Instagram api error bad ios request

Question

Hi, I had a problem with Instagram while performing the authentication process. It worked fine a few weeks ago, nothing has changed in the code.

Now the problem is that after the login process on Instagram, Safari displays the "Bad request 400" error and nothing more.

Answer 1

I recently had the same issue with Instagram api. Everything worked fine and suddenly the 400th request - you must provide client_id.

I debugged OAuth 2.0 flow and after extensive research realized that I should install

Content-Type: application / x-www-form-urlencoded

in the request. Therefore, if someone else has this problem, make sure you have the header specified in the request that retrieves the access token.

Answer 2

I used WKWEbView due to URI redirection

func webView(_ webView: WKWebView, decidePolicyFor navigationAction: WKNavigationAction, decisionHandler: @escaping (WKNavigationActionPolicy) -> Void) { //print(webView.url?.absoluteString) decisionHandler(.allow) let searchString = "https://example.com"//your redirect uri if (webView.url?.absoluteString.starts(with: searchString))! { let code = extractCode(webView.url!.absoluteString) if code != nil{ print("*****found") print("code: \(code)") self.loginWithInstagram(code!) } } } func loginWithInstagram(_ code: String) { let headers = [ "Content-Type": "application/x-www-form-urlencoded", "Accept": "*/*", "Cache-Control": "no-cache", "Host": "api.instagram.com", "Accept-Encoding": "gzip, deflate", "Content-Length": "237", "Connection": "keep-alive", "cache-control": "no-cache" ] let postData = NSMutableData(data: "client_id=xxx".data(using: String.Encoding.utf8)!) postData.append("&code=".data(using: String.Encoding.utf8)!) postData.append(code.data(using: String.Encoding.utf8)!) postData.append("&redirect_uri=https://example.com".data(using: String.Encoding.utf8)!) postData.append("&grant_type=authorization_code".data(using: String.Encoding.utf8)!) postData.append("&client_secret=xxx".data(using: String.Encoding.utf8)!) let request = NSMutableURLRequest(url: NSURL(string: "https://api.instagram.com/oauth/access_token")! as URL, cachePolicy: .useProtocolCachePolicy, timeoutInterval: 10.0) request.httpMethod = "POST" request.allHTTPHeaderFields = headers request.httpBody = postData as Data let session = URLSession.shared let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in guard let unwrappedData = data else { return } do { let str = try JSONSerialization.jsonObject(with: unwrappedData, options: .allowFragments) print(str) } catch { print("json error: \(error)") } if (error != nil) { //print(error) } else { let httpResponse = response as? HTTPURLResponse //print(httpResponse) } }) dataTask.resume() } } 

// This works in my application

Answer 3

The problem you see is related to the callback url. Instagram no longer accepts custom schemes. Your callback must be http or https (it cannot be, for example customapp: //).