Error pinging server

In some cases local server cache proxy is not pinged. One known problem is system proxy in connection's settings (wi-fi or apn).
May be some another reasons exist.
Typical stacktrace is


E/Pinger: Error reading ping response
          com.danikula.videocache.ProxyCacheException: Error opening connection for http://127.0.0.1:52645/ping with offset 0
              at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:75)
              at com.danikula.videocache.Pinger.pingServer(Pinger.java:86)
              at com.danikula.videocache.Pinger.access$100(Pinger.java:28)
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:108)
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:104)
              at java.util.concurrent.FutureTask.run(FutureTask.java:237)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
              at java.lang.Thread.run(Thread.java:818)
           Caused by: java.io.FileNotFoundException: http://127.0.0.1:52645/ping
              at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:238)
              at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:70)
              at com.danikula.videocache.Pinger.pingServer(Pinger.java:86) 
              at com.danikula.videocache.Pinger.access$100(Pinger.java:28) 
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:108) 
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:104) 
              at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
              at java.lang.Thread.run(Thread.java:818) 
E/Pinger: Error reading ping response
          com.danikula.videocache.ProxyCacheException: Error opening connection for http://127.0.0.1:52645/ping with offset 0
              at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:75)
              at com.danikula.videocache.Pinger.pingServer(Pinger.java:86)
              at com.danikula.videocache.Pinger.access$100(Pinger.java:28)
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:108)
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:104)
              at java.util.concurrent.FutureTask.run(FutureTask.java:237)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
              at java.lang.Thread.run(Thread.java:818)
           Caused by: java.io.FileNotFoundException: http://127.0.0.1:52645/ping
              at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:238)
              at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:70)
              at com.danikula.videocache.Pinger.pingServer(Pinger.java:86) 
              at com.danikula.videocache.Pinger.access$100(Pinger.java:28) 
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:108) 
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:104) 
              at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
              at java.lang.Thread.run(Thread.java:818) 
E/Pinger: Error reading ping response
          com.danikula.videocache.ProxyCacheException: Error opening connection for http://127.0.0.1:52645/ping with offset 0
              at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:75)
              at com.danikula.videocache.Pinger.pingServer(Pinger.java:86)
              at com.danikula.videocache.Pinger.access$100(Pinger.java:28)
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:108)
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:104)
              at java.util.concurrent.FutureTask.run(FutureTask.java:237)
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
              at java.lang.Thread.run(Thread.java:818)
           Caused by: java.io.FileNotFoundException: http://127.0.0.1:52645/ping
              at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:238)
              at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:70)
              at com.danikula.videocache.Pinger.pingServer(Pinger.java:86) 
              at com.danikula.videocache.Pinger.access$100(Pinger.java:28) 
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:108) 
              at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:104) 
              at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
              at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113) 
              at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588) 
              at java.lang.Thread.run(Thread.java:818) 
E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, email me danikula@gmail.com or create issue here https://github.com/danikula/AndroidVideoCache/issues
          com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, email me danikula@gmail.com or create issue here https://github.com/danikula/AndroidVideoCache/issues
              at com.danikula.videocache.Pinger.ping(Pinger.java:67)
              at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:182)
              at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:119)
              at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:100)
              at com.danikula.videocache.sample.VideoFragment.startVideo(VideoFragment.java:59)
              at com.danikula.videocache.sample.VideoFragment.afterViewInjected(VideoFragment.java:44)
              at com.danikula.videocache.sample.VideoFragment_.onViewChanged(VideoFragment_.java:107)
              at org.androidannotations.api.view.OnViewChangedNotifier.notifyViewChanged(OnViewChangedNotifier.java:41)
              at com.danikula.videocache.sample.VideoFragment_.onViewCreated(VideoFragment_.java:72)
              at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1097)
              at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1259)
              at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
              at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1624)
              at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:330)
              at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:547)
              at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1237)
              at android.app.Activity.performStart(Activity.java:6268)
              at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2379)
              at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
              at android.app.ActivityThread.-wrap11(ActivityThread.java)
              at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
              at android.os.Handler.dispatchMessage(Handler.java:102)
              at android.os.Looper.loop(Looper.java:148)
              at android.app.ActivityThread.main(ActivityThread.java:5417)
              at java.lang.reflect.Method.invoke(Native Method)
              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)

Since #28 fixed by this commit it should be fixed too.

