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roboticus explained it from the implementation side, but you can also look to the specification:

A frame has an associated type. Each frame belonging to the same message contains the same type of data. Broadly speaking, there are types for textual data (which is interpreted as UTF-8 [RFC3629] text), binary data (whose interpretation is left up to the application), and control frames ...

So Net::WebSocket::Server allows you to specify handlers for the two kinds of data frames.

Update:

since whatever I send() to the server, it is always received as utf8, even if I declare type='binary' in the JavaScript socket declaration.

That would be a JS issue; you haven't shown your JS code and I don't see this "type='binary'" in the WebSocket API. This works fine for me:

var socket = new WebSocket("ws://localhost:8080"); socket.send("Hello"); // sent as text (UTF-8) socket.send( new Blob(["World"]) ); // sent as binary

In reply to Re: Net Websocket Server (updated) by haukex
in thread Net Websocket Server by alvise

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