|
|
@@ -10,7 +10,7 @@ Dan Pascu
|
|
|
|
|
|
<[email protected]>
|
|
|
|
|
|
- Copyright © 2008 Dan Pascu
|
|
|
+ Copyright © 2008 Dan Pascu
|
|
|
__________________________________________________________________
|
|
|
|
|
|
Table of Contents
|
|
|
@@ -405,7 +405,7 @@ Chapter 1. Admin Guide
|
|
|
each endpoint will receive exactly one keepalive message. A negative
|
|
|
value or zero will disable the keepalive functionality.
|
|
|
|
|
|
- Default value is "60".
|
|
|
+ Default value is “60�.
|
|
|
|
|
|
Example 1.1. Setting the keepalive_interval parameter
|
|
|
...
|
|
|
@@ -418,7 +418,7 @@ modparam("nat_traversal", "keepalive_interval", 90)
|
|
|
for this purpose are NOTIFY and OPTIONS. NOTIFY generates smaller
|
|
|
replies from user agents, but they are almost entirely negative
|
|
|
replies. Apparently almost none of the user agents understand that the
|
|
|
- purpose of the NOTIFY with a "keep-alive" event is to keep NAT open,
|
|
|
+ purpose of the NOTIFY with a “keep-alive� event is to keep NAT open,
|
|
|
even though many user agents send such NOTIFY requests themselves.
|
|
|
However this does not affect the result at all, since the purpose is to
|
|
|
trigger a response from the user agent behind NAT, positive or negative
|
|
|
@@ -433,7 +433,7 @@ modparam("nat_traversal", "keepalive_interval", 90)
|
|
|
times bigger than negative replies or replies to NOTIFY requests. For
|
|
|
this reason the default value for the used method is NOTIFY.
|
|
|
|
|
|
- Default value is "NOTIFY".
|
|
|
+ Default value is “NOTIFY�.
|
|
|
|
|
|
Example 1.2. Setting the keepalive_method parameter
|
|
|
...
|
|
|
@@ -448,7 +448,7 @@ modparam("nat_traversal", "keepalive_method", "OPTIONS")
|
|
|
keepalive message, which is the same interface on which the request
|
|
|
that triggered keepalive functionality arrived.
|
|
|
|
|
|
- Default value is "sip:keepalive@proxy_ip" with proxy_ip being the
|
|
|
+ Default value is “sip:keepalive@proxy_ip� with proxy_ip being the
|
|
|
actual IP of the outgoing interface.
|
|
|
|
|
|
Example 1.3. Setting the keepalive_from parameter
|
|
|
@@ -487,7 +487,7 @@ MyHeader: some_value\r\n")
|
|
|
case it will store it in the Kamailio working directory, or an absolute
|
|
|
path.
|
|
|
|
|
|
- Default value is undefined "keepalive_state".
|
|
|
+ Default value is undefined “keepalive_state�.
|
|
|
|
|
|
Example 1.5. Setting the keepalive_state_file parameter
|
|
|
...
|
|
|
@@ -501,7 +501,7 @@ tate")
|
|
|
5.2. fix_contact()
|
|
|
5.3. nat_keepalive()
|
|
|
|
|
|
-5.1. client_nat_test(type)
|
|
|
+5.1. client_nat_test(type)
|
|
|
|
|
|
Check if the client is behind NAT. What tests are performed is
|
|
|
specified by the type parameter which is an integer given by the sum of
|
|
|
@@ -509,12 +509,14 @@ tate")
|
|
|
numbers corresponding to individual tests are shown below:
|
|
|
|
|
|
* 1 - tests if client has a private IP address (as defined by
|
|
|
- RFC1918) in the Contact field of the SIP message.
|
|
|
+ RFC1918) or one from shared address space (RFC6598) in the Contact
|
|
|
+ field of the SIP message.
|
|
|
* 2 - tests if client has contacted Kamailio from an address that is
|
|
|
different from the one in the Via field. Both the IP and port are
|
|
|
compared by this test.
|
|
|
* 4 - tests if client has a private IP address (as defined by
|
|
|
- RFC1918) in the top Via field of the SIP message.
|
|
|
+ RFC1918) or one from shared address space (RFC6598) in the top Via
|
|
|
+ field of the SIP message.
|
|
|
|
|
|
For example calling client_nat_test("3") will perform test 1 and test 2
|
|
|
and return true if at least one succeeds, otherwise false.
|
|
|
@@ -529,7 +531,7 @@ if (client_nat_test("3")) {
|
|
|
}
|
|
|
...
|
|
|
|
|
|
-5.2. fix_contact()
|
|
|
+5.2. fix_contact()
|
|
|
|
|
|
Will replace the IP and port in the Contact header with the IP and port
|
|
|
the SIP message was received from. Usually called after a succesful
|
|
|
@@ -545,7 +547,7 @@ if (client_nat_test("3")) {
|
|
|
}
|
|
|
...
|
|
|
|
|
|
-5.3. nat_keepalive()
|
|
|
+5.3. nat_keepalive()
|
|
|
|
|
|
Trigger keepalive functionality for the source address of the request.
|
|
|
When called it only sets some internal flags, which will trigger later
|
Charles Chance