Hi. Using AndroidVideoCache version 2.7.0 I saw the log below, so here I am, reporting as asked :) Hope it helps somehow.

I was testing using AndroidVideoCache inside recyclerview rows to pre-load audio and video. Scrolling between a lot of items very fast, around list position 650 the log stack traces appeared:

08-01 23:37:33.905 16591-16591 W/Pinger: Error pinging server (attempt: 0, timeout: 70). 
08-01 23:37:34.046 16591-16591 W/Pinger: Error pinging server (attempt: 1, timeout: 140). 
08-01 23:37:34.326 16591-16591 W/Pinger: Error pinging server (attempt: 2, timeout: 280). 
08-01 23:37:34.335 16591-16591 E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]
                                                          com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]. Version: 2.7.0
                                                              at com.danikula.videocache.Pinger.ping(Pinger.java:73)
                                                              at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
                                                              at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
                                                              at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
                                                              at com.myapp.app.controller.AssetController.streamAsset(AssetController.java:117)
                                                              at com.myapp.app.ui.main.feed.cell.AppVideoCell.bind(AppVideoCell.java:38)
                                                              at com.myapp.app.ui.main.feed.AppListAdapter.onBindViewHolder(AppListAdapter.java:97)
                                                              at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6356)
                                                              at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6389)
                                                              at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5335)
                                                              at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5598)
                                                              at android.support.v7.widget.GapWorker.prefetchPositionWithDeadline(GapWorker.java:282)
                                                              at android.support.v7.widget.GapWorker.flushTaskWithDeadline(GapWorker.java:336)
                                                              at android.support.v7.widget.GapWorker.flushTasksWithDeadline(GapWorker.java:349)
                                                              at android.support.v7.widget.GapWorker.prefetch(GapWorker.java:356)
                                                              at android.support.v7.widget.GapWorker.run(GapWorker.java:387)
                                                              at android.os.Handler.handleCallback(Handler.java:751)
                                                              at android.os.Handler.dispatchMessage(Handler.java:95)
                                                              at android.os.Looper.loop(Looper.java:154)
                                                              at android.app.ActivityThread.main(ActivityThread.java:6126)
                                                              at java.lang.reflect.Method.invoke(Native Method)
                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

(...)

08-01 23:37:34.543 16591-16591 W/Pinger: Error pinging server (attempt: 0, timeout: 70). 
08-01 23:37:34.685 16591-16591 W/Pinger: Error pinging server (attempt: 1, timeout: 140). 
08-01 23:37:34.966 16591-16591 W/Pinger: Error pinging server (attempt: 2, timeout: 280). 
08-01 23:37:34.969 16591-16591 E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]
                                                          com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]. Version: 2.7.0
                                                              at com.danikula.videocache.Pinger.ping(Pinger.java:73)
                                                              at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
                                                              at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
                                                              at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
                                                              at com.myapp.app.controller.AssetController.streamAsset(AssetController.java:117)
                                                              at com.myapp.app.ui.main.feed.cell.AppVideoCell.bind(AppVideoCell.java:38)
                                                              at com.myapp.app.ui.main.feed.AppListAdapter.onBindViewHolder(AppListAdapter.java:97)
                                                              at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:6356)
                                                              at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:6389)
                                                              at android.support.v7.widget.RecyclerView$Recycler.tryBindViewHolderByDeadline(RecyclerView.java:5335)
                                                              at android.support.v7.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5598)
                                                              at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5440)
                                                              at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5436)
                                                              at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2224)
                                                              at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1551)
                                                              at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1511)
                                                              at android.support.v7.widget.LinearLayoutManager.scrollBy(LinearLayoutManager.java:1325)
                                                              at android.support.v7.widget.LinearLayoutManager.scrollVerticallyBy(LinearLayoutManager.java:1061)
                                                              at android.support.v7.widget.RecyclerView$ViewFlinger.run(RecyclerView.java:4726)
                                                              at android.view.Choreographer$CallbackRecord.run(Choreographer.java:874)
                                                              at android.view.Choreographer.doCallbacks(Choreographer.java:686)
                                                              at android.view.Choreographer.doFrame(Choreographer.java:618)
                                                              at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:860)
                                                              at android.os.Handler.handleCallback(Handler.java:751)
                                                              at android.os.Handler.dispatchMessage(Handler.java:95)
                                                              at android.os.Looper.loop(Looper.java:154)
                                                              at android.app.ActivityThread.main(ActivityThread.java:6126)
                                                              at java.lang.reflect.Method.invoke(Native Method)
                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)

