syncthing/lib/beacon/beacon.go

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2014-11-16 20:13:20 +00:00
// Copyright (C) 2014 The Syncthing Authors.
2014-09-29 19:43:32 +00:00
//
2015-03-07 20:36:35 +00:00
// 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 http://mozilla.org/MPL/2.0/.
package beacon
import "net"
type recv struct {
data []byte
src net.Addr
}
type Interface interface {
Send(data []byte)
Recv() ([]byte, net.Addr)
}
func genericReader(conn *net.UDPConn, outbox chan<- recv) {
bs := make([]byte, 65536)
for {
n, addr, err := conn.ReadFrom(bs)
if err != nil {
l.Warnln("multicast read:", err)
return
}
if debug {
l.Debugf("recv %d bytes from %s", n, addr)
}
c := make([]byte, n)
copy(c, bs)
select {
case outbox <- recv{c, addr}:
default:
if debug {
l.Debugln("dropping message")
}
}
}
}