A good reason is for security – this can prevent CSRF attacks because this header cannot be added to the AJAX request cross domain without the consent of the server via CORS. Only the following headers are allowed across origins: Accept Accept-Language Content-Language Last-Event-ID Content-Type any others cause a “pre-flight” request to be issued in … Read more
In case of CORS requests, browsers can only access the following response headers by default: Cache-Control Content-Language Content-Type Expires Last-Modified Pragma If you would like your client app to be able to access other headers, you need to set the Access-Control-Expose-Headers header on the server: Access-Control-Expose-Headers: Access-Token, Uid
from flask import request request.headers.get(‘your-header-name’) request.headers behaves like a dictionary, so you can also get your header like you would with any dictionary: request.headers[‘your-header-name’]
The best HTTP header for your client to send an access token (JWT or any other token) is the Authorization header with the Bearer authentication scheme. This scheme is described by the RFC6750. Example: GET /resource HTTP/1.1 Host: server.example.com Authorization: Bearer eyJhbGciOiJIUzI1NiIXVCJ9TJV…r7E20RMHrHDcEfxjoYZgeFONFh7HgQ If you need stronger security protection, you may also consider the following IETF … Read more
IF: you only need a single header, instead of all headers, the quickest method is: <?php // Replace XXXXXX_XXXX with the name of the header you need in UPPERCASE (and with ‘-‘ replaced by ‘_’) $headerStringValue = $_SERVER[‘HTTP_XXXXXX_XXXX’]; ELSE IF: you run PHP as an Apache module or, as of PHP 5.4, using FastCGI (simple … Read more
public ActionResult Download() { var document = … var cd = new System.Net.Mime.ContentDisposition { // for example foo.bak FileName = document.FileName, // always prompt the user for downloading, set to true if you want // the browser to try to show the file inline Inline = false, }; Response.AppendHeader(“Content-Disposition”, cd.ToString()); return File(document.Data, document.ContentType); } NOTE: … Read more
The Content-Security-Policy meta-tag allows you to reduce the risk of XSS attacks by allowing you to define where resources can be loaded from, preventing browsers from loading data from any other locations. This makes it harder for an attacker to inject malicious code into your site. I banged my head against a brick wall trying … Read more
It’s the number of bytes of data in the body of the request or response. The body is the part that comes after the blank line below the headers.
Use header to modify the HTTP header: header(‘Content-Type: text/html; charset=utf-8’); Note to call this function before any output has been sent to the client. Otherwise the header has been sent too and you obviously can’t change it any more. You can check that with headers_sent. See the manual page of header for more information.
There are several solutions depending on what you need… If you want to add a custom header (or set of headers) to an individual request then just add the headers property: // Request with custom header $.ajax({ url: ‘foo/bar’, headers: { ‘x-my-custom-header’: ‘some value’ } }); If you want to add a default header (or … Read more