iphone/ipad development, send info to server

Planning 开发者_开发技巧to configure database on server site, and need to send info submitted by user from iphone/ipad to the server. What is the best way of doing it in the xcode?

ASIHTTPRequest might be a good & easy solution. It lets you upload and download files to and from a server... It implements super-easy, a few lines of code... just see the "setup/install" and "how to use" pages here.

It's up to the pages (php for example) on your server how the information should be sent, but I use NSURLConnection to send information and $_POST['variable'] to read the information server side.

I'll see if I can find an example of how I've used it.

This is my objective-c code to send information to a server:

NSData *data = [NSData dataWithContentsOfFile:localFile];

        // setting up the URL to post to
        NSString *urlString = [[NSString alloc] initWithFormat:@"%@upload.php", ROOT_URL];


        // setting up the request object now
        NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];



        [request setURL:[NSURL URLWithString:urlString]];
        [request setHTTPMethod:@"POST"];

        [urlString release];

        /*
         add some header info now
         we always need a boundary when we post a file
         also we need to set the content type

         You might want to generate a random boundary.. this is just the same 
         as my output from wireshark on a valid html post
         */
        NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
        NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
        [request addValue:contentType forHTTPHeaderField: @"Content-Type"];

        /*
         now lets create the body of the post
         */
        NSMutableData *body = [NSMutableData data];
        [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];    


        NSDateFormatter *format = [[NSDateFormatter alloc] init];
        [format setDateFormat:@"ddMMyyyyHHmmss"];

        NSDate *now = [[NSDate alloc] init];

        NSString *dateString = [format stringFromDate:now];
        [format release];
        [now release];



        NSString *filename = [NSString stringWithFormat:@"recording%@%@.mov", [[UIDevice currentDevice] uniqueIdentifier], dateString];

        filename = [filename stringByAddingPercentEscapesUsingEncoding:NSASCIIStringEncoding];


        [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@\"\r\n", filename] dataUsingEncoding:NSUTF8StringEncoding]];


        [body appendData:[[NSString stringWithString:@"Content-Type: video/quicktime\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
        [body appendData:[NSData dataWithData:data]];
        [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
        // setting the body of the post to the reqeust
        [request setHTTPBody:body];

        // now lets make the connection to the web
        [[[NSURLConnection alloc] initWithRequest:request delegate:self] autorelease];