In the server_evClientSubmitSm event handler method the property submitSm.Response defines the response on the SubmitSm request. Library sends this response after the method is executed. For the MessageComposer this doesn't work. You can disable automatically response sending and send it with SendRe...

If you want to send "$£¥€" as 0x24A3A5A4 in Default data coding, you need to change the mapping this way: client.EncodingMapper.MapEncoding(DataCodings.Default, new System.Text.Encoding(1252)); and when you send the message you need to use DataCodings.Default . The same way you can set the encoding ...

You need to change .NET encoding for Latin1 data coding in the client encoding mapper:

The value of the user_message_reference parameter can take only 2 bytes. Please use ushort type:

The smpp stream looks correct. I will try to examine this case today and understand why wireshark considers it as malformed packet.

vikarius wrote: ↑

Tue Jul 13, 2021 1:16 pm

How can I switch on and use logging functionality?

https://docs.inetlab.com/smpp/v2.9/arti ... gging.html

Samples with some popular logging frameworks https://gitlab.com/inetlab/smpp-samples/

vikarius wrote: ↑

Tue Jul 13, 2021 1:16 pm

We use 2.9.9 version.

Please update to latest version 2.9.12

some possible reasons of such behavior:
- smpp client waits until all received PDUs are processed.
- evDisconnected event handler method in the application does some processing

Hi vikarius,

Which library version are you using now?
Is library logging enabled in your application?

I think the new SMSC doesn't support user_message_reference TLV parameter. Better to ask the SMSC directly.

Hi If you send test SMS to the server created with SmppServer class, you should subscribe on evClientSubmitSm event. The ESME_RSUBMITFAIL status is returned when the SmppServer instance is not subscribed on this event. If you send to the third-party SMPP server, you have to ask your provider for the...

When you start UpdateMessageStatus task, the DeliverSmResp will be sent at the same time without waiting for task completion. If you want to send response after task completion you need to send it manually as it described in "Control SMPP responses" article. without blocking the main thread from con...

The same way you can implement evDeliverSm event handler method.

In this case I would implement manual response sending
https://docs.inetlab.com/smpp/v2.9/arti ... onses.html

Yes, SmppClient is thread-safe.

Hi bencover, SmppClient represents a connection to the SMPP server. You need to create at least one SmppClient instance for each provider. In general you should keep the connection with SMPP server alive. The connection recovery feature helps you here. The extension method RetryUntilConnectedAsync h...