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I have an http server and a piece of code that needs to run only when the server is listening. For this, I am binding to the "listening" event like so :
server.on('listening', doSomething)
The thing is that my server might be already listening and then the event "listening" will not be emitted, and my code won't run ... Is there a way to know the status of the server? Something like :
if (server.isListening() === true) doSomething()
else server.on('listening', doSomething)
EDIT I could of course (as suggested in an other similar question) try to connect to that port and see if somebody's listening. But that wouldn't prove that the particular instance I am using is listening. Just that some service is listening there.
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In windows you can simply go to the Task Manager and check for node in the application list. If it is there then it is running in the machine. There is no default page or URL that node server provides from which you can know that node is running on that server by using the Public IP address or domain name.
Node. js has a built-in module called HTTP, which allows Node. js to transfer data over the Hyper Text Transfer Protocol (HTTP). The HTTP module can create an HTTP server that listens to server ports and gives a response back to the client.
createServer() method turns your computer into an HTTP server. The http. createServer() method creates an HTTP Server object. The HTTP Server object can listen to ports on your computer and execute a function, a requestListener, each time a request is made.
Simple
if (server.listening) { # }
https://nodejs.org/api/net.html#net_server_listening
Elaboration
listening attribute indicating whether the
server is listening
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