Hello Kamailio Community,
I'm currently working on a project that involves complex SIP routing and handling. I've encountered some difficulties while using change_reply_status, and append_hf functions in failure_route route in Kamailio. Although the documentation does provide guidance, the behaviors I am experiencing aren't aligning with the expected outcomes.
Issue 1: failure_route I've set up a failure_route to handle specific SIP response codes (>4xx). However, I've observed that it get trigered and lunched, but I can't use change_reply_status or append_hf, I was using this first in onreply_route.
Issue 2: change_reply_status I tried to use the change_reply_status function to modify the status of SIP replies, but it raises an error that this command cannot be executed here.
Issue 3: append_hf I've also attempted to use append_hf in my failure_route block to add headers to replies, but the headers are not being added as expected.
As a workaround, I've been using send_reply and append_to_reply for adding custom headers, and they seem to be working as expected. However, I found some old messages in kamailio mailing list, I can summerize what I learned like this ``` #Functions and Context - append_hf(): Adds a header to the currently processed SIP message. If you are in a route {...} block, then this adds the header to the request. If you are in an onreply_route, it adds the header to the reply. This function always acts on the message currently under scrutiny.
- append_to_reply(): This function is used to add a header to a reply that will be generated by Kamailio at a later time. This function only affects replies generated by Kamailio itself and is not applicable for messages that are simply being forwarded.
#Contexts - route {...}: This is typically where the incoming SIP request gets processed. Here, append_hf() will add headers to that request, and append_to_reply() will add headers to any replies that Kamailio might generate for this request.
- onreply_route: This is where incoming SIP replies are processed. Here, append_hf() will act on the reply, not the request. ``` I'd like to know if there is a way to handle sip replies in failure_route, because send_reply make a new reply from kamailio, instead I want to keep some important headers from the original reply.
I'd appreciate any insights or guidance the community can offer.
Best regards,
Failure route doesn't handle replies It handles requests to be which must be processed one more time if >299 reply received
On Tue, 26 Sept 2023, 19:13 sadik.oualla.mohamed--- via sr-users, < sr-users@lists.kamailio.org> wrote:
Hello Kamailio Community,
I'm currently working on a project that involves complex SIP routing and handling. I've encountered some difficulties while using change_reply_status, and append_hf functions in failure_route route in Kamailio. Although the documentation does provide guidance, the behaviors I am experiencing aren't aligning with the expected outcomes.
Issue 1: failure_route I've set up a failure_route to handle specific SIP response codes (>4xx). However, I've observed that it get trigered and lunched, but I can't use change_reply_status or append_hf, I was using this first in onreply_route.
Issue 2: change_reply_status I tried to use the change_reply_status function to modify the status of SIP replies, but it raises an error that this command cannot be executed here.
Issue 3: append_hf I've also attempted to use append_hf in my failure_route block to add headers to replies, but the headers are not being added as expected.
As a workaround, I've been using send_reply and append_to_reply for adding custom headers, and they seem to be working as expected. However, I found some old messages in kamailio mailing list, I can summerize what I learned like this ``` #Functions and Context
- append_hf(): Adds a header to the currently processed SIP message. If
you are in a route {...} block, then this adds the header to the request. If you are in an onreply_route, it adds the header to the reply. This function always acts on the message currently under scrutiny.
- append_to_reply(): This function is used to add a header to a reply that
will be generated by Kamailio at a later time. This function only affects replies generated by Kamailio itself and is not applicable for messages that are simply being forwarded.
#Contexts
- route {...}: This is typically where the incoming SIP request gets
processed. Here, append_hf() will add headers to that request, and append_to_reply() will add headers to any replies that Kamailio might generate for this request.
- onreply_route: This is where incoming SIP replies are processed. Here,
append_hf() will act on the reply, not the request.
failure_route, because send_reply make a new reply from kamailio, instead I want to keep some important headers from the original reply. I'd appreciate any insights or guidance the community can offer. Best regards, __________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions To unsubscribe send an email to sr-users-leave@lists.kamailio.org Important: keep the mailing list in the recipients, do not reply only to the sender! Edit mailing list options or unsubscribe:
-
sadik.oualla.mohamed＠gmail.com -
Yuriy G