mirror of
https://github.com/octoleo/syncthing.git
synced 2024-11-06 05:17:49 +00:00
0b193b76c2
This adds two new configuration options:
// The number of connections at which we stop trying to connect to more
// devices, zero meaning no limit. Does not affect incoming connections.
ConnectionLimitEnough int
// The maximum number of connections which we will allow in total, zero
// meaning no limit. Affects incoming connections and prevents
// attempting outgoing connections.
ConnectionLimitMax int
These can be used to limit the number of concurrent connections in
various ways.
55 lines
1.4 KiB
Go
55 lines
1.4 KiB
Go
// Copyright (C) 2021 The Syncthing Authors.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at https://mozilla.org/MPL/2.0/.
|
|
|
|
package connections
|
|
|
|
import (
|
|
"sort"
|
|
"time"
|
|
|
|
"github.com/syncthing/syncthing/lib/protocol"
|
|
"github.com/syncthing/syncthing/lib/rand"
|
|
)
|
|
|
|
type dialQueueEntry struct {
|
|
id protocol.DeviceID
|
|
lastSeen time.Time
|
|
shortLived bool
|
|
targets []dialTarget
|
|
}
|
|
|
|
type dialQueue []dialQueueEntry
|
|
|
|
func (queue dialQueue) Sort() {
|
|
// Sort the queue with the most recently seen device at the head,
|
|
// increasing the likelihood of connecting to a device that we're
|
|
// already almost up to date with, index wise.
|
|
sort.Slice(queue, func(a, b int) bool {
|
|
qa, qb := queue[a], queue[b]
|
|
if qa.shortLived != qb.shortLived {
|
|
return qb.shortLived
|
|
}
|
|
return qa.lastSeen.After(qb.lastSeen)
|
|
})
|
|
|
|
// Shuffle the part of the connection queue that are devices we haven't
|
|
// connected to recently, so that if we only try a limited set of
|
|
// devices (or they in turn have limits and we're trying to load balance
|
|
// over several) and the usual ones are down it won't be the same ones
|
|
// in the same order every time.
|
|
idx := 0
|
|
cutoff := time.Now().Add(-recentlySeenCutoff)
|
|
for idx < len(queue) {
|
|
if queue[idx].lastSeen.Before(cutoff) {
|
|
break
|
|
}
|
|
idx++
|
|
}
|
|
if idx < len(queue)-1 {
|
|
rand.Shuffle(queue[idx:])
|
|
}
|
|
}
|