt:385)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.discoverPrincipalUrl(DavResourceFinder.kt:365)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:138)
	at at.bitfire.davdroid.ui.setup.DavResourceFinder.findInitialConfiguration(DavResourceFinder.kt:80)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:83)
	at at.bitfire.davdroid.ui.setup.DetectConfigurationFragment$DetectConfigurationModel$detectConfiguration$2.invoke(DetectConfigurationFragment.kt:62)
	at kotlin.concurrent.ThreadsKt$thread$thread$1.run(Thread.kt:30)



SOFTWARE INFORMATION
* at.bitfire.davdroid 2.5.4-ose (298) from com.google.android.packageinstaller
* com.android.providers.contacts 8.1.0 (27)
* com.android.providers.calendar 8.1.0 (27)
* com.google.android.contacts 3.7.7.260733580 (2243311) from com.android.vending
* com.google.android.calendar 6.0.44-261313226-release (2016267978) from com.android.vending
* ws.xsoh.etar 1.0.17 (19) from com.google.android.packageinstaller

CONNECTIVITY (at the moment)
Active connection: WiFi, CONNECTED

CONFIGURATION
Power saving disabled: yes
android.permission.READ_CONTACTS: granted
android.permission.WRITE_CONTACTS: granted
android.permission.READ_CALENDAR: granted
android.permission.WRITE_CALENDAR: granted
org.dmfs.permission.READ_TASKS: denied
org.dmfs.permission.WRITE_TASKS: denied
android.permission.ACCESS_COARSE_LOCATION: granted
System-wide synchronization: automatically
Account: _______@________.____________.de
  Address book sync. interval: 240 min
  Calendar     sync. interval: 240 min
  OpenTasks    sync. interval: —
  WiFi only: true, SSIDs: [TklQRQ==, TklQRS1sZWdhY3k=]
  [CardDAV] Contact group method: GROUP_VCARDS
  [CalDAV] Time range (past days): 90
           Manage calendar colors: true
           Use event colors: false
Address book account: Kontakte (_______@________.____________.de +A)
  Main account: Account {name=_______@________.____________.de, type=bitfire.at.davdroid}
  URL: http://______:5232/_______/88f47c0d-ee8c-44b1-a3db-5b70f1153712/
  Sync automatically: true

SQLITE DUMP
android_metadata
	|  locale |
	|  en_US |
----------
sqlite_sequence
	|  name | seq |
	|  service | 4 |
	|  homeset | 4 |
	|  collection | 8 |
----------
service
	|  id | accountName | type | principal |
	|  3 | _______@________.____________.de | carddav | http://______:5232/_______/ |
	|  4 | _______@________.____________.de | caldav | http://______:5232/_______/ |
----------
homeset
	|  id | serviceId | url | privBind | displayName |
	|  3 | 3 | http://______:5232/_______/ | 1 | <null> |
	|  4 | 4 | http://______:5232/_______/ | 1 | <null> |
----------
collection
	|  id | serviceId | type | url | privWriteContent | privUnbind | forceReadOnly | displayName | description | color | timezone | supportsVEVENT | supportsVTODO | supportsVJOURNAL | source | sync |
	|  7 | 3 | ADDRESS_BOOK | http://______:5232/_______/88f47c0d-ee8c-44b1-a3db-5b70f1153712/ | 1 | 1 | 0 | Kontakte | <null> | <null> | <null> | 0 | 0 | <null> | <null> | 1 |
	|  8 | 4 | CALENDAR | http://______:5232/_______/a32410fc-a6b2-4028-9b98-f9e7a33d98b4/ | 1 | 1 | 0 | Calendar | <null> | -37632 | <null> | 1 | 0 | <null> | <null> | 1 |
----------
room_master_table
	|  id | identity_hash |
	|  42 | a7554d1ebc5ecfe0c7aefe271485d63c |
----------

SYSTEM INFORMATION
Android version: 8.1.0 (OPM7.181205.001)
Device: LGE Nexus 5X (bullhead)

--- END DEBUG INFO ---

rfc2822

This configuration shouldn’t be a problem. Why do you think that no authentication is used, instead of user name/password are wrong? Does it work when you turn off Basic authentication in your proxy for testing purpose?

Otherwise, can you provide a test account so that I can have a look?

NIPE-SYSTEMS

Thanks for the quick answer!

While enabling debug logging in Radicale, I’ve noticed a misconfiguration in the authentication of Radicale, which causes the problems. After correcting the configuration (changed auth.type from none to http_x_remote_user) another test creating an account with DAVx5 succeeds.

Thanks for the great app!

rfc2822

@NIPE-SYSTEMS Thanks for the update!

UnauthorizedException in auto-detection when using Basic Auth reverse proxy

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