Problem With CFWriteStreamRef

[ccramer]

Is anybody out there having any problems with opening a write stream connected to an FTP server? I can get a directory listing fine, but the code which has been working to create and open a CFWriteStreamRef is failing when trying to write to a local directory from an ftp server.
It worked fine until OS4.0 and it also works on the 4.0 simulator.

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

NSString *documents = [[paths objectAtIndex:0] stringByAppendingString:@"/Inbox/"];




NSMutableArray *files_to_download = [[NSMutableArray alloc] init]; //stores files

NSString *downloadAddress = @"ftp://><an address>/Downloads/";
                         

//try and get listing

Boolean status = MySimpleDirectoryListing((CFStringRef)downloadAddress, CFSTR("userName"), CFSTR("password"));
//***Works Fine and Returns Listing***
if (!status) NSLog(@"(MySimpleDirectoryListing) ERROR: failed to connect");

if (status) CFRunLoopRun();

NSInteger i = 0;

NSInteger count = files_to_download.count;

for(i;i<count;i++)
{
     //be sure to append the directory and the filename to the address.

     NSString *address = [@"ftp://><an address>/" stringByAppendingString:[@"/Downloads/" stringByAppendingString:(NSString *)[files_to_download objectAtIndex:i]]];
     NSURL *u = [[NSURL alloc] initFileURLWithPath:documents];

     status = iDownload((CFStringRef)address, (CFURLRef)u, CFSTR("userName"), CFSTR("password"));

     [u release];

     if (!status) NSLog([@"(iDownload) ERROR: failed to download " stringByAppendingString:address]);

     if (status) CFRunLoopRun();
}

static Boolean

iDownload(CFStringRef urlString, CFURLRef destinationFolder, CFStringRef username, CFStringRef password)

{

    CFReadStreamRef        readStream;

    CFWriteStreamRef       writeStream;

    CFStreamClientContext  context = { 0, NULL, NULL, NULL, NULL };

    CFURLRef               downloadPath, downloadURL;

    CFStringRef            fileName;

    Boolean                success = true;

    iStreamInfo           *streamInfo;



    downloadURL = CFURLCreateWithString(kCFAllocatorDefault, urlString, NULL);

    /* Copy the end of the file path and use it as the file name. */

    fileName = CFURLCopyLastPathComponent(downloadURL);

     assert(downloadURL != NULL);     

    /* Create the downloadPath by taking the destination folder and appending the file name. */

    downloadPath = CFURLCreateCopyAppendingPathComponent(kCFAllocatorDefault, destinationFolder, fileName, false);

     CFRelease(fileName);

     assert(downloadPath != NULL);

    /* Create a CFWriteStream for the file being downloaded. */

    writeStream = CFWriteStreamCreateWithFile(kCFAllocatorDefault, downloadPath);

    CFRelease(downloadPath);

     assert(writeStream != NULL);

     

    /* CFReadStreamCreateWithFTPURL creates an FTP read stream for downloading from an FTP URL. */

    readStream = CFReadStreamCreateWithFTPURL(kCFAllocatorDefault, downloadURL);

    CFRelease(downloadURL);

    assert(readStream != NULL);


    iStreamInfoCreate(&streamInfo, readStream, writeStream);

    context.info = (void *)streamInfo;


    success = CFWriteStreamOpen(writeStream);     

    if (success) {
               
          //read the stream using callback
    } 
    else {

        fprintf(stderr, "CFWriteStreamOpen failed\n");

        iStreamInfoDestroy(streamInfo);

    }     

    return success;

}

#define kMyBufferSize  32768

typedef struct iStreamInfo {

     

    CFWriteStreamRef  writeStream;        

    CFReadStreamRef   readStream;               

    SInt64            fileSize;                 

    UInt32            totalBytesWritten;     

    UInt32            leftOverByteCount;        

    UInt8             buffer[kMyBufferSize];

    CFDictionaryRef   proxyDict;

     

} iStreamInfo;


static void

iStreamInfoCreate(iStreamInfo ** info, CFReadStreamRef readStream, CFWriteStreamRef writeStream)

{

    iStreamInfo * streamInfo;



    streamInfo = malloc(sizeof(iStreamInfo));



    streamInfo->readStream        = readStream;

    streamInfo->writeStream       = writeStream;

    streamInfo->fileSize          = 0;

    streamInfo->totalBytesWritten = 0;

    streamInfo->leftOverByteCount = 0;

     

    *info = streamInfo;

}

[ccramer]

Maybe it is something in the new OS that blocks this stream?

[ccramer]

It seems as though I am having problems saving to subdirectories that I created within the Documents directory. I couldn't stream to the subdirectory so I decided to stream to the documents directory and then try to copy the files using filemanager. No such luck. I can write a file, such as a plist, to the directories. I have checked paths and made sure directories exist. Any ideas on why this broke in IPhone OS 4.0?