I have implemented web socket using below code,
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);
}
My page is https supported so I am using wss protocol. but issue is it gives me error that "Firefox can’t establish a connection to the server at wss://domainname.com:4008/order.php"
if I will load the page using simple http and use ws in websocket then it is working fine but with wss it shows above error. same way in google chrome it will also not able to connect.
My ssl certificate is installed correctly in server and my hosting and domain provided in godaddy and they told me that certificate is installed correctly.
I am running server side socket in php and it is working fine just now able to connect to that socket port using wss://
I have found that I am not able to do handshak using my php code because my php file is running in background and the content I am getting by 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));
}
this is my handshak function $headers['Sec-WebSocket-Key'] is undefined because $received_header is encrypted.
can anyone suggest the solution of this issue? I have to run php file as daemon and want to connect using wss protocol.
Ok finally I solved the issue.
due to the SSL encryption it is not able to read socket in my php daemon file. So I get solution from below answer
https://serverfault.com/questions/804862/apache-mod-proxy-forward-secure-websocket-to-non-secure
we can use proxy pass in apache so it will send all request with /websocket to the other ws://host:port/
after this it is working perfectly.
Also make sure that domain name is not using proxy because due to that my above solution is not worked but After removing proxy from DNS settings it started working.
In my case, I was using a VPS on Dreamhost.com and thus couldn't change Apache configuration files. However, I used this library to start secure socket server via following code:
use WSSC\Components\ServerConfig;
use WSSC\WebSocketServer;
$config = new ServerConfig();
$config->setIsSsl(true)->setAllowSelfSigned(true)
->setCryptoType(STREAM_CRYPTO_METHOD_SSLv23_SERVER)
->setLocalCert("./tests/certs/cert.pem")->setLocalPk("./tests/certs/key.pem")
->setPort(8888);
$websocketServer = new WebSocketServer(new ServerHandler(), $config);
$websocketServer->run();
I filled cert.pem and key.pem files with proper values from Dreamhost dashboard -> Websites -> Secure Certificates section.
Related
I'm trying to connect a python3 socket with a JavaScript WebSocket. I'm testing the server code on localhost:8080, and connecting with Chrome(94.0).
The WebSocket client and the socket server do establish a connection. However, the connection would be shut down if the server did not follow the protocol and respond to the handshake. According to the protocol, the client WebSocket sends a utf-8 encoded GET request to the socket server, and the server must parse that request in order to complete the handshake.
What I get from the client is this:
\x16\x03\x01\x02\x00\x01\x00\x01\xfc\x03\x03\x97t\xb1\xf7\xac\x99\x91\xd4\xf5\n\xdf\xc3X\x8af<\xbe\x99(0\x88\x9a!\xc6\xc9\x17]\xfe\xd9sP\xcc \xa8\xcf\x90{\x8a\xfcm\xbcj-5\xdf\xf90\x81\xc8Y\xc1\x85q"\xfe!C\xbb\t\xbd}\xe0\x8d\xf1\xe5\x00 \x1a\x1a\x13\x01\x13\x02\x13\x03\xc0+\xc0/\xc0,\xc00\xcc\xa9\xcc\xa8\xc0\x13\xc0\x14\x00\x9c\x00\x9d\x00/\x005\x01\x00\x01\x93\x1a\x1a\x00\x00\x00\x17\x00\x00\xff\x01\x00\x01\x00\x00\n\x00\n\x00\x08\xfa\xfa\x00\x1d\x00\x17\x00\x18\x00\x0b\x00\x02\x01\x00\x00#\x00\x00\x00\x05\x00\x05\x01\x00\x00\x00\x00\x00\r\x00\x12\x00\x10\x04\x03\x08\x04\x04\x01\x05\x03\x08\x05\x05\x01\x08\x06\x06\x01\x00\x12\x00\x00\x003\x00+\x00)\xfa\xfa\x00\x01\x00\x00\x1d\x00 \xfa)\xd5\x85<\x81.\x7f\xc0\x87wA!\xf1\xc9\xf80\xeb\x01\xdc\xed3m\xd1\x98\xd6\xd8\xd7\x7f#\rM\x00-\x00\x02\x01\x01\x00+\x00\x0b\n\x8a\x8a\x03\x04\x03\x03\x03\x02\x03\x01\x00\x1b\x00\x03\x02\x00\x02JJ\x00\x01\x00\x00\x15\x00\xf7\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00
The client consistently sends these bytes, although it this does not look like a legitimate GET request. This can't be decoded by utf-8 or by other encodings including utf-16-le, utf-16-be, unicode-escape, etc.
