iOS In-App Audio Tweeting w/ Audio from the App Sandbox, like in TweetMic?

[MachCUBED]

I have the TwitterRequest class installed from the tutorial on iCodeBlog and can't figure out how to do an audio tweet using, for example, chir.ps to load an audio file from my app sandbox to Twitter. I know it's possible because of TweetMic but I haven't figured out how to do an in-app audio tweet.

For reference and convenience, here is TwitterRequest.h:

//
//  TwitterRequest.h
//  Chirpie
//
//  Created by Brandon Trebitowski on 6/15/09.
//  Copyright 2009 __MyCompanyName__. All rights reserved.
//

@interface TwitterRequest : NSObject {
	NSString			*username;
	NSString			*password;
	NSMutableData		*receivedData;
	NSMutableURLRequest	*theRequest;
	NSURLConnection		*theConnection;
	id					delegate;
	SEL					callback;
	SEL					errorCallback;
	
	BOOL				isPost;
	NSString			*requestBody;
}

@property(nonatomic, retain) NSString	   *username;
@property(nonatomic, retain) NSString	   *password;
@property(nonatomic, retain) NSMutableData *receivedData;
@property(nonatomic, retain) id			    delegate;
@property(nonatomic) SEL					callback;
@property(nonatomic) SEL					errorCallback;

-(void)friends_timeline:(id)requestDelegate requestSelector:(SEL)requestSelector;
-(void)request:(NSURL *) url;

-(void)statuses_update:(NSString *)status delegate:(id)requestDelegate requestSelector:(SEL)requestSelector;

@end

TwitterRequest.m

//
//  TwitterRequest.m
//  Chirpie
//
//  Created by Brandon Trebitowski on 6/15/09.
//  Copyright 2009 __MyCompanyName__. All rights reserved.
//

#import "TwitterRequest.h"


@implementation TwitterRequest

@synthesize username;
@synthesize password;
@synthesize receivedData;
@synthesize delegate;
@synthesize callback;
@synthesize errorCallback;

-(void)friends_timeline:(id)requestDelegate requestSelector:(SEL)requestSelector{
	isPost = NO;
	// Set the delegate and selector
	self.delegate = requestDelegate;
	self.callback = requestSelector;
	// The URL of the Twitter Request we intend to send
	NSURL *url = [NSURL URLWithString:@"http://twitter.com/statuses/friends_timeline.xml"];
	[self request:url];
}

-(void)statuses_update:(NSString *)status delegate:(id)requestDelegate requestSelector:(SEL)requestSelector; {
	isPost = YES;
	// Set the delegate and selector
	self.delegate = requestDelegate;
	self.callback = requestSelector;
	// The URL of the Twitter Request we intend to send
	NSURL *url = [NSURL URLWithString:@"http://twitter.com/statuses/update.xml"];
	requestBody = [NSString stringWithFormat:@"status=%@",status];
	[self request:url];
}

-(void)request:(NSURL *) url {
	theRequest   = [[NSMutableURLRequest alloc] initWithURL:url];
	
	if(isPost) {
		NSLog(@"ispost");
		[theRequest setHTTPMethod:@"POST"];
		[theRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
		[theRequest setHTTPBody:[requestBody dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES]];
		[theRequest setValue:[NSString stringWithFormat:@"%d",[requestBody length] ] forHTTPHeaderField:@"Content-Length"];
	}
	
	theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];
	
	if (theConnection) {
		// Create the NSMutableData that will hold
		// the received data
		// receivedData is declared as a method instance elsewhere
		receivedData=[[NSMutableData data] retain];
	} else {
		// inform the user that the download could not be made
	}
}

