SIM808-TCP-TEST

#include <SoftwareSerial.h>

SoftwareSerial mySerial(7, 8);
#include<stdio.h>
#include<string.h>
#define DEBUG true
int pon=9;
void setup()
{
  Serial.begin(9600);
  mySerial.begin(9600);
  delay(1000);
  pinMode(pon, OUTPUT);
  digitalWrite(pon, HIGH);
  delay(3000);
  digitalWrite(pon, LOW);
  delay(1000);
  Serial.println("After 3s, test begin!!");
  delay(3000);
}

void loop()
{
     sendData("AT+CCID",3000,DEBUG);
     sendData("AT+CREG?",3000,DEBUG);
     sendData("AT+CGATT=1",1000,DEBUG);
     sendData("AT+CGACT=1,1",1000,DEBUG);
     sendData("AT+CSTT=CMNET",3000,DEBUG);
     sendData("AT+CIICR",1000,DEBUG);
     sendData("AT+CIFSR",1000,DEBUG);
      sendData("AT+CDNSGIP=\"www.sim.com\"",1000,DEBUG);
      sendData("AT+CDNSGIP=\"a b c d e f\"",1000,DEBUG);
      sendData("AT+CIPSTART=\"TCP\",\"WWW.SIM.COM\",80",5000,DEBUG);
      delay(10000);
      sendData("AT+CIPSEND=6",1000,DEBUG);
      sendData("123456",1000,DEBUG);
     delay(2000);
     sendData("AT+CIPCLOSE",1000,DEBUG);
}

String sendData(String command, const int timeout, boolean debug)
{
    String response = "";
    mySerial.println(command);
    long int time = millis();
    while( (time+timeout) > millis())
    {
      while(mySerial.available())
      {
        char c = mySerial.read();
        response+=c;
      }
    }
    if(debug)
    {
      Serial.print(response);
    }
    return response;
}