首先，我在没有系统代理的情况下调用了senkins cli：
java -Djava.net.useSystemProxies=false -jar jenkins-cli.jar -s https://myserver:443 help
收到以下错误：
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:459)
at hudson.cli.CLI.main(CLI.java:382)
Suppressed: java.io.IOException: Premature EOF
at sun.net.www.http.ChunkedInputStream.readAheadBlocking(Unknown Source)
at sun.net.www.http.ChunkedInputStream.readAhead(Unknown Source)
at sun.net.www.http.ChunkedInputStream.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 sun.net.www.protocol.http.HttpURLConnection$HttpInputStream.read(Unknown Source)
at hudson.remoting.ChannelBuilder.negotiate(ChannelBuilder.java:198)
at hudson.remoting.Channel.<init>(Channel.java:419)
at hudson.remoting.Channel.<init>(Channel.java:398)
at hudson.remoting.Channel.<init>(Channel.java:394)
at hudson.remoting.Channel.<init>(Channel.java:383)
at hudson.remoting.Channel.<init>(Channel.java:375)
at hudson.remoting.Channel.<init>(Channel.java:351)
at hudson.cli.CLI.connectViaHttp(CLI.java:157)
at hudson.cli.CLI.<init>(CLI.java:130)
然后我使用了-Djava.net.useSystemProxies=true
有了这个，我得到了这个：
Exception in thread "main" java.io.IOException: Failed to connect to https://myserver:443/
at hudson.cli.CLI.getCliTcpPort(CLI.java:266)
at hudson.cli.CLI.<init>(CLI.java:126)
at hudson.cli.CLIConnectionFactory.connect(CLIConnectionFactory.java:72)
at hudson.cli.CLI._main(CLI.java:459)
at hudson.cli.CLI.main(CLI.java:382)
Suppressed: java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 503 Service Unavailable"
at sun.net.www.protocol.http.HttpURLConnection.doTunneling(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getOutputStream(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getOutputStream(Unknown Source)
at hudson.cli.FullDuplexHttpStream.<init>(FullDuplexHttpStream.java:77)
at hudson.cli.CLI.connectViaHttp(CLI.java:156)
at hudson.cli.CLI.<init>(CLI.java:130)
... 3 more
Caused by: java.io.IOException: Unable to tunnel through proxy. Proxy returns "HTTP/1.1 503 Service Unavailable"
at sun.net.www.protocol.http.HttpURLConnection.doTunneling(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.connect(Unknown Source)
at hudson.cli.CLI.getCliTcpPort(CLI.java:264)
... 4 more
网址来自https://myserver/cli/
能够连接到我的jenkins服务器缺少什么？使用telnet我可以到达端口：
telnet myserver 443
Trying 127.0.0.1...
Connected to myserver.
Escape character is '^]'.