teensyServer

#include <SPI.h>
#include <NativeEthernet.h>
/**Function defs**/
void svgHeader();
void svgFooter();
void polyLineBegin();
void polyLineEnd();
void startClient();
void endClient();


byte mac[] = {
  0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED
};
//IPAddress ip(192, 168, 0, 177);
IPAddress ip(10, 1, 0, 177);
EthernetServer server(80);

void setup() {
    delay(5000); //you want this here belive me. reason: tl;dr
  // Open serial communications and wait for port to open:
  Serial.begin(9600);
  while (!Serial) {
    ; // wait for serial port to connect. Needed for native USB port only
  }
  Serial.println("Ethernet WebServer Example");

  // start the Ethernet connection and the server:
  Ethernet.begin(mac, ip);

  // Check for Ethernet hardware present
  if (Ethernet.hardwareStatus() == EthernetNoHardware) {
    Serial.println("Ethernet shield was not found.  Sorry, can't run without hardware. :(");
    while (true) {
      delay(1); // do nothing, no point running without Ethernet hardware
    }
  }
  if (Ethernet.linkStatus() == LinkOFF) {
    Serial.println("Ethernet cable is not connected.");
  }

  // start the server
  server.begin();
  Serial.print("server is at ");
  Serial.println(Ethernet.localIP());
}

/*Global Vars*
* located here as to wait for defintion of client as related to server in
* setup function
*/
EthernetClient client = server.available();
int potX = A8;
int potY = A9;
int sensorValX = 0;
int sensorValY = 0;
int oldX = 0;
int oldY = 0;

void loop() {
    // listen for incoming clients
//  EthernetClient client = server.available();
  if (client) {
    // an http request ends with a blank line
    boolean currentLineIsBlank = true;
    while (client.connected()) {
       if (client.available()) {
          char c = client.read();
          Serial.write(c);
        // if you've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so you can send a reply
        if (c == '\n' && currentLineIsBlank) {
          startClient();
          // output the value of each analog input pin
  sensorValX = analogRead(potX);
  sensorValY = analogRead(potY);
/*dont draw if pots not changing
  Ah but the sensors are noisy, so thresholding
*/
int threshold =3;
int xVariance = abs(sensorValX-oldX);
int yVariance = abs(sensorValY-oldY);
if (((xVariance >=threshold) && (yVariance >= threshold)) ||xVariance >=threshold || yVariance >=threshold){
    oldX=sensorValX;
    oldY=sensorValY;

    client.print(sensorValX);
    client.print(",");
    client.print(sensorValY);
    client.print(",");
    delay(100);

    }else{
       ; //dont do shi.
    }
endClient();
}
//          client.println("<a href=\"/?button1on\">Save Drawing</a>");
          break;
        }
      }
    }
    // give the web browser time to receive the data
    delay(1);
    // close the connection:
    client.stop();
    Serial.println("client disconnected");
  } // end loop

/**Functions**/
void startClient(){

          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connection: close");  // the connection will be closed after completion of the response
          client.println("Refresh: 5");  // refresh the page automatically every 5 sec
          client.println();
          client.println("<!DOCTYPE HTML>");
          client.println("<html>");
          client.println("<body>");

  }
void endClient(){
  client.println("</body>");
  client.println("</html>");

  }

void polyLineBegin(){
  //Serial.println ("<polyline points=\""); //x,y points go here
  client.println ("<polyline points=\"");
  }

void polyLineEnd(){
  // Serial.println ("0, 0\" stroke=\"red\" fill=\"transparent\" stroke-width=\"5\"/>");  //a dirty hack to avoid dealing with 1 last trailing comma.
   client.println ("0, 0\" stroke=\"red\" fill=\"transparent\" stroke-width=\"5\"/>");
  }

void svgHeader(){
//Serial.println("<svg width=\"1023\" height=\"1023\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">");
client.println("<svg width=\"1023\" height=\"1023\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\">");
  };

void svgFooter(){
//Serial.println ("</svg>");
  client.println("</svg>");
  };