Ip address drive

[TapTouchClick]

In some apps I've seen on the app store, like: for i: Development Editor for the iPad they offer a feature where in your browser anywhere you can visit an address (the iPad) and exchange files with the app. I'm looking to integrate this into my iPad app.

The reason for posting here, is I have NO idea where to start on this. I appreciate your help!

If someone here is very comfortable with doing this, I'd be willing to pay you to spend some time helping me with it.

Looking forward to all your help!

[ChrisL]

The basic idea is to create an http server running in the app that can handle requests for sending or receiving files. Fortunately, like many of these commonly needed tasks, there's a good chance that someone else has already done it for you -- check out Robin Lu's cocoa-web-resource and see if that will do what you need.

[TapTouchClick]

thanks chris.


I'm getting this warning:

format not a string literal and no format arguments

for this code:

NSString *message = @"Attempting to connect without a delegate. Set a delegate first.";
		[NSException raise:AsyncSocketException format:message];

what can I do to get rid of the warning.

[ChrisL]

Originally Posted by TapTouchClick

thanks chris.


I'm getting this warning:

format not a string literal and no format arguments

for this code:

NSString *message = @"Attempting to connect without a delegate. Set a delegate first.";
		[NSException raise:AsyncSocketException format:message];

what can I do to get rid of the warning.

Try:

[NSException raise:AsyncSocketException format:@"%@", message];

I think that should get rid of it.

[TapTouchClick]

thanks, again! one more thing.

	NSDictionary *fileAttributes = [[NSFileManager defaultManager] fileAttributesAtPath:filePath traverseLink:NO];

is deprecated. What should I replace it with?

Hopefully this will be the last.

[ChrisL]

Originally Posted by TapTouchClick

thanks, again! one more thing.

	NSDictionary *fileAttributes = [[NSFileManager defaultManager] fileAttributesAtPath:filePath traverseLink:NO];

is deprecated. What should I replace it with?

Hopefully this will be the last.

That sounds like a great question for the NSFileManager Class Documentation.

[TapTouchClick]

before posting that I attempted making that line read:

NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];

but it didn't seem to work. It just hangs when your uploading something.

[TapTouchClick]

when I start a new project I get this warnining:

warning: no rule to process file '$(PROJECT_DIR)/docroot/jquery.js' of type sourcecode.javascript for architecture i386

how can I fix this?

[ChrisL]

Originally Posted by TapTouchClick

before posting that I attempted making that line read:

NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];

but it didn't seem to work. It just hangs when your uploading something.

Are you sure that this line is actually the problem with the upload? Does it resume working if you restore the deprecated line? Try putting in a breakpoint and making sure the contents of fileAttributes are correct.

FYI, I'm not familiar with this library beyond the fact that it exists, so I can't really offer much insight if things don't work as advertised. You'll need to contact the original author or spend some time going through the code yourself.

[ChrisL]

Originally Posted by TapTouchClick

when I start a new project I get this warnining:

warning: no rule to process file '$(PROJECT_DIR)/docroot/jquery.js' of type sourcecode.javascript for architecture i386

how can I fix this?

This happens because Xcode mistakenly thinks that the javascript file is something that it should be trying to compile instead of a resource that just needs to be included in the app bundle. If you click the triangle next to your target in the project tree window and look in the "Compile Sources" folder, you should see the jquery.js file is there. Just move it from there to the "Copy Bundle Resources" folder instead and the warning should go away.

[TapTouchClick]

I made a new project. and now something odd is happening. The whole thing works exactly like the old project, but when you visit the IP address in the browser, its completely white. DO you think you can either look through my code, or help me find out what making it white.


Also, I retested it, and I'm 100% sure that:

 NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];

causes the simulator to hang and never start the connection.

[TapTouchClick]

I did some snooping around and I found it returns a 404 not found because of this:

- (void)handleResponse:(NSObject<HTTPResponse> *)rsp method:(NSString*)method
{
	// Respond properly to HTTP 'GET' and 'HEAD' commands
	httpResponse = [rsp retain];
	
	UInt64 contentLength = [httpResponse contentLength];
	
	if(contentLength == 0)
	{
		NSLog(@"conlen = 0");
		[self handleResourceNotFound];
		
		[httpResponse release];
		httpResponse = nil;
		
		return;
    }
	
	// Check for specific range request
	NSString *rangeHeader = [(NSString *)CFHTTPMessageCopyHeaderFieldValue(request, CFSTR("Range")) autorelease];
	
	BOOL isRangeRequest = NO;
	
	if(rangeHeader)
	{
		if([self parseRangeRequest:rangeHeader withContentLength:contentLength])
		{
			isRangeRequest = YES;
		}
	}
	
	CFHTTPMessageRef response;
	
	if(!isRangeRequest)
	{
		// Status Code 200 - OK
		response = CFHTTPMessageCreateResponse(kCFAllocatorDefault, 200, NULL, kCFHTTPVersion1_1);
		
