debug for the child_process,the error is EADDRINUSE

[4176244]

i use the child_prcess,the document is
https://nodejs.org/api/child_process.html
Example: sending a socket object
it is error when i execute the code,and show "EADDRINUSE";

you can try to do:
the old code:
const normal = require('child_process').fork('child.js', ['normal'] );
const special = require('child_process').fork('child.js', ['special']);

the new code,it is ok:
const normal = require('child_process').fork('child.js', ['normal'], { execArgv: ['--debug=' + (process.debugPort + 1)] });
const special = require('child_process').fork('child.js', ['special'], { execArgv: ['--debug=' + (process.debugPort + 2)] });

[bnoordhuis]

Closing, duplicate of #9435.