Minimal Objective-C HTTP client for testing UTF8 decoding issues

main.c

#import <Foundation/Foundation.h>
#import <Foundation/NSURLRequest.h>

int main (void)
{
    NSAutoreleasePool *pool = [NSAutoreleasePool new];

    // Robert Hodgin's tweet with emoji:
    // https://twitter.com/#!/flight404/statuses/165946274644885504
//    NSURL* nsUrl = [NSURL URLWithString:@"https://api.twitter.com/1/statuses/show.json?id=165946274644885504&include_entities=true"];
    NSURL* nsUrl = [NSURL URLWithString:@"http://localhost:1337/1/statuses/show/165946274644885504.json"];
    
    NSMutableURLRequest* req = [[NSMutableURLRequest alloc] initWithURL:nsUrl];
    [req setHTTPMethod: @"GET"];
    req.HTTPShouldHandleCookies = NO;
    
    NSHTTPURLResponse *response = nil;
    NSError *error = nil;
    
    NSData *returnData = [NSURLConnection sendSynchronousRequest:req 
                                               returningResponse:&response 
                                                           error:&error];
    
    if (response && response.statusCode == 200) {
        NSString *strrsp = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
        if (strrsp) {
            NSLog(@"Tweet successfully decoded as UTF8: %@", strrsp);
        } else {
            NSLog(@"Unable to decode data into string.");
        }
    } else {
        NSLog(@"HTTP Error description - %@ (%ld): %@", error.domain, (long)error.code, [error localizedDescription]);
    }
        
    [pool release];
    return 0;
}

Makefile

CC = clang

MAIN = main

SRCS = main.o 

default: $(MAIN)

$(MAIN): $(SRCS)
	$(CC) -O0 -Wall -o $(MAIN) $(SRCS) -framework Foundation

clean:
	find . -name "*.o" -exec rm {} \;
	if [ -f "$(MAIN)" ]; then rm $(MAIN); fi

all: default

See https://gist.github.com/2714295 for the server this is intended to (not) work with.