Connection to WebDAV not working

The failure is a socket connect timeout on the initial OPTIONS request, which is logged from WebDavClient.kt:243 and passes through ConnectionHandlerHandlerImpl.kt:53 and WebDavImpl.kt:147. Start by reading the connection check in WebDavClient.kt and reproducing against a local WebDAV server, since the cause may be the user's network or server rather than the code. Done means the connection succeeds against a reachable server, or the timeout is reported clearly to the user, with a test covering the path.

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Summary

Cannot connect to WebDAV Server since v2.x

System Setup

- Android: android 17 / API37 using a Pixel 10 Pro
- Cryptomator: Cryptomator v2.1.0-beta1 (3157) "F-Droid Main Repo Edition"

Cloud Type

WebDAV

Steps to Reproduce

1. Open Cryptomator
2. Klick on an existing WebDAV connection

Expected Behavior

Safe should be opened.

Actual Behavior

Nothing happens.

Reproducibility

Always

Relevant Log Output

V	20261016181148.911	Progress	AUTHENTICATION -1%
D	20261016181148.912	ConnectToWebDavUseCase	started 4579fd0b
D	20261016181148.913	OkHttp	--> OPTIONS http://192.168.168.212:55005/ http/1.1 (unknown length)
D	20261016181148.913	OkHttp	--> END OPTIONS
D	20261016181248.976	OkHttp	<-- HTTP FAILED: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
D	20261016181248.978	ConnectToWebDavUseCase	failed 4579fd0b
V	20261016181249.004	Progress	COMPLETED -1%
D	20261016181249.008	ExceptionHandler	Unexpected error
org.cryptomator.domain.exception.NetworkConnectionException: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository.throwNetworkConnectionExceptionIfRequired(WebDavCloudContentRepository.kt:91)
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository.throwWrappedIfRequired(WebDavCloudContentRepository.kt:41)
	at org.cryptomator.data.cloud.InterceptingCloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(InterceptingCloudContentRepository.kt:199)
	at org.cryptomator.data.repository.DispatchingCloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(DispatchingCloudContentRepository.kt:182)
	at org.cryptomator.domain.usecases.cloud.ConnectToWebDav.execute(ConnectToWebDav.java:21)
	at org.cryptomator.domain.usecases.cloud.ConnectToWebDavUseCase$Launcher$2.call(ConnectToWebDavUseCase.java:92)
	at io.reactivex.internal.operators.flowable.FlowableFromCallable.subscribeActual(FlowableFromCallable.java:39)
	at io.reactivex.Flowable.subscribe(Flowable.java:14935)
	at io.reactivex.Flowable.subscribe(Flowable.java:14882)
	at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
	at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker$BooleanRunnable.run(ExecutorScheduler.java:288)
	at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker.run(ExecutorScheduler.java:253)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1100)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:1571)
Caused by: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
	at org.cryptomator.data.cloud.webdav.network.WebDavClient.checkAuthenticationAndServerCompatibility(WebDavClient.kt:243)
	at org.cryptomator.data.cloud.webdav.network.ConnectionHandlerHandlerImpl.checkAuthenticationAndServerCompatibility(ConnectionHandlerHandlerImpl.kt:53)
	at org.cryptomator.data.cloud.webdav.WebDavImpl.checkAuthenticationAndServerCompatibility(WebDavImpl.kt:147)
	at org.cryptomator.data.cloud.webdav.WebDavImpl.currentAccount(WebDavImpl.kt:186)
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository$Intercepted.checkAuthenticationAndRetrieveCurrentAccount(WebDavCloudContentRepository.kt:221)
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository$Intercepted.checkAuthenticationAndRetrieveCurrentAccount(WebDavCloudContentRepository.kt:95)
	at org.cryptomator.data.cloud.InterceptingCloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(InterceptingCloudContentRepository.kt:194)
	... 12 more
Caused by: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
	at libcore.io.IoBridge.connectErrno(IoBridge.java:232)
	at libcore.io.IoBridge.connect(IoBridge.java:176)
	at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:142)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:390)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:230)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:212)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:436)
	at java.net.Socket.connect(Socket.java:646)
	at okhttp3.internal.platform.Platform.connectSocket(Platform.kt:173)
	at okhttp3.internal.connection.ConnectPlan.connectSocket(ConnectPlan.kt:283)
	at okhttp3.internal.connection.ConnectPlan.connectTcp(ConnectPlan.kt:144)
	at okhttp3.internal.connection.FastFallbackExchangeFinder$launchTcpConnect$1.runOnce(FastFallbackExchangeFinder.kt:147)
	at okhttp3.internal.concurrent.TaskRunner$runnable$1.run(TaskRunner.kt:81)
	... 3 more

