add iq:version, iq:last

xmpp.go

@@ -65,6 +65,7 @@ type Client struct {
 	conn      net.Conn // connection to server
 	jid       string   // Jabber ID for our connection
 	domain    string
+	loginTime time.Time
 	p         *xml.Decoder
 }
 
@@ -257,6 +258,7 @@ func (o Options) NewClient() (*Client, error) {
 		client.Close()
 		return nil, err
 	}
+	client.loginTime = time.Now()
 
 	return client, nil
 }
@@ -666,7 +668,16 @@ func (c *Client) Recv() (stanza interface{}, err error) {
 			}
 			// <query xmlns='jabber:iq:roster' ver='5'>
 			// TODO: shall we check XMLName.Local is "query"?
-			if v.Query.XMLName.Space == "jabber:iq:roster" {
+			switch v.Query.XMLName.Space {
+			case "jabber:iq:version":
+				if err := c.SendVersion(v.ID, v.From, v.To); err != nil {
+					return Chat{}, err
+				}
+			case "jabber:iq:last":
+				if err := c.SendIQLast(v.ID, v.From, v.To); err != nil {
+					return Chat{}, err
+				}
+			case "jabber:iq:roster":
 				var item rosterItem
 				var r Roster
 				if v.Type != "result" && v.Type != "set" {

xmpp_version.go

@@ -0,0 +1,32 @@
+package xmpp
+
+import (
+	"fmt"
+	"runtime"
+	"time"
+)
+
+func (c *Client) SendVersion(id, toServer, fromU string) error {
+	_, err := fmt.Fprintf(c.conn, "<iq type='result' from='%s' to='%s'"+
+		" id='%s'>", xmlEscape(fromU), xmlEscape(toServer), xmlEscape(id))
+	if err != nil {
+		return err
+	}
+	_, err = fmt.Fprintf(c.conn, "<query xmlns='jabber:iq:version'>"+
+		"<name>go-xmpp</name><version>0.1</version><os>%s</os>"+
+		"</query>\n</iq>", runtime.GOOS)
+	return err
+}
+
+func (c *Client) SendIQLast(id, toServer, fromU string) error {
+	_, err := fmt.Fprintf(c.conn, "<iq type='result' from='%s' to='%s'"+
+		"id='%s' type='result'>\n", xmlEscape(fromU),
+		xmlEscape(toServer), xmlEscape(id))
+	if err != nil {
+		return err
+	}
+	tt := time.Now().Sub(c.loginTime)
+	_, err = fmt.Fprintf(c.conn, "<query xmlns='jabber:iq:last' "+
+		"seconds='%d'>Working</query>\n</iq>", int(tt.Seconds()))
+	return err
+}