"*A problem was reported to the Asterisk project where transactions were not **found when they should have been [1]. In the issue an incoming INVITE transaction is CANCELed but the INVITE transaction cannot be found so a 481 response is returned for the CANCEL. The problematic calls have a '_' **character in the Via branch parameter. *" --Credit: Richard Mudgett
In the next Asterisk release, we have disabled PJ_HASH_USE_OWN_TOLOWER in the bundled pjproject's config_site.h file. If you build or package pjproject yourself, we suggest you do the same. We've also updated the wiki[2] page. /* * Do not ever enable PJ_HASH_USE_OWN_TOLOWER because the algorithm is * inconsistently used when calculating the hash value and doesn't * convert the same characters as pj_tolower()/tolower(). Thus you * can get different hash values if the string hashed has certain * characters in it. (ASCII '@', '[', '\\', ']', '^', and '_') */ #undef PJ_HASH_USE_OWN_TOLOWER [1] https://issues.asterisk.org/jira/browse/ASTERISK-26490 [2] https://wiki.asterisk.org/wiki/display/AST/Building+and+Installing+pjproject -- George Joseph Digium, Inc. | Software Developer 445 Jan Davis Drive NW - Huntsville, AL 35806 - US Check us out at: www.digium.com & www.asterisk.org
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