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36 lines
489 B
Go
36 lines
489 B
Go
package tftp
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import (
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"math/rand"
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"time"
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)
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const (
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defaultTimeout = 5 * time.Second
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defaultRetries = 5
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)
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type backoffFunc func(int) time.Duration
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type backoff struct {
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attempt int
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handler backoffFunc
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}
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func (b *backoff) reset() {
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b.attempt = 0
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}
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func (b *backoff) count() int {
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return b.attempt
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}
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func (b *backoff) backoff() {
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if b.handler == nil {
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time.Sleep(time.Duration(rand.Int63n(int64(time.Second))))
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} else {
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time.Sleep(b.handler(b.attempt))
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}
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b.attempt++
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}
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