ErrorCode: 1JA0:T89J
D	20261016181249.009	ExceptionHandler	org.cryptomator.domain.exception.NetworkConnectionException: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository.throwNetworkConnectionExceptionIfRequired(WebDavCloudContentRepository.kt:91)
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository.throwWrappedIfRequired(WebDavCloudContentRepository.kt:41)
	at org.cryptomator.data.cloud.InterceptingCloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(InterceptingCloudContentRepository.kt:199)
	at org.cryptomator.data.repository.DispatchingCloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(DispatchingCloudContentRepository.kt:182)
	at org.cryptomator.domain.usecases.cloud.ConnectToWebDav.execute(ConnectToWebDav.java:21)
	at org.cryptomator.domain.usecases.cloud.ConnectToWebDavUseCase$Launcher$2.call(ConnectToWebDavUseCase.java:92)
	at io.reactivex.internal.operators.flowable.FlowableFromCallable.subscribeActual(FlowableFromCallable.java:39)
	at io.reactivex.Flowable.subscribe(Flowable.java:14935)
	at io.reactivex.Flowable.subscribe(Flowable.java:14882)
	at io.reactivex.internal.operators.flowable.FlowableSubscribeOn$SubscribeOnSubscriber.run(FlowableSubscribeOn.java:82)
	at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker$BooleanRunnable.run(ExecutorScheduler.java:288)
	at io.reactivex.internal.schedulers.ExecutorScheduler$ExecutorWorker.run(ExecutorScheduler.java:253)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1100)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:1571)
Caused by: org.cryptomator.domain.exception.FatalBackendException: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
	at org.cryptomator.data.cloud.webdav.network.WebDavClient.checkAuthenticationAndServerCompatibility(WebDavClient.kt:243)
	at org.cryptomator.data.cloud.webdav.network.ConnectionHandlerHandlerImpl.checkAuthenticationAndServerCompatibility(ConnectionHandlerHandlerImpl.kt:53)
	at org.cryptomator.data.cloud.webdav.WebDavImpl.checkAuthenticationAndServerCompatibility(WebDavImpl.kt:147)
	at org.cryptomator.data.cloud.webdav.WebDavImpl.currentAccount(WebDavImpl.kt:186)
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository$Intercepted.checkAuthenticationAndRetrieveCurrentAccount(WebDavCloudContentRepository.kt:221)
	at org.cryptomator.data.cloud.webdav.WebDavCloudContentRepository$Intercepted.checkAuthenticationAndRetrieveCurrentAccount(WebDavCloudContentRepository.kt:95)
	at org.cryptomator.data.cloud.InterceptingCloudContentRepository.checkAuthenticationAndRetrieveCurrentAccount(InterceptingCloudContentRepository.kt:194)
	... 12 more
Caused by: java.net.SocketTimeoutException: failed to connect to /192.168.168.212 (port 55005) from /192.168.168.42 (port 48064) after 60000ms
	at libcore.io.IoBridge.connectErrno(IoBridge.java:232)
	at libcore.io.IoBridge.connect(IoBridge.java:176)
	at java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:142)
	at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:390)
	at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:230)
	at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:212)
	at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:436)
	at java.net.Socket.connect(Socket.java:646)
	at okhttp3.internal.platform.Platform.connectSocket(Platform.kt:173)
	at okhttp3.internal.connection.ConnectPlan.connectSocket(ConnectPlan.kt:283)
	at okhttp3.internal.connection.ConnectPlan.connectTcp(ConnectPlan.kt:144)
	at okhttp3.internal.connection.FastFallbackExchangeFinder$launchTcpConnect$1.runOnce(FastFallbackExchangeFinder.kt:147)
	at okhttp3.internal.concurrent.TaskRunner$runnable$1.run(TaskRunner.kt:81)
	... 3 more

ErrorCode: 1JA0:T89J
W	20261016181249.014	Message	Keine Internetverbindung

Anything else?

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