(...)

08-01 23:37:37.535 16591-20734 E/ProxyCache: ProxyCache error
                                                              com.danikula.videocache.ProxyCacheException: Error opening connection for http://api.myapp.com/asset/123 with offset 72932. Version: 2.7.0
                                                                  at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:75)
                                                                  at com.danikula.videocache.ProxyCache.readSource(ProxyCache.java:123)
                                                                  at com.danikula.videocache.ProxyCache.access$100(ProxyCache.java:19)
                                                                  at com.danikula.videocache.ProxyCache$SourceReaderRunnable.run(ProxyCache.java:187)
                                                                  at java.lang.Thread.run(Thread.java:761)
                                                               Caused by: java.io.FileNotFoundException: http://api.myapp.com/asset/123
                                                                  at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:250)
                                                                  at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:70)
                                                                  at com.danikula.videocache.ProxyCache.readSource(ProxyCache.java:123) 
                                                                  at com.danikula.videocache.ProxyCache.access$100(ProxyCache.java:19) 
                                                                  at com.danikula.videocache.ProxyCache$SourceReaderRunnable.run(ProxyCache.java:187) 
                                                                  at java.lang.Thread.run(Thread.java:761) 
08-01 23:37:37.537 16591-17446 E/HttpProxyCacheServer: HttpProxyCacheServer error
                                                                        com.danikula.videocache.ProxyCacheException: Error processing request. Version: 2.7.0
                                                                            at com.danikula.videocache.HttpProxyCacheServer.processSocket(HttpProxyCacheServer.java:241)
                                                                            at com.danikula.videocache.HttpProxyCacheServer.access$200(HttpProxyCacheServer.java:52)
                                                                            at com.danikula.videocache.HttpProxyCacheServer$SocketProcessorRunnable.run(HttpProxyCacheServer.java:338)
                                                                            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428)
                                                                            at java.util.concurrent.FutureTask.run(FutureTask.java:237)
                                                                            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
                                                                            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
                                                                            at java.lang.Thread.run(Thread.java:761)
                                                                         Caused by: com.danikula.videocache.ProxyCacheException: Error reading source 1 times. Version: 2.7.0
                                                                            at com.danikula.videocache.ProxyCache.checkReadSourceErrorsCount(ProxyCache.java:59)
                                                                            at com.danikula.videocache.ProxyCache.read(ProxyCache.java:45)
                                                                            at com.danikula.videocache.HttpProxyCache.responseWithCache(HttpProxyCache.java:79)
                                                                            at com.danikula.videocache.HttpProxyCache.processRequest(HttpProxyCache.java:45)
                                                                            at com.danikula.videocache.HttpProxyCacheServerClients.processRequest(HttpProxyCacheServerClients.java:42)
                                                                            at com.danikula.videocache.HttpProxyCacheServer.processSocket(HttpProxyCacheServer.java:234)
                                                                            at com.danikula.videocache.HttpProxyCacheServer.access$200(HttpProxyCacheServer.java:52) 
                                                                            at com.danikula.videocache.HttpProxyCacheServer$SocketProcessorRunnable.run(HttpProxyCacheServer.java:338) 
                                                                            at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:428) 
                                                                            at java.util.concurrent.FutureTask.run(FutureTask.java:237) 
                                                                            at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133) 
                                                                            at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607) 
                                                                            at java.lang.Thread.run(Thread.java:761)

