Using the `-d` (`--debug`) option I see it set:

    ---request begin---
    GET / HTTP/1.0
    User-Agent: Wget/1.12 (cygwin)
    Accept: */*
    Host: www.uml.edu
    Connection: Keep-Alive
    
    ---request end---



that&#39;s easy to check: write a script that displays the sent headers or dump headers with your web server. 

with PHP you need `print_r(getallheaders());`

    Array
    (
        [User-Agent] =&gt; Wget/1.11.4
        [Accept] =&gt; */*
        [Host] =&gt; localhost
        [Connection] =&gt; Keep-Alive
    )

Tested with GNU Wget 1.11.4.



I&#39;m developing my first R package (using R 2.13, Ubuntu 10.10).  Let&#39;s call it *foo* and let&#39;s say that the code in the R/ directory begins with the line *library(bar)*, where *bar* is an existing package, in CRAN, on which *foo* depends. My DESCRIPTION file contains the line:

    Depends: bar

When package *foo* is ready for testing, I install it locally using:

    R CMD INSTALL foo_1.0.tar.gz

However, if *bar* is not installed, I see:

    ERROR: dependency ‘bar’ is not available for package ‘foo’

Obviously, if my *foo* were installed from CRAN using install.packages(), *bar* would be installed at the same time.  So my question is: how can I ensure that CRAN package *bar* is installed, if required, when I install my package *foo* using R CMD INSTALL?  Is this a job for a configuration script?

How to install dependencies when using &quot;R CMD INSTALL&quot; to install R packages?

We have a lot of setup JS code that defines panels, buttons, etc that will be used in many other JS files.

Typically, we do something like:

**grid.js**

    var myGrid = .....


**combos.js**

    var myCombo = .....

Then, in our application code, we:

**application.js**

    function blah() {
        myGrid.someMethod()
    }

**someother.js**

    function foo() {
        myCombo.someMethod();
        myGrid.someMethod();
    }

So, should we be using the `var myGrid` or is better to use `window.myGrid`

What&#39;s the difference?


Should I use window.variable or var?

I know that you can manually set some headers with the `--header` option, but I want to know what headers it sends without interaction.

What headers are automatically sent by wget?

<p>I know that you can manually set some headers with the <code>--header</code> option, but I want to know what headers it sends without interaction.</p>


Since on an iPad we cannot edit the hosts file (without jailbreaking), how can we arbitrarily redirect web traffic to another url?

This would be important for something such as developing a website that uses a Virtual Host configuration where you want to redirect to a development machine.

(This is related to this question: [Can I edit an iPad&#39;s host file?][1])


  [1]: https://stackoverflow.com/questions/4783923/can-i-edit-an-ipads-host-file

How can I redirect HTTP requests made from an iPad?

What is the difference between creating cookies on the server and on the client? Are these called server side cookies and client side cookies? Is there a way to create cookies that can only be read on the server or on the client?

What is the difference between server side cookie and client side cookie?

Is there a reliable way to get a timezone from client browser? I saw the following links but I want a more robust solution. 

[Auto detect a time zone with JavaScript](http://www.onlineaspect.com/2007/06/08/auto-detect-a-time-zone-with-javascript/)

[Timezone detection in JavaScript](https://bitbucket.org/pellepim/jstimezonedetect/wiki/Home)



get client time zone from browser

I&#39;m reading the docs at http://nodejs.org/docs/v0.4.0/api/http.html#http.request, but for some reason, I can&#39;t seem to to actually find the body/data attribute on the returned, finished  response object.  

    &gt; var res = http.get({host:&#39;www.somesite.com&#39;, path:&#39;/&#39;})

    &gt; res.finished
    true

    &gt; res._hasBody
    true

It&#39;s finished (http.get does that for you), so it should have some kind of content. But there&#39;s no body, no data, and I can&#39;t read from it. Where is the body hiding?

Where is body in a nodejs http.get response?

In HTTP you can specify in a request that your client can accept specific content in responses using the `accept` header, with values such as `application/xml`. The content type specification allows you to include parameters in the content type, such as `charset=utf-8`, indicating that you can accept content with a specified character set.

There is also the `accept-charset` header, which specifies the character encodings which are accepted by the client.

If both headers are specified and the `accept` header contains content types with the charset parameter, which should be considered the superior header by the server?

e.g.:

    Accept: application/xml; q=1,
            text/plain; charset=ISO-8859-1; q=0.8
    Accept-Charset: UTF-8

I&#39;ve sent a few example requests to various servers using Fiddler to test how they respond:

**Examples**

**W3**

Request

    GET http://www.w3.org/ HTTP/1.1
    Host: www.w3.org
    Accept: text/html;charset=UTF-8
    Accept-Charset: ISO-8859-1

Response

    Content-Type: text/html; charset=utf-8

**Google**

Request

    GET http://www.google.co.uk/ HTTP/1.1
    Host: www.google.co.uk
    Accept: text/html;charset=UTF-8
    Accept-Charset: ISO-8859-1

Response

    Content-Type: text/html; charset=ISO-8859-1

**StackOverflow**

Request

    GET http://stackoverflow.com/ HTTP/1.1
    Host: stackoverflow.com
    Accept: text/html;charset=UTF-8
    Accept-Charset: ISO-8859-1

Response

    Content-Type: text/html; charset=utf-8

**Microsoft**

Request

    GET http://www.microsoft.com/ HTTP/1.1
    Host: www.microsoft.com
    Accept: text/html;charset=UTF-8
    Accept-Charset: ISO-8859-1

Response 

    Content-Type: text/html

There doesn&#39;t seem to be any consensus around what the expected behaviour is. I am trying to look surprised.

Accept and Accept-Charset - Which is superior?

