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"HTML5" Transport Protocol

Kornel Lesiński
September 26, 2011
Technology
3
370

"HTML5" Transport Protocol

HTTP powers all the new fancy HTML5 stuff. Learn how to use, not abuse it.

Video: http://lanyrd.com/2011/lwsmix/scckq/

London Web Standards, January 2011

Kornel Lesiński

September 26, 2011
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Transcript

  1. HyperText Transport Protocol Kornel Lesiński London Web Standards 2011

  2. “HTM L5” AKA N.E.W .T. HTML5 Video CSS3 Server-sent events

    XHTML5 Web Sockets Live Streaming NoSQL DB the actual XMLHttpRequest Web APIs

  3. http://

  4. Server Client Proxy (sometimes)

  5. HTTP/1.1'200'OK Date:'Tue,'18'Jan'2011'20:00:00'GMT' Server:'Apache' ContentAType:'text/html;'charset=utfA8 LastAModified:'Wed,'08'Sep'2010'06:34:43'GMT' ContentALength:'5447' ContentALanguage:'enAGBAxAHixie' Connection:'close' <!DOCTYPE'HTML> <html>

    '<head> ''<title>Web'Hypertext'Application'Technology' Working'Group</title> ''<link'rel="stylesheet"'media="all"'href="/ style/tabbedApages"> ''<link'rel="icon"'href="/images/icon"> '</head> '<body> ''<h1'class="simple"><img'src="/images/logo"' alt="">'Welcome'to'the'WHATWG'community</h1> ''<p'class="byline"><em>Maintaining'and'evolving' HTML'since'2004</em></p>''<p>Want'to'get'involved' and'help'out?'<a'href="http://wiki.whatwg.org/ wiki/What_you_can_do">See'a'list'of'things'for' which'we'need'volunteers</a>'and'jump'in!</p>''<p' class="whatAtoAdo"><a'href="http:// wiki.whatwg.org/wiki/FAQ"><em>FAQ</em>'<span>Get' answers</span>'<span>to'your'questions</span></ a></p>''<p'class="whatAtoAdo"><a'href="http://

  6. HTTP/1.1'200'OK Date:'Tue,'18'Jan'2011'20:00:00'GMT' Server:'Apache' ContentAType:'text/html;'charset=utfA8 LastAModified:'Wed,'08'Sep'2010'06:34:43'GMT' ContentALength:'5447' ContentALanguage:'enAGBAxAHixie' Connection:'close' <!DOCTYPE'HTML> <html>

    '<head> ''<title>Web'Hypertext'Application'Technology' Working'Group</title> ''<link'rel="stylesheet"'media="all"'href="/ style/tabbedApages"> ''<link'rel="icon"'href="/images/icon"> '</head> '<body> ''<h1'class="simple"><img'src="/images/logo"' alt="">'Welcome'to'the'WHATWG'community</h1> ''<p'class="byline"><em>Maintaining'and'evolving' HTML'since'2004</em></p>''<p>Want'to'get'involved' and'help'out?'<a'href="http://wiki.whatwg.org/ wiki/What_you_can_do">See'a'list'of'things'for' which'we'need'volunteers</a>'and'jump'in!</p>''<p' class="whatAtoAdo"><a'href="http:// wiki.whatwg.org/wiki/FAQ"><em>FAQ</em>'<span>Get' answers</span>'<span>to'your'questions</span></ a></p>''<p'class="whatAtoAdo"><a'href="http://

  7. <META HTTP-EQUIV>

  8. HTTP/1.1'200'OK Date:'Tue,'18'Jan'2011'20:00:00'GMT' Server:'Apache' ContentAType:'text/html;'charset=utfA8 LastAModified:'Wed,'08'Sep'2010'06:34:43'GMT' ContentALength:'5447' ContentALanguage:'enAGBAxAHixie' Connection:'close' <!DOCTYPE'HTML> <html>

    '<head> ''<meta'httpAequiv="ContentAType"'content="text/ html;'charset=utfA8"> ''<title>Web'Hypertext'Application'Technology' Working'Group</title> ''<link'rel="stylesheet"'media="all"'href="/ style/tabbedApages"> ''<link'rel="icon"'href="/images/icon"> '</head> '<body> ''<h1'class="simple"><img'src="/images/logo"' alt="">'Welcome'to'the'WHATWG'community</h1> ''<p'class="byline"><em>Maintaining'and'evolving' HTML'since'2004</em></p>''<p>Want'to'get'involved' and'help'out?'<a'href="http://wiki.whatwg.org/ wiki/What_you_can_do">See'a'list'of'things'for' which'we'need'volunteers</a>'and'jump'in!</p>''<p' class="whatAtoAdo"><a'href="http:// wiki.whatwg.org/wiki/FAQ"><em>FAQ</em>'<span>Get'

