执行时

java -jar jenkins-cli.jar -s https://jenkins_url help

由于某种原因，我的连接被拒绝。Jenkins版本是1580.3，用户具有Jenkins服务器的权限，cli
jar是最新的，并且ssh公钥已正确配置。知道是什么原因造成的吗？这是堆栈跟踪是否有帮助：

Exception in thread "main" java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at hudson.cli.CLI.connectViaCliPort(CLI.java:203)
at hudson.cli.CLI.<init>(CLI.java:126)
at hudson.cli.CLIConnectionFactory.connect(CLIConnectionFactory.java:72)
at hudson.cli.CLI._main(CLI.java:466)
at hudson.cli.CLI.main(CLI.java:382)
Suppressed: java.io.EOFException: unexpected stream termination
at hudson.remoting.ChannelBuilder.negotiate(ChannelBuilder.java:331)
at hudson.remoting.Channel.<init>(Channel.java:421)
at hudson.remoting.Channel.<init>(Channel.java:400)
at hudson.remoting.Channel.<init>(Channel.java:396)
at hudson.remoting.Channel.<init>(Channel.java:385)
at hudson.remoting.Channel.<init>(Channel.java:377)
at hudson.remoting.Channel.<init>(Channel.java:353)
at hudson.cli.CLI.connectViaHttp(CLI.java:157)
at hudson.cli.CLI.<init>(CLI.java:130)
... 3 more