Issue sending a huge amount of data from flash

I'm having an issue sending a huge (~4MB) block of data from flash, to my java servlet, currently I'm transferring the data using URLVariables, however it seems there's a limit to this (because it seems to work, with smaller data blocks), how do I suppress this limit, or in any other way, get my data to my servlet.

My flash code so far:

var variables:URLVariables = new URLVariables();
variables.name = name_string; //Plenty of these small attributes
variables.data = data_string; //And the huge BLOB

var sendReq:URLRequest = new URLRequest("http://localhost:8080/recieve/");
sendReq.method = URLRequestMethod.POST;
sendReq.data = variables;

var sendLoader:URLLoader;
sendLoader = new URLLoader();
sendLoader.addEventListener(Event.COMPLETE, Handler);
sendLoader.dataFormat = URLLoaderDataFormat.VARIABLES;
sendLoader.load(sendReq)开发者_如何学C;

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First, All POST methods fail at around 2000+ characters in IE (at-least prior to 8).

Next, there is a limit to the URLLoader: see Flash/AS3 - is there a limit to the number of simultaneous URLLoader.load() requests?

If possible, try breaking your data up into smaller pieces and sending it that way. This will eliminate the maximum problems.

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After looking into it, my earlier suggestion, FileReference, is a bad idea given the BitmapData is created within memory.

I will suggest trying How can I send a ByteArray (from Flash) and some form data to php?

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So after playing around with flash, I came up with a solution;

I simply broke the data_string into sub-strings of a given size, then enumerating these, and transferring each of these using the URLLoader, along with a part_id.

The collection of the sub-strings is then done at server-side, by the part_ids.

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This sounds more like an issue on the server side. Check your java environment settings and increase the maximum allowed POST/Request size.

The solution of breaking the data into multiple parts and sending them separately probably only works because each part is smaller than the server-side limit.