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This will remove any special handling of. The AddEncoding directive maps the given filename extensions to the specified encoding type. This will cause filenames containing the. Z extension to be marked as encoded with x-compress. Older clients expect x-gzip and x-compress; however, the standard dictates that they're equivalent to gzip and compress, respectively. Apache does content-encoding comparisons by ignoring any leading x-.
When responding with an encoding, Apache will use whatever form i. If the client didn't specifically request a particular form, Apache will use the form given by the AddEncoding directive. To make this long story short, you should always use x-gzip and x-compress for these two specific encodings.
More recent encodings, such as deflate, should be specified without the x-. The RemoveEncoding directive removes any encoding associations for files with the given extensions. An example of its use might be:. This will cause foo. This might, for example, be a hash of the binary file to prevent illicit alteration. Note that RemoveEncoding directives are processed after any AddEncoding directives, so it is possible they may undo the effects of the latter if both occur within the same directory configuration.
This directive specifies the name of the character set that will be added to any response that does not have any parameter on the content type in the HTTP headers. This will override any character set specified in the body of the document via a META tag. A setting of AddDefaultCharset Off disables this functionality. AddDefaultCharset On enables Apache's internal default charset of iso as required by the directive. You can also specify an alternate charset to be used; e.
AddDefaultCharset utf The AddCharset directive maps the given filename extensions to the specified content charset. Then the document xxxx. The AddCharset directive is useful both to inform the client about the character encoding of the document so that the document can be interpreted and displayed appropriately, and for content negotiation, where the server returns one from several documents based on the client's charset preference. The RemoveCharset directive removes any character-set associations for files with the given extensions.
The AddHandler directive wakes up an existing handler and maps the filename s extension1 , etc. You might specify the following in your Config file:. From then on, any file with the extension. For instance, in Chapter 10 , we write:. The RemoveHandler directive removes any handler associations for files with the given extensions. This has the effect of returning. The extension argument is case insensitive and can be specified with or without a leading dot. AcceptFilter controls a BSD-specific filter optimization.
Currently, only FreeBSD supports this. All rights reserved. Context: Server config, virtual host, directory,. DefaultType DefaultType mime-type Anywhere The server must inform the client of the content type of the document, so in the event of an unknown type, it uses whatever is specified by the DefaultType directive. ForceType ForceType media-type directory,. RemoveType RemoveType extension [extension] WARNING: RemoveType directives are processed after any AddType directives, so it is possible that they may undo the effects of the latter if both occur within the same directory configuration.
AddEncoding AddEncoding mime-enc extension extension Anywhere The AddEncoding directive maps the given filename extensions to the specified encoding type. For example: AddEncoding x-gzip. Z This will cause filenames containing the.
RemoveEncoding RemoveEncoding extension [extension] AddCharset AddCharset charset extension [extension] Server config, virtual host, directory,. For example: AddLanguage ja. RemoveCharset Directive RemoveCharset extension [extension] directory,.
The corresponding directives follow: AddHandler AddHandler handler-name extension1 extension You might specify the following in your Config file: AddHandler cgi-script cgi bzq From then on, any file with the extension.
SetHandler SetHandler handler-name directory,. RemoveHandler Directive RemoveHandler extension [extension] Security Some content types, such as executable programs, are inherently unsafe. For this reason, these MIME types are usually restricted in terms of what actions a web browser will take when given that type of content.
An executable program should not be executed on the user's computer and should at least cause a dialog to appear asking the user if they wish to download the file. MIME type guessing has led to security exploits in Internet Explorer that were based upon a malicious author incorrectly reporting a MIME type of a dangerous file as a safe type.
This bypassed the normal download dialog, resulting in Internet Explorer guessing that the content was an executable program and then running it on the user's computer. If your content was created using commercial software, read the vendor's documentation to see what MIME types should be reported for the application.
