uhh whats a submodule i have never heard of that bro

go-xmpp/_examples/xmpp_component/README.md

@@ -0,0 +1,22 @@
+# xmpp_component
+
+This component will connect to ejabberd and act as a subdomain "service" of your primary XMPP domain
+(in that case localhost).
+
+This component does nothing expect connect and show up in service discovery.
+
+To be able to connect this component, you need to add a listener to your XMPP server.
+
+Here is an example ejabberd configuration for that component listener:
+
+```yaml
+listen:
+...
+  -
+    port: 8888
+    module: ejabberd_service
+    password: "mypass"
+```
+
+ejabberd will listen for a component (service) on port 8888 and allows it to connect using the
+secret "mypass".

go-xmpp/_examples/xmpp_component/xmpp_component.go

@@ -0,0 +1,119 @@
+package main
+
+import (
+	"fmt"
+	"log"
+
+	"gosrc.io/xmpp"
+	"gosrc.io/xmpp/stanza"
+)
+
+func main() {
+	opts := xmpp.ComponentOptions{
+		TransportConfiguration: xmpp.TransportConfiguration{
+			Address: "localhost:8888",
+			Domain:  "service2.localhost",
+		},
+		Domain:   "service2.localhost",
+		Secret:   "mypass",
+		Name:     "Test Component",
+		Category: "gateway",
+		Type:     "service",
+	}
+
+	router := xmpp.NewRouter()
+	router.HandleFunc("message", handleMessage)
+	router.NewRoute().
+		IQNamespaces(stanza.NSDiscoInfo).
+		HandlerFunc(func(s xmpp.Sender, p stanza.Packet) {
+			discoInfo(s, p, opts)
+		})
+	router.NewRoute().
+		IQNamespaces(stanza.NSDiscoItems).
+		HandlerFunc(discoItems)
+	router.NewRoute().
+		IQNamespaces("jabber:iq:version").
+		HandlerFunc(handleVersion)
+
+	component, err := xmpp.NewComponent(opts, router, handleError)
+	if err != nil {
+		log.Fatalf("%+v", err)
+	}
+
+	// If you pass the component to a stream manager, it will handle the reconnect policy
+	// for you automatically.
+	// TODO: Post Connect could be a feature of the router or the client. Move it somewhere else.
+	cm := xmpp.NewStreamManager(component, nil)
+	log.Fatal(cm.Run())
+}
+
+func handleError(err error) {
+	fmt.Println(err.Error())
+}
+
+func handleMessage(_ xmpp.Sender, p stanza.Packet) {
+	msg, ok := p.(stanza.Message)
+	if !ok {
+		return
+	}
+	fmt.Println("Received message:", msg.Body)
+}
+
+func discoInfo(c xmpp.Sender, p stanza.Packet, opts xmpp.ComponentOptions) {
+	// Type conversion & sanity checks
+	iq, ok := p.(*stanza.IQ)
+	if !ok || iq.Type != stanza.IQTypeGet {
+		return
+	}
+
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	// TODO: fix this...
+	if err != nil {
+		return
+	}
+	disco := iqResp.DiscoInfo()
+	disco.AddIdentity(opts.Name, opts.Category, opts.Type)
+	disco.AddFeatures(stanza.NSDiscoInfo, stanza.NSDiscoItems, "jabber:iq:version", "urn:xmpp:delegation:1")
+	_ = c.Send(iqResp)
+}
+
+// TODO: Handle iq error responses
+func discoItems(c xmpp.Sender, p stanza.Packet) {
+	// Type conversion & sanity checks
+	iq, ok := p.(*stanza.IQ)
+	if !ok || iq.Type != stanza.IQTypeGet {
+		return
+	}
+
+	discoItems, ok := iq.Payload.(*stanza.DiscoItems)
+	if !ok {
+		return
+	}
+
+	// TODO: fix this...
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	if err != nil {
+		return
+	}
+	items := iqResp.DiscoItems()
+
+	if discoItems.Node == "" {
+		items.AddItem("service.localhost", "node1", "test node")
+	}
+	_ = c.Send(iqResp)
+}
+
+func handleVersion(c xmpp.Sender, p stanza.Packet) {
+	// Type conversion & sanity checks
+	iq, ok := p.(*stanza.IQ)
+	if !ok {
+		return
+	}
+
+	iqResp, err := stanza.NewIQ(stanza.Attrs{Type: "result", From: iq.To, To: iq.From, Id: iq.Id, Lang: "en"})
+	if err != nil {
+		return
+	}
+	iqResp.Version().SetInfo("Fluux XMPP Component", "0.0.1", "")
+	_ = c.Send(iqResp)
+}