js websocket binary

WebSockets are a communication protocol that allows two-way communication between a client and a server over a single, long-lived connection. While WebSockets are typically used for text-based communication, they can also be used to send binary data.

To send binary data over a WebSocket, you first need to convert the data to a binary format. This can be done using the ArrayBuffer or Blob APIs in JavaScript. Once you have the binary data, you can send it over the WebSocket using the send() method.

Here's an example of sending binary data over a WebSocket using the ArrayBuffer API:

// create a WebSocket connection
const ws = new WebSocket('wss://example.com');

// create binary data
const buffer = new ArrayBuffer(4);
const view = new DataView(buffer);
view.setUint32(0, 1234);

// send binary data over WebSocket
ws.send(buffer);

In this example, we create a new WebSocket connection to "wss://example.com". We then create a new ArrayBuffer with a length of 4 bytes and set the value to 1234 using the DataView API. Finally, we send the binary data over the WebSocket using the send() method.

Note that you can also use the Blob API to send binary data over a WebSocket. The process is similar to using the ArrayBuffer API, but instead of creating an ArrayBuffer, you create a Blob object and pass it to the send() method.

// create a WebSocket connection
const ws = new WebSocket('wss://example.com');

// create binary data
const blob = new Blob(['Hello, world!'], { type: 'text/plain' });

// send binary data over WebSocket
ws.send(blob);

In this example, we create a new WebSocket connection to "wss://example.com". We then create a new Blob object with the text "Hello, world!" and a MIME type of "text/plain". Finally, we send the binary data over the WebSocket using the send() method.