How can I make this request in nodejs(status 415)? - node.js

Question

I was using bash to do a task. And had some mess while trying to parse the response. Now I am using nodejs for the task. But I get following error:
"httpStatus" : 415,
"messages" : [ {
"errorCode" : "305",
"message" : "Unsupported media type 'application/x-www-form-urlencoded'"
} ]
This used to be my curl request in bash file:
curl --include\
--request POST \
--user "$USERNAME:$PASSWORD" \
--header "Content-Type: application/vnd.profitbricks.resource+json" \
--data-binary "{
\"properties\": {
\"name\": \"$servername\",
\"ram\": $RAM,
\"cores\": $CORES
}
}" \
https://api.profitbricks.com/rest/datacenters/$ID/servers ;
This is my current request:
var request = require('request');
var reqoptions = {
method: 'POST',
uri: 'https://api.profitbricks.com/rest/datacenters/'+options.vdcID+'/servers',
form:{
"properties":{
"cores": options.cores,
"ram": options.ramsize,
"name": options.servername
}
},
headers: {
'Authorization': 'Basic ' + new Buffer(options.user+':'+options.password).toString('base64'),
'Content-Type': 'application/vnd.profitbricks.resource+json'
}
};
request(reqoptions, function(err, res, body){});

Answer 1

form option changing content-type to form-urlencoded
you shouldn't use form in request options
send a binary data like here nodejs/express and binary data in POST
so use body: myBuffer instead of form: {...}

Answer 2

The problem was serialization. I stringified the object. Now it works.
var request = require('request');
var body = {
"properties":{
"cores": options.cores,
"ram": options.ramsize,
"name": options.servername
}
}
var reqoptions = {
method: 'POST',
uri: 'https://api.profitbricks.com/rest/datacenters/'+options.vdcID+'/servers',
body: JSON.stringify(body),
headers: {
'Authorization': 'Basic ' + new Buffer(options.user+':'+options.password).toString('base64'),
'Content-Type': 'application/vnd.profitbricks.resource+json'
}
};
request(reqoptions, function(err, res, body){});
This did the trick.