javascript - How to find the source of a connect ECONNREFUSED error in node.js? -

i've inherited nodejs application reasonable complexity. interacts 5 other applications through various network interfaces, http rest apis. every , run issue error thrown, , while handled prevent application crashing, can't tell error coming from. here's typical amount of information error:

• connect econnrefused
• util.js:l746
• net.js:1000

and that's it. that's entire message , stacktrace (message duplicated in errno=econnrefused , syscall=connect, not helping). i'm using nodejs 0.12.2 , linked stacktrace lines source accordingly. i've read source didn't anywhere.

i've looked through many questions here on related econnrefused, come code example. if knew part of applicatino response network request, fix it.

so question is, how can instrument node application find out failed requests come from?

ps: i've looked @ the recommendations debugging nodejs applications, didn't find answering question.

the error caused tcp connection coming kernel refused host - need error handling , retry attempts avoid problems. try curling url make sure it's not wrong machine.

you can use domain module encapsulate code , make sure preserve context in error took place. in addition, should make named functions callbacks , because @ least point in right direction.

there libraries out there can attempt retry http requests , if that's need.