  9. HTTP/1.1'200'OK Date:'Tue,'18'Jan'2011'20:00:00'GMT' Server:'Apache' ContentAType:'text/html;'charset=utfA8 LastAModified:'Wed,'08'Sep'2010'06:34:43'GMT' ContentALength:'5447' ContentALanguage:'enAGBAxAHixie' Connection:'close' <!DOCTYPE'HTML> <html>

    '<head> ''<meta'httpAequiv="ContentAType"'content="text/ html;'charset=utfA8"> ''<title>Web'Hypertext'Application'Technology' Working'Group</title> ''<link'rel="stylesheet"'media="all"'href="/ style/tabbedApages"> ''<link'rel="icon"'href="/images/icon"> '</head> '<body> ''<h1'class="simple"><img'src="/images/logo"' alt="">'Welcome'to'the'WHATWG'community</h1> ''<p'class="byline"><em>Maintaining'and'evolving' HTML'since'2004</em></p>''<p>Want'to'get'involved' and'help'out?'<a'href="http://wiki.whatwg.org/ wiki/What_you_can_do">See'a'list'of'things'for' which'we'need'volunteers</a>'and'jump'in!</p>''<p' class="whatAtoAdo"><a'href="http:// wiki.whatwg.org/wiki/FAQ"><em>FAQ</em>'<span>Get'

  10. <meta http-equiv> not even close to equivalent

  11. Force download of a file Open Save Cancel

  12. Content&Disposition:,attachment

  13. Cache&Control:,public,,private, ,must&revalidate,,no&validate,,pre& cache=0,,post&check=0,,max&age=&1 Pragma:,cache Transfer&Description:,download Content&Disposition:,attachment; ,filename*=UTF&8''name Content&Type:,downloadpls/kthxbye X&Pragma:,no&cache Expires:,0

    Content&Transfer&Encoding:,binary Content&Disposition:,attachment

  14. /riaa%20bait/Mot%C3%B6rhead.mp3

  15. Content&Type: image/png flickr.com/photos/ veggietothemax/ 201197734

  16. .htaccess AddType,video/webm,.webm AddType,video/ogg,.ogv /etc/mime.types

  17. HTML = text/html XHTML = application/xhtml+xml

  18. http://lists.w3.org/Archives/Public/www-html/2000Sep/0024.html The HTML WG has discussed this issue: the intention

    was to allow old (HTML-only) browsers to accept XHTML 1.0 documents by following the guidelines, and serving them as text/html. Therefore, documents served as text/html should be treated as HTML and not as XHTML. There should be no sniffing of text/html documents to see if they are really XHTML. Note that there are some semantic differences between HTML documents and XHTML documents: there are specific CSS rules that only apply to HTML (and not XHTML), and the DOM has different effects (for instance, the element names are returned in uppercase for HTML, and lower case for XHTML). Best wishes, Steven Pemberton Chair, W3C HTML WG ” “

  19. Firefox Strict MIME type Safari Strict MIME type Opera Strict

    MIME type Internet Explorer Strict MIME type W3C Validator Sniffs DOCTYPE http://www.w3.org/Bugs/Public/show_bug.cgi?id=1500
  20. None
  21. None
  22. None
  23. None

  24. I reckoned HTML5 was at least partly Hixie’s revenge against

    XHTML served as text/html.

  25. RFC 2616

  26. 2011 * not to scale HTTP

  27. Connection:,close

  28. http://pornel.net/1 http://pornel.net/2 HTTP/1.0'200'OK ContentAType:'text/html <div'xmlns="http://www.w3.org/1999/xhtml"' ' ''''''style="color:green"> <span'style="color:red"/> What'color'is'it? </div>

    HTTP/1.0'200'OK ContentAType:'application/xhtml+xml <div'xmlns="http://www.w3.org/1999/xhtml"' ' ''''''style="color:green"> <span'style="color:red"/> What'color'is'it? </div> What'color'is'it? What'color'is'it?