Sending photos from SD is successful, but I don't receive them in my Telegram chat.

[javi-14]

(Update: Example PhotoFromURL.ino works perfectly, I can receive correctly that photo from link)

Hello everyone, first of all thanks for this amazing project.

I am having some issue trying to send a photo from an SD card in a ESP32-CAM module (Ai Thinker). I am using the "PhotoFromSD.ino" example, adapted for ESP32 and SD_MMC fuctionality. My SD card works correctly, and inside it contains a few images. The library version that I am using is 1.1.0 .

I have already checked that the image is in the SD card and the name is correct. Even the sent() funcition is successful, because I recieve the confirmation in my serial port. But somehow, I never receive the image in my Telegram chat. I have checked that I can recieve text messages from my bot correctly, so my problem is just with images.

Here is my serial monitor after sending a few messages to the bot.

got response /picture2.jpg....was successfully sent got response /picture2.jpg....was successfully sent got response /picture2.jpg....was successfully sent got response /picture2.jpg....was successfully sent got response /picture2.jpg....was successfully sent

And here is the code that I am using (library, definitions and setup are just ok I think).

void loop() {

   if (millis() > Bot_lasttime + Bot_mtbs)  {
    int numNewMessages = bot.getUpdates(bot.last_message_received + 1);

    while(numNewMessages) {
      Serial.println("got response");

      String chat_id = bot.messages[0].chat_id;
      String file_name = "/picture2.jpg";

      myFile = SD_MMC.open(file_name);

      if (myFile) {
        Serial.print(file_name);
        Serial.print("....");
  
        //Content type for PNG image/png
        String sent = bot.sendPhotoByBinary(chat_id, "image/jpeg", myFile.size(),
          isMoreDataAvailable,
          getNextByte);

        bot.sendMessage(chat_id, "Hi:","");         //THIS WORKS
        bot.sendMessage(chat_id, chat_id,"");       //THIS WORKS
  
        if (sent) {
          Serial.println("was successfully sent");  //THIS IS PRINTED IN MY SERIAL MONITOR
        } else {
          Serial.println("was not sent");
        }
  
        myFile.close();
    } else {
      // if the file didn't open, print an error:
      Serial.println("error opening photo");
    }
      numNewMessages = bot.getUpdates(bot.last_message_received + 1);
    }
    Bot_lasttime = millis();
  }
}

bool isMoreDataAvailable(){
  return myFile.available();
}

byte getNextByte(){
  return myFile.read();
}

Thank you all in advance.

[ambanmba]

Did this ever get resolved? I now have this problem on a piece of code that works perfectly on on ESP32 but not on two others. Exactly the same symptoms and the code is very similar.

[javi-14]

Did this ever get resolved? I now have this problem on a piece of code that works perfectly on on ESP32 but not on two others. Exactly the same symptoms and the code is very similar.

Hello, I have never come back to this, so I have no idea. I didn't continue with the project.

[ambanmba]

With debugging switched to maximum you can see there is a problem in ssl_client.cpp. If you send very small images (small icons and such) that are about the same size as a text message they go through. But anything largish (100k) triggers this error. I still can't figure out why it's only affecting some of my ESP32s running the exact same code.

[ambanmba]

I was able to solve this problem be replacing the WiFiClientSecure library with the source that’s dated 2-Oct-19. When I upgraded my Mac to Big Sur, I also had to upgrade the ESP32 library - and that one also has a newer WiFiClientSecure which doesn’t work on larger files.

The working version of WiFiClientSecure library is in the esp32-1.0.4 package on GitHub.

[javi-14]

Thank you, @ambanmba

[akil1947]

I was able to solve this problem be replacing the WiFiClientSecure library with the source that’s dated 2-Oct-19. When I upgraded my Mac to Big Sur, I also had to upgrade the ESP32 library - and that one also has a newer WiFiClientSecure which doesn’t work on larger files.

The working version of WiFiClientSecure library is in the esp32-1.0.4 package on GitHub.

thanks! this worked!