App crashes on specific device caused by okhttp when test network

[DitFranXX]

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Describe the bug
Null point exception when test network in proxy mode.

To Reproduce
Steps to reproduce the behavior:

1. Set to proxy mode.
2. Touch any server
3. Connect to server
4. Touch status bar which can test network
5. App crashes

Expected behavior
Show ping toast

Screenshots

Smartphone (please complete the following information):

• Android/Chrome OS version: Android Pie (9)
• Device: Samsung Galaxy Note10 5G Exynos
• Version: 4.8.4
• Last version that did not exhibit the issue: don't know

Configuration
Put an x inside the [ ] that applies.

• IPv4 server address
• IPv6 server address
• Client IPv4 availability
• Client IPv6 availability
• Encrypt method: chacha20-ieft-poly1305
• Route
  • All
  • Bypass LAN
  • Bypass China
  • Bypass LAN & China
  • GFW List
  • China List
  • Custom rules
• IPv6 route
• Apps VPN mode
  • Bypass mode
• Remote DNS: 8.8.8.8
• DNS over UDP
• Plugin configuration (if applicable):
• Auto Connect
• [?] TCP Fast Open (It turned on without any setting)
• If you're not using VPN mode, please supply more details here: Proxy mode, Connected with adguard proxy mode. (SS app filtering is disabled). The proxy is working if doesn't trigger this bug.

Additional context

java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.net.InetAddress.toString()' on a null object reference
	at com.android.okhttp.internal.Util.closeQuietly(Util.java:96)
	at com.android.okhttp.internal.http.StreamAllocation.deallocate(StreamAllocation.java:293)
	at com.android.okhttp.internal.http.StreamAllocation.noNewStreams(StreamAllocation.java:257)
	at com.android.okhttp.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:967)
	at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:759)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:498)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:434)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:565)
	at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
	at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:26)
	at com.github.shadowsocks.net.HttpsTest$testConnection$1$1.invokeSuspend(HttpsTest.kt:101)
	at com.github.shadowsocks.net.HttpsTest$testConnection$1$1.invoke(Unknown Source:10)
	at com.github.shadowsocks.utils.UtilsKt$useCancellable$$inlined$suspendCancellableCoroutine$lambda$2.invokeSuspend(Utils.kt:89)
	at ���(Coroutine boundary.�(�)
	at com.github.shadowsocks.net.HttpsTest$testConnection$1.invokeSuspend(HttpsTest.kt:98)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'java.lang.String java.net.InetAddress.toString()' on a null object reference
	at com.android.okhttp.internal.Util.closeQuietly(Util.java:96)
	at com.android.okhttp.internal.http.StreamAllocation.deallocate(StreamAllocation.java:293)
	at com.android.okhttp.internal.http.StreamAllocation.noNewStreams(StreamAllocation.java:257)
	at com.android.okhttp.internal.http.HttpEngine.readNetworkResponse(HttpEngine.java:967)
	at com.android.okhttp.internal.http.HttpEngine.readResponse(HttpEngine.java:759)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:498)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:434)
	at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:565)
	at com.android.okhttp.internal.huc.DelegatingHttpsURLConnection.getResponseCode(DelegatingHttpsURLConnection.java:105)
	at com.android.okhttp.internal.huc.HttpsURLConnectionImpl.getResponseCode(HttpsURLConnectionImpl.java:26)
	at com.github.shadowsocks.net.HttpsTest$testConnection$1$1.invokeSuspend(HttpsTest.kt:101)
	at com.github.shadowsocks.net.HttpsTest$testConnection$1$1.invoke(Unknown Source:10)
	at com.github.shadowsocks.utils.UtilsKt$useCancellable$$inlined$suspendCancellableCoroutine$lambda$2.invokeSuspend(Utils.kt:89)
	at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
	at kotlinx.coroutines.DispatchedTask.run(Dispatched.kt:241)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:594)
	at kotlinx.coroutines.scheduling.CoroutineScheduler.access$runSafely(CoroutineScheduler.kt:60)
	at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:740)

[Mygod]

Report to your device vendor instead.

Additional information: (@madeye)
This seems to be a bug almost exclusive to Samsung phones (<1% also found in Meizu, Xiaomi, Infinix, and HUAWEI).
Workaround would be to include and ship an HTTP library in our apk and use that. Unfortunately, I have not found an HTTP nonblocking coroutines library yet. See also: ktorio/ktor#1197

[madeye]

It looks an issue of okhttp library on specific devices? If so, we can do nothing here.

[DitFranXX]

Thank you for response.
But is possible to use try-catch for prevent app crashes? It's annoying...

[Mygod]

Please avoid using this feature until Samsung issues a fix. Using try-catch will not fix this issue. (in fact how are your phones even functioning at this point)

[DitFranXX]

I received some update from samsung. They said Analysis was delayed.

It will fixed on next S/W update. They didn't say when it released.

@DitFranXX Could you provide a link to the issue you opened with Samsung (if it is public)? I would benefit from being able to monitor Samsung's progress toward fixing this bug.