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Avoid unnecessarily allocating coords slice if it's unchanged.

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cathugger 2018-07-30 13:44:46 +00:00
parent 67b8a7a53d
commit b4db89ea9d
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GPG Key ID: 9BADDA2DAF6F01A8
1 changed files with 8 additions and 3 deletions
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11
src/yggdrasil/session.go
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@ -4,7 +4,10 @@ package yggdrasil
// It's responsible for keeping track of open sessions to other nodes
// The session information consists of crypto keys and coords
import "time"
import (
"bytes"
"time"
)
// All the information we know about an active session.
// This includes coords, permanent and ephemeral keys, handles and nonces, various sorts of timing information for timeout and maintenance, and some metadata for the admin API.
@ -72,8 +75,10 @@ func (s *sessionInfo) update(p *sessionPing) bool {
if p.MTU >= 1280 || p.MTU == 0 {
s.theirMTU = p.MTU
}
// allocate enough space for additional coords
s.coords = append(make([]byte, 0, len(p.Coords)+11), p.Coords...)
if !bytes.Equal(s.coords, p.Coords) {
// allocate enough space for additional coords
s.coords = append(make([]byte, 0, len(p.Coords)+11), p.Coords...)
}
now := time.Now()
s.time = now
s.tstamp = p.Tstamp