无网状态下，SDK初始化时会抛出异常，应用捕获不到

java.net.SocketTimeoutException: failed to connect to api.coze.cn/221.8.93.168 (port 443) from /10.245.3.40 (port 38488) after 5000ms
at libcore.io.IoBridge.connectErrno(IoBridge.java:236)
at libcore.io.IoBridge.connect(IoBridge.java:180)
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:621)
at okhttp3.internal.platform.Platform.connectSocket(Platform.kt:1)
at okhttp3.internal.connection.RealConnection.connectSocket(RealConnection.kt:9)
at okhttp3.internal.connection.RealConnection.connect(RealConnection.kt:16)
at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:38)
at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:1)
at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:7)
at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:7)
at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:2)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:12)
at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:27)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:12)
at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:22)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:12)
at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:7)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:12)
at com.coze.openapi.service.utils.UserAgentInterceptor.intercept(UserAgentInterceptor.java:6)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:12)
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:16)
at okhttp3.internal.connection.RealCall.execute(RealCall.kt:5)
at retrofit2.OkHttpCall.execute(OkHttpCall.java:8)
at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:5)
at io.reactivex.Observable.subscribe(Observable.java:14)
at io.reactivex.internal.operators.observable.ObservableSingleSingle.subscribeActual(ObservableSingleSingle.java:1)
at io.reactivex.Single.subscribe(Single.java:13)
at io.reactivex.Single.blockingGet(Single.java:2)
at com.coze.openapi.service.auth.OAuthClient.execute(OAuthClient.java:1)
at com.coze.openapi.service.auth.OAuthClient.getAccessToken(OAuthClient.java:5)
at com.coze.openapi.service.auth.JWTOAuthClient.doGetAccessToken(JWTOAuthClient.java:25)
at com.coze.openapi.service.auth.JWTOAuthClient.getAccessToken(JWTOAuthClient.java:13)
at com.coze.openapi.service.auth.JWTOAuth.token(JWTOAuth.java:11)
at com.coze.openapi.service.service.AuthenticationInterceptor.intercept(AuthenticationInterceptor.java:5)
at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:12)
at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:16)
at okhttp3.internal.connection.RealCall$AsyncCall.run(RealCall.kt:6)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:920)

オフラインで SDK の初期化を再現し、AuthenticationInterceptor から JWTOAuth、JWTOAuthClient、OAuthClient.getAccessToken までの呼び出しパスを追跡します。初期化中に OkHttp と RxJava のチェーンから SocketTimeoutException がどのように伝播するかを確認します。アプリケーションが未捕捉例外を発生させるのではなく、オフライン障害を受け取って処理できれば完了です。

索引モデルが issue の本文から書いたものです。