RN-XV + Arduino Uno = slow closing connection?

Wireless & IoT
1

I’m trying to send data quickly then close the http connection but it seems to take as long as 10 seconds after the data has been sent. Ideally, i’m shooting for 1 - 2 seconds but i can’t figure out what to set in order to close the connection faster. Anyone out there have any idea?

Setup:

Arduino IDE 1.0

WiFlySerial library

Arduino Uno

RN-XV

Xbee Break Out Board

Sketch:

#include <SoftwareSerial.h>
#include <Streaming.h>
#include <WiFlySerial.h>

#define RX 2
#define TX 3
#define BUFFER_SIZE 80

WiFlySerial wifi(RX, TX);
char buffer[BUFFER_SIZE];
unsigned long t1;
unsigned long t2;

void setup()
{
  Serial.begin(9600);
  Serial.println("Starting...");
  wifi.begin();
  wifi.setAuthMode(WIFLY_AUTH_WPA2_PSK);
  wifi.setJoinMode(WIFLY_JOIN_AUTO);
  wifi.setDHCPMode(WIFLY_DHCP_ON);
  wifi.SendCommand("set u m 0x1", ">",buffer, BUFFER_SIZE);
  wifi.SendCommand("set comm remote 0", ">",buffer, BUFFER_SIZE);
  wifi.SendCommand("set comm match 0x9", ">",buffer, BUFFER_SIZE);
  wifi.setPassphrase(passphrase);
  wifi.join(ssid);
  delay(1000);
  Serial << F("NETWORK") << endl
    << F("---MAC: ") << wifi.getMAC(buffer, BUFFER_SIZE) << endl
    << F("---IP: ") << wifi.getIP(buffer, BUFFER_SIZE) << endl
    << F("---Netmask: ") << wifi.getNetMask(buffer, BUFFER_SIZE) << endl
    << F("---Gateway: ") << wifi.getGateway(buffer, BUFFER_SIZE) << endl
    << F("---DNS: ") << wifi.getDNS(buffer, BUFFER_SIZE) << endl
    << F("---RSSI: ") << wifi.getRSSI(buffer, BUFFER_SIZE) << endl
    << F("---battery: ") <<  wifi.getBattery(buffer, BUFFER_SIZE) << endl;
  Serial << "Ready." << endl << endl;
}

void loop()
{
  wifi.getDeviceStatus();
  if(wifi.serveConnection())
  {
    t1 = millis();
    Serial << t1 << ":" << "Connected" << endl;
    wifi.ScanForPattern(buffer, BUFFER_SIZE, " HTTP/1.1", 250);
    Serial << "GET request,  bytes: " << strlen(buffer) << " request: " << buffer << endl;
    wifi << "HTTP/1.1 200 OK \r Content-Type: text/html;charset=UTF-8\r Connection: close \r\n\r\n \r" << millis() << "\r\n\r\n" << "\t";
    wifi.closeConnection();
    t2 = millis();
    Serial << t2 << ":" << "Connection Closed, Duration: " << (t2 -t1) / 1000 << " seconds" << endl;

  }
}

Serial Monitor Output:

Starting...
NETWORK
---MAC: ##:##:##:##:##:##
---IP: ###.###.###.###:2000
---Netmask: ###.###.###.###
---Gateway: ###.###.###.###
---DNS: ###.###.###.###
---RSSI: (-60) dBm
---battery: 3000
Ready.

60286:Connected
GET request,  bytes: 14 request: GET / HTTP/1.1
70853:Connection Closed, Duration: 10 seconds