I am new to web application development and now want to implement an function. Let me describe it:
There is a remote machine or server, I can telnet or ssh to it and run some commands on the server using tools such as Putty or terminal. Now, I want to build a dialog box or input box in my web application, and users can use this box to ssh or telnet to the machine and run commands.
Any comments about this idea? Thanks so much.
Related
I have developed an Excel Javascript Add-in on my machine using the yeoman generator. The add-in itself works fine when I start it up on my client with npm start. I can use the add-in on any port I want provided I change all the ports in the config files etc. However, we now want to delpoy this add-in on our local server to make it available to several users.
I have noticed that every time I change the location of the project e.g. from my machine to the server the application will start up but Excel will give me the error message "ADD-IN ERROR Sorry, we can't load the add-in. Please make sure you have network and/or Internet connectivity. Click "Retry" once you are back online". My work around for now is to create a new app on the server and copy the html, js and css file to the taskpane folder. When I now start up the new app it'll work fine.
For the second issue I haven't found a solution/understood the behaviour. When I create an app with the yeoman generator on our server (MS server 2019) and start it up it can be reached via e.g. localhost:3000 on the server but not via :3000 or :3000. It runs fine when I access it from the server itself.
I have opened the inbound and outbound port 3000 on the server to allow https communication. In a next step I added the manifest to the windows 365 admin console and added myself as user. When I open Excel from my machine (client side) the excel add-in will be available in the insert ribbon but won't load and I get the same error message as described above "ADD-IN ERROR Sorry, we can't load the add-in. Please make sure you have network and/or Internet connectivity. Click "Retry" once you are back online"
The following troubleshooting steps have been performed. I checked whether I can reach the add-in url via web browser but the connection timed out. When I check on the server side whether the app is listening I get the below result.
TCP 127.0.0.1:3000 0.0.0.0 Listening 40776
I'm not sure but I think the app should list on e.g. 0.0.0.0:3000 to capture inbound traffic from the client side. Is there a way to change this add-in (app) behaviour on the server when creating/starting up the app with the yeoman generator? I have checked the webpack.config.js file but I couldn't find any way to change that behaviour.
Any idea/help is appreciated.
Thanks!
I believe this is precisely the intended configuration of the yeoman development environment. It spins up the webpack dev (NodeJS) server, which by default only listens to the localhost / loopback address.
From here:
https://webpack.js.org/configuration/dev-server/#devserverhost
It looks like you could hand modify your webpack.config.js file to include a
host: '0.0.0.0' entry under the devServer listing.
The other item you might need to change is
https://webpack.js.org/configuration/dev-server/#devserverallowedhosts
As I believe this defaults to 'auto' which would only allow connections from the local computer.
I am currently working on a server where I want to autorun a file whenever I connect to the server myself. Example; I start the server and when I connect to it I want it to run a backup. My server is running on another computer and I connect to it from my main computer to save performance. The thing is that I also want to be able to work inside the server from my main computer. Example; The server is running on PC1 and I want to have access to the server from PC2 via vagrant.
The server is run by vagrant.
I have some experience within - Ruby, C++, Vagrant, javascript and SQL if this is helpful for the answer.
I found how to connect to the server remotely via the vagrant environment using ssh vagrant#192.168.x.x where the x.x is the ip of the local computer.
Example
IP to the vagrant server is 192.168.192.192
On my main computer I run the command ssh vagrant#192.168.192.192 and I login with the default password.
Using putty able to do an ssh from one machine to another machine and from there another so on.Like a chain process.I want to do the same with java program. so far I am able to connect one machine and able to run scripts.From that machine how to do ssh configuration to connect the subsequent machines.Also I want to execute some commands. using java
I'm building a chat system with websockets but a can't find how to keep runing the file that starts the websocket server. I'm using php, javascript and cpanel. Can anyone help me how to run the websocket server from cpanel and keep it runing like forever.
Thanks
you have to use ssh detail to connect your server from command prompt
ssh username#host-name
My project is a Real Time Two-Player Facebook Game, and what I need is a tool that will help me build the game with quick responses to enable the "Real Time" function of the game. I have just found out about the Node JS and Socket IO. I have some knowledge in JavaScript so I stepped up and watched a few tutorials that discuss the functions of Node JS and Socket IO.
Here's the link to the videos that I have watched:
http://www.youtube.com/watch?v=mSE6xHkcX0w
I understand the basic of the Node JS and Socket IO and successfully installed it in my localhost. The problem is when I uploaded the files from my localhost to my remote server, some functions of the program are not working well. I don't know how to node my JavaScript file when it is on the server, because if it's in my localhost, I am using command prompt to run it.
node app.js
Node is not a web framework.
Chances are, you're using a web host that's generalized for web frameworks like PHP and Ruby on Rails. You're going to need virtual private server hosting, or Node-specific hosting, because Node requires a virtual machine to run. You otherwise won't be able to run Node Package Manager or Node itself.
Joyent has provided a list of hosts here.
If you chose to use a VPS or dedicated machine, an installation guide would be found here. This is how you would install Node on CentOS.
wget http://nodejs.org/dist/v<version>/node-v<version>.tar.gz
tar -zxf node-v<version>.tar.gz
cd node-v<version>
./configure
make -j <number of cores>
make install