How can I determine the amount of queued (unsent) data in a QWebSocket?
Why do I want to know this? Well for example, let's say I'm trying to
send real-time video over websocket.
My priorities are (highest to lowest):
1) Minimum possible latency (no more than unloaded ping roundtrip).
2) Send as much data as possible.
If I was trying to do something similar over a QIODevice (like
QTcpSocket) I would just connect to QIODevice::bytesWritten and write
some more data whenever QIODevice::bytesToWrite is 0. In this way no
buffers will ever fill up (and introduce unwanted delays) but I still
send the best video quality possible (given the available bandwidth).
Even though QWebSocket implements QWebSocket::bytesWritten it does not
appear to implement anything like QIODevice::bytesToWrite so I have no
way of knowing if the buffer is empty or not and whether or not I should
write more data.
Why doesn't QWebSocket have something like QIODevice::bytesToWrite? Is
there some other technique I can use to achieve my objective?
I am a newbie so it is quite possibly just something simple I
overlooked, any help appreciated!
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