HTTP Stands for "Hyper Text Transfer Protocol", and is the protocol that applications use to access documents/webpages/data from the world wide web.

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Why was 303 skipped in HTTP/1.0?

While looking back over HTTP response codes today I noticed that the 301, 302, and 304 response codes were defined in HTTP/1.0 but not the 303 response code. Does anyone know why the number 303 was ...
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2answers
299 views

Phpmyadmin http password security

Is my password sent unencrypted when using Phpmyadmin through http? If not, is there any downside using http compared to https?
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1answer
2k views

http://www.example.com/http://www.example.com/ in Apache log?

I run a website, let's say www.example.com. On it I have a path and file, say www.example.com/path/file.html. The Apache log lists GET requests like: GET /path/file.html HTTP/1.1 Which is correct, ...
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2answers
164 views

What can cause the size of HTTP response to vary for the same response body?

I am trying to understand why the web server behaves differently for the following bad requests: Method Proto Status Req Body Res Referrer ...
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2answers
85 views

HTTP code 403, access denied & Options -Indexes

at "webmasters.stackexchange.com" I already found a similar topic: Stop directory listing using .htaccess and redirect to good error page Options -Indexes ErrorDocument 403 /path/to/403.html ...
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1answer
115 views

What was this hack-bot trying to achieve via directory traversal?

I was walking through my server logs and the following kinda stunned me: ACCESS ERROR 404 from IP 62.112.152.161: Path: /index.php?page=weblog&env=../../../../../../../../etc/passwd%00 ...
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1answer
115 views

Google is not seeing my HTTPS website

I have a website and it is working with HTTPS, programatically when someone got to HTTP it forward him to the HTTPS version. My issue that I see that Google Search is not seeing my pages, the website ...
2
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2answers
152 views

Deleted files still accessible without www in url

I have deleted all files and all hidden files off my server, there is nothing but log files which cannot be deleted. Ironically, files are accessible when nothing is there. Cache cleared, multiple ...
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1answer
441 views

Reduce HTTP Requests method for js and css

Is these way can Reduce HTTP Requests? multiple javascript files with & symbol <script type="text/javascript" ...
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1answer
1k views

How to tell Google to stop crawling my website via IP?

After a database server migration, I've noticed that GoogleBot started getting errors when trying to crawl my site. The reason seems to be that it is hitting my site via IP address (and due to my ...
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3answers
1k views

Why is a # sign added to the end of URLS?

Note: I'm asking this from the perspective of the site developers (trying to help someone there). not as a user. Please don't forward this to superuser.com. It's a server admin question. Have a look ...
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14 views

Is granular http logging for an application handled at the application level or the http server level?

I need to log all requests coming into the server. Typical things you would get from Apache log formatting or IIS. I am using a WSGI standards based server, Apache mod_wsgi, gunicorn, Tornado. It ...
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35 views

Caching a changing site

I run a website where the static content changes at least 4 times a week and I'm trying to figure out the best header arrangement to use. Currently I have all caching related headers in use. I have ...
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6k views

What is HTTP Method PROPFIND used for?

I notice a series lines never seen before on my server access log that runs like this consecutively within the same one second: PROPFIND /images/flag.jpg HTTP/1.1 405 493 265 511 - LibreOffice ...
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2answers
99 views

Should I make a page for every HTTP error?

I know that it is important to have an error document for 404, 403, 401 and 500. But what others, if any should I make to be completely sure that users do not see the default apache error page?
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2answers
111 views

How can I prevent HTTPS on another domain from wrongly showing on my HTTP-only domain?

So, I have a blog at domain.com. This blog is HTTP-only because I would gain almost nothing from adding SSL support. I have a web service now that I want to enable SSL support on that runs on the same ...
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1answer
58 views

Is this considered to be “Internal Near-Duplicates”?

Some people generate the same pages with a slight variation in keywords, title, country name, region name, etc... This is typically considered to be "Internal Near-Duplicates." I have seen a website ...
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1answer
87 views

Need a study about average latency due to HTTP request and server processing time when downloading images that are a part of DOM

I'm writing a thesis about css sprites and need to know the of the average HTTP request overhead when establishing a connection to download an image file that is a part of DOM. We conducted a study ...
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2answers
2k views

https:// search results appearing on Google for purely http:// site

I started weeding through my site's search results from Google today, using a site: search, to determine if there are any links that cause 404s and thus need redirecting. To my amazement I noticed ...
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186 views

http request terminating early

I noticed that on some of my sites, images were occasionally not getting downloaded fully. After a bit of investigation it appears that it is not restricted to images - .css, .js etc were also ...
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1answer
1k views

Avoid the login popup when using http-auth

I have an Apache. Under the DOCUMENTROOT is a folder with an .htpasswd file for http-auth. If I open the browser and request the content in the folder I get an Popup to login. Is there a way to avoid ...
2
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1answer
608 views

Using HTTP (insecure) ad providers on HTTPS (secure) site

As more and more browsers adopt stringent checks around preventing insecure content served up on secure sites, there is impact on the use of ad networks which in many cases don't support the secure ...
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1answer
290 views

Recommendations on how to validate an web server?

Does anyone know of any tools that can be run against web server to determine how compliant the server is with the various HTTP specs?
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2answers
85 views

Verifying that a user comes from a 'partner' site?

