Re: NSURLConnection and buffering
Re: NSURLConnection and buffering
- Subject: Re: NSURLConnection and buffering
- From: "Arvind Jain" <email@hidden>
- Date: Sat, 5 Jul 2008 07:23:42 -0700
>
> Date: Fri, 4 Jul 2008 19:22:30 -0400
> From: "Michael Ash" <email@hidden>
> Subject: Re: NSURLConnection and buffering
> To: "Cocoa Developers" <email@hidden>
> Message-ID:
> <email@hidden>
> Content-Type: text/plain; charset=UTF-8
>
> On Fri, Jul 4, 2008 at 4:34 AM, Arvind Jain <email@hidden> wrote:
> > I'm using NSURLConnection to download a web page which is served from a
> > server that uses HTTP 1.1 and chunked encoding. The web page consists of
> 2
> > sections; the server sends the first section which is about 300 bytes
> > immediately, and has to do some processing for 30 seconds before it sends
> > the next chunk which is larger (10KB).
> >
> > I'd like to display the first 300 bytes immediately, but my delegate
> method
> > connection::didReceiveData is not called until after the second chunk is
> > sent by the server (that is 30 seconds later). It appears there is a
> minimum
> > buffer size in the NSURLConnection class - it won't give the bytes to me
> > until it has accumulated that many bytes.I verified this by increasing
> the
> > size of the first chunk. If is is 2KB or so, then I get the
> didReceiveData
> > call right after the server has sent the first chunk.
> >
> > I noticed that Safari on Macbook pro has the same behavior. It won't
> render
> > the first chunk until after the second one is sent.
> > Any way to tell NSURLConnection to not buffer and send me bytes
> immediately?
>
> Are you sure that the data is even being sent when you want it to be?
> Until you've verified that it's making it onto the network by looking
> at the traffic with a network sniffer, I would hesitate to start
> assigning blame and debugging anything.
>
> Mike
>
>
Yes the server has sent the bytes to the client. I did do a tcpdump to
verify. Also, Firefox was able to render the first chunk whereas Safari as
well as my application couldn't.
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