Unsolicited ACK's are a bit weird to receive. While I can agree that it
would be nice if the behavior was configurable, it is currently not the
case (as you found out). I guess the case where it makes sense would be in
the case where your opposing system is supporting enhanced
acknowledgements, which HAPI does not really support (the case where an
acknowledgement is sent to you first as a transport ack, and then an
application ack). HAPI only supports a single ack to each message.
On 2 August 2017 at 11:09, Tom Chiverton <t...@extravision.com> wrote:
> I'm receiving this message from another server (I don't know why). We're
> building an interface between our app and a HL7 server, and the first step
> is just getting the HL7 messages off the wire and storing them.
>
> The Reciever implementation is making a hard coded policy decision that my
> application that's using it does not want to know about some HL7 messages.
>
> This should be configurable, at the very least ?
>
> I've had a rough delve through the code, and it seems because Reciever
> isn't an interface, you have to replace whole chunks of other classes as
> well - I think I ended up with over a half dozen cloned classes in my
> package because thing's were private or package and so I couldn't extend
> them easily.
>
> Maybe it would be easier to have a setting (in HapiContext) about what to
> do with them ?
> Tom
>
> On 02/08/17 10:02, Jens Villadsen wrote:
>
> Why would you send an unexpected ACK back to the server?
>
> On 31 July 2017 at 17:00, Tom Chiverton <t...@extravision.com> wrote:
>
>> *AH HA*.
>>
>> There's a 3 year old bug with HAPI [1] where it throws away messages if
>> they are unexpected replies.
>>
>> I don't see a way to replace the Receiver instance in use by SimpleServer
>> ?
>>
>> Tom
>>
>> [1] https://sourceforge.net/p/hl7api/feature-requests/88/?limit=25
>>
>> On 31/07/17 14:51, Tom Chiverton wrote:
>>
>> Hi,
>>
>> Sorry I wasn't clear, but further down my RecivingApplication
>> implementation I do have that :
>>
>> public Message processMessage(Message theMessage, Map<String, Object>
>> theMetadata) throws ReceivingApplicationException, HL7Exception {
>> String encodedMessage = new DefaultHapiContext().getPipePa
>> rser().encode(theMessage);
>> System.out.println("Received message:\n" + encodedMessage +
>> "\n\n");
>>
>> }
>>
>> This never outputs.
>>
>> Tom
>>
>> On 31/07/17 14:46, Jens Villadsen wrote:
>>
>> Take a look at the example found at http://hl7api.sourceforge.n
>> et/xref/ca/uhn/hl7v2/examples/SendAndReceiveAMessage.html and
>> http://hl7api.sourceforge.net/xref/ca/uhn/hl7v2/examples
>> /ExampleReceiverApplication.html
>>
>> What you probably would like to look at is the "processMessage"
>>
>>
>>
>>
>> On 31 July 2017 at 12:05, Tom Chiverton <t...@extravision.com> wrote:
>>
>>> Given
>>>
>>>
>>> public class EvReceiverApplication implements ReceivingApplication {
>>>
>>> public boolean canProcess(Message theIn) {
>>> System.out.println("Received message: canProcess true");
>>> return true;
>>> }
>>>
>>> ....
>>>
>>>
>>> I never see this output when a message is received. So it's like the
>>> receiver is not registered ?
>>>
>>>
>>> I am doing
>>>
>>>
>>> HL7Service server = context.newServer(port, useTls);
>>>
>>> ReceivingApplication handler = new EvReceiverApplication();
>>>
>>> server.registerApplication("*", "*", handler);
>>>
>>> server.startAndWait();
>>>
>>> Tom
>>>
>>>
>>> On 31/07/17 10:24, Tom Chiverton wrote:
>>>
>>> I have used
>>> http://hl7api.sourceforge.net/xref/ca/uhn/hl7v2/examples/Sen
>>> dAndReceiveAMessage.html
>>>
>>> to build a simple app that should listen for all messages, and echo them
>>> to the console ( server.registerApplication("*", "*", handler); ).
>>>
>>>
>>> However, although I get a line from the connectionReceived method, and
>>> none from an output I added to the exceptionHandler, I do not get anything
>>> from my processMessage() code.
>>>
>>>
>>> Java 1.8 on Ubuntu Server, with the latest HAPI library. I can confirm I
>>> am getting a message (admittedly it's MSA is "MSA|AA|245635223|Failure")
>>> with a Wireshark packet capture.
>>>
>>>
>>> Any ideas what could be up ?
>>> --
>>> *Tom Chiverton*
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>>
>>
>> --
>>
>> Med venlig hilsen / Kind regards
>>
>> *Jens Kristian Villadsen*
>> cand.polyt
>>
>> Stålhøjen 24
>> 8240 Risskov
>> Denmark
>>
>> Mobile +4523373806 <23%2037%2038%2006>
>> jenskristianvillad...@gmail.com
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>
>
> --
>
> Med venlig hilsen / Kind regards
>
> *Jens Kristian Villadsen*
> cand.polyt
>
> Stålhøjen 24
> 8240 Risskov
> Denmark
>
> Mobile +4523373806 <23%2037%2038%2006>
> jenskristianvillad...@gmail.com
>
> ______________________________________________________________________
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> ______________________________________________________________________
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--
Med venlig hilsen / Kind regards
*Jens Kristian Villadsen*
cand.polyt
Stålhøjen 24
8240 Risskov
Denmark
Mobile +4523373806
jenskristianvillad...@gmail.com
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