I&#39;m using Amazon S3 to serve static assets for my website. I want to have browsers cache these assets for as long as possible. What meta-data headers should I include with my assets

    Cache-Control: max-age=???

Max value for cache control header in HTTP

I&#39;ve seen `application/csv` used and also `text/csv`.

Is there a difference?  Does it matter which as long as the request matches something that&#39;s available?  Are they interchangeable?

What MIME type should I use for CSV?

I have inherited some code that will eventually be part of an API call. Based on the existing code, the call is a post to retrieve JSON code with an access_token. While this would normally be simple and like every other API out there, this code requires that there be a customized httpheader field for the client secret. 

I was able to make this work in Objective C with URLRequest, etc. but now that I am creating the call for a web component, I have been roadblocked. 

I am using a pretty standard jquery post
     
            $.post(&#39;https://url.com&#39;, 
            {access_token:&#39;XXXXXXXXXXXXXXXXXXX&#39;,
             function(data){
               console.info(data);
             }, &#39;json&#39;);

With a HTTP-EQUIV in the header. But the post never retrieves data and the server itself doesn&#39;t recognized that any call was made (even an incomplete one).

I may have to scrap this code and start over, but if anyone has encountered this problem before, please offer any insight. 

JSON Post with Customized HTTPHeader Field

I use Ubuntu and installed [cURL][1] on it. I want to test my Spring REST application with cURL. I wrote my POST code at the Java side. However, I want to test it with cURL. I am trying to post a JSON data. Example data is like this:

    {&quot;value&quot;:&quot;30&quot;,&quot;type&quot;:&quot;Tip 3&quot;,&quot;targetModule&quot;:&quot;Target 3&quot;,&quot;configurationGroup&quot;:null,&quot;name&quot;:&quot;Configuration Deneme 3&quot;,&quot;description&quot;:null,&quot;identity&quot;:&quot;Configuration Deneme 3&quot;,&quot;version&quot;:0,&quot;systemId&quot;:3,&quot;active&quot;:true}

I use this command:

    curl -i \
        -H &quot;Accept: application/json&quot; \
        -H &quot;X-HTTP-Method-Override: PUT&quot; \
        -X POST -d &quot;value&quot;:&quot;30&quot;,&quot;type&quot;:&quot;Tip 3&quot;,&quot;targetModule&quot;:&quot;Target 3&quot;,&quot;configurationGroup&quot;:null,&quot;name&quot;:&quot;Configuration Deneme 3&quot;,&quot;description&quot;:null,&quot;identity&quot;:&quot;Configuration Deneme 3&quot;,&quot;version&quot;:0,&quot;systemId&quot;:3,&quot;active&quot;:true \
        http://localhost:8080/xx/xxx/xxxx

It returns this error:

    HTTP/1.1 415 Unsupported Media Type
    Server: Apache-Coyote/1.1
    Content-Type: text/html;charset=utf-8
    Content-Length: 1051
    Date: Wed, 24 Aug 2011 08:50:17 GMT

The error description is this:

&gt; *The server refused this request because the request entity is in a format not supported by the requested resource for the requested method ().*

Tomcat log:
    &quot;POST /ui/webapp/conf/clear HTTP/1.1&quot; 415 1051

What is the right format of the cURL command?

This is my Java side `PUT` code (I have tested GET and DELETE and they work):

    @RequestMapping(method = RequestMethod.PUT)
    public Configuration updateConfiguration(HttpServletResponse response, @RequestBody Configuration configuration) { //consider @Valid tag
        configuration.setName(&quot;PUT worked&quot;);
        //todo If error occurs response.sendError(HttpServletResponse.SC_NOT_FOUND);
        return configuration;
    }


  [1]: https://en.wikipedia.org/wiki/CURL

How do I POST JSON data with cURL?

I&#39;m wondering if there is a way to check ahead of time the size of a file I might download via `wget`? I know that using the `--spider` option tells me if a file exists or not, but I&#39;m interested in finding the size of that file as well.

get file size of a file to wget before wget-ing it?

I am getting a bunch of relatively small pages from a website and was wondering if I could somehow do it in parallel in Bash. Currently my code looks like this, but it takes a while to execute (I think what is slowing me down is the latency in the connection).

    for i in {1..42}
    do
        wget &quot;https://www.example.com/page$i.html&quot;
    done

I have heard of using xargs, but I don&#39;t know anything about that and the man page is very confusing.  Any ideas? Is it even possible to do this in parallel? Is there another way I could go about attacking this?

Parallel wget in Bash

How to use `wget` and get all the files from website?

I need all files except the webpage files like HTML, PHP, ASP etc.  

How to download all files (but not HTML) from a website using wget?

For example, running `wget https://www.dropbox.com` results in the following errors:

    ERROR: The certificate of `www.dropbox.com&#39; is not trusted.
    ERROR: The certificate of `www.dropbox.com&#39; hasn&#39;t got a known issuer.


How do I fix certificate errors when running wget on an HTTPS URL in Cygwin?

I&#39;m using Wget to make http requests to a fresh web server.  I am doing this to warm the MySQL cache.  I do not want to save the files after they are served.

    wget -nv -do-not-save-file $url

Can I do something like `-do-not-save-file` with wget?

Content Type	Original Author	Original Content on Stackoverflow
Question	Bryan Agee	View Question on Stackoverflow
Solution 1 - Http	ribram	View Answer on Stackoverflow
Solution 2 - Http	Karoly Horvath	View Answer on Stackoverflow

What headers are automatically sent by wget?

Http Problem Overview

Http Solutions

Solution 1 - Http

Solution 2 - Http

Should I use window.variable or var?

How to install dependencies when using "R CMD INSTALL" to install R packages?

Attributions