Enable IIS7 gzip

How can I enable IIS7 to gzip static files like js and css and how can I test if IIS7 is really gziping them before sending to the client?

Thanks!

Why use deflate instead of gzip for text files served by Apache?

What advantages do either method offer for html, css and javascript files served by a LAMP server. Are there better alternatives?

The server provides information to a map application using Json, so a high volume of small files.

See also Is there any performance hit involved in choosing gzip over deflate for http compression?

How do I gzip compress a string in Python? [closed]

How do I gzip compress a string in Python?

gzip.GzipFile exists, but that's for file objects - what about with plain strings?

Import and insert sql.gz file into database with putty

I want to insert a sql.gz file into my database with SSH. What should I do?

For example I have a database from telephone numbers that name is numbers.sql.gz, what is this type of file and how can I import this file into my database?

How can I Zip and Unzip a string using GZIPOutputStream that is compatible with .Net?

I need an example for compressing a string using GZip in android. I want to send a string like "hello" to the method and get the following zipped string:

BQAAAB+LCAAAAAAABADtvQdgHEmWJSYvbcp7f0r1StfgdKEIgGATJNiQQBDswYjN5pLsHWlHIymrKoHKZVZlXWYWQMztnbz33nvvvffee++997o7nU4n99//P1xmZAFs9s5K2smeIYCqyB8/fnwfPyLmeVlW/w+GphA2BQAAAA==

Then I need to decompress it. Can anybody give me an example and complete the following methods?

private String compressString(String input) {
    //...
}

private String decompressString(String input) {
    //...
}

Thanks,

update

According to scessor's answer, Now I have the following 4 methods. Android and .net compress and decompress methods. These methods are compatible with each other except in one case. I mean they are compatible in the first 3 states but incompatible in the 4th state:

• state 1) Android.compress <-> Android.decompress: (OK)
• state 2) Net.compress <-> Net.decompress: (OK)
• state 3) Net.compress -> Android.decompress: (OK)
• state 4) Android.compress -> .Net.decompress: (NOT OK)

can anybody solve it?

Android methods:

public static String compress(String str) throws IOException {

    byte[] blockcopy = ByteBuffer
            .allocate(4)
            .order(java.nio.ByteOrder.LITTLE_ENDIAN)
            .putInt(str.length())
            .array();
    ByteArrayOutputStream os = new ByteArrayOutputStream(str.length());
    GZIPOutputStream gos = new GZIPOutputStream(os);
    gos.write(str.getBytes());
    gos.close();
    os.close();
    byte[] compressed = new byte[4 + os.toByteArray().length];
    System.arraycopy(blockcopy, 0, compressed, 0, 4);
    System.arraycopy(os.toByteArray(), 0, compressed, 4,
            os.toByteArray().length);
    return Base64.encode(compressed);

}

public static String decompress(String zipText) throws IOException {
    byte[] compressed = Base64.decode(zipText);
    if (compressed.length > 4)
    {
        GZIPInputStream gzipInputStream = new GZIPInputStream(
                new ByteArrayInputStream(compressed, 4,
                        compressed.length - 4));

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        for (int value = 0; value != -1;) {
            value = gzipInputStream.read();
            if (value != -1) {
                baos.write(value);
            }
        }
        gzipInputStream.close();
        baos.close();
        String sReturn = new String(baos.toByteArray(), "UTF-8");
        return sReturn;
    }
    else
    {
        return "";
    }
}

