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Xinyuan-LilyGO / LilyGO-T-SIM7000G

LilyGO T-SIM7000G
https://pt.aliexpress.com/item/4000542688096.html
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Http connection problem after 1 hour #152

Open Tonisg91 opened 2 years ago

Tonisg91 commented 2 years ago

Hi all. I am doing some tests with an ESP32 Lilygo TTGO SIM7000 and I have warned that there is a problem with HTTP after some time sending data.

When I turn on the ESP32 it works correctly and after about an hour of sending data, the connection fails and it does not connect again.

This is the code. Any suggestion?

#define SerialMon Serial

// Set serial for AT commands (to the module)`
// Use Hardware Serial on Mega, Leonardo, Micro
#define SerialAT Serial1

#define TINY_GSM_MODEM_SIM7000
#define TINY_GSM_RX_BUFFER 1024 // Set RX buffer to 1Kb

// See all AT commands, if wanted
// #define DUMP_AT_COMMANDS

// set GSM PIN, if any
#define GSM_PIN "XXXX"

// Your GPRS credentials, if any
const char apn[] = "datos";
const char gprsUser[] = "";
const char gprsPass[] = "";

const char server[] = "xxxxxxxxxxx.xxx";
const char coords[] = "/coords";
const int port = 80;

#include <TinyGsmClient.h>
#include <ArduinoHttpClient.h>
#include <ArduinoJson.h>

#define DUMP_AT_COMMANDS

#ifdef DUMP_AT_COMMANDS
#include <StreamDebugger.h>
StreamDebugger debugger(SerialAT, SerialMon);
TinyGsm modem(debugger);
#else
TinyGsm modem(SerialAT);
#endif

TinyGsmClient client(modem);
HttpClient http(client, server, port);

#define uS_TO_S_FACTOR 1000000ULL // Conversion factor for micro seconds to seconds
#define TIME_TO_SLEEP 60          // Time ESP32 will go to sleep (in seconds)

#define UART_BAUD 115200
#define PIN_DTR 25
#define PIN_TX 27
#define PIN_RX 26
#define PWR_PIN 4

#define SD_MISO 2
#define SD_MOSI 15
#define SD_SCLK 14
#define SD_CS 13
#define LED_PIN 12

void modemPowerOn()
{
  pinMode(PWR_PIN, OUTPUT);
  digitalWrite(PWR_PIN, LOW);
  delay(1000); //Datasheet Ton mintues = 1S
  digitalWrite(PWR_PIN, HIGH);
}

void modemPowerOff()
{
  pinMode(PWR_PIN, OUTPUT);
  digitalWrite(PWR_PIN, LOW);
  delay(1500); //Datasheet Ton mintues = 1.2S
  digitalWrite(PWR_PIN, HIGH);
}

void modemRestart()
{
  modemPowerOff();
  delay(1000);
  modemPowerOn();
}

void enableGPS(void)
{
  // Set SIM7000G GPIO4 LOW ,turn on GPS power
  // CMD:AT+SGPIO=0,4,1,1
  // Only in version 20200415 is there a function to control GPS power
  Serial.println("Start positioning . Make sure to locate outdoors.");
  Serial.println("The blue indicator light flashes to indicate positioning.");
  modem.sendAT("+SGPIO=0,4,1,1");
  if (modem.waitResponse(10000L) != 1)
  {
    DBG(" SGPIO=0,4,1,1 false ");
  }
  modem.enableGPS();
}

void disableGPS(void)
{
  // Set SIM7000G GPIO4 LOW ,turn off GPS power
  // CMD:AT+SGPIO=0,4,1,0
  // Only in version 20200415 is there a function to control GPS power
  modem.sendAT("+SGPIO=0,4,1,0");
  if (modem.waitResponse(10000L) != 1)
  {
    DBG(" SGPIO=0,4,1,0 false ");
  }
  modem.disableGPS();
}

void sendCoords(float lat, float lon)
{

  // Prepare JSON document
  StaticJsonDocument<200> doc;
  doc["lat"] = lat;
  doc["lon"] = lon;

  // Serialize JSON document
  String json;
  serializeJson(doc, json);

  int err = http.post(coords, "application/json", json);
  if (err != 0)
  {
    SerialMon.println(F("failed to connect"));
    delay(10000);
    return;
  }

  int status = http.responseStatusCode();

  if (!status)
  {
    delay(10000);
    return;
  }

  String body = http.responseBody();
  SerialMon.println(F("Response:"));
  SerialMon.println(body);

