Update xmpp vendor

vendor/github.com/mattn/go-xmpp/xmpp.go

@@ -541,6 +541,7 @@ type Chat struct {
 	Text      string
 	Roster    Roster
 	Other     []string
+	OtherElem []XMLElement
 	Stamp     time.Time
 }
 
@@ -587,7 +588,8 @@ func (c *Client) Recv() (stanza interface{}, err error) {
 				Remote:    v.From,
 				Type:      v.Type,
 				Text:      v.Body,
-				Other:  v.Other,
+				Other:     v.OtherStrings(),
+				OtherElem: v.Other,
 				Stamp:     stamp,
 			}
 			return chat, nil
@@ -600,6 +602,12 @@ func (c *Client) Recv() (stanza interface{}, err error) {
 		case *clientPresence:
 			return Presence{v.From, v.To, v.Type, v.Show, v.Status}, nil
 		case *clientIQ:
+			if bytes.Equal(v.Query, []byte(`<ping xmlns='urn:xmpp:ping'/>`)) {
+				err := c.SendResultPing(v.ID, v.From)
+				if err != nil {
+					return Chat{}, err
+				}
+			}
 			return IQ{ID: v.ID, From: v.From, To: v.To, Type: v.Type, Query: v.Query}, nil
 		}
 	}
@@ -714,11 +722,46 @@ type clientMessage struct {
 	Thread  string `xml:"thread"`
 
 	// Any hasn't matched element
-	Other []string `xml:",any"`
+	Other []XMLElement `xml:",any"`
 
 	Delay Delay `xml:"delay"`
 }
 
+func (m *clientMessage) OtherStrings() []string {
+	a := make([]string, len(m.Other))
+	for i, e := range m.Other {
+		a[i] = e.String()
+	}
+	return a
+}
+
+type XMLElement struct {
+	XMLName  xml.Name
+	InnerXML string `xml:",innerxml"`
+}
+
+func (e *XMLElement) String() string {
+	r := bytes.NewReader([]byte(e.InnerXML))
+	d := xml.NewDecoder(r)
+	var buf bytes.Buffer
+	for {
+		tok, err := d.Token()
+		if err != nil {
+			break
+		}
+		switch v := tok.(type) {
+		case xml.StartElement:
+			err = d.Skip()
+		case xml.CharData:
+			_, err = buf.Write(v)
+		}
+		if err != nil {
+			break
+		}
+	}
+	return buf.String()
+}
+
 type Delay struct {
 	Stamp string `xml:"stamp,attr"`
 }

vendor/github.com/mattn/go-xmpp/xmpp_ping.go

@@ -25,3 +25,9 @@ func (c *Client) PingS2S(fromServer, toServer string) error {
 		xmlEscape(fromServer), xmlEscape(toServer))
 	return err
 }
+
+func (c *Client) SendResultPing(id, toServer string) error {
+	_, err := fmt.Fprintf(c.conn, "<iq type='result' to='%s' id='%s'/>",
+		xmlEscape(toServer), xmlEscape(id))
+	return err
+}

vendor/manifest

@@ -113,7 +113,7 @@
 			"importpath": "github.com/mattn/go-xmpp",
 			"repository": "https://github.com/mattn/go-xmpp",
 			"vcs": "git",
-			"revision": "e44d1877bb457f5c3991903e9934a31e55c3a2ad",
+			"revision": "f4550b5399387339df5ce4c3f88c1ef85333bdd5",
 			"branch": "master",
 			"notests": true
 		},