Re: [OSX Core Foundation]How can I asynchronously upload a file though HTTP and get a callback called while sending bytes of the stream?
Re: [OSX Core Foundation]How can I asynchronously upload a file though HTTP and get a callback called while sending bytes of the stream?
- Subject: Re: [OSX Core Foundation]How can I asynchronously upload a file though HTTP and get a callback called while sending bytes of the stream?
- From: "Quinn \"The Eskimo!\"" <email@hidden>
- Date: Thu, 2 Dec 2010 16:10:53 +0000
On 2 Dec 2010, at 12:46, Rémy Saissy wrote:
> as shown in SampleURLConnection, I created a CFWriteStreamRef using a
> CFSocket previously created and connected to the server and configured
> with
> CFSocketSetSocketFlags(sock, kCFSocketAutomaticallyReenableWriteCallBack);
> CFSocketEnableCallBacks(sock, kCFSocketWriteCallBack);
> event though there is no Write callback defined at socket level.
OK, I've very confused by this. SimpleURLConnections doesn't use CFSocket at all, and there really should be no need to use CFSocket to solve this problem (except insofar as the system uses CFSocket as the underlying substrate of CFNetwork).
Earlier I wrote:
> o large transfers -- If you're uploading a plain file, you can create a stream for that file using either CF or NSStream and then set it as the content body using -[NSMutableURLRequest setHTTPBodyStream:].
>
> If the file needs some sort of header or trailer you'll have to use a bound pair of streams, as illustrated by the PostController class in the SimpleURLConnections sample code (which is for iOS, but the technology works identically on Mac OS X).
You only need to mess around with a bound pair if you are not sending a simple flat file. So, what data are you trying to put into the HTTP body?
S+E
--
Quinn "The Eskimo!" <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware
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