# How to connect to an XML-RPC service
**URL:** https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205
**Category:** Classic Servoy
**Created:** [April 7, 2017, 10:52am UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205 "2017-04-07T10:52:59Z")
**Posts on this page:** 6
**Page:** 1
### Author:  [@Juan\_Etec](https://forum.servoy.com/u/Juan_Etec)
#### Post date: [April 7, 2017, 10:52am UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205/1 "2017-04-07T10:52:59Z")
Hi all,
I’m trying to connect to an XML-RPC service via the Http plugin without success.
My response comes as a null value.
```auto
var urlServer = "https://www.mensajerianegocios.movistar.es/SrvConexion"; // --- Por defecto es producción.
var _request
var _poster = plugins.http.createNewHttpClient();
_request = _poster.createPostRequest(urlServer);
_request.addHeader("Content-Type", "text/xml");
_request.addHeader("User-Agent","myXMLRPCClient/1.0");
myXml = '\
\
MensajeriaNegocios.enviarSMS\
\
\
USERNAME\
\
\
MYPASSWORD\
\
\
\
\
\
\
\
\
678535170\
Texto SMS 1\
217812\
JuanETEC\
\
\
\
\
\
\
678535170\
Texto SMS 2\
MiRemitente\
\
\
\
\
\
\
\
\
'
_request.addParameter(null, myXml);
//_request.setBodyContent(myXml,"text/xml")
var _response = _request.executeRequest()
```
I have been following this instructions : [https://www.tutorialspoint.com/xml-rpc/ … equest.htm](https://www.tutorialspoint.com/xml-rpc/xml_rpc_request.htm)
Can anyone please give me a hand?
Thanks in advance.
---
### Author:  [@patrick](https://forum.servoy.com/u/patrick)
#### Post date: [April 7, 2017, 11:35am UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205/2 "2017-04-07T11:35:06Z")
Do you have an error in the log? It is very likely a certificate problem.
---
### Author:  [@Juan\_Etec](https://forum.servoy.com/u/Juan_Etec)
#### Post date: [April 7, 2017, 2:40pm UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205/3 "2017-04-07T14:40:41Z")
Yes Patrick this is a certificate problem.
What can I do?
Could you guide me?
I’m Launching the process y a bachtprocessor from a servoy server with a SSL certificate.
```auto
2017-04-07 15:28:27,125 ERROR [BatchProcess: HC_server] com.servoy.j2db.util.Debug - Throwable [A29D9DD3-3DCC-4E33-BE13-4E3CA955832B HC_server]
javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.ssl.Alerts.getSSLException(Unknown Source)
at sun.security.ssl.SSLSocketImpl.fatal(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.Handshaker.fatalSE(Unknown Source)
at sun.security.ssl.ClientHandshaker.serverCertificate(Unknown Source)
at sun.security.ssl.ClientHandshaker.processMessage(Unknown Source)
at sun.security.ssl.Handshaker.processLoop(Unknown Source)
at sun.security.ssl.Handshaker.process_record(Unknown Source)
at sun.security.ssl.SSLSocketImpl.readRecord(Unknown Source)
at sun.security.ssl.SSLSocketImpl.performInitialHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at sun.security.ssl.SSLSocketImpl.startHandshake(Unknown Source)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:535)
at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:403)
at com.servoy.extensions.plugins.http.HttpClient$1.connectSocket(HttpClient.java:105)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304)
at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
at com.servoy.extensions.plugins.http.BaseRequest.executeRequest(BaseRequest.java:212)
at com.servoy.extensions.plugins.http.BaseRequest.js_executeRequest(BaseRequest.java:138)
at com.servoy.extensions.plugins.http.BaseRequest.js_executeRequest(BaseRequest.java:124)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:158)
at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:312)
at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:1774)
at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:837)
at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:158)
at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:406)
at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3204)
at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:156)
