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Server Push

Posted on 2001-08-21
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Last Modified: 2013-11-20
Browser makes a request to web server and gets a response. Well, I want if a client gets some page from my server, then server should be able to send data to clients without any request from them, ie Is Server Push available in IIS server?

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Question by:ahmadrazakhan
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krispols earned 50 total points
ID: 6413053
Don't forget that IIS is client server based on HTTP protocol. IIS waiting tcp connection and answer them. After the answer the tcp connection no longer exist. A push method works based on a connection that exist until the client disconnect or the server has a time out for the answer, like FTP.
Furthermore, a push system is based on the fact that the client computer have the client software of your application.
The solution is that you must build a client side solution in java (cross platform) and a server solution that comunicate with an another port than 80.
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by:ahmadrazakhan
ID: 6413202
I want that my web server should respond without request, isnt it possible? Actually i cant write my own client, i have to communicate with Nokia Wap Server.
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by:krispols
ID: 6416526
No, is not. As I explained, IIS wait for connection, but can't send information to the client without a request or without a client tools for that.
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Expert Comment

by:ShaunWilde
ID: 6416612
> I want that my web server should respond without request, isnt it possible

but who to? most people use firewalls etc so do not have an IP address that can be contacted directly - all the WAP phones for a provider will appear to be from the same location(s) - also a lot of firewalls will block incoming HTTP eg they will be configured for OUT only. Have a look at Jabber (www.jabber.org) - it uses xml and will tunnel via http - you will need a client app to initiate the connection and then you can push data back and forth - they also have java clients which could be useful - you could also write your own server which will never kill the connection and if you necer send the </HTML> then some fiewalls won't either (unless they timeout) however that doesn't stop the client from doing so.

the other way is to have a clinet app (java) that will perioidcally poll the server and update the webpage dynamically - this is how most tickers work
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by:amp072397
ID: 6789600
ahmadrazakhan:

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thanks!
amp
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by:ahmadrazakhan
ID: 6793262
No answer to fulfil my needs
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by:Netminder
ID: 6834781
Admin notified of user neglect. Force/accepted by

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