.Net methods:

public static string compress(string text)
{
    byte[] buffer = Encoding.UTF8.GetBytes(text);
    MemoryStream ms = new MemoryStream();
    using (GZipStream zip = new GZipStream(ms, CompressionMode.Compress, true))
    {
        zip.Write(buffer, 0, buffer.Length);
    }

    ms.Position = 0;
    MemoryStream outStream = new MemoryStream();

    byte[] compressed = new byte[ms.Length];
    ms.Read(compressed, 0, compressed.Length);

    byte[] gzBuffer = new byte[compressed.Length + 4];
    System.Buffer.BlockCopy(compressed, 0, gzBuffer, 4, compressed.Length);
    System.Buffer.BlockCopy(BitConverter.GetBytes(buffer.Length), 0, gzBuffer, 0, 4);
    return Convert.ToBase64String(gzBuffer);
}

public static string decompress(string compressedText)
{
    byte[] gzBuffer = Convert.FromBase64String(compressedText);
    using (MemoryStream ms = new MemoryStream())
    {
        int msgLength = BitConverter.ToInt32(gzBuffer, 0);
        ms.Write(gzBuffer, 4, gzBuffer.Length - 4);

        byte[] buffer = new byte[msgLength];

        ms.Position = 0;
        using (GZipStream zip = new GZipStream(ms, CompressionMode.Decompress))
        {
            zip.Read(buffer, 0, buffer.Length);
        }

        return Encoding.UTF8.GetString(buffer);
    }
}

How to enable gzip HTTP compression on Windows Azure dynamic content

I've been trying unsuccessfully to enable gzip HTTP compression on my Windows Azure hosted WCF Restful service which returns JSON only from GET and POST requests.

I have tried so many things that I would have a hard time listing all of them, and I now realise I have been working with conflicting information (regarding old version of azure etc) so think it best to start with a clean slate!

I am working with Visual Studio 2008, using the February 2010 tools for Visual Studio.

So, according to the following link, HTTP compression has now been enabled ..

http://msdn.microsoft.com/en-us/library/ff436045.aspx

... and I've used the advice at the following page (the URL compression advice only), but I get no compression.

http://blog.smarx.com/posts/iis-compression-in-windows-azure

<urlCompression doStaticCompression="true" doDynamicCompression="true" dynamicCompressionBeforeCache="true" />

It doesn't help that I don't know what the difference is between urlCompression and httpCompression. I've tried to find out but to no avail!

Could the fact that the tools for Visual Studio were released before the version of Azure which supports compression be a problem? I read somewhere that with the latest tools, you can choose which version of Azure OS you want to use when you publish ... but I don't know if that's true, and if it is, I can't find where to choose. Could I be using a pre-http enabled version?

I've also tried blowery http compression module, but no results.

Does any one have any up-to-date advice on how to achieve this? i.e. advice that relates to the current version of the Azure OS.

Cheers!

Steven

Update: I edited the above code to fix a type in the web.config snippet.

Update 2: Testing the responses using the whatsmyip URL shown in the answer below is showing that my JSON responses from my service.svc are being returned without any compression, but static HTML pages ARE being returned with gzip compression. Any advice on how to get the JSON responses to compress will be gratefully received!

Update 3: Tried a JSON response larger than 256KB to see if the problem was due to the JSON response being smaller than this as mentioned in comments below. Unfortunately the response isstill un-compressed.

Excluding directory when creating a .tar.gz file

I have a /public_html/ folder, in that folder there's a /tmp/ folder that has like 70gb of files I don't really need.

Now I am trying to create a .tar.gz of /public_html/ excluding /tmp/

This is the command i ran

tar -pczf MyBackup.tar.gz /home/user/public_html/ --exclude "/home/user/public_html/tmp/" 

The tar is still being created, and by doing an "ls -sh" i can see that MyBackup.tar.gz already has about 30gb, and I know for sure that /public_html/ without /tmp/ doesn't have more than 1GB of files.

What did I do wrong?

Does python urllib2 automatically uncompress gzip data fetched from webpage?

I'm using

 data=urllib2.urlopen(url).read()

I want to know:

1. How can I tell if the data at a URL is gzipped?

2. Does urllib2 automatically uncompress the data if it is gzipped? Will the data always be a string?

How can I tell if my server is serving GZipped content?

I have a webapp on a NGinx server. I set gzip on in the conf file and now I'm trying to see if it works. YSlow says it's not, but 5 out of 6 websites that do the test say it is. How can I get a definite answer on this and why is there a difference in the results?

Why can't browser send gzip request?

