HTTPSGET big latency on HL6528RD

Hi all,

We are trying to open an HTTPS session with mutual authentication to perform a GET operation from HL6528RD (FW version: 2.5.1.11).
When we send AT+KHTTPSGET command, we have big latencies, i.e.:

  • average 20s to have CONNECT response
  • average other 20/30s to have the response itself (GET content)

An example of the AT commands we are using:

AT+KHTTPSCFG=1,“server_url”,server_port,0,7,3, , ,1
AT+KHTTPSGET=1,“path”

This happens with or without server/mutual authentication, and with different servers.
If we do the same with e.g. postman, it takes about 1-2s to have the overall response.
What may it depend on?

Thanks in advance,
Sabino

Hi @sabinocolonna,
I followed your command on our module. It takes about 5-6s to complete. I thinks this the duration looks OK.
at+khttpscfg=1,“google.com

+KHTTPSCFG: 1

OK
at+khttpsget=1,“path”

If your module gets quick response from postman, the reason might be from server that you are connecting to. Please contact administrator for more technical support

Hi @Vianney,

We tried the same HTTPSGET to “google.com” and got different timings for CONNECT response:

  • trial #1: 13s
  • trial #2: 6s
  • trial #3: 12s
  • trial #4: 31s
  • trial #5: 13s

Please, notice that the signal quality is really good:

AT+CSQ --> 31,99

and that we are using a SIMonChip with roaming operator.
May it be a reason of such a latency and variability in our results?
Is your module HL6528RD?

Thanks,
Sabino

Hi @sabinocolonna,
I shared the result from HL6528RD. It got a response from google page within 5- 6 s same your trial #2. I believe it’s OK from the module. There’re many factors causing latency and roaming network might be one of them

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