hunchentoot serving manifest files, ie. .appcache files.

[Left Right]

Not exactly answering your question, but if you are looking for push
functionality in browser, then WebSockets might be a better option.
The reason server-sent events exist is by and large due to the
handicapped nature of most popular web-development stack in use today,
such as PHP interpreter that has to be started on every connection by
an HTTP server, such as Apache httpd or ngnx. This means that
traditional setup works in a stateless manner. This is unlike, say,
most Java HTTP servers (Tomcat, JBoss etc) or Python (Twisted,
Tornado), where the setup is normally stateful, meaning that you
wouldn't need to restart the interpreter upon each request, instead,
your server would persist the state until it is shut down. Hunchentoot
belongs to the later category.

Now, because it's not really possible to persist a PHP session across
multiple requests, a technique first known as long polling appeared.
The operating principle was that the server, in response to an HTTP
request would not close the connection immediately, instead it would
keep sending the information, whenever the application state at the
server would demand it. The receiving side (the browser) would listen
to updates on this connection and interpret them as "pushes". Event
stream is a refinement of this scheme.

WebSockets, on the other hand, are plain TCP sockets, which means that
they don't require HTTP wrapping to function. I haven't had much
experience with JavaScript WebSockets, but I used their analogy in
Flash quite a bit. It was a relief not to depend on the bizarre rules
of HTTP protocol and its encodings, headers and so on. So I would
expect the same to hold for WebSockets.

Best,

Oleg

On Fri, Feb 28, 2014 at 11:09 PM, Faruk S. Can <farukscan at gmail.com> wrote:
> I have read in w3schools about usage of server sent events in html5.
> it says:
>
> Set the "Content-Type" header to "text/event-stream"
> Specify that the page should not cache
> Output the data to send (Always start with "data: ")
>
> that is in echo line in php code as echo "data: The server time is:
> {$time}\n\n";
>
> Flush the output data back to the web page
>
> http://www.w3schools.com/html/html5_serversentevents.asp
> examples here are in php for server side. i am using hunchentoot on common
> lisp.
>
>
>
> On Fri, Feb 28, 2014 at 10:27 PM, Faruk S. Can <farukscan at gmail.com> wrote:
>>
>> I
>>   have another question about hunchentoot. Is it possible to use server
>> sent events with hunchentoot, like other html5 improvements mentioned in
>> w3schools-html5 such as app cache, local storage, session storage? as that
>> one related to and depend on the server side support.
>>
>