UIPEthernet EchoServer example and test

Below example code. from UIPEthernet library.



/*
 * UIPEthernet EchoServer example.
 *
 * UIPEthernet is a TCP/IP stack that can be used with a enc28j60 based
 * Ethernet-shield.
 *
 * UIPEthernet uses the fine uIP stack by Adam Dunkels <adam@sics.se>
 *
 *      -----------------
 *
 * This Hello World example sets up a server at 192.168.1.6 on port 1000.
 * Telnet here to access the service.  The uIP stack will also respond to
 * pings to test if you have successfully established a TCP connection to
 * the Arduino.
 *
 * This example was based upon uIP hello-world by Adam Dunkels <adam@sics.se>
 * Ported to the Arduino IDE by Adam Nielsen <malvineous@shikadi.net>
 * Adaption to Enc28J60 by Norbert Truchsess <norbert.truchsess@t-online.de>
 */

#include
// The connection_data struct needs to be defined in an external file.
#include
#include

EthernetServer server = EthernetServer(1000);

void setup()
{
  Serial.begin(9600);
  uint8_t mac[6] = {0x00,0x01,0x02,0x03,0x04,0x05};
  IPAddress myIP(192,168,1,177);
  Ethernet.begin(mac,myIP);
  server.begin();
}
void loop()
{
  size_t size;
  if (EthernetClient client = server.available())
    {
      if (client)
        {
          while((size = client.available()) > 0)
            {
              uint8_t* msg = (uint8_t*)malloc(size);
              size = client.read(msg,size);
              Serial.write(msg,size);
              client.write(msg,size);
              free(msg);
            }
        }
    }
}


Testing.

$ telnet 192.168.1.177 1000
Trying 192.168.1.177...
Connected to 192.168.1.177.
Escape character is '^]'.

( typing keyboard ... for test )