Handshake fails for some mastodon instances

[jocelynetienne]

Trying to connect to scicomm.xyz, I get the error "handshake failed" while:

• other instances such as social.linux.pizza work with same mobile and version,
• connecting to scicomm.xyz works with tusky app with same mobile.

Android 7.0, mastodon 1.1.3 I was pointed to a possible TSL problem, but checking at https://www.howsmyssl.com/ reports no problem.

[grishka]

Hmm. It does work on Android 13 and 9 for me 🤔

[grishka]

Android 7 for some reason returns "network is unreachable".

[grishka]

Full exception from Android 7:

W/MastodonAPIController: [no-auth] Request{method=GET, url=https://scicomm.xyz/api/v1/instance, tags={}} failed
    java.net.SocketException: Network is unreachable
        at java.net.PlainSocketImpl.socketConnect(Native Method)
        at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:334)
        at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:196)
        at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:178)
        at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:356)
        at java.net.Socket.connect(Socket.java:586)
        at okhttp3.internal.platform.AndroidPlatform.connectSocket(AndroidPlatform.java:71)
        at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.java:263)
        at okhttp3.internal.connection.RealConnection.connect(RealConnection.java:183)
        at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.java:224)
        at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.java:108)
        at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.java:88)
        at okhttp3.internal.connection.Transmitter.newExchange(Transmitter.java:169)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:41)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:94)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:88)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:142)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:117)
        at okhttp3.RealCall.getResponseWithInterceptorChain(RealCall.java:229)
        at okhttp3.RealCall$AsyncCall.execute(RealCall.java:172)
        at okhttp3.internal.NamedRunnable.run(NamedRunnable.java:32)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
        at java.lang.Thread.run(Thread.java:762)

"network unreachable" does suggest that there's something wrong with IP/DNS/firewall configuration. I just have no idea what that might be. Even weirder that I can open it in Chrome on the same device.

[jspashett]

I have the same problem with the toot.wales instance on a Galaxy S6, where the Tusky app does work. I have not yet verified the logs.