WebSockets is very faster than xhr. I hope to support of jQuery for WebSockets. - jQuery Development

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Message from discussion WebSockets is very faster than xhr. I hope to support of jQuery for WebSockets.
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Subject: Re: [jquery-dev] Re: WebSockets is very faster than xhr. I hope to support of jQuery for WebSockets.
Date: Wed, 20 Jan 2010 00:37:06 -0500
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If I'm reading you correctly, jQuery support for Web Sockets would be:

1. Feature detection through jQuery.support
2. Close open sockets on unload
3. Keep up a heartbeat with the server
4. Filter JavaScript from incoming data
5. jQuery-like API for sending and receiving on sockets.

(1) would make sense only if there were other support in jQuery, (2) is =
handled by the UA, (3) is protocol-dependent and I'm not sure is even =
necessary, (4) depends on what you're trying to do with data coming out =
of the socket (and data sanitation should be handled by the server in =
most cases). (5) is a different question entirely.

I've definitely seen posts pop up on discussion boards and mailing lists =
asking "how can I rewrite such-and-such JavaScript in jQuery?" While

    if (typeof WebSocket =3D=3D=3D 'object') {
        socket =3D new WebSocket('ws://example.com');
        socket.onmessage =3D handleMessage;
    }

doesn't fit in with existing jQuery code as well as

    if ($.support.sockets) {
        socket =3D $.socket('ws://example.com').receive(handleMessage);
    }

should anyone care? I don't know. The jQuery object always represents a =
collection of DOM elements because jQuery has always been about talking =
to the DOM.

On the other hand, with JSON-encoded responses $.ajax succeeds in =
turning XMLHTTPRequest into a tube that you can shove objects and arrays =
into and get same back. That's solidly outside DOM territory but is a =
well-worn jQuery feature. Automagic response parsing into native types =
could work for Web Sockets as well.

There are more wild and interesting things that *could* be done by =
abstracting a bit =E2=80=94 like the framework maintaining a single =
socket to your app and triggering custom event handlers based on =
metadata in messages =E2=80=94 but it's still way to early to suggest =
putting any of that in jQuery proper. If you want to live on the =
bleeding edge, write some code. Sanding down the API can come once we =
know what the heck we want it to look like.

On Jan 19, 2010, at 10:00 PM, tato wrote:

