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wgengine/magicsock: expand AddrSet.addrs comment

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This commit is contained in:
Brad Fitzpatrick 2020-03-05 21:17:41 -08:00
parent e733fa6f7e
commit fe0051fafd
1 changed files with 10 additions and 2 deletions
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12
wgengine/magicsock/magicsock.go
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@ -1010,8 +1010,16 @@ func (c *Conn) LinkChange() {
// AddrSet is a set of UDP addresses that implements wireguard/conn.Endpoint.
type AddrSet struct {
publicKey key.Public // peer public key used for DERP communication
addrs []net.UDPAddr // ordered priority list (low to high) provided by wgengine
publicKey key.Public // peer public key used for DERP communication
// addrs is an ordered priority list provided by wgengine,
// sorted from expensive+slow+reliable at the begnining to
// fast+cheap at the end. More concretely, it's typically:
//
// [DERP fakeip:node, Global IP:port, LAN ip:port]
//
// But there could be multiple or none of each.
addrs []net.UDPAddr
mu sync.Mutex // guards following fields