从谷歌服务器下载错误

Question

我已经从Xamrin下载软件包，当我安装Xamarin安装程序时，得到如下错误。我已经尝试了Installing Xamarin Mono for Android中给出的指示，但是相同。我已经尝试了3次。

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[2013-04-23 03:53:28.841] [Info] Software item 'Xamarin.iOS for Visual Studio': not up to date 
[2013-04-23 03:53:28.848] [Info] Component 'Xamarin.iOS for Visual Studio' v. 1.0.897 absent 
[2013-04-23 03:53:28.856] [Info] Detection complete 
[2013-04-23 03:53:36.597] [Debug] Waiting for initial task to complete. 
[2013-04-23 03:53:36.606] [Debug] Initial task already completed. 
[2013-04-23 03:53:36.617] [Debug] Detection completed. 
[2013-04-23 03:53:42.250] [Info] User chose to update Android SDK at: <USER_HOME>\Android\android-sdk 
[2013-04-23 03:53:45.272] [Info] 11 Android SDK components need to be downloaded. 
[2013-04-23 03:53:45.281] [Debug] Enqueueing component: platform-tools ("platform tools") 
[2013-04-23 03:53:45.289] [Debug] Enqueueing component: tools ("tools") 
[2013-04-23 03:53:45.298] [Debug] Enqueueing component: android-7 ("Android SDK Platform 2.1_r3") 
[2013-04-23 03:53:45.306] [Debug] Enqueueing component: android-8 ("Android SDK Platform 2.2_r3") 
[2013-04-23 03:53:45.316] [Debug] Enqueueing component: android-10 ("Android SDK Platform 2.3.3._r2") 
[2013-04-23 03:53:45.324] [Debug] Enqueueing component: android-12 ("Android SDK Platform 3.1, revision 3") 
[2013-04-23 03:53:45.333] [Debug] Enqueueing component: android-14 ("Android SDK Platform 4.0") 
[2013-04-23 03:53:45.340] [Debug] Enqueueing component: system-image-14 ("Android SDK Platform 4.0") 
[2013-04-23 03:53:45.350] [Debug] Enqueueing component: android-15 ("Android SDK Platform 4.0.3") 
[2013-04-23 03:53:45.361] [Debug] Enqueueing component: system-image-15 ("Android SDK Platform 4.0.3") 
[2013-04-23 03:53:45.369] [Debug] Enqueueing component: NDK r8d ("Android NDK r8d (it may take a while)") 
[2013-04-23 03:53:45.478] [Debug] Download service starting. 
[2013-04-23 03:53:45.990] [Debug] Download size for 'http://dl.google.com/android/installer_r21-windows.exe': 77523031 
[2013-04-23 03:53:45.998] [Debug] Download size for 'http://dl.google.com/android/repository/platform-tools_r16.0.2-windows.zip': 11948088 
[2013-04-23 03:53:46.107] [Debug] Download size for 'http://dl.google.com/android/repository/tools_r21.1-windows.zip': 99246397 
[2013-04-23 03:53:46.720] [Debug] Download size for 'http://dl.google.com/android/repository/android-2.1_r03-linux.zip': 70142829 
[2013-04-23 03:53:46.728] [Debug] Download size for 'http://dl.google.com/android/repository/android-2.2_r03-linux.zip': 74652366 
[2013-04-23 03:53:47.236] [Debug] Download size for 'http://dl.google.com/android/repository/android-2.3.3_r02-linux.zip': 85470907 
[2013-04-23 03:53:47.345] [Debug] Download size for 'http://dl.google.com/android/repository/android-3.1_r03-linux.zip': 106472351 
[2013-04-23 03:53:47.453] [Debug] Download size for 'http://dl.google.com/android/repository/android-14_r03.zip': 45919570 
[2013-04-23 03:53:47.562] [Debug] Download size for 'http://dl.google.com/android/repository/sysimg_armv7a-14_r02.zip': 99621822 
[2013-04-23 03:53:47.671] [Debug] Download size for 'http://dl.google.com/android/repository/android-15_r03.zip': 44414679 
[2013-04-23 03:53:47.680] [Debug] Download size for 'http://dl.google.com/android/repository/sysimg_armv7a-15_r02.zip': 96227377 
[2013-04-23 03:53:47.789] [Debug] Download size for 'http://dl.google.com/android/ndk/android-ndk-r8d-windows.zip': 327014028 
[2013-04-23 03:53:48.599] [Info] Installation of software items starting. 
[2013-04-23 03:53:48.610] [Debug] Checking software item 'Java JDK' 
[2013-04-23 03:53:48.622] [Info] Software item 'Java JDK' does not need to be installed 
[2013-04-23 03:53:48.631] [Debug] Checking software item 'Android SDK' 
