Async_HelloServer2.ino

/****************************************************************************************************************************
  Async_HelloServer.ino
  
  For ESP8266 using W5x00/ENC8266 Ethernet
   
  AsyncWebServer_Ethernet is a library for the Ethernet with lwIP_5100, lwIP_5500 or lwIP_enc28j60 library
  
  Based on and modified from ESPAsyncWebServer (https://github.com/me-no-dev/ESPAsyncWebServer)
  Built by Khoi Hoang https://github.com/khoih-prog/AsyncWebServer_Ethernet
  Licensed under GPLv3 license
 *****************************************************************************************************************************/

#include "defines.h"

#include <AsyncWebServer_Ethernet.h>

AsyncWebServer    server(80);

void handleRoot(AsyncWebServerRequest *request)
{
  digitalWrite(LED_BUILTIN, LED_ON);
  request->send(200, "text/plain", String("Hello from AsyncWebServer_Ethernet on ") + BOARD_NAME );
  digitalWrite(LED_BUILTIN, LED_OFF);
}

void handleNotFound(AsyncWebServerRequest *request)
{
  digitalWrite(LED_BUILTIN, LED_ON);
  String message = "File Not Found\n\n";

  message += "URI: ";
  //message += server.uri();
  message += request->url();
  message += "\nMethod: ";
  message += (request->method() == HTTP_GET) ? "GET" : "POST";
  message += "\nArguments: ";
  message += request->args();
  message += "\n";

  for (uint8_t i = 0; i < request->args(); i++)
  {
    message += " " + request->argName(i) + ": " + request->arg(i) + "\n";
  }

  request->send(404, "text/plain", message);
  digitalWrite(LED_BUILTIN, LED_OFF);
}

void initEthernet()
{
  SPI.begin();
  SPI.setClockDivider(SPI_CLOCK_DIV4);
  SPI.setBitOrder(MSBFIRST);
  SPI.setDataMode(SPI_MODE0);

#if !USING_DHCP
  eth.config(localIP, gateway, netMask, gateway);
#endif
  
  eth.setDefault();
  
  if (!eth.begin()) 
  {
    Serial.println("No Ethernet hardware ... Stop here");
    
    while (true) 
    {
      delay(1000);
    }
  } 
  else 
  {
    Serial.print("Connecting to network : ");
    
    while (!eth.connected()) 
    {
      Serial.print(".");
      delay(1000);
    }
  }
 
  Serial.println();

#if USING_DHCP  
  Serial.print("Ethernet DHCP IP address: ");
#else
  Serial.print("Ethernet Static IP address: ");
#endif
  
  Serial.println(eth.localIP());
}

void setup()
{
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite(LED_BUILTIN, LED_OFF);

  Serial.begin(115200);
  while (!Serial && millis() < 5000);

  delay(200);

  Serial.print("\nStart Async_HelloServer2 on "); Serial.print(BOARD_NAME);
  Serial.print(" with "); Serial.println(SHIELD_TYPE);
  Serial.println(ASYNC_WEBSERVER_ETHERNET_VERSION);

  initEthernet();
  
  server.on("/", HTTP_GET, [](AsyncWebServerRequest * request)
  {
    handleRoot(request);
  });

  server.on("/inline", [](AsyncWebServerRequest * request)
  {
    request->send(200, "text/plain", "This works as well");
  });

  server.on("/gif", [](AsyncWebServerRequest * request) 
  {
    static const uint8_t gif[] = 
    {
      0x47, 0x49, 0x46, 0x38, 0x37, 0x61, 0x10, 0x00, 0x10, 0x00, 0x80, 0x01,
      0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0x2c, 0x00, 0x00, 0x00, 0x00,
      0x10, 0x00, 0x10, 0x00, 0x00, 0x02, 0x19, 0x8c, 0x8f, 0xa9, 0xcb, 0x9d,
      0x00, 0x5f, 0x74, 0xb4, 0x56, 0xb0, 0xb0, 0xd2, 0xf2, 0x35, 0x1e, 0x4c,
      0x0c, 0x24, 0x5a, 0xe6, 0x89, 0xa6, 0x4d, 0x01, 0x00, 0x3b
    };
    
    char gif_colored[sizeof(gif)];

    memcpy(gif_colored, gif, sizeof(gif));

    // Set the background to a random set of colors
    gif_colored[16] = millis() % 256;
    gif_colored[17] = millis() % 256;
    gif_colored[18] = millis() % 256;

    request->send(200, (char *) "image/gif", gif_colored);
  });

  server.onNotFound(handleNotFound);

  server.begin();

  Serial.print("HTTP EthernetWebServer started @ IP : ");
  Serial.println(eth.localIP());
}

void loop()
{
}