Fix Reach services discovery
- Use github.com/grandcat/zeroconf lib instead of github.com/oleksandr/bonjour
This commit is contained in:
parent
9bd20331ef
commit
187d53fd29
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@ -1,65 +1,52 @@
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package emlid
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import (
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"context"
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"net"
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"sync"
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"time"
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"github.com/oleksandr/bonjour"
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"github.com/grandcat/zeroconf"
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)
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// Service is a ReachRS service discovered via MDNS-SD
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type Service struct {
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Name string
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AddrV4 net.IP
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AddrV4 *net.IP
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Port int
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}
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// Discover tries to discover ReachRS services on the local network via MDNS-SD
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func Discover(timeout time.Duration) ([]Service, error) {
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// Discover tries to discover ReachRS services on the local network via mDNS-SD
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func Discover(ctx context.Context) ([]Service, error) {
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var wg sync.WaitGroup
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wg.Add(1)
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resolver, err := bonjour.NewResolver(nil)
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resolver, err := zeroconf.NewResolver(nil)
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if err != nil {
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return nil, err
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}
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services := make([]Service, 0)
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entries := make(chan *bonjour.ServiceEntry)
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timer := time.NewTimer(timeout)
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defer timer.Stop()
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stop := func() {
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resolver.Exit <- true
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wg.Done()
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}
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entries := make(chan *zeroconf.ServiceEntry)
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go func() {
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for {
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select {
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case e, ok := <-entries:
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if !ok {
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stop()
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return
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for e := range entries {
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var addr *net.IP
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if len(e.AddrIPv4) > 0 {
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addr = &e.AddrIPv4[0]
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}
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services = append(services, Service{
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srv := Service{
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Name: e.Instance,
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AddrV4: e.AddrIPv4,
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AddrV4: addr,
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Port: e.Port,
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})
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case <-timer.C:
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stop()
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return
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}
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services = append(services, srv)
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}
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wg.Done()
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}()
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if err = resolver.Browse("_reach._tcp", ".local", entries); err != nil {
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if err = resolver.Browse(ctx, "_reach._tcp", ".local", entries); err != nil {
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return nil, err
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}
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@ -1,6 +1,7 @@
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package emlid
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import (
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"context"
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"testing"
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"time"
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)
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@ -11,7 +12,10 @@ func TestDiscovery(t *testing.T) {
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t.Skip("To run this test, use: go test -discovery-integration")
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}
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services, err := Discover(3 * time.Second)
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ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
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defer cancel()
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services, err := Discover(ctx)
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if err != nil {
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t.Fatal(err)
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}
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@ -0,0 +1,41 @@
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package main
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import (
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"context"
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"flag"
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"log"
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"time"
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"forge.cadoles.com/Pyxis/orion/emlid"
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)
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var (
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timeout = 5 * time.Second
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)
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func init() {
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flag.DurationVar(&timeout, "timeout", timeout, "mDNS scan timeout")
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}
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func main() {
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flag.Parse()
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log.Println("Searching for ReachRS services on network...")
