Can't get HTTP information

Question

Can't get HTTP information

Tipmanfrank opened this issue 2 years ago · comments

This is maybe not directly related to Autoconnect but I hope you can help anyway.
I use AutoConnect to connect to internet.
I set up NTP time for Copenhagen.
I want to get information from homepage you can see from the Serial Monitor below.

Code:
`
#include <WiFi.h> // Replace with WiFi.h for ESP32
#include <WebServer.h> // Replace with WebServer.h for ESP32
#include <AutoConnect.h> // For AutoConnect Wifi
#include <time.h> // For NTP time

//for display
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

//DISPLAY
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 32 // OLED display height, in pixels
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
// The pins for I2C are defined by the Wire-library.
// On an arduino UNO: A4(SDA), A5(SCL)
// On an arduino MEGA 2560: 20(SDA), 21(SCL)
// On an arduino LEONARDO: 2(SDA), 3(SCL), ...
#define OLED_RESET 4 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

int x,minX;
IPAddress ip;

//AUTOCONNECT
WebServer Server; // Replace with WebServer for ESP32
AutoConnect Portal(Server);
AutoConnectConfig Config;

//Webside fra ESP
void rootPage() {
char content[] = "Kapsejlads.nu - HORN";
Server.send(200, "text/plain", content);
}

//SKRIV NTP TID
void printLocalTime(){
struct tm timeinfo; //skriv tiden til timeinfo som tidskode
if(!getLocalTime(&timeinfo)){ //kontroller om tid er modtaget
Serial.println("Failed to obtain time");
return;
}
Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S"); //skriv tid til monitor
}

//SÆT TIDSZONE
void setTimezone(String timezone){
Serial.printf(" Setting Timezone to %s\n",timezone.c_str()); //skriv til monitor
setenv("TZ",timezone.c_str(),1); // Now adjust the TZ. Clock settings are adjusted to show the new local time. Indstil til CPH
tzset(); //indstil tidszonen
}

//HENT NTP TID
void initTime(String timezone){
struct tm timeinfo; //skriv tiden til timeinfo

Serial.println("Setting up time");
configTime(0, 0, "europe.pool.ntp.org"); // First connect to NTP server, with 0 TZ offset. Ingen tidszone eller sommertidskorrektion
if(!getLocalTime(&timeinfo)){ //hvis NTP ikke kan hentes
Serial.println(" Failed to obtain time");
return;
}
Serial.println(" Got the time from NTP"); //NTP tid er hentet
// Now we can set the real timezone
setTimezone(timezone); //sæt tidszonen og dermed evt. sommertid
}

void setup() {
//DISPLAY
// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
//delay(2000); // Pause for 2 seconds
display.setTextSize(1); //font størrelse
display.setTextColor(WHITE); //skrift farve
display.setTextWrap(false); //skift ikke linje
display.clearDisplay(); //ryd display
display.setCursor(0, 10); //start position
display.print("Kapsejlads.nu"); //sæt tekst
display.setCursor(0, 20); //ny position
display.print("by Frank Larsen"); //sæt tekst
display.display(); //skriv til display
x=display.width(); //sæt x = display bredde.

//AUTOCONNECT
Serial.begin(115200);
Serial.println();
Config.apid = "Kapsejlads-horn";
Config.psk = "Kapsejlads.nu";
Portal.config(Config);

//FORBIND WIFI
Server.on("/", rootPage);
if (Portal.begin()) {
Serial.println("WiFi connected: " + WiFi.localIP().toString());
}

//hent NTP tid
delay(500); //vent 0,5 s, så wifi er klar
initTime("CET-1CEST,M3.5.0,M10.5.0/3"); //hent tid for københavn, https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv

//hent klub navn
String serverName = "https://kapsejlads.nu/hide-horn-esp.php";
if(WiFi.status()== WL_CONNECTED){
WiFiClient client;
HTTPClient http;

  String serverPath = serverName + "?klubid=13";
  Serial.println(serverPath);
  
