Coonection Refused

[Shahzainali]

Hi, here are logs, I am simple writing data to realtime, Streaming data works perfectly,, I faced this issue suddenly, can you please help.

Thanks

Connected with IP: 192.168.1.105

[V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 216348 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [V][ssl_client.cpp:195] start_ssl_client(): Performing the SSL/TLS handshake... [V][ssl_client.cpp:216] start_ssl_client(): Verifying peer X.509 certificate... [V][ssl_client.cpp:225] start_ssl_client(): Certificate verified. [V][ssl_client.cpp:240] start_ssl_client(): Free internal heap after TLS 175132 [V][ssl_client.cpp:279] send_ssl_data(): Writing HTTP request... [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 171060 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [V][ssl_client.cpp:195] start_ssl_client(): Performing the SSL/TLS handshake... [V][ssl_client.cpp:216] start_ssl_client(): Verifying peer X.509 certificate... [V][ssl_client.cpp:225] start_ssl_client(): Certificate verified. [V][ssl_client.cpp:240] start_ssl_client(): Free internal heap after TLS 131592 [V][ssl_client.cpp:279] send_ssl_data(): Writing HTTP request... [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 127516 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [V][ssl_client.cpp:195] start_ssl_client(): Performing the SSL/TLS handshake... [V][ssl_client.cpp:216] start_ssl_client(): Verifying peer X.509 certificate... [V][ssl_client.cpp:225] start_ssl_client(): Certificate verified. [V][ssl_client.cpp:240] start_ssl_client(): Free internal heap after TLS 88044 [V][ssl_client.cpp:279] send_ssl_data(): Writing HTTP request... [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 83912 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [E][ssl_client.cpp:33] _handle_error(): [start_ssl_client():190]: (-32512) SSL - Memory allocation failed [E][WiFiClientSecure.cpp:132] connect(): start_ssl_client: -32512 [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 85444 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [E][ssl_client.cpp:33] _handle_error(): [start_ssl_client():190]: (-32512) SSL - Memory allocation failed [E][WiFiClientSecure.cpp:132] connect(): start_ssl_client: -32512 [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 84940 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [E][ssl_client.cpp:33] _handle_error(): [start_ssl_client():190]: (-32512) SSL - Memory allocation failed [E][WiFiClientSecure.cpp:132] connect(): start_ssl_client: -32512 [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 83740 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [E][ssl_client.cpp:33] _handle_error(): [start_ssl_client():190]: (-32512) SSL - Memory allocation failed [E][WiFiClientSecure.cpp:132] connect(): start_ssl_client: -32512 [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 83428 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [E][ssl_client.cpp:33] _handle_error(): [start_ssl_client():190]: (-32512) SSL - Memory allocation failed [E][WiFiClientSecure.cpp:132] connect(): start_ssl_client: -32512 [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. [V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 83112 [V][ssl_client.cpp:58] start_ssl_client(): Starting socket [V][ssl_client.cpp:93] start_ssl_client(): Seeding the random number generator [V][ssl_client.cpp:102] start_ssl_client(): Setting up the SSL/TLS structure... [I][ssl_client.cpp:156] start_ssl_client(): WARNING: Use certificates for a more secure communication! [V][ssl_client.cpp:180] start_ssl_client(): Setting hostname for TLS session... [E][ssl_client.cpp:33] _handle_error(): [start_ssl_client():190]: (-32512) SSL - Memory allocation failed [E][WiFiClientSecure.cpp:132] connect(): start_ssl_client: -32512 [V][ssl_client.cpp:248] stop_ssl_socket(): Cleaning SSL connection. FAILED REASON: connection refused

[mobizt]

[V][ssl_client.cpp:56] start_ssl_client(): Free internal heap before TLS 83740

Free heap is not enough for mbedTLS to work. It requires > 100k before start SSL handshake.

You may need to reduce ram usage of your code.

[Shahzainali]

Hi, I have tried but no success can you please help me here is my code..