  // Shutdown
  http.stop();
  SerialMon.println(F("Server disconnected"));
}

void setup()
{
  // Set console baud rate
  SerialMon.begin(115200);

  delay(10);

  // Set LED OFF
  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, HIGH);

  SerialAT.begin(UART_BAUD, SERIAL_8N1, PIN_RX, PIN_TX);

  delay(10000);

  modemPowerOn();

  Serial.println("Initializing modem...");
  if (!modem.restart())
  {
    Serial.println("Failed to restart modem, attempting to continue without restarting");
  }

  // String modemInfo = modem.getModemInfo();
  // SerialMon.print("Modem Info: ");
  // SerialMon.println(modemInfo);

  // Unlock your SIM card with a PIN if needed
  if (GSM_PIN && modem.getSimStatus() != 3)
  {
    modem.simUnlock(GSM_PIN);
  }
}

void loop()
{

  // GPRS connection parameters are usually set after network registration
  SerialMon.print(F("Connecting to "));
  SerialMon.print(apn);
  if (!modem.gprsConnect(apn, gprsUser, gprsPass))
  {
    SerialMon.println(" fail");
    delay(10000);
    return;
  }
  SerialMon.println(" success");

  if (modem.isGprsConnected())
  {
    SerialMon.println("GPRS connected");
  }

  enableGPS();

  float lat, lon;
  while (1)
  {
    if (modem.getGPS(&lat, &lon))
    {
      sendCoords(lat, lon);
    }
    digitalWrite(LED_PIN, !digitalRead(LED_PIN));
    delay(7500);
  }
}

Successful http request AT dump commands.

