#ifndef COPPINO_UDP_H
#define COPPINO_UDP_H

#include "Arduino.h"
#include "ipv6.h"

namespace udp {
  class UDPPacket {
    private:
      char packet[ipv6::LEN - 40];
    public:
      void setSrcPort(uint16_t port);
      uint16_t getSrcPort();
      void setDstPort(uint16_t port);
      uint16_t getDstPort();
      const char* UDPPacket::getPayload();
      void setPayload(const char* payload, int len);  /* also sets proper length */
      void computeChecksum(const ipv6::IPv6Addr* src_addr, const ipv6::IPv6Addr* dst_addr, int len);  /* computes and updates checksum in the packet */
  };

  /* UDP handler for lower layer protocol */
  int handleUDP(char* output_buffer, const char* input_buffer, int len);

  /* pointer to server handler function */
  extern int(*server_handler) (char* output_buffer, const char* buffer, int size);
  extern uint16_t server_port;
  void set_handler(uint16_t port, int(* handler) (char* output_buffer, const char* input_buffer, int size));
}

#endif