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+/*
+ Telnet client
+
+ This sketch connects to a a telnet server (http://www.google.com)
+ using an Arduino Wiznet Ethernet shield. You'll need a telnet server
+ to test this with.
+ Processing's ChatServer example (part of the network library) works well,
+ running on port 10002. It can be found as part of the examples
+ in the Processing application, available at
+ http://processing.org/
+
+ Circuit:
+ * Ethernet shield attached to pins 10, 11, 12, 13
+
+ created 14 Sep 2010
+ modified 9 Apr 2012
+ by Tom Igoe
+
+ */
+
+#include <SPI.h>
+#include <Ethernet.h>
+
+// Enter a MAC address and IP address for your controller below.
+// The IP address will be dependent on your local network:
+byte mac[] = {
+ 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
+IPAddress ip(192,168,1,177);
+
+// Enter the IP address of the server you're connecting to:
+IPAddress server(1,1,1,1);
+
+// Initialize the Ethernet client library
+// with the IP address and port of the server
+// that you want to connect to (port 23 is default for telnet;
+// if you're using Processing's ChatServer, use port 10002):
+EthernetClient client;
+
+void setup() {
+ // start the Ethernet connection:
+ Ethernet.begin(mac, ip);
+ // Open serial communications and wait for port to open:
+ Serial.begin(9600);
+ while (!Serial) {
+ ; // wait for serial port to connect. Needed for Leonardo only
+ }
+
+
+ // give the Ethernet shield a second to initialize:
+ delay(1000);
+ Serial.println("connecting...");
+
+ // if you get a connection, report back via serial:
+ if (client.connect(server, 10002)) {
+ Serial.println("connected");
+ }
+ else {
+ // if you didn't get a connection to the server:
+ Serial.println("connection failed");
+ }
+}
+
+void loop()
+{
+ // if there are incoming bytes available
+ // from the server, read them and print them:
+ if (client.available()) {
+ char c = client.read();
+ Serial.print(c);
+ }
+
+ // as long as there are bytes in the serial queue,
+ // read them and send them out the socket if it's open:
+ while (Serial.available() > 0) {
+ char inChar = Serial.read();
+ if (client.connected()) {
+ client.print(inChar);
+ }
+ }
+
+ // if the server's disconnected, stop the client:
+ if (!client.connected()) {
+ Serial.println();
+ Serial.println("disconnecting.");
+ client.stop();
+ // do nothing:
+ while(true);
+ }
+}
+
+
+
+