I m executing a java programme to run a jenkins job ( name "terraform-example" ) which runs on the same machine it works fine. Here is the code 

import java.net.URI;

import com.offbytwo.jenkins.JenkinsServer;
import com.offbytwo.jenkins.model.BuildWithDetails;

public class Main {
    public static void main(String[] args) {

        try

{             JenkinsServer jenkinsServer = new JenkinsServer(new URI("http://localhost:8080/"),"admin","apitoken");          //            JenkinsServer jenkinsServer = new JenkinsServer( URI.create("http://192.168.1.207:8080/"),"admin","apitoken");             JenkinsTriggerHelper triggerHelper = new JenkinsTriggerHelper(jenkinsServer);             BuildWithDetails details = triggerHelper.triggerJobAndWaitUntilFinished("terraform-example");                      if (details!=null)                 System.out.println("LOGS " + details.getConsoleOutputText());             else                 System.out.println("details not found " );                      }

catch (Exception e)

{             e.printStackTrace();         }

    }    
}

 

Out put

 

LOGS Started by user Sudipta Ghosh
[Pipeline] Start of Pipeline
[Pipeline] node
Running on Jenkins in C:\Users\SGHOSH43\.jenkins\workspace\terraform-example
[Pipeline] {
[Pipeline] stage
[Pipeline]

{ (Pre Build Cleanup) [Pipeline] echo Workspace cleaning operation will start now. [Pipeline] cleanWs [WS-CLEANUP] Deleting project workspace... [WS-CLEANUP] Deferred wipeout is used... [WS-CLEANUP] done [Pipeline] echo Workspace cleaned [Pipeline] }

[Pipeline] // stage
[Pipeline] stage
[Pipeline]

{ (Execute Maven to Build Application) [Pipeline] echo MAVEN_HOME = C:\apache-maven-3.8.6 [Pipeline] echo JAVA_HOME = C:\Program Files\Eclipse Foundation\jdk-11.0.12.7-hotspot [Pipeline] }

[Pipeline] // stage
[Pipeline] }
[Pipeline] // node
[Pipeline] End of Pipeline
Finished: SUCCESS

 

when I point to a remote jenkins server it throws exception. though port is open and web url can be accessed from remote

 

 

org.apache.http.conn.HttpHostConnectException: Connect to 192.168.1.207:8080 [/192.168.1.207] failed: Connection timed out: connect
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:156)
    at org.apache.http.impl.conn.PoolingHttpClientConnectionManager.connect(PoolingHttpClientConnectionManager.java:376)
    at org.apache.http.impl.execchain.MainClientExec.establishRoute(MainClientExec.java:393)
    at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:236)
    at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:186)
    at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
    at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:110)
    at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:83)
    at com.offbytwo.jenkins.client.JenkinsHttpClient.get(JenkinsHttpClient.java:149)
    at com.offbytwo.jenkins.JenkinsServer.getJob(JenkinsServer.java:283)
    at com.offbytwo.jenkins.JenkinsServer.getJob(JenkinsServer.java:270)
    at com.capgemini.terraform.parser.JenkinsTriggerHelper.triggerJobAndWaitUntilFinished(JenkinsTriggerHelper.java:154)
    at com.capgemini.terraform.parser.JenkinsTriggerHelper.triggerJobAndWaitUntilFinished(JenkinsTriggerHelper.java:53)
    at com.capgemini.terraform.parser.Main.main(Main.java:17)
Caused by: java.net.ConnectException: Connection timed out: connect
    at java.base/java.net.PlainSocketImpl.connect0(Native Method)
    at java.base/java.net.PlainSocketImpl.socketConnect(PlainSocketImpl.java:101)
    at java.base/java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:399)
    at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:242)
    at java.base/java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:224)
    at java.base/java.net.SocksSocketImpl.connect(SocksSocketImpl.java:392)
    at java.base/java.net.Socket.connect(Socket.java:609)
    at org.apache.http.conn.socket.PlainConnectionSocketFactory.connectSocket(PlainConnectionSocketFactory.java:75)
    at org.apache.http.impl.conn.DefaultHttpClientConnectionOperator.connect(DefaultHttpClientConnectionOperator.java:142)
    ... 14 more