10:23:58.141 -> 0, CONNECT OK
10:23:58.141 -> AT+CIPSEND=0,4
10:23:58.141 -> 
10:23:58.141 -> >POST 
10:23:58.141 -> DATA ACCEPT:0,4
10:23:58.141 -> AT+CIPSEND=0,1
10:23:58.141 -> 
10:23:58.141 -> DATA ACCEPT:0,1
10:23:58.141 -> AT+CIPSEND=0,7
10:23:58.141 -> 
10:23:58.141 -> >/coords 
10:23:58.174 -> DATA ACCEPT:0,7
10:23:58.174 -> AT+CIPSEND=0,9
10:23:58.174 -> 
10:23:58.174 -> > HTTP/1.1 
10:23:58.174 -> DATA ACCEPT:0,9
10:23:58.174 -> AT+CIPSEND=0,2
10:23:58.174 -> 
 10:23:58.174 -> DATA ACCEPT:0,2
10:23:58.174 -> AT+CIPSEND=0,6
10:23:58.174 -> 
10:23:58.174 -> >Host:  
10:23:58.174 -> DATA ACCEPT:0,6
10:23:58.174 -> AT+CIPSEND=0,24
10:23:58.174 -> 
10:23:58.174 -> >xxx.xxxx.com 
10:23:58.174 -> DATA ACCEPT:0,24
10:23:58.174 -> AT+CIPSEND=0,2
10:23:58.174 -> 
10:23:58.174 -> DATA ACCEPT:0,2
10:23:58.207 -> AT+CIPSEND=0,10
10:23:58.207 -> 
10:23:58.207 -> >User-Agent 
10:23:58.207 -> DATA ACCEPT:0,10
10:23:58.207 -> AT+CIPSEND=0,2
10:23:58.207 -> 
10:23:58.207 -> DATA ACCEPT:0,2
10:23:58.207 -> AT+CIPSEND=0,13
10:23:58.207 -> 
10:23:58.207 -> >Arduino/2.2.0 
10:23:58.207 -> DATA ACCEPT:0,13
10:23:58.207 -> AT+CIPSEND=0,2
10:23:58.207 -> 
10:23:58.207 -> DATA ACCEPT:0,2
10:23:58.207 -> AT+CIPSEND=0,10
10:23:58.207 -> 
10:23:58.207 -> >Connection 
10:23:58.207 -> DATA ACCEPT:0,10
10:23:58.207 -> AT+CIPSEND=0,2
10:23:58.207 -> 
10:23:58.241 -> DATA ACCEPT:0,2
10:23:58.241 -> AT+CIPSEND=0,5
10:23:58.241 -> 
10:23:58.241 -> >close 
10:23:58.241 -> DATA ACCEPT:0,5
10:23:58.241 -> AT+CIPSEND=0,2
10:23:58.241 ->  
10:23:58.241 -> DATA ACCEPT:0,2
10:23:58.241 -> AT+CIPSEND=0,12
10:23:58.241 -> 
10:23:58.241 -> >Content-Type 
10:23:58.241 -> DATA ACCEPT:0,12
10:23:58.241 -> AT+CIPSEND=0,2
10:23:58.241 -> 
10:23:58.241 -> DATA ACCEPT:0,2
10:23:58.241 -> AT+CIPSEND=0,16
10:23:58.241 -> 
10:23:58.241 -> >application/json 
10:23:58.241 -> DATA ACCEPT:0,16
10:23:58.241 -> AT+CIPSEND=0,2
10:23:58.274 ->  
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,14
10:23:58.274 -> 
10:23:58.274 -> >Content-Length 
10:23:58.274 -> DATA ACCEPT:0,14
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 ->   
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 -> 
10:23:58.274 -> >31 
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 ->  
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 -> 
10:23:58.307 -> DATA ACCEPT:0,2
10:23:58.307 -> AT+CIPSEND=0,31
10:23:58.307 -> 
10:23:58.307 -> >{"lat":XX.XXXXX,"lon":X.XXXXXX} 
10:23:58.307 -> DATA ACCEPT:0,31
10:23:58.307 -> AT+CIPRXGET=4,0
10:23:58.307 -> 
10:23:58.307 -> +CIPRXGET: 4,0,0
10:23:58.307 -> 
10:23:58.307 -> OK
10:23:58.307 -> AT+CIPSTATUS=0
10:23:58.307 -> 
10:23:58.307 -> +CIPSTATUS: 0,0,"TCP","XX.XXX.XXX.XX","80","CONNECTED"
10:23:58.307 -> 
10:23:58.307 -> OK
10:23:59.308 -> AT+CIPRXGET=4,0
10:23:59.308 -> 
10:23:59.308 -> +CIPRXGET: 1,0
10:23:59.308 -> 
10:23:59.308 -> +CIPRXGET: 4,0,126
10:23:59.308 -> 
10:23:59.308 -> OK
10:23:59.308 -> AT+CIPSTATUS=0
10:23:59.308 -> 
10:23:59.308 -> +CIPSTATUS: 0,0,"TCP","XX.XXX.XXX.XX","80","REMOTE CLOSING"
10:23:59.341 -> 
10:23:59.341 -> OK
10:24:00.341 -> AT+CIPRXGET=4,0
10:24:00.341 -> 
10:24:00.341 -> +CIPRXGET: 4,0,126
10:24:00.341 -> 
10:24:00.341 -> OK
10:24:00.341 -> AT+CIPRXGET=2,0,126
10:24:00.341 -> 
10:24:00.341 -> +CIPRXGET: 2,0,126,0
10:24:00.341 -> HTTP/1.1 200 OK
10:24:00.341 -> Server: Cowboy
10:24:00.341 -> Connection: close
10:24:00.341 -> Content-Length: 0
10:24:00.341 -> Date: Tue, 28 Dec 2021 09:23:58 GMT
10:24:00.341 -> Via: 1.1 vegur
10:24:00.341 -> 
10:24:00.341 -> OK
10:24:00.341 -> Response:
10:24:00.374 -> 
10:24:00.374 -> AT+CIPCLOSE=0
10:24:00.374 -> 
10:24:00.374 -> 0, CLOSE OK
10:24:00.374 -> Server disconnected

Error AT Commands

10:24:53.596 -> AT+CGNSINF
10:24:53.629 -> 
10:24:53.629 -> +CGNSINF: xxxxxxxxxxxxx
10:24:53.629 -> 
10:24:53.629 -> OK
10:24:53.629 -> AT+CIPCLOSE=0
10:24:53.629 -> 
10:24:53.629 -> ERROR
10:24:53.629 -> AT+CIPSTART=0,"TCP","xxxx.xxxxx.com",80
10:24:53.629 -> 
10:24:53.629 -> ERROR
10:24:53.629 -> failed to connect
onlinegill commented 2 years ago

Hi all. I am doing some tests with an ESP32 Lilygo TTGO SIM7000 and I have warned that there is a problem with HTTP after some time sending data.