client source:
var client = new WebSocket('wss://127.0.0.1:8080')
client.onopen = function(e) {
console.log("open");
}
client.onmessage = function(e) {
console.log(e.data)
}
server handshake handler:
def handshake(client, address):
req = client.recv(1024).decode('utf-8')
key = (re.search('Sec-WebSocket-Key:\s+(.*?)[\n\r]+', req).groups()[0].strip())
response_key = b64encode(sha1(key + sockey).digest())
response = '\r\n'.join(websock_ans).format(key=response_key)
client.send(response.encode('utf-8'))
As the client request isn't utf-8 bytes, this gives a decoding error in line 2.
following the websocket protocol (https://datatracker.ietf.org/doc/html/rfc6455), sockey and websock_ans are defined as follows:
sockey = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
websock_ans = {
'HTTP/1.1 101 Switching Protocols',
'Upgrade: websocket',
'Connection: Upgrade',
'Sec-WebSocket-Accept: {key}\r\n\r\n',
}
Does WebSocket compress/encrypt its GET requests? As far as I checked, the documents do not state any compression/encryption algorithms.
Thanks in advance.
Use gzip to convert the bytes into objects.
My domain :: https://example.com
My web socket server code path :: http://live.example.com
My php client path:: http://live.example.com/client-php
My JS client path :: http://live.example.com/client-web
I have my php websocket server running as follows
<?php
namespace App;
use Ratchet\Server\IoServer;
use Ratchet\Http\HttpServer;
use Ratchet\WebSocket\WsServer;
require_once './controllers/SocketController.php';
require './vendor/autoload.php';
// configurations
$server = IoServer::factory(
new HttpServer(
new WsServer(
new SocketController()
)
),
8585 // the port of the web socket // I TIRED 8080,8181 also
);
$server->run();
I have two client, one is php-client , which connects to socket as follows
\Ratchet\Client\connect('ws://127.0.0.1:8585')->then(function($conn) {
$conn->send(
json_encode(array(
"to" => "34366",
"data" => "Hello World",
))
);
$conn->close();
}, function ($e) {
$this->logger->info("Can not connect: {$e->getMessage()}");
});
After above code is run , websocket connection is successful ,i can see new connection logs from my socketcontroller as follows :
New connection! (51) Connection 51 has disconnected
Next I have one javascript web client also that connects to same web socket as follows
var socket = new WebSocket('ws://localhost:8585');
socket.onopen = function (event) {
log.append('Conect to server <br>');
socket.send('{ "connect": "1", "id": "34366" }');
};
But on running the web client console give below error always
index.js:2 WebSocket connection to 'ws://localhost:8585/' failed: Error in connection establishment: net::ERR_CONNECTION_REFUSED
(anonymous) # index.js:2
Do below line have issue ??
new WebSocket('ws://localhost:8585');
I tried giving paths for 127.0.0.1, localhost, domain , socketserver path also , but same errors always.
Please help!!
About 4 hours of research...here we go.
I have a C# program that sends and listens for anything coming in a specific Socket. Using the sockets, C# can send stuff to it and can receive from it just fine. Now, going to my JavaScript file, I'm using the WebSocket interface to communicate with C#, but doesn't work (usually times out after a couple of minutes). When the Socket is online, the JavaScript code will take up to about 4 minutes then throw an error saying "WebSocket opening handshake timed out". The thing is I know that it can find because, when the port of the ip doesn't exist the JavaScript file throws an error in the next couple seconds.
Things I've done:
Turn off all firewalls, use both ws and wss at the beginning of the ip and port (ex: wss://xxx.xxx.x.xx:11111), change the port, change the ip to a valid ip still reachable, research for 4 hours.
