You are correct that concatenation vs interpolation works and doesn't work in slightly inconsistent ways, for instance function string arguments vs assignment.
The $_s() transformation may help make life easier. On May 2, 2018 10:50:53 AM EDT, George Diamantopoulos <[email protected]> wrote: >Hello, > >I'm a a bit confused as to when string concatenation will work in >kamailio >config file. So far I have identified the following cases: > >Working: > >As part of the right hand side of an assignment: >$var(x) = "string1" + "string2"; > >String argument of some functions: >xlog("L_ERR", "string1" + "string2" + DEFINED_STRING + '\n'); > >Conditional Statements: >if ( ru =~ "$" + "sip:" + $var(user) ) { > >Not Working: > >In string transformations (the fact that quotes is not part of the >argument >should give a hint though: >$var(x) = $(var(y){s.replace,match,"repl1" + "repl2"}); > >String argument of some other functions: >append_hf_value("P-Asserted-Identity", "<" + "$var(new_pai)" + ">"); >lookup("location", "sip:$var(username)@" + SIP_REALM_DEFINITION)); > >In module parameter definitions: >modparam("nathelper", "sipping_from", "sip:keepalive@" + >SIP_REALM_DEFINITION) > >So far, I have found this to be fairly consistent, except for use >within >functions. For example, string concatenation works for the second >argument >of xlog, but not for the string arguments of append_hf_value() or >lookup(). > >Is there anyway to know this for each function beforehand, or is my >only >choice to go through trial and error here? Thanks! > >BR, >George -- Alex -- Sent via mobile, please forgive typos and brevity. _______________________________________________ Kamailio (SER) - Users Mailing List [email protected] https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