[2013-04-23 03:53:48.639] [Debug] Checking software item 'GTK#' 
[2013-04-23 03:53:48.648] [Info] Software item 'GTK#' does not need to be installed 
[2013-04-23 03:53:48.656] [Debug] Checking software item 'Xamarin Studio' 
[2013-04-23 03:53:48.664] [Info] Software item 'Xamarin Studio' does not need to be installed 
[2013-04-23 03:53:48.672] [Debug] Checking software item 'Xamarin.Android for Visual Studio and Xamarin Studio' 
[2013-04-23 03:53:48.680] [Debug] Checking software item 'Xamarin.iOS for Visual Studio' 
[2013-04-23 03:53:48.689] [Debug] Starting installation task. 
[2013-04-23 03:53:48.697] [Info] Background installation worker called. 
[2013-04-23 03:53:48.706] [Info] Processing software items 
[2013-04-23 03:53:48.714] [Info] Skipping installation of software item 'Java JDK' 
[2013-04-23 03:53:48.721] [Info] Installing software item 'Android SDK' 
[2013-04-23 03:53:48.729] [Info] Android SDK is waiting for download to finish. 
[2013-04-23 03:53:51.648] [Debug] Download size for 'http://download.xamarin.com/MonoforAndroid/Windows/mono-android-4.6.04000.msi': 163536039 
[2013-04-23 03:53:51.957] [Debug] Download size for 'http://download.xamarin.com/MonoTouchforVisualStudio/Windows/mtvs-1.0.897.0.msi': 44552752 
[2013-04-23 03:53:51.965] [Info] Downloading from 'http://dl.google.com/android/installer_r21-windows.exe'. 
[2013-04-23 03:53:51.973] [Debug] Setting download timeout for 'http://dl.google.com/android/installer_r21-windows.exe' to 60s 
[2013-04-23 04:17:43.137] [Info] Downloading from 'http://dl.google.com/android/repository/platform-tools_r16.0.2-windows.zip'. 
[2013-04-23 04:17:43.148] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/platform-tools_r16.0.2-windows.zip' to 60s 
[2013-04-23 04:17:43.458] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\platform-tools_r16.0.2-windows.zip is a valid ZIP archive 
[2013-04-23 04:17:43.467] [Debug] URL http://dl.google.com/android/repository/platform-tools_r16.0.2-windows.zip already fully downloaded. 
[2013-04-23 04:17:43.475] [Info] Downloading from 'http://dl.google.com/android/repository/tools_r21.1-windows.zip'. 
[2013-04-23 04:17:43.483] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/tools_r21.1-windows.zip' to 60s 
[2013-04-23 04:17:43.693] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\tools_r21.1-windows.zip is a valid ZIP archive 
[2013-04-23 04:17:43.705] [Debug] URL http://dl.google.com/android/repository/tools_r21.1-windows.zip already fully downloaded. 
[2013-04-23 04:17:43.714] [Info] Downloading from 'http://dl.google.com/android/repository/android-2.1_r03-linux.zip'. 
[2013-04-23 04:17:43.725] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/android-2.1_r03-linux.zip' to 60s 
[2013-04-23 04:17:43.936] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\android-2.1_r03-linux.zip is a valid ZIP archive 
[2013-04-23 04:17:43.945] [Debug] URL http://dl.google.com/android/repository/android-2.1_r03-linux.zip already fully downloaded. 
[2013-04-23 04:17:43.953] [Info] Downloading from 'http://dl.google.com/android/repository/android-2.2_r03-linux.zip'. 
[2013-04-23 04:17:43.961] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/android-2.2_r03-linux.zip' to 60s 
[2013-04-23 04:17:44.271] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\android-2.2_r03-linux.zip is a valid ZIP archive 
[2013-04-23 04:17:44.281] [Debug] URL http://dl.google.com/android/repository/android-2.2_r03-linux.zip already fully downloaded. 
[2013-04-23 04:17:44.293] [Info] Downloading from 'http://dl.google.com/android/repository/android-2.3.3_r02-linux.zip'. 
[2013-04-23 04:17:44.302] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/android-2.3.3_r02-linux.zip' to 60s 
[2013-04-23 04:17:44.715] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\android-2.3.3_r02-linux.zip is a valid ZIP archive 
