Download Query

gistfile1.j

- (void)doDownloadQuery:(JsonQueryParam *)queryParam withRequest:(id)request andProgressDeleate:(id)progressDelegate
{
	param = [queryParam retain];
	
	NSData   *postData   = nil;
	NSString *postLength = nil;
	NSString *method     = nil;
	NSArray  *command    = nil;
	
	NSString *documentsDir = [NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
	NSString *downloadPath = [documentsDir stringByAppendingString:[NSString stringWithFormat:@"/response.txt", [request integerForKey:@"id"]]];
	
	if ([request isKindOfClass:[NSArray class]])
		command = [request retain];
	else
		command = [[NSArray alloc] initWithObjects:request, nil];
	
	SBJSON   *json = [[SBJSON alloc] init];
	NSString *post = [json stringWithObject:command error:nil];
	
	[command release];
	[json release];
	
	postData   = [post dataUsingEncoding:NSUTF8StringEncoding allowLossyConversion:NO];
	postLength = [NSString stringWithFormat:@"%d", [postData length]];
	method     = @"POST";
	
	ASIHTTPRequest *urlRequest = [ASIHTTPRequest requestWithURL:[NSURL URLWithString:[queryParam url]]];
	[urlRequest addRequestHeader:@"Content-Type" value:@"application/x-json"];
	[urlRequest setTimeOutSeconds:20.0f];
	[urlRequest setRequestMethod:method];
	//	[urlRequest setDidReceiveResponseHeadersSelector:@selector(requestDidReceiveResponseHeader:)];
	
	if (nil != postData)
	{
		[urlRequest appendPostData:postData];
	}
	
	if (nil != postLength)
	{
		[urlRequest setPostLength:[postData length]];
	}
	
	[urlRequest setUsername:[param userName]];
	[urlRequest setPassword:[param password]];
	[urlRequest setValidatesSecureCertificate:NO];
	[urlRequest setDelegate:self];
	[urlRequest setDownloadDestinationPath:downloadPath];
	[urlRequest setDownloadProgressDelegate:progressDelegate];
	[urlRequest setNumberOfTimesToRetryOnTimeout:3];
	[urlRequest setTemporaryFileDownloadPath:[downloadPath stringByAppendingString:@".download"]];
	[urlRequest setAllowResumeForFileDownloads:YES];
	[urlRequest setShowAccurateProgress:YES];
	[urlRequest setShouldPresentCredentialsBeforeChallenge:YES];
	
	[urlRequest startAsynchronous];
}