**WiFi Connection** rev_01

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    - Project: **WiFi Connection**
    - Source Code NOT compiled for: ESP32 DevKit V1
    - Source Code created on: 2025-04-22 18:11:00

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/****** SYSTEM REQUIREMENTS *****/
/****** SYSTEM REQUIREMENT 1 *****/
    /* Create a firmware that function as a MAC sniffer */
    /* and post data to an api */
/****** END SYSTEM REQUIREMENTS *****/

/* START CODE */

/****** DEFINITION OF LIBRARIES *****/
#include <WiFi.h>
#include <WiFiClient.h>
#include <HTTPClient.h>

/****** FUNCTION PROTOTYPES *****/
void setup(void);
void loop(void);
void startWiFi();
void sniffMACAddresses();
void postDataToAPI(const String &macAddress);

/****** GLOBAL VARIABLES *****/
const char* ssid = "your_SSID"; // Replace with your WiFi SSID
const char* password = "your_PASSWORD"; // Replace with your WiFi password
const char* apiEndpoint = "http://your_api_endpoint"; // Replace with your API endpoint

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

void loop(void)
{
    sniffMACAddresses();
    delay(10000); // Delay between scans
}

void startWiFi() {
    // Connect to WiFi
    Serial.print("Connecting to WiFi...");
    WiFi.begin(ssid, password);
    while (WiFi.status() != WL_CONNECTED) {
        delay(1000);
        Serial.print(".");
    }
    Serial.println("Connected to WiFi");
}

void sniffMACAddresses() {
    // Scan for available networks
    int n = WiFi.scanNetworks();
    Serial.println("Scan complete, found networks:");
    for (int i = 0; i < n; ++i) {
        String macAddress = WiFi.BSSIDstr(i); // Get MAC address of the network
        Serial.print("Network: ");
        Serial.print(WiFi.SSID(i));
        Serial.print(" | MAC: ");
        Serial.println(macAddress);

        // Post MAC address to API
        postDataToAPI(macAddress);
    }
}

void postDataToAPI(const String &macAddress) {
    if (WiFi.status() == WL_CONNECTED) {
        HTTPClient http;
        http.begin(apiEndpoint); // Specify the URL
        http.addHeader("Content-Type", "application/json"); // Specify content-type header

        // Create JSON payload
        String payload = "{\"macAddress\":\"" + macAddress + "\"}";

        int httpResponseCode = http.POST(payload); // Send the request
        if (httpResponseCode > 0) {
            String response = http.getString(); // Get response
            Serial.println(httpResponseCode); // Print return code
            Serial.println(response); // Print response
        } else {
            Serial.print("Error on sending POST: ");
            Serial.println(httpResponseCode);
        }
        http.end(); // Free resources
    } else {
        Serial.println("WiFi not connected");
    }
}

/* END CODE */