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Better trace output from mc

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This commit is contained in:
Jakob Borg 2014-04-30 15:13:54 +02:00
parent dcd7d278aa
commit f398ca77c1
1 changed files with 13 additions and 1 deletions
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14
mc/beacon.go
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@ -45,6 +45,9 @@ func (b *Beacon) run() {
if err != nil { if err != nil {
log.Fatal(err) log.Fatal(err)
} }
if debug {
dlog.Printf("trying %d interfaces", len(intfs))
}
for _, intf := range intfs { for _, intf := range intfs {
intf := intf intf := intf
@ -55,10 +58,13 @@ func (b *Beacon) run() {
conn, err := net.ListenMulticastUDP("udp4", &intf, group) conn, err := net.ListenMulticastUDP("udp4", &intf, group)
if err != nil { if err != nil {
if debug { if debug {
dlog.Printf("listen for multicast group on %q: %v", intf.Name, err) dlog.Printf("failed to listen for multicast group on %q: %v", intf.Name, err)
} }
} else { } else {
b.conns = append(b.conns, conn) b.conns = append(b.conns, conn)
if debug {
dlog.Printf("listening for multicast group on %q", intf.Name)
}
} }
} }
@ -72,6 +78,9 @@ func (b *Beacon) run() {
dlog.Println(err) dlog.Println(err)
return return
} }
if debug {
dlog.Printf("recv %d bytes from %s on %v", n, addr, conn)
}
b.outbox <- recv{bs[:n], addr} b.outbox <- recv{bs[:n], addr}
} }
}() }()
@ -85,6 +94,9 @@ func (b *Beacon) run() {
dlog.Println(err) dlog.Println(err)
return return
} }
if debug {
dlog.Printf("sent %d bytes to %s on %v", len(bs), group, conn)
}
} }
} }
}() }()