When I turn on the ESP32 it works correctly and after about an hour of sending data, the connection fails and it does not connect again.

This is the code. Any suggestion?

#define SerialMon Serial

// Set serial for AT commands (to the module)`
// Use Hardware Serial on Mega, Leonardo, Micro
#define SerialAT Serial1

#define TINY_GSM_MODEM_SIM7000
#define TINY_GSM_RX_BUFFER 1024 // Set RX buffer to 1Kb

// See all AT commands, if wanted
// #define DUMP_AT_COMMANDS

// set GSM PIN, if any
#define GSM_PIN "XXXX"

// Your GPRS credentials, if any
const char apn[] = "datos";
const char gprsUser[] = "";
const char gprsPass[] = "";

const char server[] = "xxxxxxxxxxx.xxx";
const char coords[] = "/coords";
const int port = 80;

#include <TinyGsmClient.h>
#include <ArduinoHttpClient.h>
#include <ArduinoJson.h>

#define DUMP_AT_COMMANDS

#ifdef DUMP_AT_COMMANDS
#include <StreamDebugger.h>
StreamDebugger debugger(SerialAT, SerialMon);
TinyGsm modem(debugger);
#else
TinyGsm modem(SerialAT);
#endif

TinyGsmClient client(modem);
HttpClient http(client, server, port);

#define uS_TO_S_FACTOR 1000000ULL // Conversion factor for micro seconds to seconds
#define TIME_TO_SLEEP 60          // Time ESP32 will go to sleep (in seconds)

#define UART_BAUD 115200
#define PIN_DTR 25
#define PIN_TX 27
#define PIN_RX 26
#define PWR_PIN 4

#define SD_MISO 2
#define SD_MOSI 15
#define SD_SCLK 14
#define SD_CS 13
#define LED_PIN 12

void modemPowerOn()
{
  pinMode(PWR_PIN, OUTPUT);
  digitalWrite(PWR_PIN, LOW);
  delay(1000); //Datasheet Ton mintues = 1S
  digitalWrite(PWR_PIN, HIGH);
}

void modemPowerOff()
{
  pinMode(PWR_PIN, OUTPUT);
  digitalWrite(PWR_PIN, LOW);
  delay(1500); //Datasheet Ton mintues = 1.2S
  digitalWrite(PWR_PIN, HIGH);
}

void modemRestart()
{
  modemPowerOff();
  delay(1000);
  modemPowerOn();
}

void enableGPS(void)
{
  // Set SIM7000G GPIO4 LOW ,turn on GPS power
  // CMD:AT+SGPIO=0,4,1,1
  // Only in version 20200415 is there a function to control GPS power
  Serial.println("Start positioning . Make sure to locate outdoors.");
  Serial.println("The blue indicator light flashes to indicate positioning.");
  modem.sendAT("+SGPIO=0,4,1,1");
  if (modem.waitResponse(10000L) != 1)
  {
    DBG(" SGPIO=0,4,1,1 false ");
  }
  modem.enableGPS();
}

void disableGPS(void)
{
  // Set SIM7000G GPIO4 LOW ,turn off GPS power
  // CMD:AT+SGPIO=0,4,1,0
  // Only in version 20200415 is there a function to control GPS power
  modem.sendAT("+SGPIO=0,4,1,0");
  if (modem.waitResponse(10000L) != 1)
  {
    DBG(" SGPIO=0,4,1,0 false ");
  }
  modem.disableGPS();
}

void sendCoords(float lat, float lon)
{

  // Prepare JSON document
  StaticJsonDocument<200> doc;
  doc["lat"] = lat;
  doc["lon"] = lon;

  // Serialize JSON document
  String json;
  serializeJson(doc, json);

  int err = http.post(coords, "application/json", json);
  if (err != 0)
  {
    SerialMon.println(F("failed to connect"));
    delay(10000);
    return;
  }

  int status = http.responseStatusCode();

  if (!status)
  {
    delay(10000);
    return;
  }

  String body = http.responseBody();
  SerialMon.println(F("Response:"));
  SerialMon.println(body);

  // Shutdown
  http.stop();
  SerialMon.println(F("Server disconnected"));
}

void setup()
{
  // Set console baud rate
  SerialMon.begin(115200);

  delay(10);

