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Ethernet : Server class

## begin()

#### Description

Tells the server to begin listening for incoming connections.

#### Syntax

server.begin()

#### Parameters

None

#### Returns

None

#### Example

    #include <Ethernet.h>

    // network configuration.  gateway and subnet are optional.
    byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
    byte ip[] = { 10, 0, 0, 177 };
    byte gateway[] = { 10, 0, 0, 1 };
    byte subnet[] = { 255, 255, 0, 0 };

    // telnet defaults to port 23
    Server server = Server(23);

    void setup()
    {
      // initialize the ethernet device
      Ethernet.begin(mac, ip, gateway, subnet);

      // start listening for clients
      server.begin();
    }

    void loop()
    {
      Client client = server.available();
      if (client) {
        server.write(client.read());
      }
    }

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