30 lines
811 B
Go
30 lines
811 B
Go
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package main
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import "sync"
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type QuestionSizeEstimator struct {
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sync.RWMutex
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minQuestionSize int
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}
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func NewQuestionSizeEstimator() QuestionSizeEstimator {
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return QuestionSizeEstimator{minQuestionSize: InitialMinQuestionSize}
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}
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func (questionSizeEstimator *QuestionSizeEstimator) MinQuestionSize() int {
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questionSizeEstimator.RLock()
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minQuestionSize := questionSizeEstimator.minQuestionSize
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questionSizeEstimator.RUnlock()
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return minQuestionSize
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}
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func (questionSizeEstimator *QuestionSizeEstimator) blindAdjust() {
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questionSizeEstimator.Lock()
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if MaxDNSPacketSize-questionSizeEstimator.minQuestionSize < questionSizeEstimator.minQuestionSize {
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questionSizeEstimator.minQuestionSize = MaxDNSUDPPacketSize
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} else {
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questionSizeEstimator.minQuestionSize *= 2
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}
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questionSizeEstimator.Unlock()
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}
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