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Copy pathWebSocket+WiFiBeacons
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WebSocket+WiFiBeacons
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#include <ESP8266WiFi.h>
#include <ESPAsyncTCP.h>
#include <ESPAsyncWebServer.h>
#include <DNSServer.h>
#include <vector>
#include <queue>
extern "C" {
#include "user_interface.h"
}
const int STATUS_LED_PIN = 2;
const char* ap_ssid = "ConfigAP";
const char* ap_password = "password123";
const int CHANNEL = 1;
const int MAX_POWER = 20.5;
unsigned long previousMillis = 0;
const long interval = 10;
std::queue<String> messageQueue;
const int MAX_MESSAGES = 10;
AsyncWebServer server(80);
AsyncWebSocket ws("/ws");
DNSServer dnsServer;
byte rnd;
byte i;
byte count;
byte wifipkt[128] = { 0x80, 0x00, 0x00, 0x00,
/*4*/ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
/*10*/ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
/*16*/ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06,
/*22*/ 0xc0, 0x6c,
/*24*/ 0x83, 0x51, 0xf7, 0x8f, 0x0f, 0x00, 0x00, 0x00,
/*32*/ 0x64, 0x00,
/*34*/ 0x01, 0x04,
/*36*/ 0x00};
byte pktsuffix[] = {
0x01, 0x08, 0x82, 0x84,
0x8b, 0x96, 0x24, 0x30, 0x48, 0x6c, 0x03, 0x01,
0x04 };
void onWsEvent(AsyncWebSocket * server, AsyncWebSocketClient * client, AwsEventType type, void * arg, uint8_t *data, size_t len) {
if(type == WS_EVT_CONNECT){
Serial.printf("WebSocket client #%u connected from %s\n", client->id(), client->remoteIP().toString().c_str());
std::queue<String> tempQueue = messageQueue;
while(!tempQueue.empty()) {
client->text(tempQueue.front());
tempQueue.pop();
}
} else if(type == WS_EVT_DISCONNECT){
Serial.printf("WebSocket client #%u disconnected\n", client->id());
} else if(type == WS_EVT_DATA){
String message = "";
for(size_t i=0; i < len; i++) {
message += (char) data[i];
}
if(messageQueue.size() >= MAX_MESSAGES) {
messageQueue.pop();
}
messageQueue.push(message);
ws.textAll(message);
}
}
void setup() {
Serial.begin(115200);
Serial.println("\n\nStarting WiFi Access Point...");
pinMode(STATUS_LED_PIN, OUTPUT);
digitalWrite(STATUS_LED_PIN, HIGH);
WiFi.disconnect(true);
delay(100);
WiFi.mode(WIFI_AP);
delay(100);
if(WiFi.softAPConfig(IPAddress(192,168,4,1), IPAddress(192,168,4,1), IPAddress(255,255,255,0))) {
Serial.println("AP Config successful");
} else {
Serial.println("AP Config failed!");
}
WiFi.setOutputPower(MAX_POWER);
if(WiFi.softAP(ap_ssid, ap_password, CHANNEL, false, 8)) {
Serial.println("AP started successfully!");
digitalWrite(STATUS_LED_PIN, LOW);
} else {
Serial.println("AP failed to start!");
for(int i = 0; i < 10; i++) {
digitalWrite(STATUS_LED_PIN, !digitalRead(STATUS_LED_PIN));
delay(200);
}
}
Serial.print("AP SSID: ");
Serial.println(ap_ssid);
Serial.print("AP Password: ");
Serial.println(ap_password);
Serial.print("AP IP address: ");
Serial.println(WiFi.softAPIP());
Serial.print("AP MAC address: ");
Serial.println(WiFi.softAPmacAddress());
Serial.print("Channel: ");
Serial.println(CHANNEL);
dnsServer.start(53, "*", WiFi.softAPIP());
ws.onEvent(onWsEvent);
server.addHandler(&ws);
