Rust

Duplicate Python websockets

See more WebSocket Examples

Demonstrates how to duplicate the following Python client-side websocket snippet:

async with websockets.connect('ws://192.168.1.35/websocket') as websocket:
await websocket.send("http.controller_login:username=xxx&password=xxxxx")
response = await websocket.recv()

Rust

// This example requires the Chilkat API to have been previously unlocked.
// See Global Unlock Sample for sample code.

// In Python, the following line of code does more than just connect:
// 
//      websockets.connect('ws://192.168.1.35/websocket')
// 
// It is connecting to 192.168.1.35 without using TLS.  If the URI starts with "wss://", then TLS should be used.
// But this URI begins with just "ws:/", so no TLS.

// Also, after connecting, a GET request is sent to the /websocket endpoint.
// In summary, the websockets.connect function is establishing the connection and it sends a GET request.

// First establish the connection.
// No TLS, use the default HTTP port 80.
let rest = chilkat::Rest::new();
if rest.connect("192.168.1.35", 80, false, false).is_err() {
    println!("{}", rest.last_error_text());
    return;
}

let ws = chilkat::WebSocket::new();

// Tell the WebSocket to use this connection.
if ws.use_connection(&rest).is_err() {
    println!("{}", ws.last_error_text());
    return;
}

// Add the standard WebSocket open handshake headers that will be needed.
// (This adds the required HTTP request headers to the rest object.)
let _ = ws.add_client_headers();

// Now send the GET request to /websockets.
let Ok(response_body) = rest.full_request_no_body("GET", "/websockets") else {
    println!("{}", rest.last_error_text());
    return;
};

// If successful, the HTTP response status code should be 101,
// and the response body will be empty. (If it failed, we'll have a look
// at the response body..)
let status_code = rest.response_status_code();
println!("Response status code: {}", status_code);

if status_code != 101 {
    println!("{}", response_body);
    println!("-- Failed because of unexpected response status code.");
    return;
}

// We have the expected 101 response, so let's now validate the 
// contents of the response.
if ws.validate_server_handshake().is_err() {
    println!("{}", ws.last_error_text());
    return;
}

println!("WebSocket connection successful.");

// The application may now begin sending and receiving frames on the WebSocket connection.

// The 1st frame sent by the Python snippet is:
// 
//     websocket.send("http.controller_login:username=xxx&password=xxxxx")
// 

// Send the same using Chilkat, and get the response.
let final_frame = true;
if ws.send_frame("http.controller_login:username=xxx&password=xxxxx", final_frame).is_err() {
    println!("{}", ws.last_error_text());
    return;
}

// Read an incoming frame.
if ws.read_frame().is_err() {
    println!("Failed to receive a frame");
    println!("ReadFrame fail reason = {}", ws.read_frame_fail_reason());
    println!("{}", ws.last_error_text());
    return;
}

// Show the string that was received.
let received_str = ws.get_frame_data().unwrap_or_default();
println!("Received: {}", received_str);

// Continue with whatever additional communications are desired...
// ....
//