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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services, err := emlid.Discover(ctx)
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if err != nil {
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log.Fatal(err)
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}
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for _, s := range services {
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log.Println("Found:")
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log.Printf(" Name: '%s'", s.Name)
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log.Printf(" Hosts: %s", s.AddrV4)
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log.Printf(" Port: '%d'", s.Port)
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}
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}
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7
go.mod
7
go.mod
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@ -2,13 +2,14 @@ module forge.cadoles.com/Pyxis/orion
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require (
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forge.cadoles.com/Pyxis/golang-socketio v0.0.0-20180919100209-bb857ced6b95
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github.com/caarlos0/env v3.3.0+incompatible
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github.com/caarlos0/env v3.4.0+incompatible
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github.com/cenkalti/backoff v2.0.0+incompatible // indirect
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github.com/davecgh/go-spew v1.1.1 // indirect
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github.com/go-chi/chi v3.3.3+incompatible
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github.com/gorilla/websocket v1.4.0 // indirect
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github.com/grandcat/zeroconf v0.0.0-20180329153754-df75bb3ccae1
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github.com/miekg/dns v1.0.12 // indirect
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github.com/mitchellh/mapstructure v1.0.0
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github.com/oleksandr/bonjour v0.0.0-20160508152359-5dcf00d8b228
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github.com/mitchellh/mapstructure v1.1.2
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github.com/pkg/errors v0.8.0
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github.com/pmezard/go-difflib v1.0.0 // indirect
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github.com/stretchr/testify v1.2.2 // indirect
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14
go.sum
14
go.sum
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@ -1,19 +1,21 @@
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forge.cadoles.com/Pyxis/golang-socketio v0.0.0-20180919100209-bb857ced6b95 h1:o3G5+9RjczCK1xAYFaRMknk1kY9Ule6PNfiW6N6hEpg=
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forge.cadoles.com/Pyxis/golang-socketio v0.0.0-20180919100209-bb857ced6b95/go.mod h1:I6kYOFWNkFlNeQLI7ZqfTRz4NdPHZxX0Bzizmzgchs0=
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github.com/caarlos0/env v3.3.0+incompatible h1:jCfY0ilpzC2FFViyZyDKCxKybDESTwaR+ebh8zm6AOE=
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github.com/caarlos0/env v3.3.0+incompatible/go.mod h1:tdCsowwCzMLdkqRYDlHpZCp2UooDD3MspDBjZ2AD02Y=
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github.com/caarlos0/env v3.4.0+incompatible h1:FRwBdvENjLHZoUbFnULnFss9wKtcapdaM35DfxiTjeM=
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github.com/caarlos0/env v3.4.0+incompatible/go.mod h1:tdCsowwCzMLdkqRYDlHpZCp2UooDD3MspDBjZ2AD02Y=
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github.com/cenkalti/backoff v2.0.0+incompatible h1:5IIPUHhlnUZbcHQsQou5k1Tn58nJkeJL9U+ig5CHJbY=
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github.com/cenkalti/backoff v2.0.0+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
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github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
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github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
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github.com/go-chi/chi v3.3.3+incompatible h1:KHkmBEMNkwKuK4FdQL7N2wOeB9jnIx7jR5wsuSBEFI8=
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github.com/go-chi/chi v3.3.3+incompatible/go.mod h1:eB3wogJHnLi3x/kFX2A+IbTBlXxmMeXJVKy9tTv1XzQ=
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github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
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github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
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github.com/grandcat/zeroconf v0.0.0-20180329153754-df75bb3ccae1 h1:VSELJSxQlpi1bz4ZwT+93hPpzNLRcgytLr77iVRJpcE=
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github.com/grandcat/zeroconf v0.0.0-20180329153754-df75bb3ccae1/go.mod h1:YjKB0WsLXlMkO9p+wGTCoPIDGRJH0mz7E526PxkQVxI=
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github.com/miekg/dns v1.0.12 h1:814rTNaw7Q7pGncpSEDT06YS8rdGmpUEnKgpQzctJsk=
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github.com/miekg/dns v1.0.12/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
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github.com/mitchellh/mapstructure v1.0.0 h1:vVpGvMXJPqSDh2VYHF7gsfQj8Ncx+Xw5Y1KHeTRY+7I=
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github.com/mitchellh/mapstructure v1.0.0/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
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github.com/oleksandr/bonjour v0.0.0-20160508152359-5dcf00d8b228 h1:Cvfd2dOlXIPTeEkOT/h8PyK4phBngOM4at9/jlgy7d4=
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github.com/oleksandr/bonjour v0.0.0-20160508152359-5dcf00d8b228/go.mod h1:MGuVJ1+5TX1SCoO2Sx0eAnjpdRytYla2uC1YIZfkC9c=
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github.com/mitchellh/mapstructure v1.1.2 h1:fmNYVwqnSfB9mZU6OS2O6GsXM+wcskZDuKQzvN1EDeE=
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github.com/mitchellh/mapstructure v1.1.2/go.mod h1:FVVH3fgwuzCH5S8UJGiWEs2h04kUh9fWfEaFds41c1Y=
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github.com/pkg/errors v0.8.0 h1:WdK/asTD0HN+q6hsWO3/vpuAkAr+tw6aNJNDFFf0+qw=
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github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
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github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
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