Secure connection failed Connecting to blynk.cloud:443

Need Help With My Project
1

I was using an ESP8266 to send date to Blynk Cloud and it worked fine. I upgraded to an ESP32 and it workd for a while, then loses connection to Blynk with the error:
Secure connection failed
Connecting to blynk.cloud:443

Can it be my libraries are not up to date ?
Here is the startup information:

ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x1b (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:4980
load:0x40078000,len:16612
load:0x40080400,len:3480
entry 0x400805b4

Main_Monitor-Sender.ino

.........
Ok
Connected!
  IP Address: 192.168.12.237; MAC Address: xx:xx:xx:DE:E4:3C

WiFi channel: 1
Main_Monitor-Sender.ino

Mode: STA
Channel: 1
SSID (10): ********
Passphrase (12): ********
BSSID set: 0
[9027] 
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v1.3.2 on ESP32

 #StandWithUkraine    https://bit.ly/swua


Blynk connect success.
HTTP server started
[9038] Connecting to blynk.cloud:443
[9567] Certificate OK
[9620] Ready (ping: 52ms).
----------------------------------------

There was no problem with the ESP8266.
I have 2 other ESP32s connected to Blynk and they are OK.

Here ae the includes:

#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "****************"  
#define BLYNK_DEVICE_NAME "Device 1"
#define BLYNK_TEMPLATE_NAME "Device 1"
char auth[] = "*************************";
#define USE_ESP32
#include <esp_now.h>
#include <WiFi.h>
#include <esp_wifi.h>
#include "Wire.h"
#include <OneWire.h> 
#include <DallasTemperature.h>
#include <time.h>
#include <NTPClient.h>
#include <AsyncTCP.h>  // 12-24-24 next 3 lines added for ElegantOTA
#include <ESPAsyncWebServer.h>
#include <ElegantOTA.h>
#include <BlynkSimpleEsp32_SSL.h>
#include <HTTPClient.h>

Last night it went offline at arouind 3:00.
I connected my phone running a USB terminal app and here is what I saw:

[48681308] Secure connection failed
[48681309] Connecting to blynk.cloud:443
[48706809] Secure connection failed
[48706810] Connecting to blynk.cloud:443

I disconnedted the terminal then reconnected, and for some reason this caused the ESP to reboot:

Connected to CP2102 device
    ___  __          __
   / _ )/ /_ _____  / /__
  / _  / / // / _ \/  '_/
 /____/_/\_, /_//_/_/\_\
        /___/ v1.3.2 on ESP32
#StandWithUkraine  https://bit.ly./swua

Blynk connect success.
HTTP server started
[9129] Connecting to blynk.cloud:443
[9653] Certificate OK
[9687] Ready (ping: 33ms).

And then it started working (went online)
Now, more than 12 hours later it is still working.
But I am worried it may fail again.

NOTE: My code also utilizes ElegantOTA and ESP-NOW that sends to 2 devices.
ALSO: I changed my internet provoder to T-Mobile about 2 months ago- I think the internet may briefly be going offline at times.

Thanks in advance- let me know if more info is needed.

2

@mike1950 Please edit your post, using the pencil icon at the bottom, and add triple backticks at the beginning and end of your serial monitor output and your code so that they display correctly.
Triple backticks look like this:
```

Copy and paste these if you can’t find the correct symbol on your keyboard.

Also, snippets of code and serial output that don’t show the connection failure tell us nothing about the possible cause of your problem.

Pete.

3

Hi Pete,

I editted the post. Please see above.

Thanks for your patience.
Mike

4

Nobody is going to be able to suggest possible causes, or ways of dealing with failed reconnection attempts, without seeing your full code at the very least.

However, using NPT and OTA routines that are independent of the Blynk system, and using ESPNow alongside Blynk is also going to make it difficult for community members to understand your code and identify potential issues that could be causing your problem.

Pete.