Exchange or refresh an access token

curl --request POST \
  --url 'https://localhost:8080/api/v1/auth/token' \
  --header 'Content-Type: application/json' \
  --data '{"grant_type":"urn:ietf:params:oauth:grant-type:token-exchange","refresh_token":"string","subject_token":"string","subject_token_type":"urn:ietf:params:oauth:token-type:access_token"}'

const response = await fetch("https://localhost:8080/api/v1/auth/token", {
  method: "POST",
  headers: {
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
    "refresh_token": "string",
    "subject_token": "string",
    "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
  })
});

const data = await response.json();

interface TokenResponse {
  access_token?: string;
  expires_in?: number;
  issued_token_type?: string;
  refresh_expires_in?: number;
  refresh_token?: string;
  scope?: string;
  token_type?: string;
}

const response = await fetch("https://localhost:8080/api/v1/auth/token", {
  method: "POST",
  headers: {
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
    "refresh_token": "string",
    "subject_token": "string",
    "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
  })
});
if (!response.ok) throw new Error(`${response.status} ${response.statusText}`);

const data: TokenResponse = await response.json();

import requests

response = requests.post(
    "https://localhost:8080/api/v1/auth/token",
    headers={
        "Content-Type": "application/json",
    },
    json={
        "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
        "refresh_token": "string",
        "subject_token": "string",
        "subject_token_type": "urn:ietf:params:oauth:token-type:access_token",
    },
)
response.raise_for_status()
print(response.json())

package main

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

func main() {
	body := strings.NewReader(`{
	  "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
	  "refresh_token": "string",
	  "subject_token": "string",
	  "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
	}`)
	req, err := http.NewRequest(http.MethodPost, "https://localhost:8080/api/v1/auth/token", body)
	if err != nil {
		panic(err)
	}
	req.Header.Set("Content-Type", "application/json")

	res, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer res.Body.Close()

	data, err := io.ReadAll(res.Body)
	if err != nil {
		panic(err)
	}
	fmt.Println(res.Status, string(data))
}

import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;

public class Example {
    public static void main(String[] args) throws Exception {
        HttpRequest request = HttpRequest.newBuilder()
            .uri(URI.create("https://localhost:8080/api/v1/auth/token"))
            .header("Content-Type", "application/json")
            .method("POST", HttpRequest.BodyPublishers.ofString("""
                {
                  "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
                  "refresh_token": "string",
                  "subject_token": "string",
                  "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
                }
                """))
            .build();

        HttpResponse<String> response = HttpClient.newHttpClient()
            .send(request, HttpResponse.BodyHandlers.ofString());
        System.out.println(response.statusCode() + " " + response.body());
    }
}

using System.Text;

using var client = new HttpClient();
using var request = new HttpRequestMessage(HttpMethod.Post, "https://localhost:8080/api/v1/auth/token");
request.Content = new StringContent("""
    {
      "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
      "refresh_token": "string",
      "subject_token": "string",
      "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
    }
    """, Encoding.UTF8, "application/json");

using var response = await client.SendAsync(request);
Console.WriteLine($"{(int)response.StatusCode} {await response.Content.ReadAsStringAsync()}");

<?php

$ch = curl_init('https://localhost:8080/api/v1/auth/token');
curl_setopt_array($ch, [
    CURLOPT_CUSTOMREQUEST => 'POST',
    CURLOPT_HTTPHEADER => [
        'Content-Type: application/json',
    ],
    CURLOPT_POSTFIELDS => <<<'JSON'
    {
      "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
      "refresh_token": "string",
      "subject_token": "string",
      "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
    }
    JSON,
    CURLOPT_RETURNTRANSFER => true,
]);

$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
echo $status . " " . $response . PHP_EOL;

require "net/http"

uri = URI("https://localhost:8080/api/v1/auth/token")
request = Net::HTTP::Post.new(uri)
request["Content-Type"] = "application/json"
request.body = <<~'JSON'
  {
    "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
    "refresh_token": "string",
    "subject_token": "string",
    "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
  }
JSON

response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == "https") do |http|
  http.request(request)
end
puts "#{response.code} #{response.body}"

// Cargo.toml dependencies: reqwest (features "json"), serde_json, tokio (features "full")
use serde_json::json;

#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
    let response = reqwest::Client::new()
        .post("https://localhost:8080/api/v1/auth/token")
        .json(&json!({
            "grant_type": "urn:ietf:params:oauth:grant-type:token-exchange",
            "refresh_token": "string",
            "subject_token": "string",
            "subject_token_type": "urn:ietf:params:oauth:token-type:access_token"
        }))
        .send()
        .await?;

    println!("{} {}", response.status(), response.text().await?);
    Ok(())
}