- (void)connection:(NSURLConnection *)connection didReceiveAuthenticationChallenge:(NSURLAuthenticationChallenge *)challenge {
	//NSLog(@"challenged %@",[challenge proposedCredential] );
	
	if ([challenge previousFailureCount] == 0) {
        NSURLCredential *newCredential;
        newCredential=[NSURLCredential credentialWithUser:[self username]
                                                 password:[self password]
                                              persistence:NSURLCredentialPersistenceNone];
        [[challenge sender] useCredential:newCredential
               forAuthenticationChallenge:challenge];
    } else {
        [[challenge sender] cancelAuthenticationChallenge:challenge];
        // inform the user that the user name and password
        // in the preferences are incorrect
		NSLog(@"Invalid Username or Password");
    }
	
}

- (void)connection:(NSURLConnection *)connection didReceiveResponse:(NSURLResponse *)response
{
    // this method is called when the server has determined that it
    // has enough information to create the NSURLResponse
	
    // it can be called multiple times, for example in the case of a
    // redirect, so each time we reset the data.
    // receivedData is declared as a method instance elsewhere
    [receivedData setLength:0];
}

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data {
	//NSLog([[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]);
	// append the new data to the receivedData
    // receivedData is declared as a method instance elsewhere
    [receivedData appendData:data];
}

- (void)connection:(NSURLConnection *)connection
  didFailWithError:(NSError *)error
{
    // release the connection, and the data object
    [connection release];
    // receivedData is declared as a method instance elsewhere
    [receivedData release];
	
	[theRequest release];
	
    // inform the user
    NSLog(@"Connection failed! Error - %@ %@",
          [error localizedDescription],
          [[error userInfo] objectForKey:NSErrorFailingURLStringKey]);
	
	if(errorCallback) {
		[delegate performSelector:errorCallback withObject:error];
	}
}

- (void)connectionDidFinishLoading:(NSURLConnection *)connection
{
    // do something with the data
	
	if(delegate && callback) {
		if([delegate respondsToSelector:self.callback]) {
			[delegate performSelector:self.callback withObject:receivedData];
		} else {
			NSLog(@"No response from delegate");
		}
	} 
	
	// release the connection, and the data object
	[theConnection release];
    [receivedData release];
	[theRequest release];
}

-(void) dealloc {
	[super dealloc];
}


@end

Methods for posting to Twitter:

- (IBAction)postTweet:(id)sender 
{
	Sitar_JamAppDelegate *delegate = [[UIApplication sharedApplication]delegate];
	//Make sure Twitter User Info is entered
	if (delegate.viewController.optionsViewController.twitterUsername.text != NULL && delegate.viewController.optionsViewController.twitterPassword.text != NULL) 
	{
		TwitterRequest * t = [[TwitterRequest alloc] init];
		t.username = delegate.viewController.optionsViewController.twitterUsername.text;
		t.password = delegate.viewController.optionsViewController.twitterPassword.text;
		
		[twitterMessageText resignFirstResponder];
		
		NSLog(@"%@", t.username);
		NSLog(@"%@", t.password);
		
		loadingActionSheet = [[UIActionSheet alloc] initWithTitle:@"Posting To Twitter..." delegate:nil 
												cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
		[loadingActionSheet showInView:self];
		[t statuses_update:twitterMessageText.text delegate:self requestSelector:@selector(status_updateCallback:)];
	}
	else 
	{
		UIAlertView *cantTweet = [[UIAlertView alloc]initWithTitle:@"ERROR: No Twitter Info Found" message:@"Please enter your Twitter account information into the options popover" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil];
		[cantTweet show];
		[cantTweet release];
	}

}
- (void) status_updateCallback: (NSData *) content {
	[loadingActionSheet dismissWithClickedButtonIndex:0 animated:YES];
	[loadingActionSheet release];
	NSString *contentEncodedString = [[NSString alloc] initWithData:content encoding:NSASCIIStringEncoding];
	NSLog(@"%@", contentEncodedString);
	[contentEncodedString release];
}

The thing is that I'm not sure which urls to use if I want to use chir.ps, nor do I know whether or not I need to make my own Twitter plug-in and run it on my server the way TweetMic appears to do. Please help soon, any of it will be appreciated.