Step 4: Exchange code for token (POST AUTH)
POST {{authPath}}/{{envID}}/as/token
The token endpoint is used by the client to obtain an access token by presenting the client’s authorization grant. For authorization_code grants, the application calls the POST {{authPath}}/{{envID}}/as/token endpoint to acquire the access token. The request body must include values for the following properties:
-
grant_typeA string that specifies the grant type of the token request. In this example, the value is
authorization_code. -
codeA string that specifies the authorization code value returned by the authorization request.
-
redirect_uriA string that specifies the URL that specifies the return entry point of the application.
-
client_idA string that specifies the application ID.
-
client_secretA string that specifies the application’s secret property.
|
The application ID and the application secret are set as properties in the request body and authenticate the token request. |
The response data contains the access token and the ID token.
Usage summary
This sample demonstrates authentication with credentials in the POST body. Here are the key factors:
Token request
-
Authentication: None in the Authorization tab (set to "No Auth")
-
Request body: Includes client credentials as parameters:
-
grant_typeisauthorization_code -
code(authorization code) -
redirect_uri -
client_id={{postAuthAppID}}includes credential in request body -
client_secret={{postAuthAppSecret}}includes credential in request body
-
Comparison to CLIENT_SECRET_BASIC
-
BASIC: Credentials in header (base64 encoded)
-
POST: Credentials in body (plaintext parameters)
-
Both require HTTPS for security
When to use
-
Systems where manipulating HTTP headers is difficult, or frameworks that work better with form parameters.
Example Request
-
cURL
-
C#
-
Go
-
HTTP
-
Java
-
jQuery
-
NodeJS
-
Python
-
PHP
-
Ruby
-
Swift
curl --location --globoff '{{authPath}}/{{envID}}/as/token' \
--header 'Content-Type: application/x-www-form-urlencoded' \
--data-urlencode 'grant_type=authorization_code' \
--data-urlencode 'code={{postAuthCode}}' \
--data-urlencode 'redirect_uri=http://localhost:3000/callback' \
--data-urlencode 'client_id={{sharedWebAppID}}' \
--data-urlencode 'client_secret={{sharedWebAppSecret}}'
var options = new RestClientOptions("{{authPath}}/{{envID}}/as/token")
{
MaxTimeout = -1,
};
var client = new RestClient(options);
var request = new RestRequest("", Method.Post);
request.AddHeader("Content-Type", "application/x-www-form-urlencoded");
request.AddParameter("grant_type", "authorization_code");
request.AddParameter("code", "{{postAuthCode}}");
request.AddParameter("redirect_uri", "http://localhost:3000/callback");
request.AddParameter("client_id", "{{sharedWebAppID}}");
request.AddParameter("client_secret", "{{sharedWebAppSecret}}");
RestResponse response = await client.ExecuteAsync(request);
Console.WriteLine(response.Content);
package main
import (
"fmt"
"strings"
"net/http"
"io"
)
func main() {
url := "{{authPath}}/{{envID}}/as/token"
method := "POST"
payload := strings.NewReader("grant_type=authorization_code&code=%7B%7BpostAuthCode%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&client_id=%7B%7BsharedWebAppID%7D%7D&client_secret=%7B%7BsharedWebAppSecret%7D%7D")
client := &http.Client {
}
req, err := http.NewRequest(method, url, payload)
if err != nil {
fmt.Println(err)
return
}
req.Header.Add("Content-Type", "application/x-www-form-urlencoded")
res, err := client.Do(req)
if err != nil {
fmt.Println(err)
return
}
defer res.Body.Close()
body, err := io.ReadAll(res.Body)
if err != nil {
fmt.Println(err)
return
}
fmt.Println(string(body))
}
POST /{{envID}}/as/token HTTP/1.1
Host: {{authPath}}
Content-Type: application/x-www-form-urlencoded
grant_type=authorization_code&code=%7B%7BpostAuthCode%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&client_id=%7B%7BsharedWebAppID%7D%7D&client_secret=%7B%7BsharedWebAppSecret%7D%7D
