redirect after a fetch post call

Question

I am creating an social login page with an Access Management (AM) server. When user click on the login button then I make a fetch http post call to AM server. AM server generates a HTTP 301 redirect response with auth cookies to the social login page. I need to follow somehow this redirect response and show the new content in the web browser.

UI: ReactJS

Request:

POST /api/auth/socialauth/initiate HTTP/1.1 Host    example.com User-Agent  Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:49.0) Accept  */* Accept-Language en-US,en;q=0.5 Accept-Encoding gzip, deflate origin  http://web.example.com:8080 Referer http://web.example.com:8080/myapp/login Cookie  authId=...; NTID=... 

Response

HTTP/1.1 307 Temporary Redirect https://www.facebook.com/dialog/oauth?client_id=...&scope=public_profile%2Cemail&redirect_uri=http%3A%2F%2Fam.example.com%3A8083%2Fopenam%2Foauth2c%2FOAuthProxy.jsp&response_type=code&state=qtrwtidnwdpbft4ctj2e9mv3mjkifqo 

React code:

initiateSocialLogin() {     var url = "/api/auth/socialauth/initiate";      fetch(url, { method: 'POST' })         .then(response => {             // HTTP 301 response             // HOW CAN I FOLLOW THE HTTP REDIRECT RESPONSE?         })         .catch(function(err) {             console.info(err + " url: " + url);         }); } 

How I can follow the redirect response and show the new content in the web browser?

Answer 1

Request.redirect could be "follow", "error" or "manual".

If it is "follow", fetch() API follows the redirect response (HTTP status code = 301,302,303,307,308).

If it is "error", fetch() API treats the redirect response as an error.

If it is "manual", fetch() API doesn't follow the redirect and returns an opaque-redirect filtered response which wraps the redirect response.

Since you want to redirect after a fetch just use it as

fetch(url, { method: 'POST', redirect: 'follow'})     .then(response => {         // HTTP 301 response     })     .catch(function(err) {         console.info(err + " url: " + url);     });