@ricardorover

Have a some problem as @ricardorover

E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT@]
com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT@]. Version: 2.7.0
at com.danikula.videocache.Pinger.ping(Pinger.java:73)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
at com.haier.cellarette.activity.VideoModuleActivity.startVideo(VideoModuleActivity.java:445)
at com.haier.cellarette.activity.VideoModuleActivity.showContent(VideoModuleActivity.java:353)
at com.haier.wine_consult.presenter.ConsultPresenter$5.onNext(ConsultPresenter.java:136)
at com.haier.wine_consult.presenter.ConsultPresenter$5.onNext(ConsultPresenter.java:121)
at rx.observers.SafeSubscriber.onNext(SafeSubscriber.java:139)
at rx.internal.operators.OperatorObserveOn$ObserveOnSubscriber.call(OperatorObserveOn.java:215)
at rx.android.schedulers.LooperScheduler$ScheduledAction.run(LooperScheduler.java:107)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5280)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:963)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:758)

E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT@]
                                                             com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT@]. Version: 2.7.0
                                                                 at com.danikula.videocache.Pinger.ping(Pinger.java:73)
                                                                 at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
                                                                 at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
                                                                 at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
                                                                 ...

after many days of frustration I managed to find something: NanoHttpd/nanohttpd#270 (comment),
as MrStanaland said, Mint is causing this, at least in my case, now it works for me 👍

Mint.disableNetworkMonitoring();
Mint.initAndStartSession(context, BuildConfig.MINT);

com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [HTTP @ Version: 2.7.0
at com.danikula.videocache.Pinger.ping(Pinger.java:73)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
at com.goodchef.liking.module.paly.VideoPlayActivity.onCreate(VideoPlayActivity.java:146)
at android.app.Activity.performCreate(Activity.java:6910)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1123)
at cn.jiguang.a.a.d.a.a.d.callActivityOnCreate(Unknown Source)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2746)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2864)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1567)
at android.os.Handler.dispatchMessage(Handler.java:105)
at android.os.Looper.loop(Looper.java:156)
at android.app.ActivityThread.main(ActivityThread.java:6577)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:942)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:832)

When I loaded the local video, there was' Error pinging server (attempt: 2, timeout: 280) 'and this Error

Default proxies are: [DIRECT]
com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]. Version: 2.7.0
at com.danikula.videocache.Pinger.ping(Pinger.java:73)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
at com.danikula.videocache.sample.VideoFragment.setupPlayer(VideoFragment.java:80)
at com.danikula.videocache.sample.VideoFragment.afterViewInjected(VideoFragment.java:63)
at com.danikula.videocache.sample.VideoFragment_.onViewChanged(VideoFragment_.java:107)
at org.androidannotations.api.view.OnViewChangedNotifier.notifyViewChanged(OnViewChangedNotifier.java:41)
at com.danikula.videocache.sample.VideoFragment_.onViewCreated(VideoFragment_.java:72)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1097)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1259)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:738)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1624)
at android.support.v4.app.FragmentController.execPendingActions(FragmentController.java:330)
at android.support.v4.app.FragmentActivity.onStart(FragmentActivity.java:547)
at android.app.Instrumentation.callActivityOnStart(Instrumentation.java:1270)
at android.app.Activity.performStart(Activity.java:6689)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2622)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2724)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1473)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6123)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:757)

getting this issue

Hello,I using this library,this but I rest on video list pager a long time, again scroll list,they throw the error:

