Status 400 - Missing Client id when refreshing User token with grantType=refresh_token[on Postman it works]]

API
2

I found the error… its somehow Axios or the fact that i didnt encode as needed… dont know… it worked for two ways…

Way 1:

    function testFetch() {
      let body = new FormData();
      body.append("grant_type", "refresh_token")
      body.append("refresh_token", testlol)
      body.append("client_id", TWITCH_CLIENT_ID)
      body.append("client_secret", TWITCH_SECRET)
      fetch("https://id.twitch.tv/oauth2/token", {

        method: 'POST',
        headers: {
          //tried the Postman Header Settings
          //'Content-Type': 'application/x-www-form-urlencoded',
          Accept: "*/*",
          "Accept-Encoding": "gzip, deflate, br",
          Connection: "keep-alive"
          //'Accept': 'application/json'
        },
        body: body,
      }).then(async res => console.log(res, await res.json())).catch(async res => console.log(res, await res.json()))
        }

  1. Way:

     function test1212() {
   const details = {
     grant_type: "refresh_token",
     refresh_token: testlol,
     client_id: TWITCH_CLIENT_ID,
     client_secret: TWITCH_SECRET

   }

   let formBody  = []

   for (var property in details) {
     var encodedKey = encodeURIComponent(property);
     var encodedValue = encodeURIComponent(details[property]);

     formBody.push(encodedKey + "=" + encodedValue);

   }

   formBody = formBody.join("&");

   axios({
     method: 'POST',
     url: "https://id.twitch.tv/oauth2/token",
     headers: {
       //"Authorization": "OAuth " + lol,
       'Content-Type': 'application/x-www-form-urlencoded;charset=UTF-8',
       Accept: "*/*",
       "Accept-Encoding": "gzip, deflate, br",
       Connection: "keep-alive"
       //'Accept': 'application/json'
     },

     data: formBody

   }

   ).then(result => console.log(result)).catch(result => console.log(result))

 }

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