Arduino Phone and Ethernet

// Server that can be pinged

#include <SPI.h>
#include <Ethernet.h>

int led1 = 5;
int led2 = 6;
int led3 = 7;

int oneOff = true;
int twoOff = true;
int threeOff = true;

// media access control
byte mac[] = {0x90,0xA2,0xDA,0x00,0xFD,0x3C};
byte ip[] = {192,168,1,133};

EthernetServer server = EthernetServer(12345);

void setup () {
    pinMode(led1, OUTPUT);
    pinMode(led2, OUTPUT);
    pinMode(led3, OUTPUT);
    Ethernet.begin(mac,ip);
        Serial.begin(9600);
    delay(1000);
    Serial.println(Ethernet.localIP());
    server.begin();
}

void loop() {
    EthernetClient client = server.available();
    if(client) {
        char thisChar = client.read();
        if (thisChar == 'a')  {
            if(oneOff) {
                digitalWrite(led1, HIGH);
                oneOff = false;
                server.println("light 1 on");
            }
            else {
                digitalWrite(led1, LOW);
                oneOff = true;
                server.println("light 1 off");
            }
        }
        else if(thisChar == 's') {
            if(twoOff) {
                digitalWrite(led2, HIGH);
                twoOff = false;
                server.println("light 2 on");
            }
            else {
                digitalWrite(led2, LOW);
                twoOff = true;
                server.println("light 2 off");
            }
        }
        else if (thisChar == 'd') {
            if(threeOff) {
                digitalWrite(led3, HIGH);
                threeOff = false;
                server.println("light 3 on");
            }
            else {
                digitalWrite(led3, LOW);
                threeOff = true;
                server.println("light 3 off");
            }
        }
    }
}