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Unable to get concurrent CFHTTPStreams...
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Unable to get concurrent CFHTTPStreams...


  • Subject: Unable to get concurrent CFHTTPStreams...
  • From: Michael Ledford <email@hidden>
  • Date: Sun, 22 Feb 2009 19:24:16 -0500

Hello,

I have written a cocoa object that acts as a 'network operation' and uses a CFReadStreamRef as created by either CFReadStreamCreateForHTTPRequest() or CFReadStreamCreateForStreamedHTTPRequest(). I am, for the moment, not using persistent HTTP connections.

I setup the client context and read stream client to look similar to this...

CFStreamClientContext clientContext = {0, self, NULL, NULL, NULL};
CFReadStreamSetClient(httpOperationReadStream, (kCFStreamEventOpenCompleted | kCFStreamEventHasBytesAvailable | kCFStreamEventEndEncountered | kCFStreamEventErrorOccurred), ReadStreamClientCallBack, &clientContext);


The read stream client callback is a static function of the class that calls into the correct operation instance using the info context passed into the callback.

I then schedule the stream on the main run loop like this...

CFReadStreamScheduleWithRunLoop(httpOperationReadStream, CFRunLoopGetMain(), kCFRunLoopCommonModes);

Then of course I open the stream...

CFReadStreamOpen(httpOperationReadStream);

I will put several of these operations objects in flight one after another, however only one stream is ever active at a time as shown by logging and other network monitoring utilities. I am fairly sure that I should be able to have several of these in flight at a time without creating multiple threads. Therefore I am wondering, what am I doing wrong? Why might I only be able to get one HTTP operation active at a time?

Thanks,
Michael
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