ReleaseResponse wrapped in GatewayResponse leads to an exception

By avenging_playmate295 , 29 May, 2025
Forums
Gurux.DLMS

Hi!

When communicating with a meter through a gateway, there is a  GXDLMSException("Invalid reply. The client has closed the connection.") thrown for a successful ReleaseResponse wrapped in GatewayResponse.

I believe the reason is that this peace of code doesn't recognize it: https://github.com/Gurux/Gurux.DLMS.Net/blob/5284708bd1b9823d9d9f817223dc2f5993deeb02/Development/GXDLMS.cs#L5658-L5665

Example packet: 

0001000100110025E7030B38313030303133353537346315800100BE10040E0800065F1F040000181D01820007
<WRAPPER len="45" >
<TargetAddress Value="1" />
<SourceAddress Value="17" />
<PDU>
<GatewayResponse>
 <NetworkId Value="3" />
 <PhysicalDeviceAddress Value="3831303030313335353734" />
 <ReleaseResponse>
   <Reason Value="Normal" />
   <InitiateResponse>
     <NegotiatedDlmsVersionNumber Value="6" />
     <ProposedConformance>
       <ConformanceBit Name="Action" />
       <ConformanceBit Name="SelectiveAccess" />
       <ConformanceBit Name="Set" />
       <ConformanceBit Name="Get" />
       <ConformanceBit Name="BlockTransferWithSetOrWrite" />
       <ConformanceBit Name="BlockTransferWithGetOrRead" />
     </NegotiatedConformance>
     <NegotiatedMaxPduSize Value="386" />
     <VaaName Value="7" />
   </InitiateResponse>
 </ReleaseResponse>
</GatewayResponse>
</PDU>
</WRAPPER>