Two node.exe processes hang when jsreport service is stopped

  • Hi,

    Currently, we are running jsreport on our servers as a service. When we start jsreport server, we don't see any error, however, in the backend, it continuously spits out errors saying "Port is already in use" which increases CPU utilization rate close to 100%. When we stop service, it fails to stop all node.exe processes. Two node.exe processes hang in the backend and we get Access denied error when we try to stop the processes.

    Can someone please help us figure out why the action of stopping jsreport service causes processes to hang on the port?


  • Can you share the logs?
    How do you start and install the service?
    Do you use command jsreport win-install as administrator ?
    Is the port actually free? Does the user running the service have permission to open that port?

  • Hi Jan-
    We are using jsreport version 1.4.0. We installed jsreport using command "node server.js install" from jsreport folder. "jsreport win-install" is not working with version 1.4.0

    We have checked, the port is dedicated to jsreport processes only. The weird part is that whenever we stop jsreport-server service, it kills the processes and immediately starts two node processes on the same port. We have checked, user have all the permissions to open that port

    I tried uninstalling and installing the service again. When i install it, I see following error


    C:..\jsreport>node server --install
    Platform is win32
    installing windows service jsreport-server.
    2018-08-24T12:24:47.040Z - info: Initializing jsreport@1.4.0 in development mode
    using configuration file dev.config.json
    2018-08-24T12:24:47.055Z - info: Searching for available extensions in C:..\jsreport
    2018-08-24T12:24:47.055Z - info: Extensions location cache contains up to date i
    nformation, skipping crawling in C:..\jsreport\node_mo
    2018-08-24T12:24:48.974Z - info: Found 29 extensions
    starting windows service jsreport-server.
    2018-08-24T12:24:49.021Z - debug: Writing extension locations cache to C:..\Temp\jsreport-temp\extensions\locations.json
    2018-08-24T12:24:49.021Z - debug: Discovered 29 extensions
    2018-08-24T12:24:49.021Z - info: Using extension import-export
    2018-08-24T12:24:49.879Z - info: Using extension ejs
    2018-08-24T12:24:49.879Z - debug: Extension authentication is disabled, skipping

    2018-08-24T12:24:49.879Z - info: Using extension templates
    2018-08-24T12:24:49.895Z - info: Using extension tags
    2018-08-24T12:24:49.910Z - info: Using extension jsrender
    2018-08-24T12:24:49.910Z - info: Using extension handlebars
    2018-08-24T12:24:49.910Z - info: Using extension debug
    2018-08-24T12:24:49.910Z - info: Using extension express
    2018-08-24T12:24:50.160Z - info: Using extension fop-pdf
    2018-08-24T12:24:50.175Z - info: Using extension reports
    2018-08-24T12:24:50.191Z - info: Using extension fs-store
    2018-08-24T12:24:50.721Z - info: Using extension html-to-xlsx
    2018-08-24T12:24:50.909Z - info: Using extension images
    2018-08-24T12:24:50.940Z - info: Using extension text
    2018-08-24T12:24:50.955Z - info: Using extension child-templates
    2018-08-24T12:24:50.971Z - info: Using extension licensing
    2018-08-24T12:24:51.252Z - info: Using extension phantom-pdf
    2018-08-24T12:24:51.314Z - info: Using extension authorization
    2018-08-24T12:24:51.330Z - debug: Extension authorization was disabled
    2018-08-24T12:24:51.330Z - info: Using extension data
    2018-08-24T12:24:51.330Z - info: Using extension resources
    2018-08-24T12:24:51.345Z - info: Using extension browser-client
    2018-08-24T12:24:51.345Z - debug: Extension studio is disabled, skipping
    2018-08-24T12:24:51.345Z - info: Using extension scripts
    2018-08-24T12:24:51.345Z - info: Using extension scheduling
    2018-08-24T12:24:51.392Z - info: Using extension assets
    2018-08-24T12:24:51.408Z - info: Using extension xlsx
    2018-08-24T12:24:51.439Z - error: Error when loading extension SyntaxError: C:..\jsreport\node_modules\jsreport\node_modules\file-type
    module.exports = input => {
    Unexpected token =>
    module.exports = input => {
    SyntaxError: Unexpected token =>
    at exports.runInThisContext (vm.js:73:16)
    at Module._compile (module.js:443:25)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (C:..\jsreport\node_modules
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (C:..\jsreport\node_modules
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    at Object.<anonymous> (C:...\node_modules
    at Module._compile (module.js:460:26)
    at Object.Module._extensions..js (module.js:478:10)
    at Module.load (module.js:355:32)
    at Function.Module._load (module.js:310:12)
    at Module.require (module.js:365:17)
    at require (module.js:384:17)
    2018-08-24T12:24:51.439Z - info: Using extension sample-template
    2018-08-24T12:24:51.439Z - info: Using extension public-templates
    2018-08-24T12:24:51.470Z - debug: Extension public-templates was disabled
    2018-08-24T12:24:51.470Z - info: Initializing fs storage at C:..\jsreport\data
    service jsreport-server is running. go to http://localhost:[port_number]


  • Here is the error we see when restarting service

    2018-08-16T23:52:13.186Z - error: Error when starting http server on port ..
    Error: listen EADDRINUSE :::[port_number]
    at Object.exports._errnoException (util.js:1022:11)
    at exports._exceptionWithHostPort (util.js:1045:20)
    at Server._listen2 (net.js:1259:14)
    at listen (net.js:1295:10)
    at Server.listen (net.js:1391:5)

  • The first error complains old node.js. Is it possible for you to update node.js to the 8.x?
    It seems that a dependency somewhere deep down requires it.

  • Our reporting services depend on jsreport. If we update the version, is it going to impact the existing templates or functionality?

  • It should work the same with the node 8.x as with the older node.
    However your jsreport version is quite old so not 100% sure.
    The best would be to try it out on your test environment.

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