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QUESTION
I have a C# Winform application trying to launch a node server.
However the code for this is written in a different cs file, Class1.cs rather than in Form.cs itself. I need to keep this separated in different files. Below is my Class1.cs file:
...ANSWER
Answered 2021-Jun-12 at 20:11You should not mix direct member initialisation and constructor logic. This makes it hard to understand the code flow.
This line declares a variable and initializes it:
QUESTION
I've looked but haven't been able to find a solution to this specific problem, so I thought I'd ask. I'm a novice javascript developer who clearly needs to read more about scope, callbacks and promises.
I'm trying to nest callbacks to get data out of a http request using the fetch API in javascript. At this point in my project, I've sent data to a node back end, called a few apis, then sent json data back to the client.
I now want to access that data outside of the function getServerData
in the below.
I've tried a few different things but haven't been able to figure it out. I feel like I'm missing something obvious.
My current code is below:
...ANSWER
Answered 2021-May-21 at 06:14You don't nest callbacks when using await
. The whole point of await
is to get rid of the .then( .then( .then()))
callback hell and nesting. Either use .then()
(if you enjoy callback hells :) or await
; not both together, it doesn't make sense.
QUESTION
Is there a way where I can save a timestamp out of my application / object, so when I restart the nodeserver I can get that value?
I need this for my cronjob. I need to save the last synching even though I restart the server.
...ANSWER
Answered 2021-May-14 at 13:01There are all sorts of ways to save this sort of information so you can load it when you restart your node process. One is to write it to a file in your file system, then read it when you start your program.
To write the current timestamp to a file do this.
QUESTION
When building an image that needs to be compiled from typescript, I get this error.
sh: 1: tsc: not found
The command '/bin/sh -c npm run tsc' returned a non-zero code: 127
Here is the relevant code:
docker-compose.yaml
...ANSWER
Answered 2021-Apr-22 at 21:38Use npm ci
(or add package-lock.json
to your .dockerignore
file, or delete package-lock.json
in your local environment before building). The why is answered here.
EDIT:
Here's what I believe is going on. Disclaimer, I'm not an expert on nodejs
or npm
-- in fact I'm something of a novice. And all of this is conjecture based on some experiments.
npm
is not linking the binaries for the dev dependencies via sym links in node_modules/.bin
because the package-lock.json
file has gotten into a corrupted state where the (prod) dependencies are in lockfileVersion 2 format, and the dev dependencies are still in lockfileVersion 1 format.
Note: Making a bunch of assumptions here.
Your local host using using npm 6, and the docker container is using npm 7. Because of this, the existing
package-lock.json
is inlockfileVersion: 1
which doesn't include abin
section for dependencies that have binaries. Version 2 does save thebin:
section, whichnpm
must use to determine what binaries to install/link.When you run the production dependency install (e.g.
NODE_ENV=production npm install
), usingnpm
version 7,npm
is upgrading the version of yourpackage-lock.json
tolockfileVersion: 2
, part of this includes savingbin:
sections for the dependencies that install binaries. Importantly, it updates only the production dependencies. Now thepackage-lock.json
file is corrupted because it claims to be in version 2 format, but all the dev dependencies are either still in version 1 or at least don't have thebin:
section correctly applied.When you now try to install your dev dependencies,
npm
sees that thepackage-lock.json
is inlockfileVersion: 2
, so it assumes that the dev dependencies have been upgraded as well (but they haven't been, or at least not correctly). It doesn't find thebin:
sections because they don't exist and so it doesn't link the binaries to thenode_modules/.bin/
directory.
You can perform a minimum reproduction of it using this Dockerfile
:
QUESTION
So I have a Nodejs app with a Github action pipeline to a private Dockerhub repo which creates an image once a push is made to main
branch using below Dockerfile
within the app directory
ANSWER
Answered 2021-Mar-23 at 11:32The build error indicates you don't have the app
directory next to the compose file. Since you already have a ci process to build the image I'd suggest using the built image by specifying image: docker-username/docker-image
as the image for the nodeserver service in your compose file. You will need to log in with an account that can access the private image on your server (just run docker login
and put in your credentials).
This is how your compose file would look like with the image specified instead of building it:
QUESTION
im very new to nodejs so bare with me
so i have a nodejs server which i use to inject live data to my php/laravel website via socket.io i run my nodejs server in port 3002 and apache is using port 80
so my node server is running on
so i noticed clients who use vpn or proxy cant connect to my nodeserver address and websocket connection fails for them
after asking in this question it was suggested its bcuz vpn is fire walling unusual ports
nodejs server doesn't respond when clients use vpn or proxy
so i maped a address to 3002 port , so basically
http://example.com/server ---proxying---> http://78.47.222.225:3002
so now when i go to http://example.com/server
i get
ANSWER
Answered 2020-Oct-21 at 10:25Your proxy setting indicates a VHost on port 443, which is default port for SSL.
But your requests with bia2roll.com
are unsecure (http:// or ws://).
Secure your server by adding SSL (Let's encrypt) and call it with https or wss or Unsecure your server by binding on the port 80
QUESTION
I have the following express / node application:
...ANSWER
Answered 2020-Aug-19 at 19:30The best approach would be using ecosystem.config.js
.
Put this file in your project's root dir:
QUESTION
Final Goal: create a simple NodeJs to provide a Firestore Custom Token.
Current tentative: I am trying exactly this approach Custom Token Stackoverflow question. According to this question Author he is able to get the Custom Token. Unfortunatelly I keep getting
...ANSWER
Answered 2020-Apr-21 at 16:10If you have syntax problems like this, the docs are your friend. From the reference documentation for Auth.createCustomToken
:
createCustomToken(uid: string, developerClaims?: Object): Promise
...
Parameters
uid: string
The uid to use as the custom token's subject.Optional
developerClaims: Object
Optional additional claims to include in the custom token's payload.
So the second argument to createCustomToken
needs to be an object with the custom claims you want to add. My guess is that the boolean in the question you linked was a valid call in an older version of the SDK.
QUESTION
I'm trying to install Openshift Origin with Ansible. I got an issue when execute deploy_cluster.yml and the error is :
...ANSWER
Answered 2020-Feb-18 at 07:44Solved ! Move my environment to higher specifications. I saw some logs show that the resources I use before 1vcpu and RAM 2GB (Master + Infra1, Compute 1) => Recording NodeHasSufficientResources in /var/log/messages
.
Currently, I use 2vcpu and RAM 8GB (Master + Infra 1, Compute 1) and works well !
QUESTION
My project is posted on Github. Before running the app, you need to start a server by going to the directory VideoTutorialsWithServerApp/nodeServer
and running node server.js
from the command line.
I have a feature where comments can be added to the videos on the app by entering a name and comment into the spot that says Leave a comment
. The comments appears after clicking back and visiting the video again. It appears the table view can only be the size of max three comments however. In the picture below, there should be 4 comments but there are only 3. I've tested this and the max is always 3 comments for any video.
You can view the comments that should be displayed for table 1 by visiting 'http://localhost:6060/comments/1'
...ANSWER
Answered 2019-Oct-11 at 11:51You need to use intrinsicContentSize
variable of a UITableView.
intrinsicContentSize will give us table height.
Create a subclass for child tableView and override intrinsicContentSize.
Dynamic row heights of a UITableView inside a UITableViewCell
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