  // Your Domain name with URL path or IP address with path
  http.begin(client, serverPath.c_str());

  // If you need Node-RED/server authentication, insert user and password below
  //http.setAuthorization("REPLACE_WITH_SERVER_USERNAME", "REPLACE_WITH_SERVER_PASSWORD");
    
  // Send HTTP GET request
  int httpResponseCode = http.GET();
  
  if (httpResponseCode>0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    String payload = http.getString();
    Serial.println(payload);
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();
}
else {
  Serial.println("WiFi Disconnected");
}

}

void loop() {
Portal.handleClient();

//Hent lokal NTP fra ESP
struct tm timeinfo;
getLocalTime(&timeinfo);

//vis rulletekst
char message[]="Dette er min tekst";
//minX=-12strlen(message);
minX=-1225; //12 karakter i disp med denne font, 25 karakter tekst at vise
display.setTextSize(2);
display.clearDisplay();
display.setCursor(x,10);
display.print(WiFi.localIP().toString()+" - "); //viser IP i display
display.print(&timeinfo, "%H:%M:%S"); //viser tiden bagefter i display
//display.print(message); //viser tekst i display
display.display(); //skriv til display
x=x-1;
if(x<minX)x=display.width();
//Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S"); //skriv tid til monitor

}
`

The homepage returns "Demo klub".

Serial Monitor returns:
WiFi connected: 192.168.1.118
Setting up time
Got the time from NTP
Setting Timezone to CET-1CEST,M3.5.0,M10.5.0/3
https://kapsejlads.nu/hide-horn-esp.php?klubid=13
Error code: -5

I have an "Error code -5". What does this mean? Can you see what I have done wrong?

Tipmanfrank · Answer 1 · Mon Jan 23 2023 04:44:15 GMT+0800 (China Standard Time)

This is maybe not directly related to Autoconnect but I hope you can help anyway. I use AutoConnect to connect to internet. I set up NTP time for Copenhagen. I want to get information from homepage you can see from the Serial Monitor below.

Code: #include <WiFi.h> // Replace with WiFi.h for ESP32 #include <WebServer.h> // Replace with WebServer.h for ESP32 #include <AutoConnect.h> // For AutoConnect Wifi #include <time.h> // For NTP time

//for display #include <Wire.h> #include <Adafruit_GFX.h> #include <Adafruit_SSD1306.h>

//DISPLAY #define SCREEN_WIDTH 128 // OLED display width, in pixels #define SCREEN_HEIGHT 32 // OLED display height, in pixels // Declaration for an SSD1306 display connected to I2C (SDA, SCL pins) // The pins for I2C are defined by the Wire-library. // On an arduino UNO: A4(SDA), A5(SCL) // On an arduino MEGA 2560: 20(SDA), 21(SCL) // On an arduino LEONARDO: 2(SDA), 3(SCL), ... #define OLED_RESET 4 // Reset pin # (or -1 if sharing Arduino reset pin) #define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

int x,minX; IPAddress ip;

//AUTOCONNECT WebServer Server; // Replace with WebServer for ESP32 AutoConnect Portal(Server); AutoConnectConfig Config;

//Webside fra ESP void rootPage() { char content[] = "Kapsejlads.nu - HORN"; Server.send(200, "text/plain", content); }

//SKRIV NTP TID void printLocalTime(){ struct tm timeinfo; //skriv tiden til timeinfo som tidskode if(!getLocalTime(&timeinfo)){ //kontroller om tid er modtaget Serial.println("Failed to obtain time"); return; } Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S"); //skriv tid til monitor }

//SÆT TIDSZONE void setTimezone(String timezone){ Serial.printf(" Setting Timezone to %s\n",timezone.c_str()); //skriv til monitor setenv("TZ",timezone.c_str(),1); // Now adjust the TZ. Clock settings are adjusted to show the new local time. Indstil til CPH tzset(); //indstil tidszonen }

//HENT NTP TID void initTime(String timezone){ struct tm timeinfo; //skriv tiden til timeinfo

