我正在尝试安装GitHub插件，但由于错误而状态为失败，
java.net.SocketTimeoutException: Read timed out
at java.net.SocketInputStream.socketRead0(Native Method)
at java.net.SocketInputStream.socketRead(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.net.SocketInputStream.read(Unknown Source)
at java.io.BufferedInputStream.read1(Unknown Source)
at java.io.BufferedInputStream.read(Unknown Source)
at sun.net.www.MeteredStream.read(Unknown Source)
at java.io.FilterInputStream.read(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(Unknown Source)
at org.apache.commons.io.input.ProxyInputStream.read(ProxyInputStream.java:77)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1139)
Caused: java.io.IOException: Failed to load http://updates.jenkins-ci.org/download/plugins/git/3.9.1/git.hpi to C:\Program Files (x86)\Jenkins\plugins\git.jpi.tmp
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1144)
Caused: java.io.IOException: Failed to download from http://updates.jenkins-ci.org/download/plugins/git/3.9.1/git.hpi (redirected to: http://ftp-nyc.osuosl.org/pub/jenkins/plugins/git/3.9.1/git.hpi)
at hudson.model.UpdateCenter$UpdateCenterConfiguration.download(UpdateCenter.java:1178)
at hudson.model.UpdateCenter$DownloadJob._run(UpdateCenter.java:1715)
at hudson.model.UpdateCenter$InstallationJob._run(UpdateCenter.java:1978)
at hudson.model.UpdateCenter$DownloadJob.run(UpdateCenter.java:1689)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at hudson.remoting.AtmostOneThreadExecutor$Worker.run(AtmostOneThreadExecutor.java:112)
at java.lang.Thread.run(Unknown Source)
我的互联网连接正常，但无法解决此问题。