53 lines
1.4 KiB
Arduino
53 lines
1.4 KiB
Arduino
|
#include <WiFi.h>
|
||
|
|
#include <DNSServer.h>
|
||
|
|
|
||
|
|
const byte DNS_PORT = 53;
|
||
|
|
IPAddress apIP(8,8,4,4); // The default android DNS
|
||
|
|
DNSServer dnsServer;
|
||
|
|
WiFiServer server(80);
|
||
|
|
|
||
|
|
String responseHTML = ""
|
||
|
|
"<!DOCTYPE html><html><head><title>CaptivePortal</title></head><body>"
|
||
|
|
"<h1>Hello World!</h1><p>This is a captive portal example. All requests will "
|
||
|
|
"be redirected here.</p></body></html>";
|
||
|
|
|
||
|
|
void setup() {
|
||
|
|
WiFi.mode(WIFI_AP);
|
||
|
|
WiFi.softAP("ESP32-DNSServer");
|
||
|
|
WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
|
||
|
|
|
||
|
|
// if DNSServer is started with "*" for domain name, it will reply with
|
||
|
|
// provided IP to all DNS request
|
||
|
|
dnsServer.start(DNS_PORT, "*", apIP);
|
||
|
|
|
||
|
|
server.begin();
|
||
|
|
}
|
||
|
|
|
||
|
|
void loop() {
|
||
|
|
dnsServer.processNextRequest();
|
||
|
|
WiFiClient client = server.available(); // listen for incoming clients
|
||
|
|
|
||
|
|
if (client) {
|
||
|
|
String currentLine = "";
|
||
|
|
while (client.connected()) {
|
||
|
|
if (client.available()) {
|
||
|
|
char c = client.read();
|
||
|
|
if (c == '\n') {
|
||
|
|
if (currentLine.length() == 0) {
|
||
|
|
client.println("HTTP/1.1 200 OK");
|
||
|
|
client.println("Content-type:text/html");
|
||
|
|
client.println();
|
||
|
|
client.print(responseHTML);
|
||
|
|
break;
|
||
|
|
} else {
|
||
|
|
currentLine = "";
|
||
|
|
}
|
||
|
|
} else if (c != '\r') {
|
||
|
|
currentLine += c;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
client.stop();
|
||
|
|
}
|
||
|
|
}
|