UnknownHostException leads to error screen

[sk22]

1. Environment

Version: 0.10.1
Device: Xiaomi 2201123G
System: Android 14 (API 34)

2. Describe the bug

I currently use Tailscale to connect to my NAS by hostname ("nas") – this leads to the app crashing when Tailscale isn't turned on.

I'd propose catching the exception (or network exceptions in general) and displaying something like a toast notification about the connection failure.

Version: 0.10.1
Device: Xiaomi 2201123G
System: Android 14 (API 34)

Stack trace: 

java.net.UnknownHostException: Unable to resolve host "nas": No address associated with hostname
	at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:156)
	at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
	at java.net.InetAddress.getAllByName(InetAddress.java:1152)
	at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:6)
	at okhttp3.internal.connection.RealRoutePlanner.plan(RealRoutePlanner.kt:469)
	at okhttp3.internal.connection.FastFallbackExchangeFinder.launchTcpConnect(FastFallbackExchangeFinder.kt:10)
	at okhttp3.internal.connection.FastFallbackExchangeFinder.find(FastFallbackExchangeFinder.kt:61)
	at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:1015)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:139)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:174)
	at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:126)
	at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:96)
	at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:48)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:644)
	at java.lang.Thread.run(Thread.java:1012)
	Suppressed: kotlinx.coroutines.internal.DiagnosticCoroutineContextException: [StandaloneCoroutine{Cancelling}@3245efc, Dispatchers.IO]
Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
	at libcore.io.Linux.android_getaddrinfo(Native Method)
	at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:133)
	at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:222)
	at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:133)
	at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135)
	... 19 more

[quantenzitrone]

Same on Android 8.1.0 (API 27)