SPAACARS

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4 months 1 week ago #17420 by chili
Replied by chili on topic SPAACARS
John, going to do a short flight and submit it without using ECON and se what results I get, I get off work at 1900 EST so Ill try then,

Regards

Chili

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4 months 1 week ago #17421 by chili
Replied by chili on topic SPAACARS
K, John just did a quick flight from CSR to PANC, and file the PIREP without ECON being enabled and it was successful. Once I get settle Ill go through my logs and see if I find any differences.

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4 months 6 days ago - 4 months 6 days ago #17422 by jer029
Replied by jer029 on topic SPAACARS
Thanks Chili,

That points to an intermittent connection issue with our server.  Both Econ Mode and non-Econ Mode use the same transmission code.  The only difference is that Econ Mode forces the transmission of the pirep automatically upon landing and then prevents subsequent sending of the pirep.  The attempt to send is only done one time and if it returns error there is no other chance to resend the pirep.  In contrast, Non-Econ Mode does not auto-send the pirep but requires the pilot to manually send the pirep by pushing the "send" button.  It will only disable the "send" button upon a successful upload return message from the server in order to prevent resending the same pirep multiple times.  However, if the pirep fails to be received (and returns an error message), the "send" button is not disabled, allowing the pilot to try multiple times to resend the pirep by pushing the button again and again until it is successful.

So...to summarize, the same routine sends the pirep with both Econ and Non-Econ mode, so it must by an intermittent connection problem between the user's computer and the server I would think.

The question is what to do to correct the problem (if I've correctly identified it).  I'm guessing I will start by contacting our provider about the issue and have them run some diagnostics.  If that fails and the problem continues, I'll change SPAACARS Econ Mode to make multiple attempts until it is successful or fails a certain number of times (to avoid an infinite loop in the event there is a complete connection failure and not just an intermittent problem). 

John

John Rogers
Webmaster
Last edit: 4 months 6 days ago by jer029.

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4 months 6 days ago #17423 by chili
Replied by chili on topic SPAACARS
Excellent explanation, Ill put my Network engineer hat on for a bit, and see what I can find on my end, I have the time of the ECON PIREP failure, so I know the timeline to search for, also I'll run Wireshark on my PC and see what I can find.

Thanks John

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4 months 6 days ago #17424 by chili
Replied by chili on topic SPAACARS
Good Afternoon John; I just submitted a new Econ flight PIREP and it was successful! I checked the netstat logs and see successful established connections to your cloud services.
and no difference in the connections status when it was not working and now.
here is the report:

Airline: Northern Express Flight: 902321 CSR-PANC
Revenue:
Passenger Revenue 14.82
Cargo Revenue 17.87
Total Revenue 32.69
Variable Costs:
Fuel Cost 148.05
Operating Costs: 71.21
Fixed Costs:
Cost of Ownership: 34.40
Total Costs: 253.66
Penalties:
Fuel Penalty: 0.00
Hard Landing Penalty: 0.00
Excessive G-Force Penalty: 0.00
Total Penalties: 0.00
Total Profit: -220.97
Comments: Passengers impressed by soft landing (Landing Rate: -192.24). Passengers enjoyed the flight - very professional.

The Netstat log:
Name: server-216-137-45-40.atl56.r.cloudfront.net
Address: 216.137.45.40
Name: server-216-137-45-55.atl56.r.cloudfront.net
Address: 216.137.45.55

TCP 192.168.1.9:51731 server-216-137-45-55:https ESTABLISHED
TCP 192.168.1.9:51733 ec2-18-207-85-246:https TIME_WAIT
TCP 192.168.1.9:51740 static:https TIME_WAIT
TCP 192.168.1.9:51741 13.107.43.12:https ESTABLISHED
TCP 192.168.1.9:51748 static:https TIME_WAIT
TCP 192.168.1.9:51749 20.189.173.4:https ESTABLISHED
TCP 192.168.1.9:51751 a184-50-56-22:https ESTABLISHED
TCP 192.168.1.9:51752 a184-50-56-22:https ESTABLISHED

Hope this helps, but as I mentioned above, I just submitted a new ECON PIREP and it went through successfully!

Regards

Chili

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4 months 5 days ago #17425 by jer029
Replied by jer029 on topic SPAACARS
Thanks Chili,

I'll leave things as they are for now, but please report any future connection issues and I'll move forward on contacting our service provider to start with and possibly adding code to SPAACARs to make multiple send attempts before timing out.

John

John Rogers
Webmaster

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