OTAP (HTTPS DNS) Problem with EHS8 module | Telit Cinterion IoT Developer Community
June 28, 2022 - 6:26am, 798 views
Hi,
I've a weird problem with EHS8 module when trying to update via OTAP (HTTPS).
OTAP syslog says: JAD server not found!
When doing this on an ELS61 module it works though, so i think the server is configured well.
Could it be that DNS (HTTPS) Resolution is not working on EHS8 module as expected?
Is the module using DoH or DoT?
ATI1 from EHS8 module:
Cinterion
EHS8
REVISION 03.001
A-REVISION 00.000.14
ATI1 from ELS61 module:
Cinterion
ELS61-E R2
REVISION 02.000
A-REVISION 01.000.05
Best Regards,
Andy
Hello,
There should be some correct MIME settings applied on the server which is described in Java UG. But I suppose that it's done as ELS61 works. Maybe the URL is incorrect. Anyway if you suspect any issue with DNS, please try IP instead of the domain. Could you paste the OTAP trace?
Honestly I don't know if DoH or DoT is used, would have to check it with R&D.
Regards,
Bartłomiej
Hello BARTŁOMIEJ
No the URL is correct since it is the same for ELS61 as well.
Unfortunately to use the ip address directly is not possible, because the server is a so called Azure Function App, which use to work only with DNS.
Here is the OTAP trace without secret informations:
[OTAP] Short message: OTAP_IMPNG
PWD:****
APNORNUM:****
NETUSER:****
NETPWD:****
HTTPUSER:****
HTTPPWD:****
APPDIR:a:
[OTAP] SM ID found
[OTAP] HTTPUSER = ****
[OTAP] HTTPPWD = ****
[OTAP] APNORNUM = ****
[OTAP] NETUSER = ****
[OTAP] NETPWD = ****
[OTAP] Short message: OTAP_IMPNG
PWD:****
JADURL:https://****/App/1.5.24/App.jad
BEARER:gprs
START:install
[OTAP] SM ID found
[OTAP] FILEURL = https://****/App/1.5.24/App.jad
[OTAP] BEARER = GPRS
[OTAP] START = install
[OTAP] ====================================================================
[OTAP] Parameters set for AT procedure:
[OTAP] Hide HTTP Authentication Params: off
[OTAP] SMS Pwd: ****
[OTAP] Ignore SMS PID Check: on
[OTAP] ====================================================================
[OTAP] Parameters set for current procedure:
[OTAP] JAD File URL: https://****/App/1.5.24/App.jad
[OTAP] Hide HTTP Authentication Params: off
[OTAP] Http User: ****
[OTAP] Http Pwd: ****
[OTAP] Bearer: GPRS
[OTAP] Apn : ****
[OTAP] Net User: ****
[OTAP] Net Pwd: ****
[OTAP] Ignore SMS PID Check: on
[OTAP] ====================================================================
[OTAP] Starting OTAP download operation
[OTAP] Stopping all midlets
[OTAP] Midlets stopped
[OTAP] PS detach success
[OTAP] Starting installation
[OTAP] Try to get https://****/App/1.5.24/App.jad ...
[OTAP] ERROR: Server not found.
[OTAP] Transfer finished.
[OTAP] DONE with status: JAD Server Not Found
[OTAP] Operation failed
[OTAP] Reboot now
Best Regards,
Andy
Hello,
I just tried OTAP with EHS6 REVISION 03.001 A-REVISION 00.000.14 and domain name in the link. It did work.
This firmware is really old so maybe the server rejects the connection because the module does not fulfill all the requirements. Maybe it is because the module does not support SNI extension or the required cipher suites or something like that. It is hard to guess. Maybe you should experiment with some other server for these modules or try http connection if possible.
BR,
Bartłomiej