Update component to advertise version feature and return it

_examples/go.mod

@@ -6,5 +6,5 @@ require (
 	github.com/google/go-cmp v0.3.0 // indirect
 	github.com/processone/mpg123 v1.0.0
 	github.com/processone/soundcloud v1.0.0
-	gosrc.io/xmpp v0.0.0-20190609110825-bc2fad6693da
+	gosrc.io/xmpp v0.0.0-20190610103001-322a6594e7f9
 )

_examples/go.sum

@@ -7,3 +7,7 @@ golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522 h1:bhOzK9QyoD0ogCnFro1m2
 golang.org/x/xerrors v0.0.0-20190513163551-3ee3066db522/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 gosrc.io/xmpp v0.0.0-20190609110825-bc2fad6693da h1:LmOtwrmeUIWTG87zgPc99ouMPDowrRtgEsCKKvkmanQ=
 gosrc.io/xmpp v0.0.0-20190609110825-bc2fad6693da/go.mod h1:6NJG4vRCxQJMGLxIdroPLPd++FPLOmDqJdJEt2mu4kQ=
+gosrc.io/xmpp v0.0.0-20190610095607-45cb2e6f343a h1:CUG1rGnMuMYUX2y9N/uPaDe/CS27GdNnxhnSmBAjCic=
+gosrc.io/xmpp v0.0.0-20190610095607-45cb2e6f343a/go.mod h1:6NJG4vRCxQJMGLxIdroPLPd++FPLOmDqJdJEt2mu4kQ=
+gosrc.io/xmpp v0.0.0-20190610103001-322a6594e7f9 h1:CJpDd5q0iH08ntle+uO5XNx+EGUycafYYR175pyPqOQ=
+gosrc.io/xmpp v0.0.0-20190610103001-322a6594e7f9/go.mod h1:6NJG4vRCxQJMGLxIdroPLPd++FPLOmDqJdJEt2mu4kQ=

_examples/xmpp_component/xmpp_component.go

@@ -44,6 +44,11 @@ func main() {
 				if p.Type == "get" {
 					discoItems(component, p.PacketAttrs, inner)
 				}
+			case *xmpp.Version:
+				fmt.Println("Version")
+				if p.Type == "get" {
+					version(component, p.PacketAttrs)
+				}
 			default:
 				fmt.Println("ignoring iq packet", inner)
 				xError := xmpp.Err{
@@ -83,6 +88,7 @@ func discoResult(c *xmpp.Component, attrs xmpp.PacketAttrs, info *xmpp.DiscoInfo
 		Features: []xmpp.Feature{
 			{Var: xmpp.NSDiscoInfo},
 			{Var: xmpp.NSDiscoItems},
+			{Var: "jabber:iq:version"},
 		},
 	}
 	iq.AddPayload(&payload)
@@ -104,3 +110,13 @@ func discoItems(c *xmpp.Component, attrs xmpp.PacketAttrs, items *xmpp.DiscoItem
 	iq.AddPayload(&payload)
 	_ = c.Send(iq)
 }
+
+func version(c *xmpp.Component, attrs xmpp.PacketAttrs) {
+	iq := xmpp.NewIQ("result", attrs.To, attrs.From, attrs.Id, "en")
+
+	var payload xmpp.Version
+	payload.Name = "Fluux XMPP Component"
+	payload.Version = "0.0.1"
+	iq.AddPayload(&payload)
+	_ = c.Send(iq)
+}