Spring RestTemplate on Jelastic - Connection Refused when requesting external rest service - java

I have application that need to call Rest service, to do authentication process. The service and my application are in a same server. I used Spring RestTemplate to call it. When it tested in localhost, it works perfectly. But when I deploy it to the cloud server (in this case, Jelastic) I get this error:
I/O error on GET request for "[my_rest_service_address]":Connection refused; nested exception is java.net.ConnectException: Connection refused
All the code is follow this doc : http://docs.spring.io/spring/docs/3.0.x/javadoc-api/org/springframework/web/client/RestTemplate.html. Only the url that changed to my rest url.
Is it happened because jelastic server blocked outbound request? But, both the service and my application are in the same server, why it still blocked?
Please explain to me, what is the problem? Thanks

The http 401 code means that the user that made the request is not authenticated. It can be the user of your webapp or the user used for the rest call.
It can for example that different credentials are used in prod and test, different security schemes in each environment, etc.

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I deployed my API in AWS using Elastic Beanstalk and when I try to make one https request postman or browser i got Connection Refused. If i use http it works well. I've changed the security group, restarted the instances, checked the logs ( got no errors) and nothing.
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Hi I'm develping a web app in Java for a local bank and they have a SOAP Web Service that my app consumes. The app is deployed on GlassFish 3.1.2 and the web service was generated on .Net (I don't know the specifics, I'm new to the project) and everything is connected through a peer to peer VPN.
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Since I can connect to the HTTP service correctly, I believe I have all the trust store and key store issues resolved.
I am connecting to the service using Metro 2.1.1. I have built the client in both Eclipse and Netbeans. I fetch the WSDL from the HTTP site, and using wsimport (with the -extensions flag) I build and execute the clients successfully.
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at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:119)
at com.sun.xml.ws.client.sei.SyncMethodHandler.invoke(SyncMethodHandler.java:89)
at com.sun.xml.ws.client.sei.SEIStub.invoke(SEIStub.java:140)
at $Proxy43.request(Unknown Source)
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I do not have easy access to the WCF service logs - normally there is a 3-6 hour delay between when I request a set of logs and when I can view them.
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If you have access to the service configuration try disabling security context on the endpoint you're using:
<message establishSecurityContext="False" clientCredentialType="UserName"/>
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