`E/Pinger: Error reading ping response
com.danikula.videocache.ProxyCacheException: Error opening connection for http://127.0.0.1:58762/ping with offset 0. Version: 2.7.0
at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:75)
at com.danikula.videocache.Pinger.pingServer(Pinger.java:101)
at com.danikula.videocache.Pinger.access$100(Pinger.java:33)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:123)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:119)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:776)
Caused by: java.io.FileNotFoundException: http://127.0.0.1:58762/ping
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getInputStream(HttpURLConnectionImpl.java:250)
at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:70)
at com.danikula.videocache.Pinger.pingServer(Pinger.java:101)
at com.danikula.videocache.Pinger.access$100(Pinger.java:33)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:123)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:119)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1133)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:607)
at java.lang.Thread.run(Thread.java:776)

//When I look this lines,I don't think Default proxy is [HTTP @ 10.8.8.103:81] but proxy in Library is //[127.0.0.1] ,my should modify Default proxy in library?

E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [HTTP @ 10.8.8.103:81]
com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [HTTP @ 10.8.8.103:81]. Version: 2.7.0
at com.danikula.videocache.Pinger.ping(Pinger.java:73)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
at com.shuyu.gsyvideoplayer.video.base.GSYVideoView.setUp(GSYVideoView.java:381)
at com.shuyu.gsyvideoplayer.video.base.GSYVideoControlView.setUp(GSYVideoControlView.java:524)
`
I hope you can answer my question,thanks.

thanks author's masterpiece . response error still occurs on my phone,even though it has "IgnoreHostProxySelector.install(PROXY_HOST, port);" in HttpProxyCacheServer constructor function.Anyone knows how to resolve it?thank you.

I saw this log when I connected to Wifi which has no Connection to Internet

AND
If I close both wifi and cell data, your proxy can not provider cached res.

This problem still occurs even if wifi is connected

E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT@]
                                                             com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT@]. Version: 2.7.0
                                                                 at com.danikula.videocache.Pinger.ping(Pinger.java:73)
                                                                 at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:183)
                                                                 at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:120)
                                                                 at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:101)
                                                                 ...

after many days of frustration I managed to find something: NanoHttpd/nanohttpd#270 (comment),
as MrStanaland said, Mint is causing this, at least in my case, now it works for me 👍

Mint.disableNetworkMonitoring();
Mint.initAndStartSession(context, BuildConfig.MINT);

who is MrStanaland?

Same with @nuborisar, and the solution works for the following case:

Caused by: java.io.IOException: Cleartext HTTP traffic to 127.0.0.1 not permitted

Check your android:networkSecurityConfig file, and add

<domain-config cleartextTrafficPermitted="true">
    <domain includeSubdomains="true">127.0.0.1</domain>
</domain-config>

runOnUiThread(Runnable {
this.netPath = netPath
// var videoUrl = Const.PicBaseUrlConst.VID_BASE_URL.plus(netPath)
var videoUrl = "http://122.51.230.43:8081/e98d5c1b754b2fcb7941232135504a46/wx_camera_1584678750453.mp4"
Log.e("JavascriptInterface", "videoUrl:" + videoUrl)

videoplayer.setUp(videoUrl,"dsa", Jzvd.SCREEN_NORMAL)//videoplayer
Glide.with(videoplayer).load(videoUrl).into(videoplayer.posterImageView)

Log.e("JavascriptInterface", "videoUrl:" + videoUrl)

// viewModel.uploadCover()
// viewModel.postVideoArticle(netPath,)
video_capture.visibility = View.GONE
})

Use runOnUiThread can fixed it

i have see this: when i use it:

Android Studio & Platform:

Android Studio 4.1.1
Build #AI-201.8743.12.41.6953283, built on November 5, 2020
Runtime version: 1.8.0_242-release-1644-b3-6915495 x86_64
VM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
macOS 10.16

Android build.gradle config:

  minSdkVersion 21
  targetSdkVersion 30

  kotlinOptions { jvmTarget = '1.8' }

Phone: XIAOMI K30 (Android11, MIUI12)
The way i use it:

