[sr-dev] [kamailio/kamailio] Unexpected return code from route with switch-case block (Issue #4088)

<!-- Kamailio Project uses GitHub Issues only for bugs in the code or feature requests. Please use this template only for bug reports. If you have questions about using Kamailio or related to its configuration file, ask on sr-users mailing list: * https://lists.kamailio.org/mailman3/postorius/lists/sr-users.lists.kamailio… If you have questions about developing extensions to Kamailio or its existing C code, ask on sr-dev mailing list: * https://lists.kamailio.org/mailman3/postorius/lists/sr-dev.lists.kamailio.o… Please try to fill this template as much as possible for any issue. It helps the developers to troubleshoot the issue. Note that an issue report may be closed automatically after about 2 months if there is no interest from developers or community users on pursuing it, being considered expired. In such case, it can be reopened by writing a comment that includes the token `/notexpired`. About two weeks before considered expired, the issue is marked with the label `stale`, trying to notify the submitter and everyone else that might be interested in it. To remove the label `stale`, write a comment that includes the token `/notstale`. Also, any comment postpone the `expire` timeline, being considered that there is interest in pursuing the issue. If there is no content to be filled in a section, the entire section can be removed. You can delete the comments from the template sections when filling. You can delete next line and everything above before submitting (it is a comment). --> ### Description I see unexpected return code from route if there is no explicit `return` and switch-case block. <!-- Explain what you did, what you expected to happen, and what actually happened. --> #### Reproduction Here is simple configuration part: ``` route(TEST_ROUTE_WITH_SWITCH); xlog("L_WARN", "TEST_ROUTE_WITH_SWITCH result $rc\n"); ... route[TEST_ROUTE_WITH_SWITCH] { $var(a) = "a"; switch ($var(a)) { case "a": case "b": $var(b) = $var(a); break; default: $var(c) = $var(a); } # must be optional according to documentation: # https://www.kamailio.org/wiki/cookbooks/5.3.x/core#return # > If no value is specified, or a route reaches its end without executing a return statement, it returns 1. # # return 1; } ``` Log: ``` WARNING: <script>: TEST_ROUTE_WITH_SWITCH result 0 ``` At the same time if there is no switch-block, return code is 1 as expected: ``` route[TEST_ROUTE_WITH_SWITCH] { $var(a) = "a"; } ``` Log: ``` WARNING: <script>: TEST_ROUTE_WITH_SWITCH w/o switch-case result 1 ``` ### Additional Information * **Kamailio Version** - output of `kamailio -v` ``` $ ./build/sbin/kamailio -v version: kamailio 5.7.5 (x86_64/linux) b47500-dirty flags: USE_TCP, USE_TLS, USE_SCTP, TLS_HOOKS, USE_RAW_SOCKS, DISABLE_NAGLE, USE_MCAST, DNS_IP_HACK, SHM_MMAP, PKG_MALLOC, MEM_JOIN_FREE, Q_MALLOC, F_MALLOC, TLSF_MALLOC, DBG_SR_MEMORY, USE_FUTEX, FAST_LOCK-ADAPTIVE_WAIT, USE_DNS_CACHE, USE_DNS_FAILOVER, USE_NAPTR, USE_DST_BLOCKLIST, HAVE_RESOLV_RES, TLS_PTHREAD_MUTEX_SHARED ADAPTIVE_WAIT_LOOPS 1024, MAX_RECV_BUFFER_SIZE 262144, MAX_URI_SIZE 1024, BUF_SIZE 65535, DEFAULT PKG_SIZE 8MB poll method support: poll, epoll_lt, epoll_et, sigio_rt, select. id: b47500 -dirty compiled on 22:02:13 Nov 9 2024 with /usr/bin/gcc 11.3.1 ``` * **Operating System**: <!-- Details about the operating system, the type: Linux (e.g.,: Debian 8.4, Ubuntu 16.04, CentOS 7.1, ...), MacOS, xBSD, Solaris, ...; Kernel details (output of `lsb_release -a` and `uname -a`) --> ``` Oracle Linux 9 ``` -- Reply to this email directly or view it on GitHub: https://github.com/kamailio/kamailio/issues/4088 You are receiving this because you are subscribed to this thread. Message ID: &lt;kamailio/kamailio/issues/4088(a)github.com&gt;