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CFReadStreamOpen 550 error

I have a very slow FTP server I am trying to download a file from. Logging in in passive mode can take anywhere between 30 seconds to 2 minutes, but login never fails given enough time.

When I open a CFReadStreamRef for downloading a file via CFReadStreamCreateWithFTPURL and then loop checking CFReadStreamGetStatus immediately after opening it, it first returns CFStreamStatusOpening and a few seconds later fails with kCFStreamStatusError, which I believe is because the FTP server doesn't respond immediately.

Is there a way to set the timeout on the stream's opening so that it will wait longer for really slow servers? I've verified everything else is correct: user name, password, path to file, the stream gets created and opens properly.

Here is my code:

// Make URL to file...

ftpURL = CFURLCreateWithString( kCFAllocatorDefault, kmaCurrentVersionsFIleURLCFString, NULL );
if( ftpURL )
{
// Make Read stream...

readStreamCFRef = CFReadStreamCreateWithFTPURL(kCFAllocatorDefault, ftpURL );
if( readStreamCFRef )
{
// Set properties

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPUserName, CFSTR( "michael1" ) );

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPPassword, CFSTR( "a1a1a1" ) );

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPUsePassiveMode, kCFBooleanTrue );

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPResourceSize, (CFNumberRef)kmaCurrentVersionsFIleSizeInBytes );

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPFetchResourceInfo, kCFBooleanFalse );

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPFileTransferOffset, 0 );

streamPropertySet = CFReadStreamSetProperty( readStreamCFRef, kCFStreamPropertyFTPAttemptPersistentConnection, kCFBooleanTrue );

// Open the stream...

streamOpened = CFReadStreamOpen( readStreamCFRef );
if( streamOpened )
{
// Wait for stream open success

while( ( streamStatus != kCFStreamStatusOpen ) && ( streamStatus != kCFStreamStatusError ) )
{
// Wait for open to complete...

streamStatus = CFReadStreamGetStatus( readStreamCFRef );
}

I get kCFStreamStatusError at this point and CFReadStreamGetError returns 6 and 550 for the domain & error which appears to be "SSL/TLS required on the control channel". Is there anything I else I need to set in order to avoid this error?

Thanks,

Mike
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