coppino/examples/simple-udp-server/simple-udp-server.ino

#include "coppino.h"
#include "ipv6.h"
#include "slip.h"
#include "udp.h"

/* an UDP application, which simply replies HELLO-WORLD-UDP */
int udp_server(char* output_buffer, const char* input_buffer, int len) {
  const char msg[] = "HELLO-WORLD-UDP\n";
  digitalWrite(13, !digitalRead(13));
  memcpy(output_buffer, msg, strlen(msg));
  return strlen(msg);
}

void setup() {
  pinMode(13, OUTPUT);

  /* Customize coppino library configuration settings by editing settings.h */

  /* setup serial for Internet connectivity
   * attach a SLIP daemon on the other endpoint; a good one is `tunslip6` by Contiki
   * $ tunslip6 -s /dev/ttyUSB0 -L -v5 -B 19200 2001:db8:1324::1/64
   * Note: the address given is the one on the host it is running on
  */
  Serial.begin(19200);

  /* set unique identifier of network hardware. It MUST be unique!
   * For example, this could be your microcontroller serial number
   * Note: pay attention to enter exactly 64 bits / 8 bytes
  */
  ipv6::setEUI("\xde\xad\xbe\xef\x12\x34\x56\x78");
  /* set global address -- will be overwritten if SLAAC is enabled and a Router Advertisement is received */
  ipv6::setGlobalAddress("\x20\x01\x04\x70\xc8\x44\x00\x31\x00\x00\x00\x00\x00\x00\xca\xfe");

  /* start a server un UDP port 80 */
  udp::set_handler(80, udp_server);
}

void loop() {
  /* network service routing */
  coppino::handler();
}