[2013-04-23 04:17:44.724] [Debug] URL http://dl.google.com/android/repository/android-2.3.3_r02-linux.zip already fully downloaded. 
[2013-04-23 04:17:44.733] [Info] Downloading from 'http://dl.google.com/android/repository/android-3.1_r03-linux.zip'. 
[2013-04-23 04:17:44.741] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/android-3.1_r03-linux.zip' to 60s 
[2013-04-23 04:17:44.952] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\android-3.1_r03-linux.zip is a valid ZIP archive 
[2013-04-23 04:17:44.960] [Debug] URL http://dl.google.com/android/repository/android-3.1_r03-linux.zip already fully downloaded. 
[2013-04-23 04:17:44.971] [Info] Downloading from 'http://dl.google.com/android/repository/android-14_r03.zip'. 
[2013-04-23 04:17:44.980] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/android-14_r03.zip' to 60s 
[2013-04-23 04:17:46.500] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\android-14_r03.zip is a valid ZIP archive 
[2013-04-23 04:17:46.508] [Debug] URL http://dl.google.com/android/repository/android-14_r03.zip already fully downloaded. 
[2013-04-23 04:17:46.517] [Info] Downloading from 'http://dl.google.com/android/repository/sysimg_armv7a-14_r02.zip'. 
[2013-04-23 04:17:46.525] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/sysimg_armv7a-14_r02.zip' to 60s 
[2013-04-23 04:17:46.534] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\sysimg_armv7a-14_r02.zip is a valid ZIP archive 
[2013-04-23 04:17:46.642] [Debug] URL http://dl.google.com/android/repository/sysimg_armv7a-14_r02.zip already fully downloaded. 
[2013-04-23 04:17:46.652] [Info] Downloading from 'http://dl.google.com/android/repository/android-15_r03.zip'. 
[2013-04-23 04:17:46.661] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/android-15_r03.zip' to 60s 
[2013-04-23 04:17:46.973] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\android-15_r03.zip is a valid ZIP archive 
[2013-04-23 04:17:46.982] [Debug] URL http://dl.google.com/android/repository/android-15_r03.zip already fully downloaded. 
[2013-04-23 04:17:46.990] [Info] Downloading from 'http://dl.google.com/android/repository/sysimg_armv7a-15_r02.zip'. 
[2013-04-23 04:17:46.999] [Debug] Setting download timeout for 'http://dl.google.com/android/repository/sysimg_armv7a-15_r02.zip' to 60s 
[2013-04-23 04:17:47.108] [Debug] File <USER_HOME>\Temp\Xamarin\downloads\sysimg_armv7a-15_r02.zip is a valid ZIP archive 
[2013-04-23 04:17:47.117] [Debug] URL http://dl.google.com/android/repository/sysimg_armv7a-15_r02.zip already fully downloaded. 
[2013-04-23 04:17:47.125] [Info] Downloading from 'http://dl.google.com/android/ndk/android-ndk-r8d-windows.zip'. 
[2013-04-23 04:17:47.134] [Debug] Setting download timeout for 'http://dl.google.com/android/ndk/android-ndk-r8d-windows.zip' to 60s 
[2013-04-23 04:53:23.445] [Exception] Failed to retrieve response for URL 'http://dl.google.com/android/ndk/android-ndk-r8d-windows.zip' 
[2013-04-23 04:53:23.445] [Exception] System.Net.WebException: The operation has timed out. 
[2013-04-23 04:53:23.445] [Exception] at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size) 
[2013-04-23 04:53:23.445] [Exception] at Xamarin.Web.Installer.DownloadService.DoDownload(Int64 totalBytes, Stream responseStream, Stream outputStream, Object state) 
[2013-04-23 04:53:23.445] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(HttpWebResponse response, String url, Action`4 doDownload, Boolean noCache, Object state) 
[2013-04-23 04:53:23.445] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(String url, Action`4 doDownload, Func`3 webExceptionHandler, Boolean noCache, Object state, Int32 timeout) 
[2013-04-23 04:53:23.960] [Exception] Zip verification exception 
[2013-04-23 04:53:23.960] [Exception] Ionic.Zip.BadReadException: Could not read block - no data! (position 0x0387D7D6) 
