SimpleFtpSample - Disable Keep-Alive

PutController.m

- (void)startSend:(NSString *)filePath
{
    BOOL                    success;
    NSURL *                 url;
    
    assert(filePath != nil);
    assert([[NSFileManager defaultManager] fileExistsAtPath:filePath]);
    assert( [filePath.pathExtension isEqual:@"png"] || [filePath.pathExtension isEqual:@"jpg"] );
    
    assert(self.networkStream == nil);      // don't tap send twice in a row!
    assert(self.fileStream == nil);         // ditto

    // First get and check the URL.
    
    url = [[NetworkManager sharedInstance] smartURLForString:self.urlText.text];
    success = (url != nil);
    
    if (success) {
        // Add the last part of the file name to the end of the URL to form the final 
        // URL that we're going to put to.
        
        url = CFBridgingRelease(
            CFURLCreateCopyAppendingPathComponent(
                NULL, (__bridge CFURLRef) url,
                (__bridge CFStringRef) [filePath lastPathComponent], false)
        );
        success = (url != nil);
    }
    
    // If the URL is bogus, let the user know.  Otherwise kick off the connection.

    if ( ! success) {
        self.statusLabel.text = @"Invalid URL";
    } else {

        // Open a stream for the file we're going to send.  We do not open this stream; 
        // NSURLConnection will do it for us.
        
        self.fileStream = [NSInputStream inputStreamWithFileAtPath:filePath];
        assert(self.fileStream != nil);
        
        [self.fileStream open];
        
        // Open a CFFTPStream for the URL.

        self.networkStream = CFBridgingRelease(
            CFWriteStreamCreateWithFTPURL(NULL, (__bridge CFURLRef) url)
        );
        assert(self.networkStream != nil);

        if ([self.usernameText.text length] != 0) {
            success = [self.networkStream setProperty:self.usernameText.text
                                               forKey:(id)kCFStreamPropertyFTPUserName];
            assert(success);
            success = [self.networkStream setProperty:self.passwordText.text
                                               forKey:(id)kCFStreamPropertyFTPPassword];
            assert(success);
        }
        
        // Disable Keep-alive
        [self.networkStream setProperty:(id)kCFBooleanFalse
                                 forKey:(id)kCFStreamPropertyFTPAttemptPersistentConnection];
        
        self.networkStream.delegate = self;
        [self.networkStream scheduleInRunLoop:[NSRunLoop currentRunLoop]
                                      forMode:NSDefaultRunLoopMode];
        [self.networkStream open];

        // Tell the UI we're sending.
        
        [self sendDidStart];
    }
}

http://amay077.posterous.com/ftp-keep-alive