//  UDPStorm -  Send massive UDP to measure Arduion Ethernet Performance
#include <SPI.h>          // needed für Arduino versions later than 0018
#include <Ethernet.h>     // Ethernet Library
#include <Ethernetudp.h>  // UDP library from: bjoern@cs.stanford.edu 12/30/2008

byte localmac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };  //  MAC address
IPAddress localip(192, 168, 178, 177);   // local port to listen on
unsigned int localport = 8888;     

IPAddress destinationip(192, 168, 178, 34);
unsigned int destinationport = 8888;      // local port to listen on
const int buffersize = 160;
char ReplyBuffer[buffersize]; // buffers with 100 bytes
EthernetUDP udp; // An EthernetUDP instance to send packets over UDP

void setup() {
  für (int i = 0 ; i < buffersize; i++) {
      ReplyBuffer[i]='A';
  }
  Ethernet.begin(localmac,localip);    // start the Ethernet and UDP:
  udp.begin(localport);
}

void loop() {  // send UDP Pakets
  udp.beginPacket(destinationip, destinationport);
  udp.write(ReplyBuffer);
  udp.endPacket();
}