Currently, sipXecs components generate "References" headers in some requests to show how certain dialogs are related to other dialogs. (E.g., the two legs and final dialog of a consultative transfer.) It would be helpful if this information was extracted into the siptrace files by syslog2siptrace, merged by siptrace-merge, and used in displays by sipviewer.
Two operations that would be useful to have in sipviewer are: (1) a right-click operation that sets the background of the selected dialog and also all referenced dialogs, and (2) an additional color for messages that are in a dialog that is referenced by the dialog of the current message. There are some open technical problems implementing this. One is extracting the references information from syslogs. In theory, the References values can be extracted from SIP messages by a suitable deterministic finite automaton, but I do not want to write that DFA. Perhaps we can use the approach that is currently used to extract other headers. Another problem is merging the references information when merging siptrace files. Since a References can appear anywhere in a dialog it refers to, syslog2siptrace is likely to write the references information into the siptrace file as XML elements at the end. But since we want to update siptrace-merge to be able to select dialogs and their referenced dialogs, siptrace-merge needs to be able to extract the references information before processing the messages in a siptrace file. I suppose siptrace-merge could seek to the end of a file and read it backwards to find those elements. Dale _______________________________________________ sipx-dev mailing list [email protected] List Archive: http://list.sipfoundry.org/archive/sipx-dev Unsubscribe: http://list.sipfoundry.org/mailman/listinfo/sipx-dev sipXecs IP PBX -- http://www.sipfoundry.org/
