Hello guys,
I am working on a project in which Arduino is supposed to send receive data from remote server using websocket connection. I have used the reference code from this git repository. I have modified the client code to work with the Arduino_CC3000 library.
I am facing the problem to connect to eho.websocket.org as per the demo websocketclient.ino example.
it is not receiving any response from the server.
I am stuck and not getting the way to get out of it.
here is my code which i have modified
#include <Adafruit_CC3000.h>
#include <ccspi.h>
#include <SPI.h>
#include <string.h>
#include <WebSocketClient.h>
#include "utility/debug.h"
// These are the interrupt and control pins
#define ADAFRUIT_CC3000_IRQ 3 // MUST be an interrupt pin!
// These can be any two pins
#define ADAFRUIT_CC3000_VBAT 5
#define ADAFRUIT_CC3000_CS 10
// Use hardware SPI for the remaining pins
// On an UNO, SCK = 13, MISO = 12, and MOSI = 11
Adafruit_CC3000 cc3000 = Adafruit_CC3000(ADAFRUIT_CC3000_CS, ADAFRUIT_CC3000_IRQ, ADAFRUIT_CC3000_VBAT,
SPI_CLOCK_DIVIDER); // you can change this clock speed
#define WLAN_SSID "UNSTOPPABLE" // cannot be longer than 32 characters!
#define WLAN_PASS "8878333344"
// Security can be WLAN_SEC_UNSEC, WLAN_SEC_WEP, WLAN_SEC_WPA or WLAN_SEC_WPA2
#define WLAN_SECURITY WLAN_SEC_WPA2
#define IDLE_TIMEOUT_MS 3000 // Amount of time to wait (in milliseconds) with no data
// received before closing the connection. If you know the server
// you're accessing is quick to respond, you can reduce this value.
// What page to grab!
#define WEBSITE "www.websocket.org"
//#define WEBPAGE "/testwifi/index.html"
// Here we define a maximum framelength to 64 bytes. Default is 256.
#define MAX_FRAME_LENGTH 64
// Define how many callback functions you have. Default is 1.
#define CALLBACK_FUNCTIONS 1
Adafruit_CC3000_Client www;
WebSocketClient webSocketClient;
/**************************************************************************/
/*!
@brief Sets up the HW and the CC3000 module (called automatically
on startup)
*/
/**************************************************************************/
uint32_t ip;
void setup(void)
{
Serial.begin(115200);
Serial.println(F("Hello, CC3000!\n"));
Serial.print("Free RAM: ");
Serial.println(getFreeRam(), DEC);
/* Initialise the module */
Serial.println(F("\nInitializing..."));
if (!cc3000.begin())
{
Serial.println(F("Couldn't begin()! Check your wiring?"));
while(1);
}
// Optional SSID scan
// listSSIDResults();
Serial.print(F("\nAttempting to connect to "));
Serial.println(WLAN_SSID);
if (!cc3000.connectToAP(WLAN_SSID, WLAN_PASS, WLAN_SECURITY)) {
Serial.println(F("Failed!"));
while(1);
}
Serial.println(F("Connected!"));
/* Wait for DHCP to complete */
Serial.println(F("Request DHCP"));
while (!cc3000.checkDHCP())
{
delay(100); // ToDo: Insert a DHCP timeout!
}
/* Display the IP address DNS, Gateway, etc. */
while (! displayConnectionDetails()) {
delay(1000);
}
ip = 0;
// Try looking up the website's IP address
Serial.print(WEBSITE);
Serial.print(F(" -> "));
while (ip == 0) {
if (! cc3000.getHostByName(WEBSITE, &ip)) {
Serial.println(F("Couldn't resolve!"));
}
delay(500);
}
cc3000.printIPdotsRev(ip);
// Optional: Do a ping test on the website
/*
Serial.print(F("\n\rPinging ")); cc3000.printIPdotsRev(ip); Serial.print("...");
replies = cc3000.ping(ip, 5);
Serial.print(replies); Serial.println(F(" replies"));
*/
/* Try connecting to the website.
Note: HTTP/1.1 protocol is used to keep the server from closing the connection before all data is read.
