Mobicents diameter no connection to peer error message - diameter-protocol

Question

I am new to mobicents diameter and followed the example downloaded here.
Executing both ExampleClient and ExampleServer on the same machine with different ports the "Result-code" is 3002
"Error-message" is "No connection to peer"
Where am I wrong?
Protocol error:
DIAMETER_UNABLE_TO_DELIVER 3002
This error is given when Diameter can not deliver the message to
the destination, either because no host within the realm
supporting the required application was available to process the
request, or because Destination-Host AVP was given without the
associated Destination-Realm AVP.
client-jdiameter-config.xml
<?xml version="1.0"?>
<Configuration xmlns="http://www.jdiameter.org/jdiameter-server">
<LocalPeer>
<URI value="aaa://127.0.0.1:1812" />
<IPAddresses>
<IPAddress value="127.0.0.1" />
</IPAddresses>
<Realm value="mobicents.org" />
<VendorID value="0" />
<ProductName value="jDiameter" />
<FirmwareRevision value="1" />
<OverloadMonitor>
<Entry index="1" lowThreshold="0.5" highThreshold="0.6">
<ApplicationID>
<VendorId value="0" />
<AuthApplId value="333333" />
<AcctApplId value="0" />
</ApplicationID>
</Entry>
</OverloadMonitor>
</LocalPeer>
<Parameters>
<AcceptUndefinedPeer value="false" />
<DuplicateProtection value="true" />
<DuplicateTimer value="240000" />
<UseUriAsFqdn value="false" />
<QueueSize value="10000" />
<MessageTimeOut value="60000" />
<StopTimeOut value="10000" />
<CeaTimeOut value="10000" />
<IacTimeOut value="30000" />
<DwaTimeOut value="10000" />
<DpaTimeOut value="5000" />
<RecTimeOut value="10000" />
<Concurrent>
<Entity name="ThreadGroup" size="64" />
<Entity name="ProcessingMessageTimer" size="1" />
<Entity name="DuplicationMessageTimer" size="1" />
<Entity name="RedirectMessageTimer" size="1" />
<Entity name="PeerOverloadTimer" size="1" />
<Entity name="ConnectionTimer" size="1" />
<Entity name="StatisticTimer" size="1" />
</Concurrent>
</Parameters>
<Network>
<Peers>
<Peer name="aaa://127.0.0.1:3868" attempt_connect="true" rating="1" />
</Peers>
<Realms>
<Realm name="mobicents.org" peers="127.0.0.1"
local_action="LOCAL" dynamic="false" exp_time="1">
<ApplicationID>
<VendorId value="0" />
<AuthApplId value="333333" />
<AcctApplId value="0" />
</ApplicationID>
</Realm>
</Realms>
</Network>
<Extensions />
</Configuration>
server-jdiameter-config.xml
<?xml version="1.0"?>
<Configuration xmlns="http://www.jdiameter.org/jdiameter-server">
<LocalPeer>
<URI value="aaa://127.0.0.1:3868" />
<IPAddresses>
<IPAddress value="127.0.0.1" />
</IPAddresses>
<Realm value="mobicents.org" />
<VendorID value="0" />
<ProductName value="jDiameter" />
<FirmwareRevision value="1" />
<OverloadMonitor>
<Entry index="1" lowThreshold="0.5" highThreshold="0.6">
<ApplicationID>
<VendorId value="0" />
<AuthApplId value="333333" />
<AcctApplId value="0" />
</ApplicationID>
</Entry>
</OverloadMonitor>
</LocalPeer>
<Parameters>
<!-- set to true, we can safely remove client def in this case -->
<AcceptUndefinedPeer value="true" />
<DuplicateProtection value="true" />
<DuplicateTimer value="240000" />
<UseUriAsFqdn value="false" />
<QueueSize value="10000" />
<MessageTimeOut value="60000" />
<StopTimeOut value="10000" />
<CeaTimeOut value="10000" />
<IacTimeOut value="30000" />
<DwaTimeOut value="10000" />
<DpaTimeOut value="5000" />
<RecTimeOut value="10000" />
<Concurrent>
<Entity name="ThreadGroup" size="64" />
<Entity name="ProcessingMessageTimer" size="1" />
<Entity name="DuplicationMessageTimer" size="1" />
<Entity name="RedirectMessageTimer" size="1" />
<Entity name="PeerOverloadTimer" size="1" />
<Entity name="ConnectionTimer" size="1" />
<Entity name="StatisticTimer" size="1" />
</Concurrent>
</Parameters>
<Network>
<Peers>
<!-- our client, lets define it -->
<Peer name="aaa://127.0.0.1:1812" attempt_connect="false"
rating="1" />
</Peers>
<Realms>
<Realm name="mobicents.org" peers="127.0.0.1" local_action="LOCAL" dynamic="false" exp_time="1">
<ApplicationID>
<VendorId value="0" />
<AuthApplId value="333333" />
<AcctApplId value="0" />
</ApplicationID>
</Realm>
</Realms>
</Network>
<Extensions />
</Configuration>