Add support for chatstates notification (XEP-0085)

src/xmpp/chatStateNotification.go

@@ -0,0 +1,27 @@
+package xmpp
+
+import (
+	"encoding/xml"
+)
+
+const (
+	NSChatStatesNotification = "http://jabber.org/protocol/chatstates"
+)
+
+// XEP-0085: Chat States Notification
+
+type Active struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/chatstates active"`
+}
+type Composing struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/chatstates composing"`
+}
+type Paused struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/chatstates paused"`
+}
+type Inactive struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/chatstates inactive"`
+}
+type Gone struct {
+	XMLName xml.Name `xml:"http://jabber.org/protocol/chatstates gone"`
+}

src/xmpp/stanza.go

@@ -76,7 +76,14 @@ type Message struct {
 	Body    string   `xml:"body,omitempty"`
 	Thread  string   `xml:"thread,omitempty"`
 	Error   *Error   `xml:"error"`
-	Confir  *Confirm `xml:"confirm"`
+
+	Confir *Confirm `xml:"confirm"` // XEP-0070
+
+	Active    *Active    `xml:"active"`    // XEP-0085
+	Composing *Composing `xml:"composing"` // XEP-0085
+	Paused    *Paused    `xml:"paused"`    // XEP-0085
+	Inactive  *Inactive  `xml:"inactive"`  // XEP-0085
+	Gone      *Gone      `xml:"gone"`      // XEP-0085
 }
 
 // XMPP <presence/> stanza.