ESPAsyncWebServer + Husarnet

Help
1

Hi.

I’m trying to use ESPAsyncWebServer library using this simple web server example.

This is the resulting code:

#include "Arduino.h"
#include <WiFi.h>
#include <Husarnet.h>
//#include <WebServer.h>
#include "AsyncTCP.h"
#include "ESPAsyncWebServer.h"

// WiFi credentials
const char* ssid     = "------";
const char* password = "----------------";

// Husarnet credentials
const char* hostName = "----------------";
const char* husarnetJoinCode = "------------------------------";
const char* dashboardURL = "default";

// Setup http server
AsyncWebServer server(8000);



void setup() {
  Serial.begin(115200);

  // Connect to Wi-Fi
  Serial.printf("Connecting to %s", ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.printf("done!\r\nLocal IP: %s\r\n", WiFi.localIP().toString().c_str());

  // Start Husarnet
  Husarnet.selfHostedSetup(dashboardURL);
  Husarnet.join(husarnetJoinCode, hostName);
  Husarnet.start();

  // Configure http server
server.on("/index.html", HTTP_GET, [] (AsyncWebServerRequest * request) {
    AsyncWebServerResponse *response = request->beginResponse(200, "text/html", "<html><head></head><body>Hello World!</body></html>");
    request->send(response);
  });

  server.begin();
}

void loop() {
}

app.husarnet.com shows the connected device and all its parameters:
name - status - address - info
but never shows an available web server under “info” column

The code works well when accessing inside the local network: 192.168.1.X:8000 but not when using https://-----------------------------------------------8000.husarnetusers.com/index.html
Firefox allways shows: 502 Bad Gateway

1 Like
2

Today, it works and i don’t know why

3

Hi, basically https://................../husarnetuser.com/index.html is not the perfect way of accessing a web user interface of your ESP32 board. In this case you don’t use peer-to-peer to access you ESP32 but a proxy server instead.

The better way is to connect ESP32 and your laptop to the same Husarnet network.

If you do so, you ESP32 web UI will be available from a level of your web browser under the hostname or Husarnet IPv6 address of your ESP32 board, eg. :

http://my-esp32-hostname:8000 (in firefox)

of

http://[fc94:xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:d395]:8000

You will have a peer-to-peer connection with no proxy server in between.

Best,
Dominik

4

Hi, I know it’s too late
But I have a question
Do you know the reason for working the code well?
Is it possible to access WEBUI of Husarnet with the ESPAsyncWebServer library at all?

5

Hi, yes, it is possible: https://github.com/husarnet/esp32-internet-ota :slight_smile: . Details of this project are presented in this blog post

AsyncTCP and ESPAsyncWebServer are great projects, and yes - they work with Husarnet as well :slight_smile:

I have even a few more examples using that library on my GitHub profile, like:

Best,
Dominik

6

Hello Domink
Thanks for your quick reply.
I have problems to run this code.
what does these lines of code means?
extern const char index_html_start asm(“_binary_src_index_html_start”);
const String index_html = String((const char*)index_html_start);

can you explain above lines?
I get compiling error in here.

Error
Error1366×768 117 KB

7

Hi, the project is made for VSC + platformio, not for Arduino IDE.

String((const char*)index_html_start); will not work in Arduino IDE, because this part is handled by platformio. This is very handy feature to deal with HTML files in embedded projects.

Best,
Dominik

8

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