#include <WiFi.h>
//#include "types.h"
#include <FirebaseESP32.h>
#include <HardwareSerial.h>

#include <TinyGPS++.h>"
TinyGPSPlus gps;

bool statusL1 = true;
bool statusL2 = true;
bool statusL3 = true;

bool faultL1 = false;
HardwareSerial SerialGPS(1);

#define LIGHT1 13 
#define L1INPUT 34

#define LIGHT2 12 
#define L2INPUT 35

#define LIGHT3 14 
#define L3INPUT 32

#define LDRINPUT 33
#define AMPEREINPUT 39

#define L1INPUTF 36

// setting PWM properties

const int ledChannel1 = 0;
const int ledChannel2 = 2;;
const int ledChannel3 = 3;
const int freq = 5000;
const int resolution = 10;

//Define FirebaseESP32 data object

FirebaseData firebaseData;
FirebaseData firebaseDataCallback1;
FirebaseData firebaseDataCallback2;
FirebaseData firebaseDataCallback3;

#define RXD2 16
#define TXD2 17

void setup()
{
  Serial.begin(115200);
  SerialGPS.begin(9600, SERIAL_8N1, 16, 17);
  Serial.println("Serial Txd is on pin: " + String(TX));
  Serial.println("Serial Rxd is on pin: " + String(RX));
Serial.println(true);
  // We start by connecting to a WiFi network
  WiFi.begin("xxxx", "xxxx");
  Serial.print("Connecting to Wi - Fi");
  while (WiFi.status() != WL_CONNECTED)
  {
    Serial.print(".");
    delay(300);
  }
  Serial.println();
  Serial.print("Connected with IP: ");
  Serial.println(WiFi.localIP());
  Serial.println();
  Firebase.begin("xxxx, "xxxx");
  Firebase.reconnectWiFi(true);
  //Firebase.enableClassicRequest(firebaseData, true);

Firebase.setStreamCallback(firebaseDataCallback1, streamCallback1, streamTimeoutCallback);
Firebase.setStreamCallback(firebaseDataCallback2, streamCallback2, streamTimeoutCallback);
Firebase.setStreamCallback(firebaseDataCallback3, streamCallback3, streamTimeoutCallback);

if (!Firebase.beginStream(firebaseDataCallback1, "/lights/l1/led_power"))
{
  //Could not begin stream connection, then print out the error detail
  Serial.println(firebaseDataCallback1.errorReason());
}
if (!Firebase.beginStream(firebaseDataCallback2, "/lights/l2/led_power"))
{
  Serial.println(firebaseDataCallback2.errorReason());
}
if (!Firebase.beginStream(firebaseDataCallback3, "/lights/l3/led_power"))
{
  Serial.println(firebaseDataCallback3.errorReason());
}

  pushFirebase("/shahzain/isfault/", true);

//Light1 
 pinMode(LIGHT1,OUTPUT);
 pinMode(L1INPUT, INPUT);

 pinMode(LIGHT2,OUTPUT);
 pinMode(L2INPUT, INPUT);

 pinMode(LIGHT3,OUTPUT);
 pinMode(L3INPUT, INPUT);

 pinMode(LDRINPUT, INPUT);

   ledcSetup(ledChannel1, freq, resolution);
  ledcAttachPin(LIGHT1, ledChannel1);

   ledcSetup(ledChannel2, freq, resolution);
  ledcAttachPin(LIGHT2, ledChannel2);

   ledcSetup(ledChannel3, freq, resolution);
  ledcAttachPin(LIGHT3, ledChannel3);
//endLight1
  delay(500);
}

void streamTimeoutCallback(bool timeout)
{
  if(timeout){
    //Stream timeout occurred
    Serial.println("Stream timeout, resume streaming...");
  }  
}

void streamCallback1(StreamData data)
{
  Serial.println("Stream Data...");
  Serial.println(data.streamPath());
  Serial.println(data.dataPath());
  Serial.println(data.dataType());

  if(data.dataType() == "boolean")
    { 
    statusL1 = data.boolData();
    Serial.println(statusL1);
    }

}
void streamCallback2(StreamData data)
{
  Serial.println("Stream Data...");
  Serial.println(data.streamPath());
  Serial.println(data.dataPath());
  Serial.println(data.dataType());

  if(data.dataType() == "boolean")
    { 
    statusL2 = data.boolData();
    Serial.println(statusL1);
    }

}
void streamCallback3(StreamData data)
{
  Serial.println("Stream Data...");
  Serial.println(data.streamPath());
  Serial.println(data.dataPath());
  Serial.println(data.dataType());

  if(data.dataType() == "boolean")
    { 
    statusL3 = data.boolData();
    Serial.println(statusL1);
    }

