HTTPS POST request no memory after some requests

Technical Subjects Software General Function
1

Hi,

I’m working with the Quectel EG915U-EU module (firmware revision EG915UEUABR03A01M08) and running into an issue after performing multiple HTTPS POST requests.

Problem Description

After a few successful requests, the module stops responding properly when trying to read the HTTP response into a file. Specifically, the command:

AT+QHTTPREADFILE="UFS:1.txt",10

Starts returning:

AT+QHTTPREADFILE="UFS:1.txt",10
OK

+QHTTPREADFILE: 729

This happens consistently after several requests only if I read the file. If I don’t read the file (UFS:1.txt), there are no memory issues or errors.

I also tried deleting the file after each request, but the problem persists.

Current AT Command Setup

Initial HTTP and SSL Configuration:

// Set context ID
AT+QHTTPCFG=“contextid”,1

// Allow to output HTTP response header.
AT+QHTTPCFG=“responseheader”,1

// Set SSL context ID
AT+QHTTPCFG=“sslctxid”,1

// Set SSL version to ALL
AT+QSSLCFG=“sslversion”,1,4

// Set SSL cipher to ALL
AT+QSSLCFG=“ciphersuite”,1,0xFFFF

// Perform server and client authentication
AT+QSSLCFG=“seclevel”,1,2

// Ignore invalid cert sign
AT+QSSLCFG=“ignoreinvalidcertsign”,1,1

// Enable server name indication
AT+QSSLCFG=“sni”,1,1

// Set CA certificate
AT+QSSLCFG=“cacert”,1,“UFS:ca.crt”

// Set client certificate
AT+QSSLCFG=“clientcert”,1,“UFS:certs/client.crt”

// Set client key
AT+QSSLCFG=“clientkey”,1,“UFS:keys/client.key”

HTTPS request

// Disable request header
AT+QHTTPCFG=“requestheader”,0

// Set application/json content-type
AT+QHTTPCFG=“contenttype”,4

// Set URL
AT+QHTTPURL=url,80

// Send url

// Send Post
AT+QHTTPPOST=body_len,80,80

// Send body

// Read to file
AT+QHTTPREADFILE=“UFS:1.txt”

Read file

// Open file
AT+QFOPEN=“UFS:1.txt”,2

// Point to start of file
AT+QFSEEK=1027,0,0

// Read file
AT+QFREAD=1027,256

// Close file
AT+QFCLOSE=1027

2

What is the return result of a POST request? 200?

3

Yes the request works fine, If I only do the HTTPS request and don’t do the Read file part I can do how many requests I want. The problem is if I do https + read file sequence, after some requests, it always gives +QHTTPREADFILE: 729.
Looks like doing the Read file, the module is doing some memory leakage.
If I do:

// Reset
AT+CFUN=1,1

// Deactivate the PDP
AT+QIDEACT=1

// Configure PDP
AT+QICSGP=1,1,"internet","","",1

// Do again the initial configurations
// Set HTTP context
// Set SSL
// Set client certificate

After doing this, I can do the request again, I need to reset the module after some requests.

4

pls run

AT+QFLDS=“UFS”

image
image1052×597 56.9 KB

5

This is the storage after give +QHTTPREADFILE: 729

AT+QFLDS="UFS"
+QFLDS: 1370856,1497356

OK

Also

AT+QFLST="*"
+QFLST: "UFS:certs"
+QFLST: "UFS:keys"
+QFLST: "UFS:1.txt",421
+QFLST: "UFS:ca.crt",1090

OK
6

I have sent you the latest firmware version. Please update to the latest version and try again