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digistump-sam/libraries/DigiFi/examples/EthernetCompatible/ChatServer/ChatServer.ino

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+/*
+ Chat  Server
+
+ A simple server that distributes any incoming messages to all
+ connected clients.  To use telnet to  your device's IP address and type.
+ You can see the client's input in the serial monitor as well.
+ Using a DigiX.
+
+ Circuit:
+
+ * Analog inputs attached to pins A0 through A5 (optional)
+
+ created 18 Dec 2009
+ by David A. Mellis
+ modified 9 Apr 2012
+ by Tom Igoe
+ modified Dec 22, 2013 for use with DigiX by Erik Kettenburg
+
+ */
+
+#include <DigiFi.h>
+
+
+DigiFi server;
+boolean alreadyConnected = false; // whether or not the client was connected previously
+
+void setup() {
+
+  
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  //DigiX trick - since we are on serial over USB wait for character to be entered in serial terminal
+  while(!Serial.available()){
+    Serial.println("Enter any key to begin");
+    delay(1000);
+  }
+
+  // start listening for clients
+  server.begin();
+  server.server(8080); //connect to it on port 8080
+
+  while (server.ready() != 1)
+    {
+      Serial.println("Connecting to network...");
+      delay(1000);
+    } 
+
+  Serial.print("Chat server address:");
+  Serial.println(server.localIP());
+}
+
+void loop() {
+  // wait for a new client:
+
+  // when the client sends the first byte, say hello:
+  if (server.available() > 0) {
+    if (!alreadyConnected) {
+      // clead out the input buffer:
+      server.flush();
+      Serial.println("We have a new client");
+      server.println("Hello, client!");
+      alreadyConnected = true;
+    }
+
+    
+      // read the bytes incoming from the client:
+      char thisChar = server.read();
+      // echo the bytes back to the client:
+      server.write(thisChar);
+      // echo the bytes to the server as well:
+      Serial.write(thisChar);
+  }
+  
+}
+
+
+