How to avoid delay of webservice(ASIHTTPRequest) response in iPhone? - iphone

Question

In my iPhone app handling web service for storing and retrieving data.Now i am using the following code for web service handling.
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request setPostValue:#"1" forKey:#"id"];
[request setTag:100];
[request setDelegate:self];
[request startAsynchronous];
By this code i got response in 'requestFinished' method.My problem is web service response is very delay(depends upon internet speed).How to make response from web service very fast?Please help me.

Answer 1

I think you want to send json objects by post method..delay is depend on your server(how fast it handle request and response back) but i suggest you to use progress bar and blocks to handle network request..
loadingHUD = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
loadingHUD.labelText = NSLocalizedString(#"Downloading", nil);
loadingHUD.mode=MBProgressHUDModeAnnularDeterminate;
NSString *documentDirectory = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,YES) lastObject];
// Add your filename to the directory to create your saved file location
NSString* destPath = [documentDirectory stringByAppendingPathComponent:[fileName stringByAppendingString:#".mov"]];
NSURL *url = [NSURL URLWithString:mainURL];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
NSMutableURLRequest *request = [httpClient requestWithMethod:#"POST" path:postURL parameters:postRequest];
NSLog(#"postRequest: %#", postRequest);
AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
operation.outputStream = [NSOutputStream outputStreamToFileAtPath:destPath append:NO];
[operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSLog(#"Successfully downloaded file to %#",[[NSString alloc] initWithData:operation.responseData encoding:NSASCIIStringEncoding]);
// Give alert that downloading successful.
NSLog(#"Successfully downloaded file to %#", destPath);
NSLog(#"response: %#", operation.responseString); // Give alert that downloading successful.
// [self.target parserDidDownloadItem:destPath];
loadingHUD.detailsLabelText = [NSString stringWithFormat:#"%# %i%%",#"Downloading",100];
[loadingHUD hide:TRUE];
[DBHelper savePurchaseId:fileName];
[self movieReceived];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error)
{
// Give alert that downloading failed
NSLog(#"Error: %#", error);
// [self.target parserDidFailToDownloadItem:error];
[loadingHUD hide:TRUE];
}];
[operation setDownloadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite)
{
// Progress
progress = ((float)totalBytesWritten) / fileSize;
loadingHUD.progress = progress;
}];
[operation start];
}

Answer 2

We cant control the internet speed due to the different network provider or environment when the client is using your app.
But you can put your web-services to run in background without effecting your main function.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
//code for webservices calling
dispatch_async(dispatch_get_main_queue(), ^{
//functions after your webservices done, for example reload the table or hide the loading bar.
});
});