}
//" / l1 / isfault"
void pushFirebase(String path, String value) {
  if (Firebase.setString(firebaseData, path, value))
  {
    Serial.println("PASSED");
    Serial.println("PATH: " + firebaseData.dataPath());
    Serial.println("TYPE: " + firebaseData.dataType());
    Serial.println("ETag: " + firebaseData.ETag());
    Serial.print("VALUE: ");
    // printResult(firebaseData);
    Serial.println("------------------------------------");
    Serial.println();
  }
  else
  {
    Serial.println("FAILED");
    Serial.println("REASON: " + firebaseData.errorReason());
    Serial.println("------------------------------------");
    Serial.println();
  }
}

void pushFirebase(String path, bool value) {
  if (Firebase.setBool(firebaseData, path, value))
  {
    Serial.println("PASSED");
    Serial.println("PATH: " + firebaseData.dataPath());
    Serial.println("TYPE: " + firebaseData.dataType());
    Serial.println("ETag: " + firebaseData.ETag());
    Serial.print("VALUE: ");
    // printResult(firebaseData);
    Serial.println("------------------------------------");
    Serial.println();
  }
  else
  {
    Serial.println("FAILED");
    Serial.println("REASON: " + firebaseData.errorReason());
    Serial.println("------------------------------------");
    Serial.println();
  }
}
double lat;
double lon;

int period = 60000;
unsigned long time_now = 0;

String double2string(double n, int ndec) {
  String r = "";

  int v = n;
  r += v;     // whole number part
  r += '.';   // decimal point
  int i;
  for (i=0;i<ndec;i++) {
    // iterate through each decimal digit for 0..ndec
    n -= v;
    n *= 10;
    v = n;
    r += v;
  }

  return r;
}
void loop()
{

  while (SerialGPS.available() > 0) {
    byte gpsData = SerialGPS.read();
    gps.encode(gpsData);

  }
  if (gps.location.isUpdated()){
    if(millis() >= time_now + period){
      time_now += period;
      Serial.println("Hello");

      Serial.print("D / M / A: ");
      Serial.print(gps.time.value());
      Serial.print("Latitude = ");
      Serial.print(gps.location.lat(), 6);
      lat = (gps.location.lat());
      lon = (gps.location.lng());
      String loc = (double2string(lat,6) + ", " + double2string(lon, 6));
      // Longitude in degrees (double)
      Serial.print(" Longitude = ");
      Serial.println(gps.location.lng(), 6);

      pushFirebase("/location",loc);

    }
  }

  Serial.print(".");

int ldrL1 = digitalRead(L1INPUT);
int f1 = analogRead(L1INPUTF);
Serial.print(f1);

  int LDRIN= digitalRead(LDRINPUT);
  if(LDRIN){
    if(!faultL1){
if(statusL1){

if ( ldrL1 == LOW )
{ 
  ledcWrite(ledChannel1,1024);
  delay(20);
}
else 
{
  ledcWrite(ledChannel1,32);

}
}
else{

  ledcWrite(ledChannel1,0);
  }
    }

  //light2

int ldrL2 = digitalRead(L2INPUT);

if(statusL2){

if ( ldrL2 == LOW )
{ 
  ledcWrite(ledChannel2,512);
}
else 
{
  ledcWrite(ledChannel2,32);

}
}
else{

  ledcWrite(ledChannel2,0);
  }

  //light3

int ldrL3 = digitalRead(L3INPUT);

if(statusL3){
//int L1F = analogRead(L1INPUTF);
//if(L1F==0){
//  pushFirebase("/lights/l1/isfault", true);
//}

if ( ldrL3 == LOW )
{ 
  ledcWrite(ledChannel3,512);
}
else 
{
  ledcWrite(ledChannel3,32);

}
}
else{

  ledcWrite(ledChannel3,0);
  }
  }else{
  ledcWrite(ledChannel1,0);
  ledcWrite(ledChannel2,0);
  ledcWrite(ledChannel3,0);
    }
  int amp =  analogRead(AMPEREINPUT);
  //Serial.print(amp);
  delay(200);

}
`

[Shahzainali]

This is method for saving data pushFirebase("/shahzain/isfault/", true);

previously it was working perfectly.

[mobizt]

You are using too many FirebaseData objects.

Each FirebaseData object has WiFi Client instance which it consumes large amount of ram due to memory used by SSL/TLS provider ( mbedTLS library).

[mobizt]

You can use only one FirebaseData object for stream parent node e.g. Firebase.beginStream(firebaseDataCallback1, "/lights")

You can check firebaseDataCallback1.dataPath() to determine which child node has changed.

[Shahzainali]

Thanks for quick response, Let me try

[Shahzainali]

Thanks :) problem is fixed.

[nguyenthang621]

I need the source code, please