how to pass parameters to an http request that call which takes the POST payload as form-data progra-CodePudding

I have an HTTP POST request that accepts the body as form-data.

grant_type: client_credentials

when I use this API in an application, I need to pass a client_id and client_secret parameter to this call.

so far I have

   const postRequest = {
      url: 'https://address',
      method: 'POST',
      headers: {
        'authorization': 'Basic xyz',
        'content-type': 'application/x-www-form-urlencoded'
      },
     formData: {
        'grant_type': 'client_credentials'
      }
    };

How do I include the id and secret into this request? I have also tried

 formData: {
     'grant_type' : 'client_credentials',
     'client_id' :'id',
    'client_secret' : 'secret'
  }

that does not work either as stated in How to use FormData for AJAX file upload?

CodePudding user response：

This is an OAuth2 flow, and it's most likely you need to pass this in your Basic authorization header.

  headers: {
    'authorization': 'Basic '   btoa(`${clientId}:${clientSecret}`),
    'content-type': 'application/x-www-form-urlencoded'
  },

It's even better to use a good existing OAuth2 library to handle the heavy lifting. I've open sourced mine:

https://github.com/badgateway/oauth2-client

it would work like this:

const client = new OAuth2Client({
  tokenEndpoint: 'https://address',
  clientId: '...',
  clientSecret: '...',
});
const result = await client.clientCredentials();