  // Set LED OFF
  pinMode(LED_PIN, OUTPUT);
  digitalWrite(LED_PIN, HIGH);

  SerialAT.begin(UART_BAUD, SERIAL_8N1, PIN_RX, PIN_TX);

  delay(10000);

  modemPowerOn();

  Serial.println("Initializing modem...");
  if (!modem.restart())
  {
    Serial.println("Failed to restart modem, attempting to continue without restarting");
  }

  // String modemInfo = modem.getModemInfo();
  // SerialMon.print("Modem Info: ");
  // SerialMon.println(modemInfo);

  // Unlock your SIM card with a PIN if needed
  if (GSM_PIN && modem.getSimStatus() != 3)
  {
    modem.simUnlock(GSM_PIN);
  }
}

void loop()
{

  // GPRS connection parameters are usually set after network registration
  SerialMon.print(F("Connecting to "));
  SerialMon.print(apn);
  if (!modem.gprsConnect(apn, gprsUser, gprsPass))
  {
    SerialMon.println(" fail");
    delay(10000);
    return;
  }
  SerialMon.println(" success");

  if (modem.isGprsConnected())
  {
    SerialMon.println("GPRS connected");
  }

  enableGPS();

  float lat, lon;
  while (1)
  {
    if (modem.getGPS(&lat, &lon))
    {
      sendCoords(lat, lon);
    }
    digitalWrite(LED_PIN, !digitalRead(LED_PIN));
    delay(7500);
  }
}

Successful http request AT dump commands.

