SIP Protocol, SIP Stack

SIP Protocol Stack

Overview

Features

Framework

What is SIP?

Session Initiation Protocol (SIP) is a protocol developed by IETF MMUSIC working team. It was proposed as a standard to establish, modify and terminate interactive users’ sessions, including various multimedia such as video, audio, instant messaging, online games and virtual reality. SIP has officially been approved as one of 3GPP signaling protocols and a permanent unit of IMS architecture. (From Wikipedia)

The standard link for SIP of IETF:http://www.ietf.org/rfc/rfc3261.txt

SIP Application

Based on SIP protocol stack, it can develop all kinds of applications as the following examples:

Why choose SIP?

• Readability- SIP is expressed in form of text. Its syntax is easy to
  understand and the semantics is close to human natural language.
  Hence, as a communication signaling protocol, SIP is very conducive to
  communication whether for development, debugging, or interoperability
  test.

• Scalability- SIP protocol structure boasts of strong scalability.So far, there
  are hundreds of extension protocol based on the SIP core of Protocol
  RFC3261, among which are documents defined by the IETF, OMA, GSMA
  and 3GPP Organizations. And thus various types of business expand. SIP
  has no restriction in communication carrier and can build any
  communication session from voice to video.

• Collaboration- SIP can work together with many other protocols to provide
  more powerful business capability. Its protocols include SDP、DHCP、
  HTTP、DNS, RADIUS, XCAP, TBCP, MSRP, etc. What’s more, it can even
  work with the protocols that you defined.

• epidemic– there are more and more technology using SIP. Apart from the
  traditional application of VoIP, the main protocol in IMS, the application
  system of IP domain in 3G and 4G LTE in the network operator area,also
  adopts SIP. SIP protocol is broadly supported by the Internet and IT
  manufacturers, among which are the famous Microsoft, Apple and AOL.

RFC that Juphoon SIP Protocol Stack complied

RFC 3261	Session Initiation Protocol
RFC 3262	Reliability of Provisional Response
RFC 3263	Locating SIP Servers
RFC 3264	An Offer-Answer Model with Session Description
RFC 3265	Specific Event Notification
RFC 3311	The SIP UPDATE method
RFC 3312	Integration of Resource Management and Session Initiation Protocol (SIP)
RFC 3313	Private SIP Extensions for Media Authorization
RFC 3323	A Private mechanism for the SIP
RFC 3325	Private Extensions to the SIP for Asserted Identity within Trusted Networks
RFC 3326	The Reason Header
RFC 3329	Security Mechanism Agreement for the SIP
RFC 3372	SIP for Telephones (SIP-T): Context and Architectures
RFC 3428	Session Initiation Protocol (SIP) Extension for Instant Messaging
RFC 3515	The REFER method RFC 2806 URLs for Telephone Calls
RFC 2806	URLs for Telephone Calls
RFC 2976	The SIP INFO Method
RFC 3204	MIME media types for ISUP and QSIG Objects
RFC 3581	An Extension to the SIP for Symmetric Response Routing
RFC 3841	Caller Preferences for the Session Initiation Protocol (SIP)
RFC 3891	The Session Initiation Protocol (SIP) "Replaces" Header
RFC 3892	The Session Initiation Protocol (SIP) Referred-By Mechanism
RFC 3903	Session Initiation Protocol (SIP) Extension for Event State Publication
RFC 3911	The Session Initiation Protocol (SIP) "Join" Header
RFC 3455	Private Header (P-Header) Extensions to the Session Initiation Protocol (SIP) for the 3GPP
RFC 3327	SIP Extension Header Field for Registering Non-Adjacent Contacts
RFC 3608	SIP Extension Header Field for Service Route Discovery During Registration
RFC 2368	The mailto URL scheme RFC 2327 Session Description Protocol
RFC 4028	Session Timers in the Session Initiation Protocol (SIP)

15:51:36	ZOS:	INFO:	time init ok.
15:51:36	ZOS:	INFO:	print init ok.
15:51:36	ZOS:	INFO:	log init ok.
15:51:36	ZOS:	INFO:	heap init ok.
15:51:36	ZOS:	INFO:	memory init ok.
15:51:36	ZOS:	INFO:	interrupt init ok.
15:51:36	ZOS:	INFO:	dump init ok.
15:51:36	ZOS:	INFO:	fsm dump init ok.
15:51:36	ZOS:	INFO:	inet init ok.
15:51:36	ZOS:	INFO:	message init ok.
15:51:36	ZOS:	INFO:	dbuf init ok.
15:51:36	ZOS:	INFO:	pmem init ok.
15:51:36	ZOS:	INFO:	module init ok.
15:51:36	ZOS:	INFO:	task init ok.
15:51:36	ZOS:	INFO:	task< 0x1 > qtimer create ok.
15:51:36	ZOS:	INFO:	task< TIMER > register ok.
15:51:36	ZOS:	INFO:	task< TIMER > spawn ok.
15:51:36	ZOS:	INFO:	timer init ok.
15:51:36	ZOS:	INFO:	log start ok.
15:51:36	ZOS:	INFO:	system init ok.
15:51:36	ZOS:	INFO:	task< AUDIO > register ok.
15:51:36	AUDIO:	INFO:	LstrmCreate add tone file 0.
15:51:36	AUDIO:	INFO:	LstrmCreate add tone file 1.
15:51:36	AUDIO:	INFO:	LstrmCreate add tone file 2.
15:51:36	AUDIO:	INFO:	LstrmCreate add tone file 3.