// i had use "ktor" to make requests to local  proxy server.
CoroutineScope(Dispatchers.IO).launch {
  ...
  var client: HttpClient? = null
  try {
      ...
     client = HttpClient(OkHttp) ...
     val statement = client.get<HttpStatement>(httpProxyCacheServer.getProxyUrl(rawUrl)) // this is (PreloadStatement.kt:53)
     ...
  }
}

other info:
i had not implementation this library derectly but use third-party library:

 implementation 'com.github.CarGuo.GSYVideoPlayer:gsyVideoPlayer-java:v8.1.3-jitpack'

i've clone this project newest and compare with that:
just some thing different:

i try to exclude third-party lib and use this:

    implementation("com.github.CarGuo.GSYVideoPlayer:gsyVideoPlayer-java:$GSY_PLAYER_VERSION") {
        exclude group: 'com.github.CarGuo.GSYVideoPlayer', module: 'gsyVideoPlayer-proxy_cache'
    }
    implementation "com.danikula:videocache:2.7.1"

but not working, and crash as if because not support https.

error log:

2021-04-25 17:40:37.311 32413-32579/com.mycompany.demo W/HttpProxyCacheDebuger: Error pinging server (attempt: 2, timeout: 280). 
2021-04-25 17:40:37.311 32413-32574/com.mycompany.demo W/HttpProxyCacheDebuger: Error pinging server (attempt: 2, timeout: 280). 
2021-04-25 17:40:37.312 32413-32579/com.mycompany.demo E/HttpProxyCacheDebuger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]
2021-04-25 17:40:37.312 32413-32574/com.mycompany.demo E/HttpProxyCacheDebuger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]
2021-04-25 17:40:37.312 32413-32574/com.mycompany.demo W/System.err: com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]. Version: 8.1.2
2021-04-25 17:40:37.312 32413-32574/com.mycompany.demo W/System.err:     at com.danikula.videocache.Pinger.ping(Pinger.java:71)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:184)
    
    [          1619343637.313 32413:32510 W/Failed to close socket on proxy side: {}. It seems client have already closed connectioshutdown failed: ENOTCONN (Transport endpoint is not connected)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:121)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:102)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at com.mycompany.demo.ui.video.manager.PreloadStatement$start$1.invokeSuspend(PreloadStatement.kt:53)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
2021-04-25 17:40:37.313 32413-32574/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
2021-04-25 17:40:37.313 32413-32579/com.mycompany.demo W/System.err: com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]. Version: 8.1.2
2021-04-25 17:40:37.313 32413-32579/com.mycompany.demo W/System.err:     at com.danikula.videocache.Pinger.ping(Pinger.java:71)
2021-04-25 17:40:37.313 32413-32579/com.mycompany.demo W/System.err:     at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:184)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:121)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:102)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at com.mycompany.demo.ui.video.manager.PreloadStatement$start$1.invokeSuspend(PreloadStatement.kt:53)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:106)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:750)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
2021-04-25 17:40:37.314 32413-32579/com.mycompany.demo W/System.err:     at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
2021-04-25 17:40:37.316 32413-32510/com.mycompany.demo I/HttpProxyCacheDebuger: Opened connections: 7
2021-04-25 17:40:37.339 32413-32510/com.mycompany.demo E/HttpProxyCacheDebuger: ****** injectCustomHeaders ****** :0

E/HttpProxyCacheServer: HttpProxyCacheServer error
com.danikula.videocache.ProxyCacheException: Error during waiting connection. Version: 2.7.1
at com.danikula.videocache.HttpProxyCacheServer.waitForRequest(HttpProxyCacheServer.java:223)
at com.danikula.videocache.HttpProxyCacheServer.access$100(HttpProxyCacheServer.java:54)
at com.danikula.videocache.HttpProxyCacheServer$WaitRequestsRunnable.run(HttpProxyCacheServer.java:326)
at java.lang.Thread.run(Thread.java:761)
Caused by: java.net.SocketException: Socket closed
at java.net.PlainSocketImpl.socketAccept(Native Method)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:389)
at java.net.ServerSocket.implAccept(ServerSocket.java:531)
at java.net.ServerSocket.accept(ServerSocket.java:499)
at com.danikula.videocache.HttpProxyCacheServer.waitForRequest(HttpProxyCacheServer.java:218)
at com.danikula.videocache.HttpProxyCacheServer.access$100(HttpProxyCacheServer.java:54)
at com.danikula.videocache.HttpProxyCacheServer$WaitRequestsRunnable.run(HttpProxyCacheServer.java:326)
at java.lang.Thread.run(Thread.java:761)

