-#define POS_VIA 0
-#define POS_CONTACT 1
-#define POS_CONTENT 2
-#define POS_MEDIA 3
-#define POS_OWNER 4
-#define POS_CONNECTION 5
-#define POS_REQ_HEADER 6
-#define POS_SDP_HEADER 7
-
-struct sip_header_nfo {
- const char *lname;
- const char *sname;
- const char *ln_str;
- size_t lnlen;
- size_t snlen;
- size_t ln_strlen;
- int (*match_len)(const char *, const char *, int *);