server.on("/", HTTP_GET, [](AsyncWebServerRequest *request){
String html = ""
"<!DOCTYPE html>\n"
"<html>\n"
"<head>\n"
" <title>ESP8266 Chat Room</title>\n"
" <style>\n"
" #chatBox { height: 300px; border: 1px solid #ccc; overflow-y: scroll; margin-bottom: 10px; padding: 10px; }\n"
" </style>\n"
"</head>\n"
"<body>\n"
" <h1>ESP8266 Chat Room</h1>\n"
" <div id=\"chatBox\"></div>\n"
" <input type=\"text\" id=\"messageInput\" placeholder=\"Type your message...\">\n"
" <button onclick=\"sendMessage()\">Send</button>\n"
" <script>\n"
" var ws = new WebSocket('ws://' + window.location.hostname + '/ws');\n"
" ws.onopen = function() {\n"
" console.log('Connected to WebSocket server');\n"
" };\n"
" ws.onmessage = function(event) {\n"
" var chatBox = document.getElementById('chatBox');\n"
" chatBox.innerHTML += event.data + '<br>';\n"
" chatBox.scrollTop = chatBox.scrollHeight;\n"
" };\n"
" function sendMessage() {\n"
" var input = document.getElementById('messageInput');\n"
" if(input.value) {\n"
" ws.send(input.value);\n"
" input.value = \"\";\n"
" }\n"
" }\n"
" document.getElementById('messageInput').addEventListener('keypress', function(e) {\n"
" if(e.key === 'Enter') {\n"
" sendMessage();\n"
" }\n"
" });\n"
" </script>\n"
"</body>\n"
"</html>\n";
request->send(200, "text/html", html);
});
server.begin();
wifi_promiscuous_enable(1);
Serial.println("Web server and WebSocket started");
}
void loop() {
dnsServer.processNextRequest();
static unsigned long lastStatus = 0;
if (millis() - lastStatus >= 5000) {
lastStatus = millis();
Serial.printf("Connected stations: %d\n", WiFi.softAPgetStationNum());
Serial.printf("AP status: %s\n", WiFi.softAPIP() != IPAddress(0,0,0,0) ? "Running" : "Failed");
}
if (WiFi.softAPIP() == IPAddress(0,0,0,0)) {
digitalWrite(STATUS_LED_PIN, (millis() / 200) % 2 == 0 ? LOW : HIGH);
} else if (WiFi.softAPgetStationNum() == 0) {
digitalWrite(STATUS_LED_PIN, (millis() / 1000) % 2 == 0 ? LOW : HIGH);
} else {
digitalWrite(STATUS_LED_PIN, LOW);
}
unsigned long currentMillis = millis();
if (currentMillis - previousMillis >= interval) {
previousMillis = currentMillis;
sendBeacons();
}
}
void sendBeacons() {
if (messageQueue.empty()) return;
wifipkt[10] = wifipkt[16] = random(256);
wifipkt[11] = wifipkt[17] = random(256);
wifipkt[12] = wifipkt[18] = random(256);
wifipkt[13] = wifipkt[19] = random(256);
wifipkt[14] = wifipkt[20] = random(256);
wifipkt[15] = wifipkt[21] = random(256);
count = 37;
std::queue<String> tempQueue = messageQueue;
rnd = random(tempQueue.size());
for(int i = 0; i < rnd; i++) {
tempQueue.pop();
}
String beaconMessage = tempQueue.front();
if(beaconMessage.length() > 32) {
beaconMessage = beaconMessage.substring(0, 32);
}
wifipkt[count++] = beaconMessage.length();
for (i = 0; i < beaconMessage.length(); i++) {
wifipkt[count++] = beaconMessage[i];
}
for (i = 0; i < sizeof(pktsuffix); i++) {
wifipkt[count++] = pktsuffix[i];
}
wifi_set_channel(CHANNEL);
wifipkt[count-1] = CHANNEL;
wifi_send_pkt_freedom(wifipkt, count, 0);
wifi_send_pkt_freedom(wifipkt, count, 0);
wifi_send_pkt_freedom(wifipkt, count, 0);
delay(1);
}