node.js - Correspondence between curl command and node's request -

how can execute curl shell command curl --data "{\"obj\" : \"1234556\"}" --digest "https://username:password@www.someurl.com/rest-api/v0/objectpost" correctly returns expected values using node's request package? tried post options got no success:

var request = require('request'); var body = {"obj" : "1234556"}; var post_options = {     url: url,     method: 'post',     auth: {         'user': 'username',         'pass': 'password',         'sendimmediately': false     },     headers: {         'content-type': 'text/json',         'content-length': json.stringify(body).length,         'accept': "text/json",         'cache-control': "no-cache",         'pragma': "no-cache"     },     timeout: 4500000,     body: json.stringify(body) } request(post_options, callback); 

this way body not parsed (got missing required parameter: "obj"), , can't understand if it's matter of encoding or passing in wrong place (i.e. should not body). suggestion?

by default, curl send content-type: application/x-www-form-urlencoded unless use -f (which changes content-type: multipart/form-data) fields or explicitly override header (e.g. -h 'content-type: application/json'). however, data being sent curl example seems json. server confused , won't correctly find data it's expecting.

so solution 1 of 2 options:

1. try application/json content-type in code instead of text/json.

2. actually use urlencoded formatted data instead of json using form property. request take form object , conversions , setting of headers, etc. you. example:

   var post_options = {   url: url,   method: 'post',   auth: {     user: 'username',     pass: 'password',     sendimmediately: false   },   timeout: 4500000,   form: body };