Fix issues after refactor

Relates to #126

_examples/go.sum

@@ -23,6 +23,7 @@ github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMyw
 github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
 github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
 github.com/google/pprof v0.0.0-20190908185732-236ed259b199/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
+github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
 github.com/jonboulle/clockwork v0.1.0/go.mod h1:Ii8DK3G1RaLaWxj9trq07+26W01tbo22gdxWY5EU2bo=
@@ -102,4 +103,5 @@ gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gotest.tools v2.1.0+incompatible/go.mod h1:DsYFclhRJ6vuDpmuTbkuFWG+y2sxOXAzmJt81HFBacw=
 gotest.tools/gotestsum v0.3.5/go.mod h1:Mnf3e5FUzXbkCfynWBGOwLssY7gTQgCHObK9tMpAriY=
 mvdan.cc/sh v2.6.4+incompatible/go.mod h1:IeeQbZq+x2SUGBensq/jge5lLQbS3XT2ktyp3wrt4x8=
+nhooyr.io/websocket v1.6.5 h1:8TzpkldRfefda5JST+CnOH135bzVPz5uzfn/AF+gVKg=
 nhooyr.io/websocket v1.6.5/go.mod h1:F259lAzPRAH0htX2y3ehpJe09ih1aSHN7udWki1defY=

_examples/muc_bot/README.md

@@ -0,0 +1,3 @@
+# XMPP Multi-User (MUC) chat bot example
+
+This code shows how to build a simple basic XMPP Multi-User chat bot using Fluux Go XMPP library.

client.go

@@ -25,6 +25,7 @@ const (
 	StateConnected
 	StateSessionEstablished
 	StateStreamError
+	StatePermanentError
 )
 
 // Event is a structure use to convey event changes related to client state. This

component.go

@@ -64,6 +64,7 @@ func (c *Component) Connect() error {
 	var state SMState
 	return c.Resume(state)
 }
+
 func (c *Component) Resume(sm SMState) error {
 	var err error
 	var streamId string
@@ -72,13 +73,13 @@ func (c *Component) Resume(sm SMState) error {
 	}
 	c.transport, err = NewComponentTransport(c.ComponentOptions.TransportConfiguration)
 	if err != nil {
-		c.updateState(StateStreamError)
-		return err
+		c.updateState(StatePermanentError)
+		return NewConnError(err, true)
 	}
 
 	if streamId, err = c.transport.Connect(); err != nil {
-		c.updateState(StateStreamError)
-		return err
+		c.updateState(StatePermanentError)
+		return NewConnError(err, true)
 	}
 	c.updateState(StateConnected)
 
@@ -91,7 +92,7 @@ func (c *Component) Resume(sm SMState) error {
 	// Check server response for authentication
 	val, err := stanza.NextPacket(c.decoder)
 	if err != nil {
-		c.updateState(StateDisconnected)
+		c.updateState(StatePermanentError)
 		return NewConnError(err, true)
 	}
 
@@ -105,7 +106,7 @@ func (c *Component) Resume(sm SMState) error {
 		go c.recv()
 		return nil
 	default:
-		c.updateState(StateStreamError)
+		c.updateState(StatePermanentError)
 		return NewConnError(errors.New("expecting handshake result, got "+v.Name()), true)
 	}
 }

stream_manager.go

@@ -86,9 +86,12 @@ func (sm *StreamManager) Run() error {
 		case StateStreamError:
 			sm.client.Disconnect()
 			// Only try reconnecting if we have not been kicked by another session to avoid connection loop.
+			// TODO: Make this conflict exception a permanent error
 			if e.StreamError != "conflict" {
 				sm.connect()
 			}
+		case StatePermanentError:
+			// Do not attempt to reconnect
 		}
 	}
 	sm.client.SetHandler(handler)

xmpp_transport.go

@@ -116,16 +116,27 @@ func (t XMPPTransport) Ping() error {
 }
 
 func (t XMPPTransport) Read(p []byte) (n int, err error) {
+	if t.readWriter == nil {
+		return 0, errors.New("cannot read: not connected, no readwriter")
+	}
 	return t.readWriter.Read(p)
 }
 
 func (t XMPPTransport) Write(p []byte) (n int, err error) {
+	if t.readWriter == nil {
+		return 0, errors.New("cannot write: not connected, no readwriter")
+	}
 	return t.readWriter.Write(p)
 }
 
 func (t XMPPTransport) Close() error {
-	_, _ = t.readWriter.Write([]byte("</stream:stream>"))
-	return t.conn.Close()
+	if t.readWriter != nil {
+		_, _ = t.readWriter.Write([]byte("</stream:stream>"))
+	}
+	if t.conn != nil {
+		return t.conn.Close()
+	}
+	return nil
 }
 
 func (t *XMPPTransport) LogTraffic(logFile io.Writer) {