curl --request POST \
  --url http://localhost:1234/api/services/cider/playback/volume \
  --header 'Content-Type: application/json' \
  --header 'quack: <quack>' \
  --data '{
  "volume": 123
}'

const options = {
  method: 'POST',
  headers: {quack: '<quack>', 'Content-Type': 'application/json'},
  body: JSON.stringify({volume: 123})
};

fetch('http://localhost:1234/api/services/cider/playback/volume', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

const url = 'http://localhost:1234/api/services/cider/playback/volume';
const options = {
  method: 'POST',
  headers: {quack: '<quack>', 'Content-Type': 'application/json'},
  body: JSON.stringify({volume: 123})
};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error(err));

import requests

url = "http://localhost:1234/api/services/cider/playback/volume"

payload = { "volume": 123 }
headers = {
    "quack": "<quack>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

package main

import (
	"fmt"
	"strings"
	"net/http"
	"io"
)

func main() {

	url := "http://localhost:1234/api/services/cider/playback/volume"

	payload := strings.NewReader("{\n  \"volume\": 123\n}")

	req, _ := http.NewRequest("POST", url, payload)

	req.Header.Add("quack", "<quack>")
	req.Header.Add("Content-Type", "application/json")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

val client = OkHttpClient()

val mediaType = MediaType.parse("application/json")
val body = RequestBody.create(mediaType, "{\n  \"volume\": 123\n}")
val request = Request.Builder()
  .url("http://localhost:1234/api/services/cider/playback/volume")
  .post(body)
  .addHeader("quack", "<quack>")
  .addHeader("Content-Type", "application/json")
  .build()

val response = client.newCall(request).execute()

HttpResponse<String> response = Unirest.post("http://localhost:1234/api/services/cider/playback/volume")
  .header("quack", "<quack>")
  .header("Content-Type", "application/json")
  .body("{\n  \"volume\": 123\n}")
  .asString();