client.send(data, { binary: isBinary })

这是一个用于在客户端发送数据的函数。它接受两个参数：要发送的数据和一个选项对象。
第一个参数是要发送的数据，可以是字符串或二进制数据。如果是字符串，那么选项对象中的isBinary属性应该为false，如果是二进制数据，则应该为true。
第二个参数是一个选项对象，它可以包含以下属性：

binary：一个布尔值，指示要发送的数据是否是二进制数据。
mask：一个布尔值，指示是否要对数据进行掩码处理，以防止恶意攻击。
compress：一个布尔值，指示是否要压缩数据。
fin：一个布尔值，指示是否是消息的最后一帧。

例如，如果要发送一个字符串数据，可以这样调用该函数：
client.send('Hello, world!', { binary: false });
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如果要发送一个二进制数据，可以这样调用该函数：
const data = new Uint8Array([1, 2, 3]);
client.send(data, { binary: true });
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相关问题

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);
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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);
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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.