RESOURCE	TOTAL	FREE	PEEK ALLOC	REQUEST	RELEASE
Call	64	63	2	5	4
Session	64	63	4	10	9
Dialog	64	63	4	10	9
Subscription	64	64	0	0	0
Transaction	64	64	5	14	14
Connection	6	13	3	3	0

[ SESSION ID. 0x00010004 ]
UserId:	0x12003
Call ID:	_HsmusrgwecIlDaIpUUS2dxR@192.168.0.10
Dialog Count: 1
Dialog Id:	0x00010005
[ SESSION ID. 0x00020003 ]
UserId:	0x12004
Call ID:	4HshusAgwedIlDbIpUUS2dxR@192.168.0.10
Dialog Count: 1
Dialog Id:	0x00020004
[ SESSION ID. 0x00020004 ]
UserId:	0x12004
Call ID:	4HshusAgwedIlDbIpUUS2dxR@192.168.0.10
Dialog Count: 1
Dialog Id:	0x00020005

[ DIALOG ID. 3 ]
Session Id:	2
Dialog Type:	INVITE DIALOG
Dialog State:	INVITE TERMINATING
Term Type:	BY RECEIVED CANCEL
Secure:	FALSE
Passive:	TRUE
Local CSeq:	0
Remote CSeq:	1
Local Tag:	hRrLzUrL3OkMumx_lmx*zyP%oL
Remote Tag:	0809mytag
Trans Count:	1
Trans Id:	5
[ FSM DUMP Dialog ] 4/11 (Stack Count / Deep Size)
No.	Old State	Event	New State
< 0 >	INVITE IDLE	RECV_INVITE	INVITE IN
< 1 >	INVITE IN	SEND_1XX	INVITE EARLY UAS
< 2 >	INVITE EARLY UAS	RECV_CANCEL	INVITE TERMINATING
< 3 >	INVITE TERMINATING	TERMINATED	INVITE TERMINATING
[ TIMER ID. 6 ]
Timer User:	DIALOG
Timer Type:	TIMER SEND_2XX
Timer Length:	0
Timer Id:	6
Timer Active:	STOP

[ TRANSACTION ID. 5 ]
User Id:	3
Trans Type:	NON-INVITE SERVER TRANSACTION
Trans State:	NIST COMPLETED
Trans Method:	CANCEL
CSeq Value:	1
[ FSM DUMP Transaction ] 2/11 (Stack Count / Deep Size)
No.	Old State	Event	New State
< 0 >	NIST IDLE	RECV_NONINVTE	NIST TRYING
< 1 >	NIST TRYING	SEND_2XX	NIST COMPLETED
[ TIMER ID. 9 ]
Timer User:	TRANSACTION
Timer Type:	TIMER C
Timer Length:	64000
Timer Id:	9
Timer Active:	STOP
[ TIMER ID. 8 ]
Timer User:	TRANSACTION
Timer Type:	TIMER J
Timer Length:	32000
Timer Id:	8
Timer Active:	RUNNING

[ SIP MODULE CONFIG ]
Upper Task Id:	0x60000	Timer A Length:	500
#Task Parameter
Sip Task Priority:	0	Timer B Length:	32000
Sip Stack Size:	32768	Timer C Length:	128000
Sip Queue Size:	100	Timer D Length:	32000
Sip Timer Size:	200	Timer E Length:	500
#Resource Number
Call Number:	64	Timer F Length:	32000
Session Number:	64	Timer G Length:	500
Dialog Number:	64	Timer H Length:	32000
Subscription Number:	64	Timer I Length:	5000
Transaction Number:	64	Timer J Length:	32000
Connection Number:	16	Timer K Length:	500
#Protocol Parameter
Max Forwards:	70	Reliable 1XX Time:	500
#Timer Length: (ms)
T1 Length:	500	Send 2XX Time:	500
T2 Length:	4000	Stop 2XX Time:	32000
T4 Length:	5000	Wait ACK Time:	32000

BUCKET	TOTAL	FREE	PEEK ALLOC	REQUEST	RELEASE
128	14	2	27	146	134
256	0	0	1	26	26
512	12	6	30	254	248
1024	4	3	17	140	139
2048	0	0	1	6	6
4096	0	0	0	0	0
5120	0	0	0	0	0
8192	0	0	0	0	0
16384	0	0	1	2	2
32768	0	0	0	0	0
65536	0	0	0	0	0
Dbuf:	total 14	free 8	peek 24	request 277	release 271
Mem:	total 12752	used 6088	free 6664

[No.1]	Dump "sua membuf" 1/8 (Stack Count / Deep Size)	Dump Stack:
< 0 >	1	"membuf create"
"..\..\..\src\sua\sua_util.c":		569
[No.2]	Dump "rtp msgbuf" 1/4 (Stack Count / Deep Size)	Dump Stack:
< 0 >	1	"msgbuf create"
"..\..\..\src\protocol\rtp\rtp_sess.c":		103
[No.3]	Dump "sip sessbuf" 1/16 (Stack Count / Deep Size)	Dump Stack:
< 0 >	1	"membuf create"
"..\..\..\src\protocol\sip\sip_core.c":		55
[No.4]	Dump "sua membuf" 1/8 (Stack Count / Deep Size)	Dump Stack:
< 0 >	1	"membuf create"
"..\..\..\src\sua\sua_util.c":		250
[No.5]	Dump "sua membuf" 1/8 (Stack Count / Deep Size)	Dump Stack:
< 0 >	1	"membuf create"
"..\..\..\src\sua\sua_util.c":		753
[No.6]	Dump "sip msgbuf" 1/16 (Stack Count / Deep Size)	Dump Stack:
< 0 >	1	"msgbuf create"
"..\..\..\src\protocol\sip\sip_evnt.c":		155