2022-03-09 09:16:55.536 10193-10193/com.yihua.hugou W/System.err: com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]. Version: 7.1.5
2022-03-09 09:16:55.537 10193-10193/com.yihua.hugou W/System.err: at com.danikula.videocache.Pinger.ping(Pinger.java:71)
2022-03-09 09:16:55.537 10193-10193/com.yihua.hugou W/System.err: at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:181)
2022-03-09 09:16:55.537 10193-10193/com.yihua.hugou W/System.err: at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:118)
2022-03-09 09:16:55.537 10193-10193/com.yihua.hugou W/System.err: at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:99)
2022-03-09 09:16:55.537 10193-10193/com.yihua.hugou W/System.err: at com.shuyu.gsyvideoplayer.cache.ProxyCacheManager.doCacheLogic(ProxyCacheManager.java:75)
2022-03-09 09:16:55.537 10193-10193/com.yihua.hugou W/System.err: at tv.danmaku.ijk.media.exo2.Exo2PlayerManager.initVideoPlayer(Exo2PlayerManager.java:62)
2022-03-09 09:16:55.538 10193-10193/com.yihua.hugou W/System.err: at com.shuyu.gsyvideoplayer.GSYVideoBaseManager.initVideo(GSYVideoBaseManager.java:612)
2022-03-09 09:16:55.538 10193-10193/com.yihua.hugou W/System.err: at com.shuyu.gsyvideoplayer.GSYVideoBaseManager.access$000(GSYVideoBaseManager.java:38)
2022-03-09 09:16:55.538 10193-10193/com.yihua.hugou W/System.err: at com.shuyu.gsyvideoplayer.GSYVideoBaseManager$MediaHandler.handleMessage(GSYVideoBaseManager.java:572)
2022-03-09 09:16:55.538 10193-10193/com.yihua.hugou W/System.err: at android.os.Handler.dispatchMessage(Handler.java:110)
2022-03-09 09:16:55.538 10193-10193/com.yihua.hugou W/System.err: at android.os.Looper.loop(Looper.java:219)
2022-03-09 09:16:55.538 10193-10193/com.yihua.hugou W/System.err: at android.app.ActivityThread.main(ActivityThread.java:8668)
2022-03-09 09:16:55.539 10193-10193/com.yihua.hugou W/System.err: at java.lang.reflect.Method.invoke(Native Method)
2022-03-09 09:16:55.539 10193-10193/com.yihua.hugou W/System.err: at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:513)
2022-03-09 09:16:55.539 10193-10193/com.yihua.hugou W/System.err: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1109)

2022-06-30 12:42:34.686 27076-27767/myapp.debug E/Pinger: Error reading ping response
com.danikula.videocache.ProxyCacheException: Error opening connection for http://127.0.0.1:37983/ping with offset 0. Version: 2.7.1
at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:85)
at com.danikula.videocache.Pinger.pingServer(Pinger.java:101)
at com.danikula.videocache.Pinger.access$100(Pinger.java:33)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:123)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:119)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
Caused by: java.io.IOException: Cleartext HTTP traffic to 127.0.0.1 not permitted
at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:124)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:462)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411)
at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542)
at com.danikula.videocache.HttpUrlSource.openConnection(HttpUrlSource.java:171)
at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:78)
at com.danikula.videocache.Pinger.pingServer(Pinger.java:101)
at com.danikula.videocache.Pinger.access$100(Pinger.java:33)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:123)
at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:119)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:919)
2022-06-30 12:42:34.688 27076-27398/myapp.debug E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]
com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]. Version: 2.7.1
at com.danikula.videocache.Pinger.ping(Pinger.java:73)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:185)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:122)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:103)

E Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]
com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]. Version: 2.7.1
at com.danikula.videocache.Pinger.ping(Unknown Source:135)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(Unknown Source:5)
at com.danikula.videocache.HttpProxyCacheServer.(Unknown Source:101)
at com.danikula.videocache.HttpProxyCacheServer.(Unknown Source:0)
at com.danikula.videocache.HttpProxyCacheServer$Builder.build(Unknown Source:7)

我同样遇到了这个问题，使用viewpager2+fragment ，在fragment中展示Jzvd player。

E/MediaMetadataRetrieverJNI: getFrameAtTime: videoFrame is a NULL pointer E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT] pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at https://github.com/danikula/AndroidVideoCache/issues/134. Default proxies are: [DIRECT]. Version: 2.7.1

有找到解决办法么，我和你使用场景一样

Is there a solution?

2022-06-30 12:42:34.686 27076-27767/myapp.debug E/Pinger: Error reading ping response com.danikula.videocache.ProxyCacheException: Error opening connection for http://127.0.0.1:37983/ping with offset 0. Version: 2.7.1 at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:85) at com.danikula.videocache.Pinger.pingServer(Pinger.java:101) at com.danikula.videocache.Pinger.access$100(Pinger.java:33) at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:123) at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:119) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:919) Caused by: java.io.IOException: Cleartext HTTP traffic to 127.0.0.1 not permitted at com.android.okhttp.HttpHandler$CleartextURLFilter.checkURLPermitted(HttpHandler.java:124) at com.android.okhttp.internal.huc.HttpURLConnectionImpl.execute(HttpURLConnectionImpl.java:462) at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponse(HttpURLConnectionImpl.java:411) at com.android.okhttp.internal.huc.HttpURLConnectionImpl.getResponseCode(HttpURLConnectionImpl.java:542) at com.danikula.videocache.HttpUrlSource.openConnection(HttpUrlSource.java:171) at com.danikula.videocache.HttpUrlSource.open(HttpUrlSource.java:78) at com.danikula.videocache.Pinger.pingServer(Pinger.java:101) at com.danikula.videocache.Pinger.access$100(Pinger.java:33) at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:123) at com.danikula.videocache.Pinger$PingCallable.call(Pinger.java:119) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641) at java.lang.Thread.run(Thread.java:919) 2022-06-30 12:42:34.688 27076-27398/myapp.debug E/Pinger: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT] com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]. Version: 2.7.1 at com.danikula.videocache.Pinger.ping(Pinger.java:73) at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:185) at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:122) at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:103)

Adding networkSecurityConfig to manifest has solved this problem for me. See here: https://stackoverflow.com/a/54268640/4191562

Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]
com.danikula.videocache.ProxyCacheException: Error pinging server (attempts: 3, max timeout: 280). If you see this message, please, report at #134. Default proxies are: [DIRECT]. Version: 2.7.1
at com.danikula.videocache.Pinger.ping(Pinger.java:73)
at com.danikula.videocache.HttpProxyCacheServer.isAlive(HttpProxyCacheServer.java:185)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:122)
at com.danikula.videocache.HttpProxyCacheServer.getProxyUrl(HttpProxyCacheServer.java:103)

Finally following solution worked for me :)
add following in a xml file network_security_config inside res/xml dir
<network-security-config> <domain-config cleartextTrafficPermitted="true"> <domain includeSubdomains="true">127.0.0.1</domain> </domain-config> <base-config cleartextTrafficPermitted="false"> <trust-anchors> <certificates src="system" /> </trust-anchors> </base-config> </network-security-config>

add following lines in Manifest.xml file inside application tag and outside activity
android:networkSecurityConfig="@xml/network_security_config"

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Error pinging server #134

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