http-headers

问题 I know in PHP, it sends the X-Powered-By header to have the PHP version. I also know by appending some checksums, you can get access to PHP's credits, and some random images (more info here). I also know in php.ini you can turn expose_php = off . But here is something I have done on a few sites, and that is use header('X-Powered-By: Alex'); When I view the headers, I can see that it is now 'Alex' instead of the PHP version. My question is, will this send the previous PHP header first (before

问题 When a browser's Accept request header says something like the following: Accept: application/xml,application/xhtml+xml,text/html;q=0.9,text/plain;q=0.8,image/png,*/*;q=0.5 Does that mean that application/xml , application/xhtml+xml , and text/html all have a quality param of 0.9 ? Or does it mean that application/xml and application/xhtml+xml have the default ( q=1 ) and text/html has the q=0.9 param? I'm assuming the former, but was hoping someone knew more definitively. 回答1: No, if the

问题 I'm using NSURLSession to request a JSON resource from an HTTP server. The server uses Cache-Control to limit the time the resource is cached on clients. This works great, but I'd also like to cache a deserialized JSON object in memory as it is accessed quite often, while continuing to leverage the HTTP caching mechanisms built into NSURLSession. I'm thinking I can save a few HTTP response headers: Content-MD5 , Etag , and Last-Modified along with the deserialized JSON object (I'm using those

问题 Basically, I want to figure out whether I should download a file using AJAX, depending on how large the filesize is. I guess this question could also be rephrased as: How do I get only the header of an ajax request? EDIT : ultima-rat0 in the comments told me of two questions that had already been asked that apparently are the same as this one. They are very similar, but they both want jQuery. I want a non-jQuery solution to this. 回答1: You can get XHR response header data manually: http://www

问题 Basically, I want to figure out whether I should download a file using AJAX, depending on how large the filesize is. I guess this question could also be rephrased as: How do I get only the header of an ajax request? EDIT : ultima-rat0 in the comments told me of two questions that had already been asked that apparently are the same as this one. They are very similar, but they both want jQuery. I want a non-jQuery solution to this. 回答1: You can get XHR response header data manually: http://www

问题 I have used the code "request.getHeader("Referer");" The code seemed to work fine. But recently I found out that it is not working in IE. IE was throwing null. I am now left clueless about how to go forward. Is there any alternative for "Referer" header which can get the previous link and work correctly in all the browsers? Setting a custom header from the previous link is not a viable option for me. So someone please help me out on this. Thanks. 回答1: The "Referer" header entry is optional.

问题 This seems like a simple operation. We have a need in our development environment (running on XP/IIS 5) to add some headers into each HttpRequest arriving at our application. (This is to simulate a production environment that we don't have available in dev). At first blush, this seemed like a simple HttpModule, along the lines of: public class Dev_Sim: IHttpModule { public void Init(HttpApplication app) { app.BeginRequest += delegate { app.Context.Request.Headers.Add("UserName", "XYZZY"); };

问题 I have Amazon S3 objects, and for each object, I have set Cache-Control: public, max-age=3600000 That is roughly 41 days. And I have Amazon CloudFront Distribution set with Minimum TTL also with 3600000. This is the first request after clearing cache. GET /1.0.8/web-atoms.js HTTP/1.1 Host: d3bhjcyci8s9i2.cloudfront.net Connection: keep-alive Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 User-Agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko)

问题 I searched/googled a lot but could not get the answer on how to capture HTTP response headers in UIWebview . Say I redirect to user to registration gateway(which is already active) in UIWebview on App Launch and when user finishes the registration, the app should be notified with the successful unique id assigned to the user on registration which is passed back in HTTP Response Headers. Is there any direct way to capture/print the HTTP Response headers using UIWebview ? 回答1: I love the

问题 As the question states basically. If you have X-UA-Compatible in both your HTTP headers and a meta tag on your document, and they conflict, which one gets respected by IE? 回答1: TL;DR: The meta tag wins I found the following (updated) flowchart here (link is broken) and associated blog post that provides an explanation of how IE9 determines document mode: 来源： https://stackoverflow.com/questions/9128739/which-x-ua-compatible-takes-precedence-http-header-or-meta-tags