iOS NSURLConnection - Using POST

	NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:@"http://www.example.org/file.php"]
														   cachePolicy:NSURLRequestReloadIgnoringLocalCacheData
													   timeoutInterval:60.0];
	[request setHTTPMethod:@"POST"];
	[request setHTTPBody:[[NSString stringWithFormat:@"value1=%@&value2=%@",
						   [sessionId URLEncodeString],
						   [[UIDevice currentDevice] uniqueIdentifier]] dataUsingEncoding:NSUTF8StringEncoding]];
	[[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:YES];
	NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
	if (connection) {
		receivedData = [[NSMutableData data] retain];
	}
	[tableView reloadData];

//
//  URLEncode.h
//
//  Created by Nicky Gerritsen on 24-03-09.
//  Copyright 2009 __MyCompanyName__. All rights reserved.
//

#import <Foundation/Foundation.h>


@interface NSString (URLEncode)
+ (NSString *)URLEncodeString:(NSString *)string;
- (NSString *)URLEncodeString;
@end

//
//  URLEncode.m
//
//  Created by Nicky Gerritsen on 24-03-09.
//  Copyright 2009 __MyCompanyName__. All rights reserved.
//

#import "URLEncode.h"


@implementation NSString (URLEncode)

// URL encode a string
+ (NSString *)URLEncodeString:(NSString *)string {
    NSString *result = (NSString *)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)string, NULL, CFSTR("% '\"?=&+<>;:-"), kCFStringEncodingUTF8);
    
    return [result autorelease];
}

// Helper function
- (NSString *)URLEncodeString {
	return [NSString URLEncodeString:self];
}

@end