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add a HasWindowUpdate method to the stream flow controller

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This commit is contained in:
Marten Seemann 2017-12-21 17:06:38 +07:00
parent 8759fa2d8e
commit 15ab0ae443
5 changed files with 38 additions and 4 deletions
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10
internal/flowcontrol/base_flow_controller.go
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@ -60,12 +60,16 @@ func (c *baseFlowController) AddBytesRead(n protocol.ByteCount) {
c.bytesRead += n
}
func (c *baseFlowController) hasWindowUpdate() bool {
bytesRemaining := c.receiveWindow - c.bytesRead
// update the window when more than the threshold was consumed
return bytesRemaining <= protocol.ByteCount((float64(c.receiveWindowSize) * float64((1 - protocol.WindowUpdateThreshold))))
}
// getWindowUpdate updates the receive window, if necessary
// it returns the new offset
func (c *baseFlowController) getWindowUpdate() protocol.ByteCount {
bytesRemaining := c.receiveWindow - c.bytesRead
// update the window when more than the threshold was consumed
if bytesRemaining >= protocol.ByteCount((float64(c.receiveWindowSize) * float64((1 - protocol.WindowUpdateThreshold)))) {
if !c.hasWindowUpdate() {
return 0
}