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WCF: how to detect a gap and get the original context in WsHttpBinding

I have a request-response service method WsHttpBindingthat processes a transaction in a mid-range service (which connects to the database) and returns a response message to the client with the transaction ID.

I have a couple of questions:

  • How can I detect when a client unexpectedly disconnects / fails before receiving a response? I noticed that the channel_faulted event never fires for WsHttpBinding.

  • Assuming # 1 can be achieved, how can I get the original transaction identifier (which was in the outgoing response) so that the transaction is rolled back / reverse that the client did not receive?

Any help is appreciated. Thank.

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<netTcpBinding>
  <binding name="TransactionalTCP" transactionFlow="true">
    <reliableSession enabled="true"/>
  </binding>
</netTcpBinding>
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