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README.md

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+<h1>PENELITIAN PENGARUH MAC ADDRESS COLLISION PADA PERANGKAT YANG DAPAT MERUBAH MAC ADDRESS</h1>
+
+<h3>Gabriel Possenti Kheisa Drianasta<br>
+Program Studi Elektronika dan Instrumentasi, DIKE, FMIPA, UGM, Yogyakarta, Indonesia<br>
+gabrielkheisa@mail.ugm.ac.id</h3>
+<br><br>
+
+<ul>
+<li><a href="https://go.gabrielkheisa.xyz/skripsi">Draft skripsi</a></li>
+<li><a href="https://go.gabrielkheisa.xyz/ijeis">IJEIS</a></li>
+<li><a href="#">Data Penelitian</a></li>
+<li><a href="#">Source code NodeMCU</a></li>
+</ul>

source_nodemcu.cpp

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+#include <ESP8266WiFi.h>
+
+#include <ESP8266Ping.h>
+
+#include <ESP8266HTTPClient.h>
+
+#include <WiFiUDP.h>
+
+#include <ESP8266WebServer.h>
+
+const char * ssid = ""; //ganti nama hotspot
+const char * pass = ""; //ganti password
+
+//IPAddress localIP(192, 168, 1, 11);       // The desired IP address for the NodeMCU
+//IPAddress gateway(192, 168, 1, 1);       // IP address of the gateway/router
+//IPAddress subnet(255, 255, 255, 0);      // Subnet mask
+//IPAddress dns(8, 8, 8, 8);               // DNS server address
+
+WiFiClient client;
+
+ESP8266WebServer server(80);
+
+// 84:F3:EB:CC:03:EF default MAC
+// uint8_t newMACAddress[] = {0x84, 0xF3, 0xEB, 0xCC, 0x03, 0xEF};
+// uint8_t newMACAddress[] = {0x50, 0xD2, 0xF5, 0x2F, 0x21, 0x69}; // MAC router
+// uint8_t newMACAddress[] = {0x04, 0xe5, 0x98, 0x32, 0xD0, 0x1E}; // MAC Android
+// uint8_t newMACAddress[] = {0x34, 0x13, 0xE8, 0xC6, 0x4C, 0x42}; // MAC Komputer
+
+//04:E5:98:32:D0:1E
+
+uint8_t newMACAddress[] = {
+  0x34,
+  0x13,
+  0xE8,
+  0xC6,
+  0x4C,
+  0x42
+}; // MAC router (uji collision 1)
+
+// ping ec2.me-south-1.amazonaws.com 99.82.132.91
+
+void do_ping(uint8_t a, uint8_t b, uint8_t c, uint8_t d) {
+  IPAddress remoteIP(a, b, c, d); // Target
+
+  Serial.print("Pinging ");
+  Serial.println(remoteIP);
+
+  int pingTime = Ping.ping(remoteIP);
+  pingTime = Ping.averageTime();
+
+  if (pingTime > 0) {
+    Serial.print("Ping successful! Latency: ");
+    Serial.print(pingTime);
+    Serial.println(" ms");
+  } else {
+    Serial.println("Ping failed!");
+  }
+}
+
+void do_curl(const char * url) {
+  HTTPClient http;
+
+  Serial.print("HTTP GET request to: ");
+  Serial.println(url);
+
+  http.begin(client, url); // Specify the URL
+
+  int httpCode = http.GET(); // Perform the GET request
+
+  if (httpCode > 0) { // Check for a successful request
+    Serial.printf("HTTP GET request successful. Response code: %d\n", httpCode);
+
+    String payload = http.getString(); // Get the response payload (HTML content)
+
+    Serial.println("Response (first 10 characters):");
+    Serial.println(payload.substring(0, 10));
+  } else {
+    Serial.printf("HTTP GET request failed. Error code: %d\n", httpCode);
+  }
+
+  http.end(); // Close the connection
+}
+
+void traceroute(uint8_t a, uint8_t b, uint8_t c, uint8_t d) {
+  IPAddress destinationIP(a, b, c, d); // Target
+  Serial.println("Traceroute:");
+  int udpPort = 33434;
+
+  const int maxHops = 30; // Maximum number of hops to attempt
+  for (int ttl = 1; ttl <= maxHops; ttl++) {
+    WiFiUDP udp;
+    IPAddress hopIP = udp.remoteIP();
+    udp.beginPacketMulticast(destinationIP, udpPort, WiFi.localIP(), ttl);
+    udp.write("Traceroute");
+    udp.endPacket();
+
+    Serial.print("Hop ");
+    Serial.print(ttl);
+    Serial.print(": ");
+
+    int packetSize = udp.parsePacket();
+    if (packetSize) {
+      Serial.print(hopIP);
+    } else {
+      Serial.print("*");
+    }
+
+    Serial.println();
+
+    // Stop tracing if the destination is reached
+    if (hopIP == destinationIP) {
+      break;
+    }
+  }
+}
+
+// run HTTP server
+void http_server() {
+  server.send(200, "text/plain", "Hello World!");
+}
+
+void setup() {
+  Serial.begin(115200);
+  delay(10);
+  Serial.print(" Connect to : ");
+  Serial.println(ssid);
+  WiFi.begin(ssid, pass);
+  while (WiFi.status() != WL_CONNECTED) {
+    delay(500);
+    Serial.print("….");
+  }
+  Serial.print("\n");
+  Serial.print("IP address : ");
+  Serial.print(WiFi.localIP());
+  Serial.print("\n");
+  Serial.print("Connect to : ");
+  Serial.println(ssid);
+  Serial.print("\n");
+  Serial.println(WiFi.macAddress());
+  wifi_set_macaddr(STATION_IF, & newMACAddress[0]);
+  Serial.print("\n");
+  Serial.println(WiFi.macAddress());
+
+  server.on("/", http_server);
+  server.begin();
+
+  Serial.println("HTTP server started.");
+
+}
+
+void loop() {
+
+    // Uji HTTP server
+    server.handleClient();
+
+    /*
+    // Uji ping dan HTTP GET
+    do_ping(192,168,1,11);
+    do_ping(192,168,1,1);
+    do_ping(192,168,1,74);
+    do_ping(192,168,1,99);
+    do_curl("http://192.168.1.11"); // Alamat NodeMCU
+    do_curl("http://192.168.1.1"); // Alamat router
+    do_curl("http://192.168.1.74:1111"); // Alamat Android
+    do_curl("http://192.168.1.99"); // Alamat komputer
+    // traceroute(192,168,1,1);
+    // traceroute(192,168,1,99);
+    delay(1000); 
+
+    */
+}