[2013-04-23 04:53:23.960] [Exception] at Ionic.Zip.SharedUtilities._ReadFourBytes(Stream s, String message) 
[2013-04-23 04:53:23.960] [Exception] at Ionic.Zip.ZipEntry.HandleUnexpectedDataDescriptor(ZipEntry entry) 
[2013-04-23 04:53:23.960] [Exception] at Ionic.Zip.ZipEntry.ReadEntry(ZipContainer zc, Boolean first) 
[2013-04-23 04:53:23.960] [Exception] at Ionic.Zip.ZipInputStream.GetNextEntry() 
[2013-04-23 04:53:23.960] [Exception] at Xamarin.Web.Installer.Utilities.IsValidFile(String path) 
[2013-04-23 04:53:24.068] [Exception] Error downloading URL 'http://dl.google.com/android/ndk/android-ndk-r8d-windows.zip' requested by 'Android SDK, web exception was thrown. Connection timed out 
[2013-04-23 04:53:24.068] [Exception] System.Net.WebException: The operation has timed out. 
[2013-04-23 04:53:24.068] [Exception] at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size) 
[2013-04-23 04:53:24.068] [Exception] at Xamarin.Web.Installer.DownloadService.DoDownload(Int64 totalBytes, Stream responseStream, Stream outputStream, Object state) 
[2013-04-23 04:53:24.068] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(HttpWebResponse response, String url, Action`4 doDownload, Boolean noCache, Object state) 
[2013-04-23 04:53:24.068] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(String url, Action`4 doDownload, Func`3 webExceptionHandler, Boolean noCache, Object state, Int32 timeout) 
[2013-04-23 04:53:24.068] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(String url, Action`4 doDownload, Boolean noCache, Object state, Int32 timeout) 
[2013-04-23 04:53:24.068] [Exception] at Xamarin.Web.Installer.DownloadService.DownloadItem(DownloadServiceWorkItem item, Boolean firstDownload) 
[2013-04-23 04:53:24.178] [Info] Downloading from 'http://download.xamarin.com/MonoforAndroid/Windows/mono-android-4.6.04000.msi'. 
[2013-04-23 04:53:24.187] [Debug] Setting download timeout for 'http://download.xamarin.com/MonoforAndroid/Windows/mono-android-4.6.04000.msi' to 60s 
[2013-04-23 04:53:24.196] [Exception] Android SDK: download failed with exception. 
[2013-04-23 04:53:24.197] [Exception] System.Net.WebException: The operation has timed out. 
[2013-04-23 04:53:24.197] [Exception] at System.Net.ConnectStream.Read(Byte[] buffer, Int32 offset, Int32 size) 
[2013-04-23 04:53:24.197] [Exception] at Xamarin.Web.Installer.DownloadService.DoDownload(Int64 totalBytes, Stream responseStream, Stream outputStream, Object state) 
[2013-04-23 04:53:24.197] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(HttpWebResponse response, String url, Action`4 doDownload, Boolean noCache, Object state) 
[2013-04-23 04:53:24.197] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(String url, Action`4 doDownload, Func`3 webExceptionHandler, Boolean noCache, Object state, Int32 timeout) 
[2013-04-23 04:53:24.197] [Exception] at Xamarin.Web.Installer.Utilities.DownloadUrl(String url, Action`4 doDownload, Boolean noCache, Object state, Int32 timeout) 
[2013-04-23 04:53:24.197] [Exception] at Xamarin.Web.Installer.DownloadService.DownloadItem(DownloadServiceWorkItem item, Boolean firstDownload) 
[2013-04-23 04:53:24.205] [Info] Status: failed. 
[2013-04-23 04:53:24.214] [Exception] Installation of software item 'Android SDK' failed with exception. 
[2013-04-23 04:53:24.214] [Exception] Xamarin.Web.Installer.InstallException: Download failed. ---> System.Net.WebException: The operation has timed out. 

Answer 1

我已经经历了同样的问题，当你重试了一段时间后，它实际上在后台下载，您会发现，我已经在这样做了多次一天过去了。我甚至已经与以前的版本

Answer 2

点击（重试）只适用于某些cicumstances。在我的win7开发机器上，几次重启，几次重启，我没有运气，做了谷歌搜索，发现这个堆栈问题看到上面的建议（重试），所以我点击每次失败重试...总共107 （每次看起来安装程序正在向前移动2或3 m/b），只是最终“完成”下载整个Andriod SDK以接收最后一条错误消息“从Google服务器下载错误。Andriod SDK“，并且重试按钮不再可用。我每10或15分钟就运行几次（speedtest.net）测试，以确保连接已经启动，并以管理员身份运行安装程序，但没有运气。