|
|
@@ -1,32 +1,30 @@
|
|
|
-1. Mangler Module
|
|
|
+The Mangler Module - SDP mangling
|
|
|
|
|
|
Gabriel Vasile
|
|
|
|
|
|
FhG FOKUS
|
|
|
|
|
|
- Copyright © 2003 FhG FOKUS
|
|
|
+ Copyright © 2003 FhG FOKUS
|
|
|
__________________________________________________________________
|
|
|
|
|
|
- 1.1. Overview
|
|
|
- 1.2. Parameters
|
|
|
+ List of Examples
|
|
|
|
|
|
- 1.2.1. contact_flds_separator (string)
|
|
|
+ 1. Set db_url parameter
|
|
|
+ 2. sdp_mangle_ip usage
|
|
|
+ 3. sdp_mangle_port usage
|
|
|
+ 4. encode_contact usage
|
|
|
+ 5. decode_contact usage
|
|
|
+ 6. decode_contact_header usage
|
|
|
|
|
|
- 1.3. Functions
|
|
|
+1. Overview
|
|
|
|
|
|
- 1.3.1. sdp_mangle_ip(pattern, newip)
|
|
|
- 1.3.2. sdp_mangle_port(offset)
|
|
|
- 1.3.3. encode_contact(encoding_prefix)
|
|
|
- 1.3.4. decode_contact()
|
|
|
- 1.3.5. decode_contact_header()
|
|
|
+ This is a module to help with SDP mangling
|
|
|
|
|
|
-1.1. Overview
|
|
|
+2. Parameters
|
|
|
|
|
|
- This is a module to help with SDP mangling. Still in testing.
|
|
|
+ 2.1. contact_flds_separator (string)
|
|
|
|
|
|
-1.2. Parameters
|
|
|
-
|
|
|
-1.2.1. contact_flds_separator (string)
|
|
|
+2.1. contact_flds_separator (string)
|
|
|
|
|
|
First char of this parameter is used as separator for encoding/decoding
|
|
|
Contact header.
|
|
|
@@ -47,9 +45,15 @@ modparam("module", "contact_flds_separator", "-")
|
|
|
then an encoded uri might look
|
|
|
sip:user-password-ip-port-protocol@PublicIP
|
|
|
|
|
|
-1.3. Functions
|
|
|
+3. Functions
|
|
|
+
|
|
|
+ 3.1. sdp_mangle_ip(pattern, newip)
|
|
|
+ 3.2. sdp_mangle_port(offset)
|
|
|
+ 3.3. encode_contact(encoding_prefix)
|
|
|
+ 3.4. decode_contact()
|
|
|
+ 3.5. decode_contact_header()
|
|
|
|
|
|
-1.3.1. sdp_mangle_ip(pattern, newip)
|
|
|
+3.1. sdp_mangle_ip(pattern, newip)
|
|
|
|
|
|
Changes IP addresses inside SDP package in lines describing connections
|
|
|
like c=IN IP4 Currently in only changes IP4 addresses since IP6
|
|
|
@@ -70,7 +74,7 @@ modparam("module", "contact_flds_separator", "-")
|
|
|
sdp_mangle_ip("10.0.0.0/8","193.175.135.38");
|
|
|
...
|
|
|
|
|
|
-1.3.2. sdp_mangle_port(offset)
|
|
|
+3.2. sdp_mangle_port(offset)
|
|
|
|
|
|
Changes ports inside SDP package in lines describing media like m=audio
|
|
|
13451.
|
|
|
@@ -86,7 +90,7 @@ sdp_mangle_ip("10.0.0.0/8","193.175.135.38");
|
|
|
sdp_mangle_port("-12000");
|
|
|
...
|
|
|
|
|
|
-1.3.3. encode_contact(encoding_prefix)
|
|
|
+3.3. encode_contact(encoding_prefix)
|
|
|
|
|
|
This function will encode uri-s inside Contact header in the following
|
|
|
manner sip:username:password@ip:port;transport=protocol goes
|
|
|
@@ -105,7 +109,7 @@ sdp_mangle_port("-12000");
|
|
|
if (src_ip == 10.0.0.0/8) encode_contact("enc_prefix","193.175.135.38");
|
|
|
...
|
|
|
|
|
|
-1.3.4. decode_contact()
|
|
|
+3.4. decode_contact()
|
|
|
|
|
|
This function will decode the URI in first line in packets which come
|
|
|
with encoded URI in the following manner
|
|
|
@@ -125,7 +129,7 @@ if (src_ip == 10.0.0.0/8) encode_contact("enc_prefix","193.175.135.38");
|
|
|
if (uri =~ "^enc*") { decode_contact(); }
|
|
|
...
|
|
|
|
|
|
-1.3.5. decode_contact_header()
|
|
|
+3.5. decode_contact_header()
|
|
|
|
|
|
This function will decode URIs inside Contact header in the same manner
|
|
|
as decode_contact. The difference is no dst_uri is set (src_ip,
|
Olle E. Johansson