问是否可以将数据流式传输到响应CFHTTPMessageRef？

EN

-(void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode
{    
    /*
         The NSStreamEvent constant can be one of the following:
         NSStreamEventNone              -- No event has occurred.
         NSStreamEventOpenCompleted     -- The open has completed successfully.
         NSStreamEventHasBytesAvailable -- The stream has bytes to be read.
         NSStreamEventHasSpaceAvailable -- The stream can accept bytes for writing.
         NSStreamEventErrorOccurred     -- An error has occurred on the stream.
         NSStreamEventEndEncountered    -- The end of the stream has been reached. 
     */

    switch (eventCode) 
    {
        case NSStreamEventHasBytesAvailable:
            len = [(NSInputStream *)aStream read:buf maxLength:1024];
            if(len) {    
                //_data type is nsmutabledata
                [_data appendBytes:(const void *)buf length:len];
                int bytesRead;
                bytesRead += len;
            } else {
                NSLog(@"No data.");
            }
            break;
        case NSStreamEventErrorOccurred:

            break;
        case NSStreamEventOpenCompleted:

            break;
        case NSStreamEventEndEncountered:

            break;
        case NSStreamEventNone:

            break;
        case NSStreamEventHasSpaceAvailable:

            break;
        default:
            break;
    }
}