10:23:58.141 -> 0, CONNECT OK
10:23:58.141 -> AT+CIPSEND=0,4
10:23:58.141 -> 
10:23:58.141 -> >POST 
10:23:58.141 -> DATA ACCEPT:0,4
10:23:58.141 -> AT+CIPSEND=0,1
10:23:58.141 -> 
10:23:58.141 -> DATA ACCEPT:0,1
10:23:58.141 -> AT+CIPSEND=0,7
10:23:58.141 -> 
10:23:58.141 -> >/coords 
10:23:58.174 -> DATA ACCEPT:0,7
10:23:58.174 -> AT+CIPSEND=0,9
10:23:58.174 -> 
10:23:58.174 -> > HTTP/1.1 
10:23:58.174 -> DATA ACCEPT:0,9
10:23:58.174 -> AT+CIPSEND=0,2
10:23:58.174 -> 
 10:23:58.174 -> DATA ACCEPT:0,2
10:23:58.174 -> AT+CIPSEND=0,6
10:23:58.174 -> 
10:23:58.174 -> >Host:  
10:23:58.174 -> DATA ACCEPT:0,6
10:23:58.174 -> AT+CIPSEND=0,24
10:23:58.174 -> 
10:23:58.174 -> >xxx.xxxx.com 
10:23:58.174 -> DATA ACCEPT:0,24
10:23:58.174 -> AT+CIPSEND=0,2
10:23:58.174 -> 
10:23:58.174 -> DATA ACCEPT:0,2
10:23:58.207 -> AT+CIPSEND=0,10
10:23:58.207 -> 
10:23:58.207 -> >User-Agent 
10:23:58.207 -> DATA ACCEPT:0,10
10:23:58.207 -> AT+CIPSEND=0,2
10:23:58.207 -> 
10:23:58.207 -> DATA ACCEPT:0,2
10:23:58.207 -> AT+CIPSEND=0,13
10:23:58.207 -> 
10:23:58.207 -> >Arduino/2.2.0 
10:23:58.207 -> DATA ACCEPT:0,13
10:23:58.207 -> AT+CIPSEND=0,2
10:23:58.207 -> 
10:23:58.207 -> DATA ACCEPT:0,2
10:23:58.207 -> AT+CIPSEND=0,10
10:23:58.207 -> 
10:23:58.207 -> >Connection 
10:23:58.207 -> DATA ACCEPT:0,10
10:23:58.207 -> AT+CIPSEND=0,2
10:23:58.207 -> 
10:23:58.241 -> DATA ACCEPT:0,2
10:23:58.241 -> AT+CIPSEND=0,5
10:23:58.241 -> 
10:23:58.241 -> >close 
10:23:58.241 -> DATA ACCEPT:0,5
10:23:58.241 -> AT+CIPSEND=0,2
10:23:58.241 ->  
10:23:58.241 -> DATA ACCEPT:0,2
10:23:58.241 -> AT+CIPSEND=0,12
10:23:58.241 -> 
10:23:58.241 -> >Content-Type 
10:23:58.241 -> DATA ACCEPT:0,12
10:23:58.241 -> AT+CIPSEND=0,2
10:23:58.241 -> 
10:23:58.241 -> DATA ACCEPT:0,2
10:23:58.241 -> AT+CIPSEND=0,16
10:23:58.241 -> 
10:23:58.241 -> >application/json 
10:23:58.241 -> DATA ACCEPT:0,16
10:23:58.241 -> AT+CIPSEND=0,2
10:23:58.274 ->  
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,14
10:23:58.274 -> 
10:23:58.274 -> >Content-Length 
10:23:58.274 -> DATA ACCEPT:0,14
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 ->   
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 -> 
10:23:58.274 -> >31 
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 ->  
10:23:58.274 -> DATA ACCEPT:0,2
10:23:58.274 -> AT+CIPSEND=0,2
10:23:58.274 -> 
10:23:58.307 -> DATA ACCEPT:0,2
10:23:58.307 -> AT+CIPSEND=0,31
10:23:58.307 -> 
10:23:58.307 -> >{"lat":XX.XXXXX,"lon":X.XXXXXX} 
10:23:58.307 -> DATA ACCEPT:0,31
10:23:58.307 -> AT+CIPRXGET=4,0
10:23:58.307 -> 
10:23:58.307 -> +CIPRXGET: 4,0,0
10:23:58.307 -> 
10:23:58.307 -> OK
10:23:58.307 -> AT+CIPSTATUS=0
10:23:58.307 -> 
10:23:58.307 -> +CIPSTATUS: 0,0,"TCP","XX.XXX.XXX.XX","80","CONNECTED"
10:23:58.307 -> 
10:23:58.307 -> OK
10:23:59.308 -> AT+CIPRXGET=4,0
10:23:59.308 -> 
10:23:59.308 -> +CIPRXGET: 1,0
10:23:59.308 -> 
10:23:59.308 -> +CIPRXGET: 4,0,126
10:23:59.308 -> 
10:23:59.308 -> OK
10:23:59.308 -> AT+CIPSTATUS=0
10:23:59.308 -> 
10:23:59.308 -> +CIPSTATUS: 0,0,"TCP","XX.XXX.XXX.XX","80","REMOTE CLOSING"
10:23:59.341 -> 
10:23:59.341 -> OK
10:24:00.341 -> AT+CIPRXGET=4,0
10:24:00.341 -> 
10:24:00.341 -> +CIPRXGET: 4,0,126
10:24:00.341 -> 
10:24:00.341 -> OK
10:24:00.341 -> AT+CIPRXGET=2,0,126
10:24:00.341 -> 
10:24:00.341 -> +CIPRXGET: 2,0,126,0
10:24:00.341 -> HTTP/1.1 200 OK
10:24:00.341 -> Server: Cowboy
10:24:00.341 -> Connection: close
10:24:00.341 -> Content-Length: 0
10:24:00.341 -> Date: Tue, 28 Dec 2021 09:23:58 GMT
10:24:00.341 -> Via: 1.1 vegur
10:24:00.341 -> 
10:24:00.341 -> OK
10:24:00.341 -> Response:
10:24:00.374 -> 
10:24:00.374 -> AT+CIPCLOSE=0
10:24:00.374 -> 
10:24:00.374 -> 0, CLOSE OK
10:24:00.374 -> Server disconnected

Error AT Commands

10:24:53.596 -> AT+CGNSINF
10:24:53.629 -> 
10:24:53.629 -> +CGNSINF: xxxxxxxxxxxxx
10:24:53.629 -> 
10:24:53.629 -> OK
10:24:53.629 -> AT+CIPCLOSE=0
10:24:53.629 -> 
10:24:53.629 -> ERROR
10:24:53.629 -> AT+CIPSTART=0,"TCP","xxxx.xxxxx.com",80
10:24:53.629 -> 
10:24:53.629 -> ERROR
10:24:53.629 -> failed to connect

Did you figure out what was wrong ? Maybe your webserver kicking you out due to connection limit or device itself getting our of memory