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simplify sending of (connection-level) BLOCKED frames

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This commit is contained in:
Marten Seemann 2017-12-18 14:54:09 +07:00
parent d49ad2d0cc
commit 092908d3e0
15 changed files with 80 additions and 148 deletions
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13
internal/flowcontrol/base_flow_controller.go
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@ -11,8 +11,9 @@ import (
type baseFlowController struct {
// for sending data
bytesSent protocol.ByteCount
sendWindow protocol.ByteCount
bytesSent protocol.ByteCount
sendWindow protocol.ByteCount
lastBlockedAt protocol.ByteCount
// for receiving data
mutex sync.RWMutex
@ -72,12 +73,14 @@ func (c *baseFlowController) getWindowUpdate() protocol.ByteCount {
return c.receiveWindow
}
// IsBlocked says if it is blocked by flow control.
// IsBlocked says if it is newly blocked by flow control.
// For every offset, it only returns true once.
// If it is blocked, the offset is returned.
func (c *baseFlowController) IsBlocked() (bool, protocol.ByteCount) {
if c.sendWindowSize() != 0 {
func (c *baseFlowController) IsNewlyBlocked() (bool, protocol.ByteCount) {
if c.sendWindowSize() != 0 || c.sendWindow == c.lastBlockedAt {
return false, 0
}
c.lastBlockedAt = c.sendWindow
return true, c.sendWindow
}