		NSString *contentLengthStr = [NSString stringWithFormat:@"%qu", contentLength];
		CFHTTPMessageSetHeaderFieldValue(response, CFSTR("Content-Length"), (CFStringRef)contentLengthStr);
	}
	else
	{
		if([ranges count] == 1)
		{
			response = [self prepareUniRangeResponse:contentLength];
		}
		else
		{
			response = [self prepareMultiRangeResponse:contentLength];
		}
	}
    
	// If they issue a 'HEAD' command, we don't have to include the file
	// If they issue a 'GET' command, we need to include the file
	if([method isEqual:@"HEAD"])
	{
		NSData *responseData = [self preprocessResponse:response];
		[asyncSocket writeData:responseData withTimeout:WRITE_HEAD_TIMEOUT tag:HTTP_RESPONSE];
	}
	else
	{
		// Write the header response
		NSData *responseData = [self preprocessResponse:response];
		[asyncSocket writeData:responseData withTimeout:WRITE_HEAD_TIMEOUT tag:HTTP_PARTIAL_RESPONSE_HEADER];
		
		// Now we need to send the body of the response
		if(!isRangeRequest)
		{
			// Regular request
			NSData *data = [httpResponse readDataOfLength:READ_CHUNKSIZE];
			
			[asyncSocket writeData:data withTimeout:WRITE_BODY_TIMEOUT tag:HTTP_PARTIAL_RESPONSE_BODY];
		}
		else
		{
			// Client specified a byte range in request
			
			if([ranges count] == 1)
			{
				// Client is requesting a single range
				DDRange range = [[ranges objectAtIndex:0] ddrangeValue];
				
				[httpResponse setOffset:range.location];
				
				unsigned int bytesToRead = range.length < READ_CHUNKSIZE ? range.length : READ_CHUNKSIZE;
				
				NSData *data = [httpResponse readDataOfLength:bytesToRead];
				
				[asyncSocket writeData:data withTimeout:WRITE_BODY_TIMEOUT tag:HTTP_PARTIAL_RANGE_RESPONSE_BODY];
			}
			else
			{
				// Client is requesting multiple ranges
				// We have to send each range using multipart/byteranges
				
				// Write range header
				NSData *rangeHeader = [ranges_headers objectAtIndex:0];
				[asyncSocket writeData:rangeHeader withTimeout:WRITE_HEAD_TIMEOUT tag:HTTP_PARTIAL_RESPONSE_HEADER];
				
				// Start writing range body
				DDRange range = [[ranges objectAtIndex:0] ddrangeValue];
				
				[httpResponse setOffset:range.location];
				
				unsigned int bytesToRead = range.length < READ_CHUNKSIZE ? range.length : READ_CHUNKSIZE;
				
				NSData *data = [httpResponse readDataOfLength:bytesToRead];
				
				[asyncSocket writeData:data withTimeout:WRITE_BODY_TIMEOUT tag:HTTP_PARTIAL_RANGES_RESPONSE_BODY];
			}
		}
	}
	
	CFRelease(response);
}

how can I determine why content length is 0? Is this just feedback or is this what's causing it? This is really odd to me.

content length is based off of this function:

- (UInt64)contentLength
{
	NSLog(@"trys to check");
	//NSDictionary *fileAttributes = [[NSFileManager defaultManager] fileAttributesAtPath:filePath traverseLink:NO];
    NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];

    
	NSNumber *fileSize = [fileAttributes objectForKey:NSFileSize];
    NSLog(@"file-size: %d",fileSize);
	return (UInt64)[fileSize unsignedLongLongValue];
}

but it doesn't even get called because "trys to check" never appears in the console. Is this some leak, or what? I'm really in need of help here.

[TapTouchClick]

Also, something REALLY weird happens. in this function:

- (NSObject<HTTPResponse> *)httpResponseForURI:(NSString *)path
{
	// Override me to provide custom responses.
	
	NSString *filePath = [self filePathForURI:path];
	NSLog(@"fp: %@",filePath);


	if([[NSFileManager defaultManager] fileExistsAtPath:filePath])
	{
		return [[[HTTPFileResponse alloc] initWithFilePath:filePath] autorelease];
	}
	
	return nil;
}
	NSLog(@"full: %@",fullPath);
	}

the NSLog prints this:

fp: .../iPhone Simulator/4.0/Applications/61C282E2-9F1F-4E54-8975-14BF3F316475/tmp/docroot/favicon.ico

and NO where in the code does it say favicon.ico

I don't understand this at all, why does it work in one project, but then when I duplicate word for word over into another project all hell breaks loose.

[TapTouchClick]

Wow! restarted from scratch one more time, and everything works! even: NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];


thanks ChrisL, if you give me a donate link i'll send you $5.

[ChrisL]

Originally Posted by TapTouchClick

Wow! restarted from scratch one more time, and everything works! even: NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:filePath error:nil];

Glad you were able to get it.

thanks ChrisL, if you give me a donate link i'll send you $5.

I really appreciate the gesture, but it's not necessary. Put it towards a reference book or something else that would be useful to you.

[TapTouchClick]

How can I set this up so you can mount the drive to your mac using Finder?
Thanks