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Merge pull request #1730 from calmh/bug-1721

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Don't hang when attempting multicast discovery on non-multicast interfaces
This commit is contained in:
Audrius Butkevicius 2015-04-29 11:01:25 +01:00
commit a5e11c7489
1 changed files with 9 additions and 2 deletions
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11
internal/upnp/upnp.go
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@ -100,7 +100,7 @@ func Discover(timeout time.Duration) []IGD {
return results
}
resultChan := make(chan IGD, 16)
resultChan := make(chan IGD)
// Aggregator
go func() {
@ -129,6 +129,13 @@ func Discover(timeout time.Duration) []IGD {
wg := sync.NewWaitGroup()
for _, intf := range interfaces {
if intf.Flags&net.FlagUp == 0 {
continue
}
if intf.Flags&net.FlagMulticast == 0 {
continue
}
for _, deviceType := range []string{"urn:schemas-upnp-org:device:InternetGatewayDevice:1", "urn:schemas-upnp-org:device:InternetGatewayDevice:2"} {
wg.Add(1)
go func(intf net.Interface, deviceType string) {
@ -195,7 +202,7 @@ Mx: %d
// Listen for responses until a timeout is reached
for {
resp := make([]byte, 1500)
resp := make([]byte, 65536)
n, _, err := socket.ReadFrom(resp)
if err != nil {
if e, ok := err.(net.Error); !ok || !e.Timeout() {