diff --git a/client/client.go b/client/client.go
index f52d1c1..95895b7 100644
--- a/client/client.go
+++ b/client/client.go
@@ -149,10 +149,15 @@ func (client *Client) connect(password string) error {
 	if err := client.ReadElement(&iq); err != nil {
 		return err
 	}
-	if iq.Bind == nil {
+	if iq.Error != nil {
+		if iq.Error.Type == messages.ErrorClientTypeCancel && iq.Error.ServiceUnavailable != nil {
+			//TODO binding service unavailable
+		} else {
+			return errors.New(fmt.Sprintf("recv error on iq>bind: %s[%s]: %s -> %v", iq.Error.Code, iq.Error.Type, iq.Error.Text, iq.Error.Other))
+		}
+	} else if iq.Bind == nil {
 		return errors.New("<iq> result missing <bind>")
-	}
-	if iq.Bind.JID != nil {
+	} else if iq.Bind.JID != nil {
 		client.JID.Local = iq.Bind.JID.Local
 		client.JID.Domain = iq.Bind.JID.Domain
 		client.JID.Resource = iq.Bind.JID.Resource
@@ -160,7 +165,7 @@ func (client *Client) connect(password string) error {
 		return errors.New(fmt.Sprintf("%v", iq.Other))
 	}
 	// set status
-	client.Send(&messages.PresenceClient{Show: messages.ShowTypeXA, Status: "online"})
+	err = client.Send(&messages.PresenceClient{Show: messages.ShowTypeXA, Status: "online"})
 
 	return err
 }
diff --git a/daemon/tester/bot.go b/daemon/tester/bot.go
index e516209..b13c39c 100644
--- a/daemon/tester/bot.go
+++ b/daemon/tester/bot.go
@@ -82,7 +82,7 @@ func (t *Tester) StartBot(status *Status) {
 		}
 		logCTX = logCTX.WithField("from", msg.From.Full()).WithField("msg-recv", msg.Body)
 		if msg.Error != nil {
-			logCTX.Debugf("recv msg with error %s: %s", msg.Error.Code, msg.Error.Text)
+			logCTX.Debugf("recv msg with error %s[%s]: %s -> %v -> %v", msg.Error.Code, msg.Error.Type, msg.Error.Text, msg.Error.StanzaErrorGroup, msg.Error.Other)
 			continue
 
 		}
diff --git a/messages/error.go b/messages/error.go
index 0e03ef2..3fb73a5 100644
--- a/messages/error.go
+++ b/messages/error.go
@@ -9,12 +9,47 @@ type StreamError struct {
 	Any xml.Name `xml:",any"`
 }
 
+type ErrorClientType string
+
+const (
+	ErrorClientTypeAuth     ErrorClientType = "auth"
+	ErrorClientTypeCancel   ErrorClientType = "cancel"
+	ErrorClientTypeContinue ErrorClientType = "continue"
+	ErrorClientTypeModify   ErrorClientType = "motify"
+	ErrorClientTypeWait     ErrorClientType = "wait"
+)
+
+type StanzaErrorGroup struct {
+	BadRequest            *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas bad-request"`
+	Conflict              *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas conflict"`
+	FeatureNotImplemented *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas feature-not-implemented"`
+	Forbidden             *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas forbidden"`
+	Gone                  string    `xml:"urn:ietf:params:xml:ns:xmpp-stanzas gone"`
+	InternalServerError   *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas internal-server-error"`
+	ItemNotFound          *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas item-not-found"`
+	JIDMalformed          *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas jid-malformed"`
+	NotAcceptable         *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas not-acceptable"`
+	NotAllowed            *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas not-allowed"`
+	NotAuthorized         *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas not-authorized"`
+	PolicyViolation       *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas policy-violation"`
+	RecipientUnavailable  *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas recipient-unavailable"`
+	Redirect              string    `xml:"urn:ietf:params:xml:ns:xmpp-stanzas redirect"`
+	RegistrationRequired  *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas registration-required"`
+	RemoteServerNotFound  *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas remote-server-not-found"`
+	RemoteServerTimeout   *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas remote-server-timeout"`
+	ResourceConstraint    *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas resource-constraint"`
+	ServiceUnavailable    *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas service-unavailable"`
+	SubscriptionRequired  *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas subscription-required"`
+	UndefinedCondition    *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas undefined-condition"`
+	UnexpectedRequest     *xml.Name `xml:"urn:ietf:params:xml:ns:xmpp-stanzas unexpected-request"`
+}
+
 // ErrorClient element
 type ErrorClient struct {
-	XMLName xml.Name `xml:"jabber:client error"`
-	Code    string   `xml:"code,attr"`
-	Type    string   `xml:"type,attr"`
-	Text    string   `xml:"text"`
-
-	Any xml.Name `xml:",any"`
+	XMLName xml.Name        `xml:"jabber:client error"`
+	Code    string          `xml:"code,attr"`
+	Type    ErrorClientType `xml:"type,attr"`
+	Text    string          `xml:"text"`
+	Other   []XMLElement    `xml:",any"`
+	StanzaErrorGroup
 }
diff --git a/server/toclient/register.go b/server/toclient/register.go
index 9cdbdab..1703d1c 100644
--- a/server/toclient/register.go
+++ b/server/toclient/register.go
@@ -115,9 +115,8 @@ func (state *RegisterRequest) Process() state.State {
 			Error: &messages.ErrorClient{
 				Code: "409",
 				Type: "cancel",
-				Any: xml.Name{
-					Local: "conflict",
-					Space: "urn:ietf:params:xml:ns:xmpp-stanzas",
+				StanzaErrorGroup: messages.StanzaErrorGroup{
+					Conflict: &xml.Name{},
 				},
 			},
 		})