C#:
IPHostEntry ipHost = Dns.GetHostEntry(Dns.GetHostName());
IPAddress ipAddr = IPAddress.Parse("ip");
IPEndPoint localEndPoint = new IPEndPoint(ipAddr, 11111);
Socket listener = new Socket(ipAddr.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
try
{
listener.Bind(localEndPoint);
listener.Listen(10);
while (true)
{
Console.WriteLine("Waiting connection...");
Socket clientSocket = listener.Accept();
byte[] bytes = new Byte[1024];
string data = null;
while (true)
{
int numByte = clientSocket.Receive(bytes);
data += Encoding.ASCII.GetString(bytes, 0, numByte);
if (data.IndexOf("<EOF>") > -1)
{
break;
}
}
Console.WriteLine("Text received -> {0} ", data);
byte[] message = Encoding.ASCII.GetBytes("Test Server");
clientSocket.Send(message);
clientSocket.Shutdown(SocketShutdown.Both);
clientSocket.Close();
}
}
catch (Exception e)
{
Console.WriteLine(e.ToString());
}
JavaScript:
socket = new WebSocket("wss://ip:11111");
socket.onopen = function()
{
alert("Connected!");
}
socket.onerror = function()
{
alert("Connection Failed");
}
The ip is local
Long story short, C# can communicate with itself and JavaScript can find it but can't communicate with it.
Properly complete a handshake. (Or use a library / connection type that does.)
The WebSocket protocol (as original defined in RFC6455 - The WebSocket Protocol) does not open a plain unrestricted socket, in part for security reasons.
Since the handshake is not complete, the client WS request will timeout as the HTTP “Upgrade” response is never received. Until the handshake is complete, the WS will not be active over the underlying TCP connection.
Initiating a WebSocket connection (“the handshake”) is defined in section 4 of the RFC. It is also discussed in How JavaScript works: Deep dive into WebSockets and HTTP/2 with SSE + how to pick the right path.
The client establishes a WebSocket connection through a process known as the WebSocket handshake. This process starts with the client sending a regular HTTP request to the server. An Upgrade header is included in this request which informs the server that the client wishes to establish a WebSocket connection.
..
Now that [after] the handshake is complete the initial HTTP connection is replaced by a WebSocket connection that uses the same underlying TCP/IP connection. At this point, either party can start sending data.
I am using node-jet library as message broker using a websocket.
In my code, there is a deamon and there are peers connect to it. In libary documentation its says peers can connect either by websocket or trivial tcp connection (never used second one before)
Here is server code I try to connect (its running when I try to connect)
https://github.com/lipp/node-jet/blob/master/examples/todo/todo-server.js
Everything works fine if I run my peer javascript inside a browser however, I am not able to run it from console.
var peer3 = new jet.Peer({
url: 'wss://217.78.109.178:8090'
//url: (window.location.protocol === 'http:' ? 'ws://' : 'wss://') +
window.location.host
})
documentation says it will use trivial tcp if no url provided so I also tried this. Again works in browser but not standalone. Any idea ? how can I solve this problem ?
var peer3 = new jet.Peer({
})
$ node Peer.js
Peer: connect failed { no remote stack
name: 'jet.ConnectionClosed',
message: '',
url: 'https://github.com/lipp/node-
jet/blob/master/doc/peer.markdown#jetconnectionclosed'
}
I'm trying to use a Socket connection to read a file on a remote website. So far, my code:
conn = new Socket;
if( conn.open( 'example.com:80' ) ) {
conn.write( 'GET /indesign-page/ HTTP/1.0' + "\n\n" );
reply = conn.read(999999);
conn.close();
} else {
alert( 'Problem connecting to server' );
}
The socket connects to example.com fine, but the request comes across as this:
GET http://localhost/indesign-page/ HTTP/1.0
when it should be this:
GET http://example.com/indesign-page/ HTTP/1.0
I've tried changing the conn.write parameters to 'GET http://example.com/indesign-page/ ...', but then it comes across as:
GET http://localhosthttp://example.com/indesign-page/ HTTP/1.0
The webserver requires that the host be set correctly to serve correctly.
You need to set the "Host" header.
conn.write( 'GET /indesign-page/ HTTP/1.0' + "Host: example.com\r\n" + "\n\n" );
Because conn.open( 'example.com:80' ) means find example.com's server ip then connect that ip address at 80 port, so the web server does not know that you had resolved example.com before connected to it.
Do you need to use a manual socket object? On Adobe's Community Site there's a mention to this already created FTP Script where you could call a GET or PUT to a file on a FTP server.
Otherwise which OS are you using? If you'll always be on a Mac, you could shell out to an AppleScript command and place the file anywhere you'd like:
var command = 'do shell script "curl http://localhost/indesign-page"';
var response = app.doScript(command, ScriptLanguage.APPLESCRIPT_LANGUAGE);
The nice thing about the AppleScript is that you can execute the command manually using the AppleScript Editor (or Script Editor if you're earlier than 10.6).