Server side invitation step 3/4 preserve From public key / Client finalize in progress

client/server.go

@@ -198,6 +198,36 @@ func (ints *Server) BuildToServerMessageInvitationRequest(shortcode string, pass
 	return &msg, nil
 }
 
+// BuildToServerMessageInvitationAnswer creates an invitation answer to server and returns it as a meowlib.ToServerMessage
+// it takes as input a contactcard generated by Identity.InvitePeer
+func (ints *Server) BuildToServerMessageInvitationAnswer(invitationAnswer *meowlib.PackedUserMessage, myPublicKeyForThatPeer string, timeout int) (*meowlib.ToServerMessage, error) {
+	var msg meowlib.ToServerMessage
+	var inv meowlib.Invitation
+	invitationPayload, err := proto.Marshal(invitationAnswer)
+	if err != nil {
+		return nil, err
+	}
+	inv.Step = 3
+	msg.Type = "1"
+	msg.From = ints.UserKp.Public
+	inv.From = myPublicKeyForThatPeer
+	inv.Payload = invitationPayload
+	msg.Invitation = &inv
+	return &msg, nil
+}
+
+// BuildToServerMessageInvitationAnswerRequest requests invitation answer with provided id from server and returns it as a meowlib.ToServerMessage
+func (ints *Server) BuildToServerMessageInvitationAnswerRequest(invitationId string) (*meowlib.ToServerMessage, error) {
+	var msg meowlib.ToServerMessage
+	var inv meowlib.Invitation
+	msg.Type = "1"
+	msg.From = ints.UserKp.Public
+	inv.Step = 4
+	inv.Uuid = invitationId
+	msg.Invitation = &inv
+	return &msg, nil
+}
+
 // PackServerMessage
 func (ints *Server) PackServerMessage(payload []byte, signature []byte) (protoPackedMessage []byte, err error) {
 	var msg meowlib.PackedServerMessage