mime - How to specify multipart HTML code so it's downloaded with 1 GET request -

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i want render web page using content type multipart, sniffer logs show multiple requests images on web page.

here test code:

<!doctype html> <html> <head>     <title>multipart/form-data</title>     <header><h2>testing multipart/form-data</h2></header>     <meta http-equiv="content-type" content="multipart/related; charset=iso-8859-1"/> </head> <body>     text outside &lt;form&gt; tag.     <form          enctype="multipart/form-data"            method="post"         action="/php/showpostget.php" >   <!-- enctype attribute can used if method="post". -->          text inside &lt;form&gt; tag.<br />         <input type="submit" value='test'/><br>         <form enctype="multipart/text/plain">             name1: <input type="text" name="fname" value="abc"><br>             name2: <input type="text" name="lname" value="123"><br>         </form>         <br />         <img src="/images/arrow_left.jpg"  alt="left">         <img src="/images/arrow_right.jpg" alt="right">         <img src="/images/arrow_up.jpg"    alt="up">         <img src="/images/arrow_down.jpg"  alt="down">         <br/>     </form> </body> <br/> </html>

when refresh on web page, expect see single request, see multiple requests (one main page , 1 ea image file). this:

7 10.738337   163.64.287.173         10.235.5.146          http     /mdg/html/fileupload/andy/multipart-form-data.html http/1.1  9 10.739553   10.235.5.146          163.64.287.173         http     http/1.1 200 ok (text/html)  content-type: text/html; charset=iso-8859-1\r\n  <meta http-equiv="content-type" content="multipart/form-data; charset=iso-8859-1"/>  17 12.945487   163.64.287.173         10.225.57.136          http     /images/arrow_left.jpg http/1.1  19 12.946704   10.225.57.136          163.64.287.173         http     http/1.1 200 ok (jpeg jfif image)  content-type: image/jpeg\r\n  28 14.816313   163.64.287.173         10.225.57.136          http     /images/arrow_right.jpg http/1.1  30 14.817529   10.225.57.136          163.64.287.173         http     http/1.1 200 ok (jpeg jfif image)  content-type: image/jpeg\r\n  41 17.196125   163.64.287.173         10.225.57.136          http     /images/arrow_up.jpg http/1.1  43 17.197342   10.235.5.146          163.64.287.173         http     http/1.1 200 ok (jpeg jfif image)  content-type: image/jpeg\r\n  51 19.060141   163.64.287.173         10.225.57.136          http     /images/arrow_down.jpg http/1.1  53 19.061358   10.225.57.136          163.64.287.173         http     http/1.1 200 ok (jpeg jfif image)  content-type: image/jpeg\r\n

i expected see 1 request followed several ok/continuation messages (with 'boundary=' data). (from web site):

901 15:36:40.100491 10.277.7.10 72.253.197.19 http /app/wt/default.aspx?vtbl=1&debugds=320&vzmw3=vzmw3 http/1.1

903 15:36:40.317813 72.253.197.19          10.277.7.10           http     http/1.1 200 ok  content-type: multipart/mixed; boundary=next.part.8412f441-e4ea-4554-8400-9a003df2f78f\r\n  content-type: multipart/mixed; boundary=next.part.8412f441-e4ea-4554-8400-9a003df2f78f\r\n  mime multipart media encapsulation, type: multipart/mixed, boundary: "next.part.8412f441-e4ea-4554-8400-9a003df2f78f"  first boundary: --next.part.8412f441-e4ea-4554-8400-9a003df2f78f\r\n  content-type: text/html; charset=utf-8\r\n  905 15:36:40.319315 63.64.187.229         97.253.137.46         http     http/1.1 200 ok  content-type: multipart/mixed; boundary=next.part.8412f441-e4ea-4554-8400-9a003df2f78f\r\n  content-type: multipart/mixed; boundary=next.part.8412f441-e4ea-4554-8400-9a003df2f78f\r\n  906 15:36:40.320116 72.253.197.19          10.247.7.10           http     continuation

you won't able in html. content-type: multipart/... http header, whereas html tag <meta http-equiv="content-type"> supports limited values defined here: http://www.w3.org/tr/html-markup/meta.http-equiv.content-type.html#meta.http-equiv.content-type

a specially formatted string providing character encoding name. value: following parts, in following order:

  1. the literal string "text/html;".
  2. optionally, 1 or more space characters.
  3. the literal string "charset=".
  4. one of following:
    • for documents in html syntax: character encoding name.
    • for documents in xml syntax: case-insensitive match string "utf-8".

in other words, since html document, allowed content-type "text/html".

you want specify "multipart/mixed" in http headers on server side (e.g. using php header() or similar). then, looks browsers support are/were firefox/netscape; see how download multiple files 1 http request?


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