Component skeleton

cmd/xmpp_component/xmpp_component.go

@@ -0,0 +1,7 @@
+package main
+
+import "fluux.io/xmpp"
+
+func main() {
+	xmpp.Open("test")
+}

component.go

@@ -0,0 +1,37 @@
+package xmpp
+
+import (
+	"fmt"
+	"net"
+	"time"
+)
+
+const componentStreamOpen = "<?xml version='1.0'?><stream:stream to='%s' xmlns='%s' xmlns:stream='%s'>"
+
+// Component implements an XMPP extension allowing to extend XMPP server
+// using external components. Component specifications are defined
+// in XEP-0114, XEP-0355 and XEP-0356.
+type Component struct {
+	// TCP level connection
+	conn net.Conn
+}
+
+// TODO Helper to prepare connection string
+func Open(connStr string) error {
+	var conn net.Conn
+	var err error
+
+	if conn, err = net.DialTimeout("tcp", "localhost:8888", time.Duration(5)*time.Second); err != nil {
+		return err
+	}
+
+	// TODO send stream open and check for reply
+	// Send stream open tag
+	componentHost := "mqtt.localhost"
+	if _, err := fmt.Fprintf(conn, componentStreamOpen, componentHost, NSComponent, NSStream); err != nil {
+		fmt.Println("Cannot send stream open.")
+		return err
+	}
+
+	return nil
+}

ns.go

@@ -7,4 +7,5 @@ const (
 	nsBind      = "urn:ietf:params:xml:ns:xmpp-bind"
 	nsSession   = "urn:ietf:params:xml:ns:xmpp-session"
 	NSClient    = "jabber:client"
+	NSComponent = "jabber:component:accept"
 )