Dear Friends,As suggested I went through the code of freeradius thoroughly and developed a reasonable understanding of the same. Now I want to do a practical exercise:Using radclient I want to create and send a dummy request to user module in order to take it's statistics.I would like to store username & password in a file.Please tell me what all steps do I have to perform in order to test the above scenario. Meaning which all files do I have to modify and how to perform the testing.Thanks in advance.Sonu From: Arran Cudbard-Bell <a.cudbardb@freeradius.org> Sent: Fri, 19 Sep 2014 00:27:57 To: FreeRadius users mailing list <freeradius-users@lists.freeradius.org> Subject: Re: Freeradius Queries > Fine I will go through the code thoroughly now. Good luck. As Alan said, if you have a specific need to modify the code then tell us what it is and we can advise you on the best way to achieve what you want. > One question that I have is how AVPs (Attribute Value Pairs) are stored in memory in freeradius. http://doc.freeradius.org/libradius_8h.html#structVALUE__PAIR They're stored in the above structure, and alloced on the heap at run time. They're parented from either the REQUEST struct, or from a RADIUS_PACKET struct to ensure they're cleaned up when the REQUEST is freed. Fixed length values are stored in the value_data_t union, octets, text and tlv attributes have dynamically allocated buffers parented off the VALUE_PAIR. These buffers are pointed to by the value_data_t union. VALUE_PAIRs are always allocated with pairalloc, and are freed using talloc_free or pairfree (if you need to free a linked list of AVPs). The vendor, number and type of attributes are in the DICT_ATTR struct. These are usually allocated on startup when reading the config and dictionaries. The da field of the VALUE_PAIR struct points to a DICT_ATTR struct. VALUE_PAIR (text, octets, tlv) buffers should be considered immutable. If a new value needs to be assigned, the old buffer is freed and a new one allocated. talloc_free performs all necessary cleanup for VALUE_PAIRs. -Arran Arran Cudbard-Bell <a.cudbardb@freeradius.org> FreeRADIUS development team FD31 3077 42EC 7FCD 32FE 5EE2 56CF 27F9 30A8 CAA2 - List info/subscribe/unsubscribe? See http://www.freeradius.org/list/users.html