#define IP_FORWARD 1
#include <ESP8266WiFi.h>
#include <WiFiUDP.h>
/* Set these to your desired credentials for ESP8266 AP. */
const char *ssid = "ESPap";
const char *password = "thereisnospoon";
IPAddress apIP(192, 168, 4, 1);
//const char* ssidExt = "dlink";
//const char* passwordExt = "";
// Setup credentials for original WiFi, that we plan to repeat
const char* ssidExt = "RT-WiFi_eea5";
const char* passwordExt = "";
const byte DNS_PORT = 53;
// A UDP instance to let us send and receive packets over UDP
WiFiUDP Udp;
byte packetBuffer[512]; //buffer to hold incoming and outgoing packets
WiFiUDP Udp8;
// Update these with values suitable for your network.
IPAddress ip(192, 168, 0, 13); //Node static IP
IPAddress gateway(192, 168, 0, 1);
IPAddress subnet(255, 255, 255, 0);
void setup()
{
Serial.begin(115200);
Serial.println();
WiFi.mode(WIFI_AP_STA);
//WiFi.mode(WIFI_AP);
Serial.println("!!!!!!!!!!!!!!!!!!!++");
WiFi.begin(ssidExt, passwordExt);
WiFi.config(ip, gateway, subnet);
//Wifi connection
while (WiFi.status() != WL_CONNECTED) {
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.print("Connected to ");
Serial.println(ssidExt);
Serial.print("IP address: ");
Serial.println(WiFi.localIP());
Serial.print("dnsIP address: ");
Serial.println(WiFi.dnsIP());
Serial.print("gatewayIP address: ");
Serial.println(WiFi.gatewayIP());
Serial.print("subnetMask address: ");
Serial.println(WiFi.subnetMask());
Serial.println("");
Serial.println("Configuring access point...");
/* You can remove the password parameter if you want the AP to be open. */
//WiFi.softAPConfig(apIP, apIP, IPAddress(255, 255, 255, 0));
WiFi.softAP(ssid, password);
IPAddress myIP = WiFi.softAPIP();
Serial.print("AP IP address: ");
Serial.println(myIP);
Udp.begin(DNS_PORT);
Udp8.begin(DNS_PORT);
}
void loop()
{
int noBytes = Udp.parsePacket();
if ( noBytes ) {
// Serial.print(millis() / 1000);
// Serial.print("
acket of ");
// Serial.print(noBytes);
// Serial.print(" received from ");
// Serial.print(Udp.remoteIP());
// Serial.print(":");
// Serial.println(Udp.remotePort());
// We've received a packet, read the data from it
Udp.read(packetBuffer, noBytes); // read the packet into the buffer
// display the packet contents in HEX
// for (int i = 1; i <= noBytes; i++) {
// Serial.print(packetBuffer[i - 1], HEX);
// if (i % 32 == 0) {
// Serial.println();
// }
// else Serial.print(' ');
// } // end for
// Serial.println();
IPAddress ip8(8, 8, 8, 8);
Udp8.beginPacket(ip8, DNS_PORT); //NTP requests are to port 123
Udp8.write(packetBuffer, noBytes);
Udp8.endPacket();
delay(100);
int cb = Udp8.parsePacket();
if (!cb) {
// Serial.println("no packet yet");
}
else {
// Serial.print("packet received, length=");
// Serial.println(cb);
byte packetBuffer8[cb];
Udp8.read(packetBuffer8, cb);
Udp.beginPacket(Udp.remoteIP(), Udp.remotePort());
Udp.write(packetBuffer8, cb);
Udp.endPacket();
}
} // end if
}
