text: /*
   *  Udp.cpp: Library to send/receive UDP packets.
   *
   * NOTE: UDP is fast, but has some important limitations (thanks to Warren Gray for mentioning these)
   * 1) UDP does not guarantee the order in which assembled UDP packets are received. This
   * might not happen often in practice, but in larger network topologies, a UDP
   * packet can be received out of sequence.
   * 2) UDP does not guard against lost packets - so packets *can* disappear without the sender being
   * aware of it. Again, this may not be a concern in practice on small local networks.
   * For more information, see http://www.cafeaulait.org/course/week12/35.html
   *
   * MIT License:
   * Copyright (c) 2008 Bjoern Hartmann
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   *
   * bjoern@cs.stanford.edu 12/30/2008
   */
  
  #ifndef _WIFIUDP_H_
  #define _WIFIUDP_H_
  
  #include <Arduino.h>
  #include <Udp.h>
  #include <cbuf.h>
  
  class WiFiUDP : public UDP {
  private:
    // int udp_server;
    IPAddress multicast_ip;
    uint16_t server_port;
  public:
    WiFiUDP();
    ~WiFiUDP();
    uint8_t begin(IPAddress a, uint16_t p);
    uint8_t begin(uint16_t p);
    uint8_t beginMulticast(IPAddress a, uint16_t p);
    void stop();
    size_t max_size();
    int beginMulticastPacket();
    int beginPacket();
    int beginPacket(IPAddress ip, uint16_t port);
    int beginPacket(const char *host, uint16_t port);
    int endPacket();
    size_t write(uint8_t);
    size_t write(const uint8_t *buffer, size_t size);
    int parsePacket();
    int available();
    int read();
    int read(unsigned char* buffer, size_t len);
    int read(char* buffer, size_t len);
    int peek();
    void setRemote_ip(IPAddress set_ip);
    void setRemote_port(uint16_t set_port);
    void flush();
    IPAddress remoteIP();
    uint16_t remotePort();
  };
  
  #endif /* _WIFIUDP_H_ */
  