121 lines
3.2 KiB
C++
121 lines
3.2 KiB
C++
/*
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ESP32 mDNS responder sample
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This is an example of an HTTP server that is accessible
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via http://esp32.local URL thanks to mDNS responder.
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Instructions:
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- Update WiFi SSID and password as necessary.
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- Flash the sketch to the ESP32 board
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- Install host software:
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- For Linux, install Avahi (http://avahi.org/).
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- For Windows, install Bonjour (http://www.apple.com/support/bonjour/).
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- For Mac OSX and iOS support is built in through Bonjour already.
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- Point your browser to http://esp32.local, you should see a response.
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*/
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#include <WiFi.h>
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#include <ESPmDNS.h>
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#include <WiFiClient.h>
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const char* ssid = "............";
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const char* password = "..............";
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// TCP server at port 80 will respond to HTTP requests
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WiFiServer server(80);
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void setup(void)
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{
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Serial.begin(115200);
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// Connect to WiFi network
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WiFi.begin(ssid, password);
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Serial.println("");
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// Wait for connection
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while (WiFi.status() != WL_CONNECTED) {
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delay(500);
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Serial.print(".");
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}
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Serial.println("");
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Serial.print("Connected to ");
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Serial.println(ssid);
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Serial.print("IP address: ");
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Serial.println(WiFi.localIP());
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// Set up mDNS responder:
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// - first argument is the domain name, in this example
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// the fully-qualified domain name is "esp32.local"
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// - second argument is the IP address to advertise
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// we send our IP address on the WiFi network
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if (!MDNS.begin("esp32")) {
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Serial.println("Error setting up MDNS responder!");
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while(1) {
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delay(1000);
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}
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}
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Serial.println("mDNS responder started");
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// Start TCP (HTTP) server
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server.begin();
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Serial.println("TCP server started");
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// Add service to MDNS-SD
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MDNS.addService("http", "tcp", 80);
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}
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void loop(void)
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{
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// Check if a client has connected
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WiFiClient client = server.available();
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if (!client) {
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return;
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}
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Serial.println("");
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Serial.println("New client");
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// Wait for data from client to become available
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while(client.connected() && !client.available()){
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delay(1);
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}
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// Read the first line of HTTP request
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String req = client.readStringUntil('\r');
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// First line of HTTP request looks like "GET /path HTTP/1.1"
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// Retrieve the "/path" part by finding the spaces
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int addr_start = req.indexOf(' ');
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int addr_end = req.indexOf(' ', addr_start + 1);
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if (addr_start == -1 || addr_end == -1) {
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Serial.print("Invalid request: ");
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Serial.println(req);
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return;
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}
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req = req.substring(addr_start + 1, addr_end);
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Serial.print("Request: ");
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Serial.println(req);
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String s;
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if (req == "/")
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{
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IPAddress ip = WiFi.localIP();
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String ipStr = String(ip[0]) + '.' + String(ip[1]) + '.' + String(ip[2]) + '.' + String(ip[3]);
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s = "HTTP/1.1 200 OK\r\nContent-Type: text/html\r\n\r\n<!DOCTYPE HTML>\r\n<html>Hello from ESP32 at ";
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s += ipStr;
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s += "</html>\r\n\r\n";
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Serial.println("Sending 200");
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}
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else
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{
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s = "HTTP/1.1 404 Not Found\r\n\r\n";
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Serial.println("Sending 404");
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}
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client.print(s);
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client.stop();
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Serial.println("Done with client");
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}
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