at com.servoy.j2db.scripting.ScriptEngine.executeFunction(ScriptEngine.java:664)
at com.servoy.j2db.scripting.ScopesScope.executeGlobalFunction(ScopesScope.java:193)
at com.servoy.j2db.FormManager.makeSolutionSettings(FormManager.java:262)
at com.servoy.j2db.server.headlessclient.WebFormManager.makeSolutionSettings(WebFormManager.java:81)
at com.servoy.j2db.FormManager$1.run(FormManager.java:151)
at com.servoy.j2db.server.headlessclient.SessionClient.invokeAndWait(SessionClient.java:931)
at com.servoy.j2db.server.headlessclient.SessionClient.doInvokeLater(SessionClient.java:921)
at com.servoy.j2db.ClientState.invokeLater(ClientState.java:1728)
at com.servoy.j2db.FormManager.propertyChange(FormManager.java:147)
at java.beans.PropertyChangeSupport.fire(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at javax.swing.event.SwingPropertyChangeSupport.firePropertyChange(Unknown Source)
at java.beans.PropertyChangeSupport.firePropertyChange(Unknown Source)
at com.servoy.j2db.J2DBGlobals.firePropertyChange(J2DBGlobals.java:92)
at com.servoy.j2db.server.headlessclient.SessionClient.solutionLoaded(SessionClient.java:479)
at com.servoy.j2db.ClientState.loadSolutionsAndModules(ClientState.java:1482)
at com.servoy.j2db.server.headlessclient.SessionClient.loadSolution(SessionClient.java:286)
at com.servoy.j2db.server.headlessclient.SessionClient.loadSolution(SessionClient.java:245)
at com.servoy.j2db.server.headlessclient.HeadlessClientFactoryInternal$1.run(HeadlessClientFactoryInternal.java:86)
at com.servoy.j2db.server.headlessclient.HeadlessClientFactoryInternal.createSessionBean(HeadlessClientFactoryInternal.java:109)
at com.servoy.j2db.server.headlessclient.HeadlessClientFactoryInternal.createHeadlessClient(HeadlessClientFactoryInternal.java:52)
at com.servoy.j2db.server.main.Zy.Zc(Zy.java:12)
at com.servoy.j2db.server.main.Zx.run(Zx.java:2)
at java.lang.Thread.run(Unknown Source)
Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target
at sun.security.validator.PKIXValidator.doBuild(Unknown Source)
at sun.security.validator.PKIXValidator.engineValidate(Unknown Source)
at sun.security.validator.Validator.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.validate(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkTrusted(Unknown Source)
at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(Unknown Source)
at org.apache.http.conn.ssl.SSLContextBuilder$TrustManagerDelegate.checkServerTrusted(SSLContextBuilder.java:190)
at sun.security.ssl.AbstractTrustManagerWrapper.checkServerTrusted(Unknown Source)
... 56 more
```
---
### Author:  [@kwpsd](https://forum.servoy.com/u/kwpsd)
#### Post date: [April 7, 2017, 4:05pm UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205/4 "2017-04-07T16:05:58Z")
@Patrick - Just curious…how did you make the leap from ‘null return’ to ‘certificate problem’. I would have interpreted a ‘null return’ as ‘server unavailable’ and would have never guessed ‘certificate problem’.
---
### Author:  [@patrick](https://forum.servoy.com/u/patrick)
#### Post date: [April 7, 2017, 4:12pm UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205/5 "2017-04-07T16:12:44Z")
Null suggests the connection couldn’t even be made, otherwise you would have a response with a success or error. So it either was blocked or failed for other reasons. Https sounds like certificate.
Since you are posting, you will need the certificate, I think. I’m not an expert on this, but the certificate is required, I’d say. That has to be installed in the java environment, which can be done in the Java control panel, Security, Manage certificates. Edit: for web or headless client, that is. The smart client should actually ask you if you want to accept the certificate.
---
### Author:  [@kwpsd](https://forum.servoy.com/u/kwpsd)
#### Post date: [April 7, 2017, 5:01pm UTC](https://forum.servoy.com/t/how-to-connect-to-an-xml-rpc-service/19205/6 "2017-04-07T17:01:09Z")
> Https sounds like certificate.
Ah…I did not pick up on the ‘https’ in the URL. Now I understand the logic in your thinking. Thanks for the explanation!