OkHttpClient client = new OkHttpClient().newBuilder()
.build();
MediaType mediaType = MediaType.parse("application/x-www-form-urlencoded");
RequestBody body = RequestBody.create(mediaType, "grant_type=authorization_code&code={{postAuthCode}}&redirect_uri=http://localhost:3000/callback&client_id={{sharedWebAppID}}&client_secret={{sharedWebAppSecret}}");
Request request = new Request.Builder()
.url("{{authPath}}/{{envID}}/as/token")
.method("POST", body)
.addHeader("Content-Type", "application/x-www-form-urlencoded")
.build();
Response response = client.newCall(request).execute();
var settings = {
"url": "{{authPath}}/{{envID}}/as/token",
"method": "POST",
"timeout": 0,
"headers": {
"Content-Type": "application/x-www-form-urlencoded"
},
"data": {
"grant_type": "authorization_code",
"code": "{{postAuthCode}}",
"redirect_uri": "http://localhost:3000/callback",
"client_id": "{{sharedWebAppID}}",
"client_secret": "{{sharedWebAppSecret}}"
}
};
$.ajax(settings).done(function (response) {
console.log(response);
});
var request = require('request');
var options = {
'method': 'POST',
'url': '{{authPath}}/{{envID}}/as/token',
'headers': {
'Content-Type': 'application/x-www-form-urlencoded'
},
form: {
'grant_type': 'authorization_code',
'code': '{{postAuthCode}}',
'redirect_uri': 'http://localhost:3000/callback',
'client_id': '{{sharedWebAppID}}',
'client_secret': '{{sharedWebAppSecret}}'
}
};
request(options, function (error, response) {
if (error) throw new Error(error);
console.log(response.body);
});
import requests
url = "{{authPath}}/{{envID}}/as/token"
payload = 'grant_type=authorization_code&code=%7B%7BpostAuthCode%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&client_id=%7B%7BsharedWebAppID%7D%7D&client_secret=%7B%7BsharedWebAppSecret%7D%7D'
headers = {
'Content-Type': 'application/x-www-form-urlencoded'
}
response = requests.request("POST", url, headers=headers, data=payload)
print(response.text)
<?php
require_once 'HTTP/Request2.php';
$request = new HTTP_Request2();
$request->setUrl('{{authPath}}/{{envID}}/as/token');
$request->setMethod(HTTP_Request2::METHOD_POST);
$request->setConfig(array(
'follow_redirects' => TRUE
));
$request->setHeader(array(
'Content-Type' => 'application/x-www-form-urlencoded'
));
$request->addPostParameter(array(
'grant_type' => 'authorization_code',
'code' => '{{postAuthCode}}',
'redirect_uri' => 'http://localhost:3000/callback',
'client_id' => '{{sharedWebAppID}}',
'client_secret' => '{{sharedWebAppSecret}}'
));
try {
$response = $request->send();
if ($response->getStatus() == 200) {
echo $response->getBody();
}
else {
echo 'Unexpected HTTP status: ' . $response->getStatus() . ' ' .
$response->getReasonPhrase();
}
}
catch(HTTP_Request2_Exception $e) {
echo 'Error: ' . $e->getMessage();
}
require "uri"
require "net/http"
url = URI("{{authPath}}/{{envID}}/as/token")
http = Net::HTTP.new(url.host, url.port);
request = Net::HTTP::Post.new(url)
request["Content-Type"] = "application/x-www-form-urlencoded"
request.body = "grant_type=authorization_code&code=%7B%7BpostAuthCode%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&client_id=%7B%7BsharedWebAppID%7D%7D&client_secret=%7B%7BsharedWebAppSecret%7D%7D"
response = http.request(request)
puts response.read_body
let parameters = "grant_type=authorization_code&code=%7B%7BpostAuthCode%7D%7D&redirect_uri=http%3A%2F%2Flocalhost%3A3000%2Fcallback&client_id=%7B%7BsharedWebAppID%7D%7D&client_secret=%7B%7BsharedWebAppSecret%7D%7D"
let postData = parameters.data(using: .utf8)
var request = URLRequest(url: URL(string: "{{authPath}}/{{envID}}/as/token")!,timeoutInterval: Double.infinity)
request.addValue("application/x-www-form-urlencoded", forHTTPHeaderField: "Content-Type")
request.httpMethod = "POST"
request.httpBody = postData
let task = URLSession.shared.dataTask(with: request) { data, response, error in
guard let data = data else {
print(String(describing: error))
return
}
print(String(data: data, encoding: .utf8)!)
}
task.resume()