WiFiClientSecure connect memory leak

[serpetti]

Board

ESP32 Dev Module

Device Description

Every time I create a connection with WiFiClientSecure library I looseabout 100B of heap memory. Everything works, I connect(), I get data and I stop(). But the during next connect() I loose other memory.
Thanks

Hardware Configuration

esp32 dev kit 1 without PINs used

Version

latest master

IDE Name

Platform IO

Operating System

Windows 10

Flash frequency

40MHz

PSRAM enabled

no

Upload speed

115200

Description

Memory leak

Sketch

wifiClientSecure = new WiFiClientSecure();

        wifiClientSecure->setCACert(root_ca);

        if (!wifiClientSecure->connect("www.hamqsl.com", 443))
            Serial.println("Connection failed!");
        else
        {
            wifiClientSecure->println("GET https://www.hamqsl.com/solarxml.php HTTP/1.0");
            wifiClientSecure->println("Host: www.hamqsl.com");
            wifiClientSecure->println("Connection: close");
            wifiClientSecure->println();
            
            while (wifiClientSecure->connected())
            {
                String line = wifiClientSecure->readStringUntil('\n');
                if (line == "\r")
                {
                    break;
                }
            }            
            
            int len=0;
            while (wifiClientSecure->available())
            {
                char c = wifiClientSecure->read();  
                xmlRaw += c;     
                len++;
            }
            
            wifiClientSecure->flush();
            wifiClientSecure->stop();                 
    
            Serial.Println(xmlRaw);
        }   
        if(wifiClientSecure) delete wifiClientSecure;

Debug Message

No messages, only leak

Other Steps to Reproduce

No response

I have checked existing issues, online documentation and the Troubleshooting Guide

• I confirm I have checked existing issues, online documentation and Troubleshooting guide.

[mrengineer7777]

Possibly related to PR #6062?

[serpetti]

Hi, thank you for your answer, I've read #6062, and I've tried to make only one persistent instance of WiFiClientSecure with only one CA certificate assignation, but seems that the leak appear on WiFiClientSecure connect() method.

[everslick]

are you sure, your socket is not in FIN_WAIT state? does the memory return after some time? like 3 minutes?

[serpetti]

Hi Everslick and thank you for your answer. I've to check for socket status, but I'm sure that memory remains occupied even after dozens of minutes

[VojtechBartoska]

Hello, can you please retest this on v2.0.3-rc1? Is it still relevant?

[VojtechBartoska]

I'm closing the issue as expired due to no answer.

If needed, please reopen it.

Thanks for understanding.