如何在没有库的情况下使用来自 node.js 的 websocket 正确发送二进制消息？

Question

The fact is that I'm trying to implement the dependency free websocket server, I found a couple of articles on this topic in English. and Russian, but in both articles only processing of "short" text messages is considered, unfortunately nothing is said about binary ones. And at the moment, apparently, I do not have enough qualifications to understand how to send binary messages (with text messages everything is ok, thanks to the articles I can both receive and send them without any problems). In this connection, I ask for help here. If any of you can provide an example of how binary messages are sent, I would really appreciate it. Please do not post links to existing libraries implementing ws in node.js, I tried looking at their source.

Answer 1

const secondByte = buffer.readUInt8(1); const isMasked = Boolean((secondByte >>> 7) & 0×1);

One of the articles explaining how to work with this has an example above Can someone suggest, when the author of the article calculates whether the buffer is masked, it compares with the text opcode, right?