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Connect-Rest failing with Connection to your_host refused

SA-24269

Summary



Getting below exception when trying to connect to Rest service. The REST service is hosted in Pega application.
Both the service and the connector are in the same application.

com.pega.apache.http.conn.HttpHostConnectException: Connection to your_hostURL refused

 

Error Messages



com.pega.apache.http.conn.HttpHostConnectException: Connection to your_hostURL refused
at com.pega.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:158)
at com.pega.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:149)
at com.pega.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:121)
at com.pega.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:573)
at com.pega.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:425)
at com.pega.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:820)
at com.pega.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:754)
at com.pegarules.generated.activity.ra_action_pyinvokerestconnector_b036b22aea542eb41da83b1e1dbee510.step5_circum0(ra_action_pyinvokerestconnector_b036b22aea542eb41da83b1e1dbee510.java:1242)
... 72 more
Caused by:
java.net.ConnectException: A remote host refused an attempted connect operation.
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:383)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:245)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:232)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:377)
at java.net.Socket.connect(Socket.java:539)
at com.ibm.jsse2.tc.connect(tc.java:576)
at com.pega.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:376)
at com.pega.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:148)


Steps to Reproduce



Call rest service from application.


Root Cause



A defect or configuration issue in the operating environment. The error indicates that a firewall or proxy in the middle is refusing the connection.

Resolution



Make the following change to the operating environment:

​Open the required port and make the Rest endpoint URL point specifically to it.

 

Suggest Edit

Published June 17, 2016 - Updated October 8, 2020

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