預載功能關閉

如果網絡是OFF（例如，它不能訪問YouTube的頁面），並與--preload PARAM開始鈷當平臺啓動時，那麼就無法加載和顯示YouTube的用戶界面，甚至當它從預加載狀態切換到啓動狀態時，url無法重載並且無法顯示UI，因此對於這種情況，鈷如何處理？預載功能關閉

//Even the network is on, it can not reload the YT url from SbSystemRaisePlatformError, tsa03s02-in-f142.1e100.net is the hostname of www.youtube.com 
64 bytes from tsa03s02-in-f142.1e100.net (172.217.27.142): icmp_req=51 ttl=52 time=49.1 ms 
64 bytes from tsa03s02-in-f142.1e100.net (172.217.27.142): icmp_req=52 ttl=52 time=48.3 ms 
64 bytes from tsa03s02-in-f142.1e100.net (172.217.27.142): icmp_req=53 ttl=52 time=66.7 ms 
[cobalt]>[11604:2581014753:INFO:h5vcc_url_handler.cc(119)] try to reload url, url= https://www.youtube.com/tv?additionalDataUrl=http://localhost:56789/apps/YouTube/dial_data 
[cobalt]>[11604:2581014916:INFO:system_raise_platform_error.cc(49)] SbSystemRaisePlatformError: Connection error. 
[cobalt]>[0810/114518:WARNING:system_window.cc(200)] Failed to notify user of error: 0 
[cobalt]>[12263:2581046785:WARNING:thread_set_name.cc(36)] Thread name "SplashScreenWebModule" was truncated to "SplashScreenWeb" 
64 bytes from tsa03s02-in-f14.1e100.net (172.217.27.142): icmp_req=54 ttl=52 time=48.6 ms 
[cobalt]>[0810/114518:INFO:page_visibility_state.cc(70)] PageVisibilityState: app_state=kApplicationStateStarted (2) 
[cobalt]>[12267:2581204654:WARNING:thread_set_name.cc(36)] Thread name "Synchronous Load" was truncated to "Synchronous Loa" 
[cobalt]>[11604:2581247952:INFO:window_get_size.cc(36)] SbWindowGetSizewidth: 1920, height: 1080, ratio: 1 
[cobalt]>[0810/114518:INFO:fetcher_factory.cc(94)] Fetching: h5vcc-embedded://splash_screen.html 
[cobalt]>[0810/114518:INFO:fetcher_factory.cc(94)] Fetching: h5vcc-embedded://splash_screen.css 
[cobalt]>[0810/114518:INFO:fetcher_factory.cc(94)] Fetching: h5vcc-embedded://you_tube_logo.png 
[cobalt]>[0810/114518:INFO:fetcher_factory.cc(94)] Fetching: h5vcc-embedded://splash_screen.js 
[cobalt]>[0810/114518:INFO:page_visibility_state.cc(70)] PageVisibilityState: app_state=kApplicationStateStarted (2) 
[cobalt]>[12272:2581440597:WARNING:thread_set_name.cc(36)] Thread name "Synchronous Load" was truncated to "Synchronous Loa" 
[cobalt]>[0810/114518:INFO:fetcher_factory.cc(94)] Fetching: https://www.youtube.com/tv?additionalDataUrl=http://loc[...] 
[cobalt]>[0810/114518:ERROR:host_resolver_proc.cc(155)] [AAAAA]host= www.youtube.com 
[cobalt]>[0810/114518:ERROR:browser_module.cc(702)] NetFetcher error on : net::ERR_NAME_RESOLUTION_FAILED, response code -1 
[cobalt]>[0810/114518:WARNING:h5vcc_url_handler.cc(30)] url=//network-failure?retry-url=https://www.youtube.com/tv?additionalDataUrl=http://localhost:56789/apps/YouTube/dial_data 
[cobalt]>[0810/114518:WARNING:h5vcc_url_handler.cc(92)] HandleNetworkFailure: 
64 bytes from tsa03s02-in-f14.1e100.net (172.217.27.142): icmp_req=55 ttl=52 time=48.6 ms 
64 bytes from tsa03s02-in-f142.1e100.net (172.217.27.142): icmp_req=56 ttl=52 time=49.5 ms 
64 bytes from tsa03s02-in-f14.1e100.net (172.217.27.142): icmp_req=57 ttl=52 time=67.3 ms 
[cobalt]>[11604:2584493042:INFO:h5vcc_url_handler.cc(119)] try to reload url, url= https://www.youtube.com/tv?additionalDataUrl=http://localhost:56789/apps/YouTube/dial_data

來源

2017-08-09 bitchainer

在常規的非預載模式下，如果啓動鈷沒有網絡，它會試圖加載的URL，失敗，然後調用SbSystemRaisePlatformError，這是普遍預期，顯示某種類型的錯誤對話框，然後可以用指示器回叫以重試。

在預載模式下，情況沒有任何不同。從預加載開始就像啓動應用程序一樣，並不表示網絡狀態發生變化。

現在，如果實現了預加載模式的平臺錯誤，則可以等到要開始轉型再火重試指示。如果需要的話，這將取決於平臺。

也有一些可以發送網絡狀態變化事件（見右舷/ event.h），但我不知道他們是否會導致鈷自動重試。

來源

2017-08-09 14:51:17

嗨，大衛，我試着用你的建議，當它加載youtube失敗，然後嘗試重新加載它在SbSystemRaisePlatformError，但即使網絡是後者，它仍然得到了ERR_NAME_RESOLUTION_FAILED，並進入SbSystemRaisePlatformError，它不能在網絡上重新加載YT。 – bitchainer

我向quesqion添加日誌消息，請幫助引用它。 – bitchainer

即使網絡稍後啓動，SystemHostResolverProc似乎仍然失敗。 – bitchainer

設置過濾器默認kSbSocketResolveFilterIpv4在host_resolver_proc.ccSystemHostResolverProc，也不會得到ERR_NAME_RESOLUTION_FAILED當它從網絡斷開切換到網絡上的狀態，並且可以重新加載頁面YT很好。

來源

2017-08-11 03:22:38 bitchainer

但是還有一個問題，當本地網絡打開時，但它無法訪問YT，它將繼續收到net :: ERR_FAILED錯誤，即使它稍後可以訪問YT，也無法重新加載YT – bitchainer

預載功能關閉

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