*/
www = cc3000.connectTCP(ip, 80);
if (www.connected()) {
/* www.fastrprint(F("GET "));
www.fastrprint(WEBPAGE);
www.fastrprint(F(" HTTP/1.1\r\n"));
www.fastrprint(F("Host: ")); www.fastrprint(WEBSITE); www.fastrprint(F("\r\n"));
www.fastrprint(F("\r\n"));
www.println();*/
}
else {
Serial.println(F("Connection failed"));
return;
}
Serial.println(F("-------------------------------------"));
/* Read data until either the connection is closed, or the idle timeout is reached. */
/* unsigned long lastRead = millis();
while (www.connected() && (millis() - lastRead < IDLE_TIMEOUT_MS)) {
while (www.available()) {
char c = www.read();
Serial.print(c);
lastRead = millis();
}
}
www.close();
Serial.println(F("-------------------------------------"));*/
/* You need to make sure to clean up after yourself or the CC3000 can freak out */
/* the next time your try to connect ... */
/* Serial.println(F("\n\nDisconnecting"));
cc3000.disconnect();*/
// Handshake with the server
webSocketClient.path = "/echo.html";
webSocketClient.host = WEBSITE;
if (webSocketClient.handshake(www)) {
Serial.println("Handshake successful");
}
else {
Serial.println("Handshake failed.");
while(1) {
// Hang on failure
}
}
}
void loop(void)
{
String data;
if (www.connected()) {
/* data = webSocketClient.getData();
if (data.length() > 0) {
Serial.print("Received data: ");
Serial.println(data);
}*/
// capture the value of analog 1, send it along
pinMode(1, INPUT);
data = String(analogRead(1));
webSocketClient.sendData(data);
}
else {
Serial.println("Client disconnected.");
while (1) {
// Hang on disconnect.
}
}
// wait to fully let the client disconnect
delay(3000);
}
/**************************************************************************/
/*!
@brief Begins an SSID scan and prints out all the visible networks
*/
/**************************************************************************/
void listSSIDResults(void)
{
uint32_t index;
uint8_t valid, rssi, sec;
char ssidname[33];
if (!cc3000.startSSIDscan(&index)) {
Serial.println(F("SSID scan failed!"));
return;
}
Serial.print(F("Networks found: "));
Serial.println(index);
Serial.println(F("================================================"));
while (index) {
index--;
valid = cc3000.getNextSSID(&rssi, &sec, ssidname);
Serial.print(F("SSID Name : "));
Serial.print(ssidname);
Serial.println();
Serial.print(F("RSSI : "));
Serial.println(rssi);
Serial.print(F("Security Mode: "));
Serial.println(sec);
Serial.println();
}
Serial.println(F("================================================"));
cc3000.stopSSIDscan();
}
/**************************************************************************/
/*!
@brief Tries to read the IP address and other connection details
*/
/**************************************************************************/
bool displayConnectionDetails(void)
{
uint32_t ipAddress, netmask, gateway, dhcpserv, dnsserv;
if(!cc3000.getIPAddress(&ipAddress, &netmask, &gateway, &dhcpserv, &dnsserv))
{
Serial.println(F("Unable to retrieve the IP Address!\r\n"));
return false;
}
else
{
Serial.print(F("\nIP Addr: "));
cc3000.printIPdotsRev(ipAddress);
Serial.print(F("\nNetmask: "));
cc3000.printIPdotsRev(netmask);
Serial.print(F("\nGateway: "));
cc3000.printIPdotsRev(gateway);
Serial.print(F("\nDHCPsrv: "));
cc3000.printIPdotsRev(dhcpserv);
Serial.print(F("\nDNSserv: "));
cc3000.printIPdotsRev(dnsserv);
Serial.println();
return true;
}
}
Here what I get when i try to connect to the echo.websocket.org
Hello, CC3000!
Free RAM: 581
Initializing...
Attempting to connect to UNSTOPPABLE
Connected!
Request DHCP
IP Addr: 192.168.1.3
Netmask: 255.255.255.0
Gateway: 192.168.1.1
DHCPsrv: 192.168.1.1
DNSserv: 192.168.1.1
www.websocket.org -> 174.129.224.73-------------------------------------
Client connected
Sending websocket upgrade headers
Analyzing response headers
It hangs on analyzing response. please someone help me with this. I need guidance.