kerozin created an issue (kamailio/kamailio#4294)
Kamailio 5.7.4
When I write A new value to $fU pseudovariable it acttually appends, but not replace.
A from header before manipulation: sip:3451088@192.168.107.17
In failure route I do $fU = "77719365301";
The header after manipulation looks as: sip:345108877719365301@192.168.107.17
this behavior was reported in #3165 but closed. I believe this was happen by mistake.
henningw left a comment (kamailio/kamailio#4294)
If you want to manipulate the From or To user it is recommended to use the uac_replace_from/_to functions and not using the pseudo-variables for that. Furthermore you should do From/To header manipulation only one, e.g. in branch_route. For further questions please contact the sr-users mailing list.
Closed #4294 as completed.
henningw left a comment (kamailio/kamailio#4294)
This exact point is documented in our FAQ as well https://www.kamailio.org/wikidocs/tutorials/faq/main/#why-parts-of-fromto-he...
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dennis -
Henning Westerholt