Pay close attention as the application may have multiple MIME types that differ by only one letter. The request tab gives you a list of all the resources the page loaded. Clicking on any resource will list all the information available, including the page's Content-Type header. Reload the page and select the resource you want to inspect. Under headers look for Content-Type and it will report the content type of the resource. NGINX does not have a.
If you're using a server-side script or framework to generate content, the way to indicate the content type will depend on the tool you're using. Check the framework or library's documentation.
The canonical reference for building a production grade API with Spring. In this tutorial, we'll take a look at various strategies for getting MIME types of a file. We'll look at ways to extend the MIME types available to the strategies, wherever applicable. Now, if the file is recognized by any of the implementations, the content type is returned. However, if that doesn't happen, a system-default file type detector is invoked.
However, the default implementations are OS specific and might fail depending on the OS that we are using. In addition to that, it's also important to note that the strategy will fail if the file isn't present in the filesystem. Furthermore, if the file doesn't have an extension, it will result in failure. Let's briefly explore each of them. We also have the option of using guessContentTypeFromStream instead, which uses the first few characters of the input stream, to determine the type.
This table is then used to resolve the input file type. By default, the class uses content-types. This class came with Java 6, and hence comes very handy when we're working with JDK 1. Here, we can either pass the name of the file or the File instance itself as the parameter to the function.
Octet-Stream Subtype. RFC 3. If you don't define it then you are telling that you don't know what it is and leave decision to receiver and receiver could then check if it walks like duck and Learn more. Unknown file type MIME? Ask Question. Asked 11 years, 6 months ago. Active 4 years, 8 months ago. Viewed 71k times. Improve this question. Shimmy Weitzhandler Shimmy Weitzhandler Add a comment.
Active Oldest Votes. Improve this answer. Bombe Bombe Actually, per RFC's you should not send any type information with unknown data. Jpnh Yes, that's right. Content-Type header should not be present whenever it is unknown. This makes web clients offer saving file. In practice either option would be correct. I should have chosen better wording to avoid confusion. On top of being wrong, this is a security hole, especially considering barely visible modern download managers.
The right answer is no content-type header. If you don't know which kind of file it is, the browser may know it so let it guess, especially when it known the context of use image, document, script, And even if a browser is knowingly downloading an executable file, it doesn't "possibly execute" it without the user asking to; merely downloading an executable doesn't imply that I want it executed right now. Right now I don't believe you. Show 7 more comments. Content-Type A sender that generates a message containing a payload body SHOULD generate a Content-Type header field in that message unless the intended media type of the enclosed representation is unknown to the sender.
What's different then? And, as already stated above: RFC 3. Sampo Sarrala - codidact. This answer deserve upvote as it is the only in the truth. In email, for example, the rules are completely different. See also discussion at proposed duplicate stackoverflow.
It would be nice if the browsers would not try to download the file if the "Content-Disposition" wasn't set, but there are too many web sites haphazardly downloading files without setting their filename to use.
In the above, note that a signed mobileconfig, a signed mobile provisioning, and a binary plist are basically interpreted as binary files. This means that when possible, use signed mobileconfig and mobileprovisioning files so you have a consistent handler.
In the above example we set a plist to plain in order to show that, well, sometimes it is. Alternatively or additively if you need to host both binary and flat plist files , you could create an. Then add each using the above types. To update on nginx, edit the mime. Once found, in mime. Sign up to join this community. The best answers are voted up and rise to the top.
How can I make all unrecognized file types as binary in Apache2? Ask Question. Asked 9 years, 9 months ago. Active 9 years, 9 months ago. Viewed 5k times. Improve this question. Eonil Eonil 8, 14 14 gold badges 32 32 silver badges 52 52 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Eduardo Ivanec Eduardo Ivanec This is correct, but I'll add two points: one, don't test with Internet Explorer, which tries to guess content types; use Firefox or another decent browser.
Also, DefaultType None should be the default configuration; check to make sure you aren't overriding this elsewhere. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password.