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rubycurlnet-http

Error Converting Curl Request to Net::HTTP

I am trying to translate a curl request to ruby. I don't understand why this works:

curl -H "Content-Type: application/json" -X POST -d '{"username":"foo","password":"bar"}' https://xxxxxxxx.ws/authenticate

while this doesn't:

uri = URI('https://xxxxxxxx.ws/authenticate')

https = Net::HTTP.new(uri.host,uri.port)
https.use_ssl = true

req = Net::HTTP::Post.new(uri)
req['Content-Type'] = 'application/json'
req.set_form_data(username: 'foo', password: 'bar')

res = https.request(req)

The response I get is:

(byebug) res
#<Net::HTTPBadRequest 400 Bad Request readbody=true>
(byebug) res.body
"{\"error\":\"username needed\"}"

Is there any way to inspect what happens behind the scenes?

Solution

  • set_form_data will encode the request payload as www-form-encoded. You need to simply assign the body directly.

    uri = URI('https://xxxxxxxx.ws/authenticate')

https = Net::HTTP.new(uri.host,uri.port)
https.use_ssl = true

req = Net::HTTP::Post.new(uri)
req['Content-Type'] = 'application/json'
req.body = { username: 'foo', password: 'bar' }.to_json

res = https.request(req)