node-ipc | nodejs module for local and remote Inter Process | TCP library
kandi X-RAY | node-ipc Summary
kandi X-RAY | node-ipc Summary
node-ipc
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Top functions reviewed by kandi - BETA
- Start a server
- Serves the network .
- Tries to connect to a network
- Create a new socket handler .
- Connect to a provided socket connection .
- Receive data from socket
- enable the sort event
- Emit an event to a socket .
- Starts the TLS server
- Sort the table by index .
node-ipc Key Features
node-ipc Examples and Code Snippets
Community Discussions
Trending Discussions on node-ipc
QUESTION
I've been using VS coed for some years now and I loved the experience so far, but one of my most recent projects is suddenly slowdowns the VS code drastically, I couldn't figure out why yet. And amazingly other projects do not give me this headache at the moment, with VS code. So I suspect there's something with the particular project I was mentioned before giving me the trouble. I tried deleting the repo and cloning it again in a new place, uninstalled and installed VS code again, but still no luck. It's really laggy, It takes upto a minute or so to update something I wrote in the editor.
Here's the status report of VS code when the problem occurs
...ANSWER
Answered 2021-Dec-15 at 17:55I have the exact same issue with VSCode and decided to download the latest version of VSCode Insiders (https://code.visualstudio.com/insiders/). They seem to have fixed this issue as the problem is not showing up anymore on any of the affected projects.
You can also sync your VSCode settings with VSCode Insiders (https://code.visualstudio.com/docs/editor/settings-sync) so you can continue to work normally until this issue is fixed in regular VSCode.
QUESTION
I've been following along with this article, trying to create my first Flask API from scratch. I had to update my computer in the middle of my work and I don't think I successfully closed the terminal beforehand.
When I try to run my application now from the home directory of my project, in the section titled "Creating a RESTful Endpoint with Flask", I get a long stack trace ending with this:
...ANSWER
Answered 2021-Dec-08 at 04:42You can use lsof to list the processes, their PIDs and the TCP ports they are listening on with a command like this:
QUESTION
I'm using Visual Studio Code (VSCode) for a bigger project where we have around 10 to 15 sub git projects in one workspace.
All these projects are Typescript so I use tasks.json
+ vscode Option Tasks: Manage Automatic Tasks in Folder
.
This leads to 10-15 nodes processes with each using around 1-4% CPU usage. Unfortunately I have multiple work spaces open so I end up having a lot of node processes not just only consuming my memory also my cpu.
...ANSWER
Answered 2020-Aug-25 at 15:36I found a solution on accident because I tried to reduce the amount of tasks but what about reducing the impact of each task?
Solution
Set the environment variable
QUESTION
I'm using node-ipc to transfer some mongoose documents across child processes, however, Mongoose functions no longer work with these documents since stringify is called and they are no longer valid mongoose documents.
What is the best way to make this work? Is there a way to convert them back to Mongoose docs when they are received by child processes?
...ANSWER
Answered 2020-Aug-20 at 15:27Mongoose provides the .hydrate()
function that allows you to create a mongoose document from plain json objects (that already exist in the DB). So you should be able to do:
QUESTION
I'm new to working with sockets and have a small system design question:
I have 2 separate node processes for a web app, 1 is a simulator that is constantly running and the 2nd is an api server. Both share the same MongoDB database and we have a React app running for the client, served by the api server.
I'm looking to implement socket.io for real-time notifications and so I've set up a simple connection between the api and client.
My problem is that while the simulator runs, there are some events that I also want to trigger push notifications for so my question is how to hook that into everything?
The file hierarchy is like:
...ANSWER
Answered 2020-Jul-12 at 04:11Leave hierarchy as it is and install socket.io package inside simulator as well. I'm not sure if sockets work this way but can both simulator and api connect to the same socket?
The client would have to create a separate socket.io connection to the simulator process. Then, the client can receive data from the API server over one connection and from the simulator over another connection. You would need two separate, independent socket.io connections from the client, one to the API server and one to the simulator. Simulator and API server cannot share the same socket unless they are in the same process.
Move simulator file into api file to fork as a child process so that the 2 processes can communicate via child/parent messaging. simulator will message api which will then emit updates through the socket to client
This is really part of a broader option that the simulator communicates with the API server and sends it data that the API server can then send to the client over the single socket.io connection that the client made to the API server.
There are lots of different ways for the simulator process to communicate with the API server.
Since it's already an API server, you can just make an API for this (probably non-public). The simulator calls an API to send data to the client. The API server receives that data and sends it to the client.
As you suggest, if the simulator is run from the API server as a child process, then you can use parent/child communication messaging built into node.js. Note, you don't have to move the simulator files into the API file at all. You can just use child_process to launch the simulator as another nodejs app from another project. You just have to know the path to that other project.
You can use any another communication mechanism you want between the simulator process and the API server process. There could be a socket.io connection between them. You could use several forms of IPC, etc...
If 1 is possible, that seems like the best solution in my impression.
Your #1 option is not possible as separate processes can't use the same socket.io connection.
It seems like extra work to add an additional layer of messaging for 2 and 3.
My options #1 and #2 are not much code in each server. You're doing interprocess communication. You should expect to use some code to enable that. But, it's not hard at all.
If the lifetime of the simulator server and the API server are always together (they have no independent uses), then I'd probably do the child process thing where the API server launches the simulator and then use parent/child messaging to communicate between them. You do NOT have to combine sources to do this. The child_process module can run the simulator process by just knowing what directory it is located in.
Otherwise, I'd probably make a small web server on a non-public port in the API server and have the simulator just send data to that other web server. I often refer to this as a control port. It's a way of "controlling or diagnosing" the API server internals and can only be accessed from within the private network and/or with credentials. The reason I'd use a separate web server (in the same nodejs app as the API server) is to make it easy to secure so it can't be accessed from the outside world like the regular public APIs can. You just put the internal web server on a port that is not exposed to the outside world.
QUESTION
I am using the Vue cli to create a vue app with Firebase as my backend.
A file within my app initializes the Firebase DB by referring to environment variables that are defined in .env
files.
.env
ANSWER
Answered 2020-Feb-23 at 16:31You need to prefix your variables with VUE_APP_
in your .env
files.
From https://cli.vuejs.org/guide/mode-and-env.html#environment-variables:
Note that only variables that start with
VUE_APP_
will be statically embedded into the client bundle withwebpack.DefinePlugin
.
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