iOS/iPhone NSMutableURLRequest Example (Objective-C)

NSString *post = @"username=win&password=win123";
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding	allowLossyConversion:YES];
	
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];
	
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:@"https://www.thaicreate/post.php"]];

[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
	[request setHTTPBody:postData];
	
NSURLResponse *response;
NSError *err;
NSData *responseData = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&err];