Serial.println("Setting up time"); configTime(0, 0, "europe.pool.ntp.org"); // First connect to NTP server, with 0 TZ offset. Ingen tidszone eller sommertidskorrektion if(!getLocalTime(&timeinfo)){ //hvis NTP ikke kan hentes Serial.println(" Failed to obtain time"); return; } Serial.println(" Got the time from NTP"); //NTP tid er hentet // Now we can set the real timezone setTimezone(timezone); //sæt tidszonen og dermed evt. sommertid }

void setup() { //DISPLAY // SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS); //delay(2000); // Pause for 2 seconds display.setTextSize(1); //font størrelse display.setTextColor(WHITE); //skrift farve display.setTextWrap(false); //skift ikke linje display.clearDisplay(); //ryd display display.setCursor(0, 10); //start position display.print("Kapsejlads.nu"); //sæt tekst display.setCursor(0, 20); //ny position display.print("by Frank Larsen"); //sæt tekst display.display(); //skriv til display x=display.width(); //sæt x = display bredde.

//AUTOCONNECT Serial.begin(115200); Serial.println(); Config.apid = "Kapsejlads-horn"; Config.psk = "Kapsejlads.nu"; Portal.config(Config);

//FORBIND WIFI Server.on("/", rootPage); if (Portal.begin()) { Serial.println("WiFi connected: " + WiFi.localIP().toString()); }

//hent NTP tid delay(500); //vent 0,5 s, så wifi er klar initTime("CET-1CEST,M3.5.0,M10.5.0/3"); //hent tid for københavn, https://github.com/nayarsystems/posix_tz_db/blob/master/zones.csv

//hent klub navn String serverName = "https://kapsejlads.nu/hide-horn-esp.php"; if(WiFi.status()== WL_CONNECTED){ WiFiClient client; HTTPClient http;
  String serverPath = serverName + "?klubid=13";
  Serial.println(serverPath);
  
  // Your Domain name with URL path or IP address with path
  http.begin(client, serverPath.c_str());

  // If you need Node-RED/server authentication, insert user and password below
  //http.setAuthorization("REPLACE_WITH_SERVER_USERNAME", "REPLACE_WITH_SERVER_PASSWORD");
    
  // Send HTTP GET request
  int httpResponseCode = http.GET();
  
  if (httpResponseCode>0) {
    Serial.print("HTTP Response code: ");
    Serial.println(httpResponseCode);
    String payload = http.getString();
    Serial.println(payload);
  }
  else {
    Serial.print("Error code: ");
    Serial.println(httpResponseCode);
  }
  // Free resources
  http.end();
}
else {
  Serial.println("WiFi Disconnected");
}
}

void loop() { Portal.handleClient();

//Hent lokal NTP fra ESP struct tm timeinfo; getLocalTime(&timeinfo);

//vis rulletekst char message[]="Dette er min tekst"; //minX=-12_strlen(message); minX=-12_25; //12 karakter i disp med denne font, 25 karakter tekst at vise display.setTextSize(2); display.clearDisplay(); display.setCursor(x,10); display.print(WiFi.localIP().toString()+" - "); //viser IP i display display.print(&timeinfo, "%H:%M:%S"); //viser tiden bagefter i display //display.print(message); //viser tekst i display display.display(); //skriv til display x=x-1; if(x<minX)x=display.width(); //Serial.println(&timeinfo, "%A, %B %d %Y %H:%M:%S"); //skriv tid til monitor

}

The homepage returns "Demo klub".

Serial Monitor returns: WiFi connected: 192.168.1.118 Setting up time Got the time from NTP Setting Timezone to CET-1CEST,M3.5.0,M10.5.0/3 https://kapsejlads.nu/hide-horn-esp.php?klubid=13 Error code: -5

I have an "Error code -5". What does this mean? Can you see what I have done wrong?

Code on this page works: https://randomnerdtutorials.com/esp32-http-get-post-arduino/

So I need to change something in the code to make it work with Autoconnect. Hope that you plz can help a novice.