> Hi Friesen
>=20
> Your code is yes. Please try following.
>=20
> <input type=3D"text" id=3D"test" value=3D"hello!">
> <button =
onclick=3D"ws.send(document.getElementById('test').value)">send</
> button>
>=20
> <script>
> var ws =3D new WebSocket("ws://bloga.jp:80/echo");
> ws.onmessage =3D function(msg) {
>    alert(msg.data)
> };
> </script>
>=20
> You send 'hi!',  You'll receive 'hi!'
> If You send 'Goodbye', then see TCP Packet, You'll receive
> Connection: close
>=20
> eg.
>=20
> GET /echo HTTP/1.1=EF=BD=A5=EF=BD=A5Upgrade: =
WebSocket=EF=BD=A5=EF=BD=A5Connection: Upgrade=EF=BD=A5=EF=BD=A5Host:
> bloga.jp=EF=BD=A5=EF=BD=A5Origin: file://=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5
> tcp 202.215.119.36:80 > 192.168.1.10:1032
> ( omit )
> tcp 192.168.1.10:4964 > 202.215.119.36:80
> =
=EF=BD=A5hi!=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5
> tcp 202.215.119.36:80 > 192.168.1.10:4964
> =
=EF=BD=A5hi!=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5
> tcp 192.168.1.10:4942 > 202.215.119.36:80
> =
=EF=BD=A5Goodbye=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5
> tcp 202.215.119.36:80 > 192.168.1.10:4942
> =
=EF=BD=A5Goodbye=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5
> tcp 202.215.119.36:80 > 192.168.1.10:4942
> HTTP/1.1 200 OK=EF=BD=A5=EF=BD=A5Date: Wed, 20 Jan 2010 00:16:04 =
GMT=EF=BD=A5=EF=BD=A5Server: Apache/
> 2.2.12 (Ubuntu)=EF=BD=A5=EF=BD=A5Content-Length: 0=EF=BD=A5=EF=BD=A5Conn=
ection: close=EF=BD=A5=EF=BD=A5Cont
> ent-Type: =
text/plain=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5
>=20
> This "ws://bloga.jp:80/echo" is a echo server of  mod_pywebsocket's
> sample.
> I have not checked Origin, It will work. if connected to the Internet.
> Even if the local disk.
>=20
>=20
> Well, There are three ways
>=20
>  1.Min support
>  2.Partial support
>  3.Full support
>=20
> I think, case 3:
>             create $.websocket like $.ajax
>             onunload close,keep alive heatbeat,/<script(.|\s)*?\/
> script>/g, "",nosupport flag etc...
>             now, we are looking for tips
>         case 2:
>             Some methods into the $ or $.fn
>             Perhaps many variations
>         case 1:
>             only create ws object
>             eg.
>             $.extend({
>               ws : function (url){
>                 if(WebSocket)return new WebSocket(url);
>               }
>             })
>             but, This is so useless, but in the namespace.
>=20
>=20
>=20
>> WS isn't HTTP
>=20
> Yes, it is. Upgrade: WebSocket from HTTP GET.
>=20
> eg.
>=20
> tcp 192.168.1.4:1715 > 202.215.119.36:80
> GET /echo HTTP/1.1=EF=BD=A5=EF=BD=A5Upgrade: =
WebSocket=EF=BD=A5=EF=BD=A5Connection: Upgrade=EF=BD=A5=EF=BD=A5Host:
> bloga.jp=EF=BD=A5=EF=BD=A5Origin: =
file://=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=
=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=
=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5=EF=BD=
=A5=EF=BD=A5=EF=BD=A5=EF=BD=A5
>=20
>=20
>> You do realize that WS cannot be used in most shared hosting setups?
>=20
> When I started my JavaScript (1996), AddType application/x-
> javascript .js even cannot be used in shared hosting. But, in a few
> years, everywhere
>=20
> I do not know the future, however, if it was useful, I think that
> spread quickly. And perhaps there are advantages to shared hosting
> sever. Because only connection for the server load low. Last week, 40
> in connection load average is 0.00 at Atom CPU Server. Of course a lot
> more testing is required.
>=20
> Thanx
>=20
> On Jan 20, 3:09 am, Daniel Friesen <nadir.seen.f...@gmail.com> wrote:
>> tato wrote:
>>> Thax,
>>=20
>>> First the excuses. This is a discussion about the future.
>>> However, this future is in front of us.
>>=20
>>> Browser's between incompatibility in ajax was need JS Library /
>>> jQuery, and was very helpful. It is, I agree.
>>=20
>>> But even if there is compatibility, jQuery support of xhr is useful.
>>=20
>>> Future browser with WebSockets implemented, I want compatibility
>>> between them.
>>> But I think, even if there is compatibility, jQuery support of ws is
>>> useful too. Rather less code ;-)
>>=20
>> Less code?
>> var ws =3D new WebSocket("ws://example.com");
>> ws.onmessage =3D function(msg) {
>>     // ...
>>=20
>> };
>>=20
>> How much shorter can jQuery possibly make that?
>>=20
>>>> WS is a bi-directional non-HTTP socket which needs a dedicated =
server.
>>=20
>>> It's non-HTTP, but it's on-HTTP too.
>>> I think, WS is a real bi-directional on-HTTP shares available =
socket,
>>> isn't it?
>>=20
>>> I tested on mod_pywebsocket, that is a Web Socket extension for =
Apache
>>> HTTP Server. IETF specification is, The Web Socket default port is =
80
>>> or 443.
>>=20
>>> =
http://tools.ietf.org/html/draft-hixie-thewebsocketprotocol-44#sectio...
>>> http://code.google.com/p/pywebsocket/
>>> =
http://blog.chromium.org/2009/12/web-sockets-now-available-in-google....
>>=20
>> WS' handshake is HTTP-like. The only "HTTP" in WS is a handshake that
>> immediately upgrades the connection to the WebSocket protocol leaving
>> HTTP behind.
>> WS isn't HTTP, it completely breaks the request-response model of =
HTTP,
>> it just encapsulates itself in HTTP. If WebSockets were HTTP =
websocket
>> urls would be http:// not ws://
>> The purpose of the HTTP handshake iirc is primarily so that existing
>> load balancing technologies, proxy servers like varnish, etc... meant
>> for http can still be used (in pipe mode ignoring contents mostly) =
and
>> also so WS doesn't require another port which is default-blocked in =
most
>> cases.
>>=20
>> You do realize that WS cannot be used in most shared hosting setups?
>> Most shared hosts use apache, which as I recall buffers http
>> requests/responses meaning WS won't work on the other side, and the
>> users obviously can't install new modules. To use WS you need some =
sort
>> of VPS, Cloud server, dedicated server, etc... Anything but a shared =
host.
>> That there is likely a good portion of the jQuery userbase.
>>=20
>>>> WS is simply "faster" because it doesn't need all the extra cruft =
in a
>>=20
>>> HTTP call
>>=20
>>> I think so too. XHR requires a lot of headers, and many connections.
>>> WS is Handshake header 'GET / demo HTTP/1.1 ...', only once.
>>=20
>>> WS is so friendly for network and servers. Moreover, "faster" on =
HTTP.
>>=20
>>> With Best regards, for into the good future
>>=20
>>> On 1=E6=9C=8819=E6=97=A5, =E5=8D=88=E5=89=8D2:27, Daniel Friesen =
<nadir.seen.f...@gmail.com> wrote:
>>=20
>>>> I don't like the idea. At this point there is no reason to believe =
that
>>>> any browser with WebSockets implemented will break spec and need a
>>>> compatibility layer (the primary reason jQuery has ajax). I don't =
see
>>>> how jQuery could add any functionality to WebSockets, the api is =
already
>>>> quite nice, not to mention there are a large number of calls and =
parts
>>>> to the api, so there would be a pile of jQuery code just matching =
up the
>>>> api to make calls you could make without jQuery at all.
>>=20
>>>> In any case, comparing WS to XHR in terms of speed is completely
>>>> pointless. XHR is a way to make a HTTP call from JS. WS is a
>>>> bi-directional non-HTTP socket which needs a dedicated server. They =
have
>>>> completely different purposes and use cases, speed is irrelevant to =
a
>>>> comparison. WS is simply "faster" because it doesn't need all the =
extra
>>>> cruft in a HTTP call and it's an open dedicated connection between =
the
>>>> browser and the server that doesn't close after every message.
>>=20
>>>> ~Daniel Friesen (Dantman, Nadir-Seen-Fire) =
[http://daniel.friesen.name]
>>=20
>>>> ...
>>=20
>> ~Daniel Friesen (Dantman, Nadir-Seen-Fire) =
[http://daniel.friesen.name]
> --=20
> You received this message because you are subscribed to the Google =
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> To post to this group, send email to jquery-dev@googlegroups.com.
> To unsubscribe from this group, send email to =
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> For more options, visit this group at =
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>=20
>=20


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