If you are using PHP’s curl bindings, you can check the error code using curl_getinfo as such: $handle = curl_init($url); curl_setopt($handle, CURLOPT_RETURNTRANSFER, TRUE); /* Get the HTML or whatever is linked in $url. */ $response = curl_exec($handle); /* Check for 404 (file not found). */ $httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE); if($httpCode == 404) { /* Handle … Read more
Mu. No correct way exists, not even one that’s consistent across browsers. This is a problem that comes from the HTTP specification (section 15.6): Existing HTTP clients and user agents typically retain authentication information indefinitely. HTTP/1.1. does not provide a method for a server to direct clients to discard these cached credentials. On the other … Read more
You can set specific cache-headers for a whole folder in either your root web.config: <?xml version=”1.0″ encoding=”UTF-8″?> <configuration> <!– Note the use of the ‘location’ tag to specify which folder this applies to–> <location path=”images”> <system.webServer> <staticContent> <clientCache cacheControlMode=”UseMaxAge” cacheControlMaxAge=”00:00:15″ /> </staticContent> </system.webServer> </location> </configuration> Or you can specify these in a web.config file in … Read more
In short: Only ASCII is guaranteed to work. Some non-ASCII bytes are allowed for backwards compatibility, but are not supposed to be displayable. HTTPbis gave up and specified that in the headers there is no useful encoding besides ASCII: Historically, HTTP has allowed field content with text in the ISO-8859-1 charset [ISO-8859-1], supporting other charsets … Read more
I finally figured this out – http://blog.serendeputy.com/posts/how-to-prevent-browsers-from-caching-a-page-in-rails/ in application_controller.rb. After Ruby on Rails 5: class ApplicationController < ActionController::Base before_action :set_cache_headers private def set_cache_headers response.headers[“Cache-Control”] = “no-cache, no-store” response.headers[“Pragma”] = “no-cache” response.headers[“Expires”] = “Mon, 01 Jan 1990 00:00:00 GMT” end end Ruby on Rails 4 and older versions: class ApplicationController < ActionController::Base before_filter :set_cache_headers private def … Read more
Easy, just use the HEAD method, instead of GET or POST: function UrlExists(url, callback) { var http = new XMLHttpRequest(); http.open(‘HEAD’, url); http.onreadystatechange = function() { if (this.readyState == this.DONE) { callback(this.status != 404); } }; http.send(); } This is just a short example to show how to use the HEAD method. Production code may … 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.
Simply call getUrl() on URLConnection instance after calling getInputStream(): URLConnection con = new URL( url ).openConnection(); System.out.println( “orignal url: ” + con.getURL() ); con.connect(); System.out.println( “connected url: ” + con.getURL() ); InputStream is = con.getInputStream(); System.out.println( “redirected url: ” + con.getURL() ); is.close(); If you need to know whether the redirection happened before actually getting … Read more
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.
Usually, all you need to do is to “Add CORS Configuration” in your bucket properties. The <CORSConfiguration> comes with some default values. That’s all I needed to solve your problem. Just click “Save” and try again to see if it worked. If it doesn’t, you could also try the code below (from alxrb answer) which … Read more