On Thu, Sep 13, 2012 at 11:36 AM, Brandon Mintern <
mintern@xxxxxxxxxxx> wrote:
> I'm building an application using Jetty WebSockets that sends a very
> large stream of binary from the client to the server. That is, it's a
> streaming upload that involves several _javascript_ calls to
> connection.send(block), where each block is an ArrayBuffer of up to 1
> MB in size. This is done completely asynchronously, so that a
> subsequent call to connection.send does not occur until a prior one
> completes successfully.
>
> On the other end, I've (so far) implemented OnBinaryMessage and
> OnTextMessage. It was working pretty well, but during testing I was
> seeing messages to the effect of "binary frame aggregation disabled."
> During onOpen, I tried calling connection.setMaxBinarySize(2048*512),
> but this failed as well. When I doubled that size, it worked, but it
> seems silly to allocate 2 MB when I might need as little as 512 bytes,
> and it definitely feels like I'm solving the wrong problem at this
> point.
>
> On the server side, I really don't need any aggregation at all; I'm
> simply writing data[offset:offset+length] to a PipedOutputStream,
> where the input side is read by another thread. What is the best way
> to simply pass off binary data in this way, without performing any
> aggregation? It seems that I need to implement WebSocket.OnFrame, but
> I could not find any helpful documentation for it. Can I simply return
> false if it is a text frame, and handle it if it is a binary frame?
> How do I check opcode to determine whether it is binary? If I'm
> handling binary messages using an onFrame method, do I no longer need
> to implement OnBinaryMessage? Do I need to do anything special with
> the flags argument? When is onHandshake called? Is there anything that
> must be done there?
>
> Thank you for any insight you can give me. If you can simply point me
> to documentation (the source as downloaded via maven has none), I'm
> happy to dig into it myself.
>
> Cheers,
> Brandon
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