Re: How to Implement Streamed HTTP Request
Re: How to Implement Streamed HTTP Request
- Subject: Re: How to Implement Streamed HTTP Request
- From: "Tommy Tian" <email@hidden>
- Date: Thu, 20 Apr 2006 13:51:13 -0700
Hi,Daniel
Thanks for reply, I also try this way before my first post. I use
CFStreamCreatePairWithSocket. but not success.
socket1 = socket(AF_UNIX, SOCK_STREAM, 0);
CFStreamCreatePairWithSocket(kCFAllocatorDefault, socket1,
&reqBodyStream, &reqBodyWriteStream);
CFWriteStreamSetClient(reqBodyWriteStream, kNetworkEvents,
reqBodyReadStreamClientCallBack, &ctxt);
CFWriteStreamScheduleWithRunLoop(reqBodyWriteStream,
CFRunLoopGetCurrent(), kCFRunLoopCommonModes);
Boolean bOpen = CFWriteStreamOpen(reqBodyWriteStream);
there is no kCFSteamEventCanAcceptBytes call back, I don't know why.
I have two questions:
1. why you use socketpair to create a pair of sockets.
2. how can you create CFReadStream or CFWriteStream from the native
socket that created by socketpair.
On 4/20/06, Daniel Jalkut <email@hidden> wrote:
> Hi Tommy - I accomplished something like what you're describing,
> though it wasn't trivial.
>
> I ended up using socketpair to create a pair of sockets that I could
> then create a read and write stream for. Then I pass the read stream
> to CFNetwork as the "requestBody" ref for the API below. The socket
> write stream ref is used by my "send data" callback, which gets
> triggered whenever the "can accept bytes" message comes in to the
> client.
>
> I implemented this a couple years ago in a shipping product and it
> has been reliable. But there were some issues raised here about the
> possible unreliability of socketpair based CFStreams. Maybe somebody
> can update us on whether there is still cause for concern.
>
> Daniel
>
> On Apr 17, 2006, at 6:06 PM, Tommy Tian wrote:
>
> > Hi,All
> >
> > I want use CFNetwork to implement streamed http post request.For
> > example send 1024 bytes to HTTPS server every 1 second.
> >
> > I try use
> > extern CFReadStreamRef
> > CFReadStreamCreateForStreamedHTTPRequest(
> > CFAllocatorRef alloc,
> > CFHTTPMessageRef requestHeaders,
> > CFReadStreamRef requestBody)
> >
> > This function seems fit for data of requestBody is ready for send
> > before call this function. (like requestBody from a file, or memory),
> > can't be add any data to requestBody after it been called.
> >
> > how can I send 100 memory bufferes to http server use one streamed
> > http request?of course can NOT merge 100 memory bufferes to one big
> > buffer and send it.
> >
> > Thanks
> > -Tommy
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