Subscribe outside MeteorJs

kheireddine · October 8, 2022, 4:12pm

Actually, I m using Websocket library, and i was wondering how can I subscribe in meteorJs’s publications?

Arduino:

@rjdavid @edemaine @mikkelking @waldgeist

raragao · October 9, 2022, 3:20pm

I didn’t test it, but can be a good start:

kheireddine · October 9, 2022, 3:33pm

waldgeist · October 10, 2022, 10:14am

You can find the DDP protocol documentation here:

github.com

meteor/meteor/blob/devel/packages/ddp/DDP.md

# DDP Specification

DDP is a protocol between a client and a server that supports two operations:

 * Remote procedure calls by the client to the server.
 * The client subscribing to a set of documents, and the server keeping the
   client informed about the contents of those documents as they change over
   time.

This document specifies the version "1" of DDP. It's a rough description of
the protocol and not intended to be entirely definitive.

## General Message Structure:

DDP may use either SockJS or WebSockets as a lower-level message transport. (For
now, you connect via SockJS at the URL `/sockjs` and via WebSockets at the URL
`/websocket`. The latter is likely to change to be the main app URL specifying a
WebSocket subprotocol.)

DDP messages are JSON objects, with some fields specified to be EJSON.  Each one

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I used a Unity C# implementation as the basis for my own fork:

It was a bit buggy, so I had to implement a couple of workarounds, but it worked. You can have a look at their implementation to get a feeling what has to be done.

There is also this JavaScript implementation:

The best recommendation I can give to you is: never use this.unblock() in any publication, although it had been recommended by the Meteor team before. This will let your publications run amok, as any change in the subscription parameters will cause all documents to be resent again. I learned this the hard way…

kheireddine · October 10, 2022, 3:17pm

So for example, I want to connect my Arduino to Meteor, how can that work?

kheireddine · October 10, 2022, 10:49pm

I want to just what the query that I need to send to meteor Web-socket to make a connection