Executing an HTTP POST request on Groovy - json

Question

So I got the short straw at work and I have to learn some Groovy. I'm part of the infrastructure team, so I don't know a lot.
Basically what I have to do is:
- Get an event (DONE)
- Parse the event with an specific json format (WORKING ON IT)
- Make a POST request against the API (NOT DONE AT ALL)
So, I'm having some problems to test the POST request I'm making.
This is my code:
//def post = new URL("https://httpbin.org/post").openConnection();
//def message = '{"message":"this is a message"}'
def post = new URL("https://api.duckduckgo.com").openConnection();
def message = '{"q=DuckDuckGo&format=json&pretty=1"}'
post.setRequestMethod("POST")
post.setDoOutput(true)
post.setRequestProperty("Content-Type", "application/json")
post.getOutputStream().write(message.getBytes("UTF-8"));
def postRC = post.getResponseCode();
println(postRC);
if(postRC.equals(200)) {
println(post.getInputStream().getText());
}
This is the response, the first test is from httpbin.org, the second test is from duckduckgo:
root#test:/mnt/c/groovy-dev/test# groovy post.groovy
200
{
"args": {},
"data": "{\"message\":\"this is a message\"}",
"files": {},
"form": {},
"headers": {
"Accept": "text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2",
"Content-Length": "31",
"Content-Type": "application/json",
"Host": "httpbin.org",
"User-Agent": "Java/1.8.0_221"
},
"json": {
"message": "this is a message"
},
"origin": "190.188.58.175, 190.188.58.175",
"url": "https://httpbin.org/post"
}
root#test:/mnt/c/groovy-dev/test# groovy post.groovy
500
I got a response from httpbin, but not from duckduckgo. I don't know if I'm doing something wrong or there is a problem with the API. Although I tested it with Postman and its working correctly.
What I'm missing?
Also, the API I will have to access in the end, uses authentication. Do you have any suggestion how to handle it?
Thanks