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Continue discovery on connect errors (fixes #324)

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Continues trying to connect to the discovery server at regular intervals despite
failure. Whether or not to retry and retry interval should be specified in
configuration (not currently in this fix).
This commit is contained in:
Ben Sidhom 2014-07-04 13:47:54 -07:00
parent 3d7d4d845a
commit 2b26891062
1 changed files with 13 additions and 8 deletions
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21
discover/discover.go
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@ -172,16 +172,21 @@ func (d *Discoverer) sendLocalAnnouncements() {
} }
func (d *Discoverer) sendExternalAnnouncements() { func (d *Discoverer) sendExternalAnnouncements() {
// this should go in the Discoverer struct
errorRetryIntv := 60 * time.Second
remote, err := net.ResolveUDPAddr("udp", d.extServer) remote, err := net.ResolveUDPAddr("udp", d.extServer)
if err != nil { for err != nil {
l.Warnf("Global discovery: %v; no external announcements", err) l.Warnf("Global discovery: %v; trying again in %v", err, errorRetryIntv)
return time.Sleep(errorRetryIntv)
remote, err = net.ResolveUDPAddr("udp", d.extServer)
} }
conn, err := net.ListenUDP("udp", nil) conn, err := net.ListenUDP("udp", nil)
if err != nil { for err != nil {
l.Warnf("Global discovery: %v; no external announcements", err) l.Warnf("Global discovery: %v; trying again in %v", err, errorRetryIntv)
return time.Sleep(errorRetryIntv)
conn, err = net.ListenUDP("udp", nil)
} }
var buf []byte var buf []byte
@ -202,7 +207,7 @@ func (d *Discoverer) sendExternalAnnouncements() {
l.Debugf("discover: send announcement -> %v\n%s", remote, hex.Dump(buf)) l.Debugf("discover: send announcement -> %v\n%s", remote, hex.Dump(buf))
} }
_, err = conn.WriteTo(buf, remote) _, err := conn.WriteTo(buf, remote)
if err != nil { if err != nil {
if debug { if debug {
l.Debugln("discover: warning:", err) l.Debugln("discover: warning:", err)
@ -226,7 +231,7 @@ func (d *Discoverer) sendExternalAnnouncements() {
if ok { if ok {
time.Sleep(d.globalBcastIntv) time.Sleep(d.globalBcastIntv)
} else { } else {
time.Sleep(60 * time.Second) time.Sleep(errorRetryIntv)
} }
} }
} }