SIP Router: callid.c File Reference

TM :: Fast Call-ID generator. More...

#include <stdio.h>
#include <stdlib.h>
#include "../../dprint.h"
#include "../../pt.h"
#include "../../socket_info.h"
#include "callid.h"

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Defines

#define CALLID_NR_LEN 20
Length of a Call-ID in TM.
#define CALLID_SUFFIX_LEN
Length of the Call-ID suffix.

Functions

int child_init_callid (int rank)
Child initialization, generates suffix.
void generate_callid (str *callid)
Get a unique Call-ID.
static int inc_hexchar (char *_c)
Increment a character in hex, return the carry flag.
int init_callid (void)
Initialize the Call-ID generator, generates random prefix.

Detailed Description

Fast Call-ID generator. The Call-ID has the following form: <callid_nr>-<pid>@<ip>

callid_nr is initialized as a random number and continually increases
<pid>@<ip> is kept in callid_suffix
both are separated by a '-'

Definition in file callid.c.

Function Documentation

int child_init_callid ( int rank )

Parameters:

rank

not used

Returns:: 0 on success, -1 on error

Definition at line 115 of file callid.c.

References CALLID_SUFFIX_LEN, _str::len, and _str::s.

void generate_callid ( str * callid )

Parameters:

callid

returned Call-ID

Definition at line 168 of file callid.c.

References inc_hexchar(), _str::len, and _str::s.

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static int inc_hexchar ( char * _c ) [inline, static]

Parameters:

_c

input character

Returns:: carry flag

Definition at line 147 of file callid.c.

Referenced by generate_callid().

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int init_callid ( void )

Returns:: 0 on success, -1 on error

Definition at line 72 of file callid.c.

References CALLID_NR_LEN, _str::len, and _str::s.