Below is the code I used to implement web socket:
try {
console.log('wss://' + hostname + ':' + port + endpoint);
webSocket = new WebSocket(webSocketURL);
webSocket.onmessage = function (event) {
//console.log('send message successfully.');
var obj = JSON.parse(event.data);
append_data(obj, market_pair);
};
} catch (exception) {
console.log('Exception handle!');
console.error(exception);
}
Although my page supports HTTPS and I am using the wss protocol, I encountered an error stating that "Firefox can’t establish a connection to the server at wss://domainname.com:4008/order.php." When I load the page using simple HTTP and ws in Websocket, it works fine. However, when using wss, it shows the above error. The same issue occurs in Google Chrome as well. My SSL certificate is properly installed on the server, and both hosting and domain are provided by GoDaddy who confirmed that the certificate was installed correctly.
The server-side socket running in PHP works perfectly; but I cannot connect to that socket port using wss://.
I discovered that I'm unable to perform the handshake with my PHP code because the content received through socket read is encrypted.
function doHandshake($received_header, $client_socket_resource, $host_name, $port) {
echo $received_header;
$headers = array();
$lines = preg_split("/\r\n/", $received_header);
foreach ($lines as $line) {
$line = chop($line);
if (preg_match('/\A(\S+): (.*)\z/', $line, $matches)) {
$headers[$matches[1]] = $matches[2];
}
}
$secKey = $headers['Sec-WebSocket-Key'];
echo $headers['Sec-WebSocket-Key'];
$secAccept = base64_encode(pack('H*', sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11')));
//$secAccept = base64_encode(sha1($secKey . '258EAFA5-E914-47DA-95CA-C5AB0DC85B11'));
$buffer = "HTTP/1.1 101 Web Socket Protocol Handshake\r\n" .
"Upgrade: websocket\r\n" .
"Connection: Upgrade\r\n" .
"WebSocket-Origin: $host_name\r\n" .
"WebSocket-Location: wss://$host_name:$port/websocket/btc_boon_pair.php\r\n" .
"Sec-WebSocket-Accept:$secAccept\r\n\r\n";
socket_write($client_socket_resource, $buffer, strlen($buffer));
}
In my handshake function, $headers['Sec-WebSocket-Key'] is undefined due to encryption in $received_header.
Can someone suggest a solution to this issue? I need to run the PHP file as a daemon and connect using the wss protocol.