If webserver can send gzip response, why can't browser sent gzip request?

How to properly handle a gzipped page when using curl?

I wrote a bash script that gets output from a website using curl and does a bunch of string manipulation on the html output. The problem is when I run it against a site that is returning its output gzipped. Going to the site in a browser works fine.

When I run curl by hand, I get gzipped output:

$ curl "http://example.com"

Here's the header from that particular site:

HTTP/1.1 200 OK
Server: nginx
Content-Type: text/html; charset=utf-8
X-Powered-By: PHP/5.2.17
Last-Modified: Sat, 03 Dec 2011 00:07:57 GMT
ETag: "6c38e1154f32dbd9ba211db8ad189b27"
Expires: Sun, 19 Nov 1978 05:00:00 GMT
Cache-Control: must-revalidate
Content-Encoding: gzip
Content-Length: 7796
Date: Sat, 03 Dec 2011 00:46:22 GMT
X-Varnish: 1509870407 1509810501
Age: 504
Via: 1.1 varnish
Connection: keep-alive
X-Cache-Svr: p2137050.pubip.peer1.net
X-Cache: HIT
X-Cache-Hits: 425

I know the returned data is gzipped, because this returns html, as expected:

$ curl "http://example.com" | gunzip

I don't want to pipe the output through gunzip, because the script works as-is on other sites, and piping through gzip would break that functionality.

What I've tried

1. changing the user-agent (I tried the same string my browser sends, "Mozilla/4.0", etc)
2. man curl
3. google search
4. searching stackoverflow

Everything came up empty

Any ideas?

Node.js: Gzip compression?

Am I wrong in finding that Node.js does no gzip compression and there are no modules out there to perform gzip compression? How can a anyone use a web server that has no compression? What am I missing here? Should I try to—gasp—port the algorithm to JavaScript for server-side use?

How to check if a Unix .tar.gz file is a valid file without uncompressing?

I also found this link. But I was wondering if there is any ready made command line solution?

How can I get gzip compression in IIS7 working?

I have installed Static and dynamic compression for IIS7, as well as setting the two web.config values at my application Virtual Folder level. As I understand it, I don't need to enable compression at the server, or site level anymore, and I can manage it on a per folder basis using my web.config file.

I have two settings in my .config file that I have set to customize gzip for my app:

<httpCompression dynamicCompressionDisableCpuUsage="90"
    dynamicCompressionEnableCpuUsage="0">
  <scheme name="gzip" dll="%Windir%\system32\inetsrv\gzip.dll" />
  <dynamicTypes>
    <remove mimeType="*/*"/>
    <add mimeType="*/*" enabled="true" />
  </dynamicTypes>
</httpCompression>
<urlCompression doDynamicCompression="true"
    dynamicCompressionBeforeCache="true" />

However, when I run the application, I can clearly see that gzip is not used, because my page sizes are the same. I am also using YSlow for FireFox, which also confirms that my pages are not being gziped.

What am I missing here? In IIS6 it was a simple matter of specifying the file types, and setting the compression level between 0-10. I don't see the need documented to specify the file types or compression level, since the defaults seem to cover the file types, and I'm not seeing the level anywhere.

How to implement GZip compression in ASP.NET?

I am trying to implement GZip compression for my asp.net page (including my CSS and JS files). I tried the following code, but it only compresses my .aspx page (found it from YSlow)

HttpContext context = HttpContext.Current;
context.Response.Filter = new GZipStream(context.Response.Filter, CompressionMode.Compress);
HttpContext.Current.Response.AppendHeader("Content-encoding", "gzip");
HttpContext.Current.Response.Cache.VaryByHeaders["Accept-encoding"] = true;

The above code is only compressing my .aspx page code (markup) not the CSS and JS files which is included as external files. Please tell me how can I implement GZip compression in ASP.NET using code (because I am on shared hosting server where I don't have access to IIS Server configurations). And also in the above code I am not getting the last two lines, why they are used and what's the purpose of these lines. Please explain!

Thanks