ASINetworkQueue - not calling my selectors.

DownloadCatalogOperation.h

#import <Foundation/Foundation.h>

@class ASINetworkQueue, Catalog, ASIHTTPRequest;

@interface DownloadCatalogOperation : NSOperation {
  /* queue for downloading many assets in paralel */
  ASINetworkQueue* networkQueue;
  
  NSString* tmpDownloadPath;
  Catalog* catalog;
  int version;
}

- (void) requestFinished:(ASIHTTPRequest *)request;

- (void) requestFailed:(ASIHTTPRequest *)request;

- (void) queueFinished:(ASINetworkQueue *)queue;
@end

DownloadCatalogOperation.m

#import "DownloadCatalogOperation.h"
#import "Files.h"
#import "ApplicationPaths.h"
#import "Catalog.h"
#import "CatalogEntry.h"
#import "Server.h"
#import "ASINetworkQueue.h"
#import "ASIHTTPRequest.h"
#import "DDLog.h"

const static int ddLogLevel = LOG_LEVEL_VERBOSE;

#define TMP_CATALOG @"tmpCatalog"
#define MAX_CONCURRENT_DOWNLOADS 5

@implementation DownloadCatalogOperation

// 
// Removed some parts of the class that aren't relevant to ASINetworkQueue
//

- (void) download:(NSString*)filename {
  ASIHTTPRequest* request = [ASIHTTPRequest requestWithURL:serverUrlOfCatalogResource(filename)];
  [request setDownloadDestinationPath:[tmpDownloadPath stringByAppendingPathComponent:filename]];
  [networkQueue addOperation:request];
}


- (void) requestFinished:(ASIHTTPRequest *)request {
  // This method doesn't get called
  DDLogVerbose(@"Request finished, %d more to go...  %@", [networkQueue requestsCount], request);
}

- (void) requestFailed:(ASIHTTPRequest *)request {
  // This method doesn't get called
  DDLogError(@"Failed to download one of the URLs, there were %d files remaining. %@", [networkQueue requestsCount], [request error]);
}

- (void) queueFinished:(ASINetworkQueue *)queue {
  // This method doesn't get called
  DDLogVerbose(@"All assets fetched successfully at %@", queue);
}

- (void) main {
  
  // First download all to tmp
  [networkQueue reset];

  // Create a tmp path
  tmpDownloadPath = [self createTmp];
  for (NSString* resource in [catalog collectAllResourceNames]) {
    [self download:resource];
  }
  [networkQueue go];
  
  [networkQueue waitUntilAllOperationsAreFinished];

}

- (id)init {
  self = [super init];
  if (self) {
    networkQueue = [[ASINetworkQueue queue] retain];
    [networkQueue setMaxConcurrentOperationCount:MAX_CONCURRENT_DOWNLOADS];
    [networkQueue setDelegate:self];
    [networkQueue setRequestDidFinishSelector:@selector(requestFinished:)];
    [networkQueue setRequestDidFailSelector:@selector(requestFailed:)];
    [networkQueue setQueueDidFinishSelector:@selector(queueFinished:)];
  }
  return self;
}

- (void)dealloc {
  [networkQueue release];
  [catalog release];
  [super dealloc];
}


@end