We're building a Drupal module that is going to be given to trusted 'corporate partners'. When a user clicks on a link, he should be redirected to our site as if he's a logged in user. How should I ...
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3answers
174 views

HTTP occurring twice in a URL

I ran into a website today that had two URLs and I'm completely stunned. The website, not to be specific, has a full address of http://example/cat/http://example/dog. I will say that the first part is ...
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2answers
94 views

HTML: Images always getting reloaded from server

I am finding that my web pages' images are always getting loaded from my server, even though they never change. Since these are images, not pages, I can't include an expiration date for them... How ...
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3answers
99 views

Confused about domain names

I am confused about the difference between http://www.example.com and http://example.com, is that true "www" is actually the subdomain of domain example.com? Do people usually redirect from ...
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1answer
126 views

URL appearance in Google results

Why do some Google results show the http prefix in the green URL and some don’t?
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4answers
385 views

How do I know whether a URL returns an HTTP 404 status code?

For any given URL, how can I (dis)confirm whether it returns an HTTP 404 status code? I found this tool but isn't there a cleaner, more natural way to find out, independently of other people's tools? ...
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2answers
2k views

Lots of HTTP HEAD requests originating from porn sites

The access log on my web server has a ton of HTTP HEAD requests coming from porn sites. What are HEAD requests and are they doing something bad with my site? Here is an excerpt from my log: (valid ...
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1answer
253 views

Are there any differences between URLs with and without “www” and “http://”

Are there any differences among these addresses? www.example.com http://www.example.com example.com
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1answer
3k views

IP Address headers (Remote_Addr) - When is this header sent by the browser?

I want to know when a browser includes the header - Remote_Addr in the HTTP request. I observed the request sent by the browser on loading stackoverflow.com, in the web console window of Firefox. ...
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1answer
146 views

Trailing slash on Root folder - Is it possible to remove it without 301?

I have noticed something very strange on the site I'm working on. We currently only show http://www.example.com. The URL http://www.example.com/ (slash at the end) gets 301ed to ...
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298 views

Make server force Excel to hand over hyperlink to browser without trying to load the page itself

I am not sure if this is an Excel (SuperUser) or WebMasters question since I may have exhausted the server option. Use case Our site allows downloading a result list in XLS format. A hyperlink is ...
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1answer
164 views

410 permanent delete not working

I've deleted a web page permanently and also added this rule in the bottom of my .htaccess: RewriteRule ^paysignet-payment-gateway-features-and-benefits.html$ - [G,L] But this url of this page: ...
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2answers
9k views

Where does the HTTP referer “applewebdata” come from?

My site uses a web stat service like Google Analytics, it uses a piece of javascript code to log what pages the visitor has visited and the refer url of each visit. I got some referer "applewebdata", ...
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1answer
18 views

Earliest browsers that support if-modified-since or if-none-match headers

Based on my observations, google and probably many others are in love with websites that include the Etag and Last-modified headers along with the if-modified-since and if-none-match header checking ...
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3answers
256 views

500 error returns website content

I'm using CloudFlare on my shared host. Recently all search engines and is-it-up sites have been getting a 500 error. I'm not sure who's to blame, my host or CloudFlare. I don't remember changing ...
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3answers
83 views

How can you tell google to stop indexing a resource?

We have an app we are migrating. The old website had deeply nested robots.txt files at some point and then the old developers started handling those request with redirects to the root page. So: a ...
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2answers
211 views

Search for my web site returns HTTPS results

My home page is set to Google and Google adds ?gws_rd=ssl to it. When I type search term form my site into search box Google returns bunch of indexes (different pages within my site) that starts with ...
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1answer
429 views

Videos from Youtube/Vimeo not displaying in iframes

I was giving a webinar about HTML today in Brackets. When showing how to use iframes, all my students managed to insert Google Maps using iframes but no one was able to make the YouTube and Vimeo ...
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2answers
65 views

The actual difference between styesheet in the header and a seperate file

I have always been taught to have all of the CSS in a separate file that is referenced from the head of the page. Reading this article, the author is talking about making the Guardian website ...
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2answers
134 views

http requests, using sprites and file sizes -

Hi all I'm in the process of finding out all about sprites and how they can speed up your pages. So I've used spriteMe to create a overall sprite image which is 130kb, this is made up of 14 images ...
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1answer
383 views

CSS Sprites: Are they worth the trouble?

I can't help but wonder whether CSS sprites are very much over-used. First of all, if I stick all my images in a single file it makes an aweful lot of empty space. I know, that shouldn't make an ...
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1answer
406 views

Is it possible to invalidate cache when the referrer adress is different?

Suppose I serve an image and if someone visits from a forum then I want it to download that image. If they visit again from the same forum then I want it to use cache, but if they visit from another ...
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2answers
1k views

cname forward from https to http

We are migrating web host and I wonder if it is possible in the migration phase to do a CNAME forward from https://address1.com to http://address2.com. Would the certificate still work even if the new ...
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2answers
171 views

What is the syntax for using 410 status for deleted pages?

I want to permanently delete some pages in my site using 410 status. I'm not sure of correct syntax of removing pages using 410. I've found one syntax and I've a page( duplicate product page content) ...
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2answers
173 views

why is having (or excluding) 'www' in the URL affecting how my site displays to users?

I am cleaning markup on a website for my first customer. I did not build the site; I want to remove the table-based design and replace it with proper CSS, before I add a shopping cart to the site. ...
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175 views

Ways for client to include page ID in query?

I'm no expert on web development, and need to find a way to let the browser call a PHP routine on the server with the current document ID as parameter, eg. http://www.acme.com/index.php?id=1 I then ...
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1answer
358 views

Could too many HTTP requests using AJAX result in browser crashes?

We are running an ASP.NET web application, and recently we received a lot of crash reports from users. It sometimes crashes the Chrome browser, and sometimes it loads indefinitely. This is how our ...