1、MESSAGE消息
      1）头字段填写说明
      Call-id：                必选
      CSeq：                必选
      From：                 必选
      To：                       必选
      Max-Forwards：必选
      Via：                      必选
      常用的可选参数：
      指定的消息体
      2）消息实例
      发送MESSAGE请求消息给192.168.2.48的6010端口，参考消息如下（带了“Hello”的消息体）：

MESSAGE sip:1897778888@192.168.2.48:6010 SIP/2.0

Call-ID: 8e12c17121ac4121bf927f6fd8013358@192.168.2.89

From: <sip:01052237300@192.168.2.89>;tag=-0037-708c9a5cba8dd878

To: <sip:1897778888@192.168.2.89>

CSeq: 1 MESSAGE

Via: SIP/2.0/UDP 192.168.2.89:14010;branch=z9hG4bK--22bd7222

Max-Forwards: 30

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: <sip:192.168.2.89:14010>

Content-Type: text/plain

Content-Length: 5

Hello

收到来自192.168.2.48的6010端口的返回消息，参考消息如下（修改了消息体的内容，变成了“Hello amigo”）：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.89:14010;branch=z9hG4bK--22bd7222

From: <sip:01052237300@192.168.2.89>;tag=-0037-708c9a5cba8dd878

To: <sip:1897778888@192.168.2.89>;tag=-002-3c18e810ab17c76f

Call-ID: 8e12c17121ac4121bf927f6fd8013358@192.168.2.89

CSeq: 1 MESSAGE

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: <sip:192.168.2.48:54010>

Content-Type: text/plain

Content-Length: 11

Hello amigo

2、REGISTER消息
       1）头字段填写说明
       Call-id：                 必选
       Cseq：                   必选
       From：                   必选
       To：                       必选
       Max-Forwards：必选
       Via：                      必选
       Contact：              必选
       Authorization：   必选
       Expires：               常用可选头
       2）非鉴权注册消息实例
       在该实例中192.168.2.161机器发送注册消息给192.168.2.89服务器，发送消息实例如下：

Via: SIP/2.0/UDP 192.168.2.161:10586

Max-Forwards: 70

From: <sip:01062237496@192.168.2.89>;tag=ca04c1391af3429491f2c4dfbe5e1b2e;epid=4f2e395931

To: <sip:01062237496@192.168.2.89>

Call-ID: da56b0fab5c54398b16c0d9f9c0ffcf2@192.168.2.161

CSeq: 1 REGISTER

Contact: <sip:192.168.2.161:10586>;methods="INVITE, MESSAGE, INFO, SUBSCRIBE, OPTIONS, BYE, CANCEL, NOTIFY, ACK, REFER"

User-Agent: RTC/1.2.4949 (BOL SIP Phone 1005)

Event: registration

Allow-Events: presence

Content-Length: 0

当注册成功（回送200 OK）时，服务器发送的res消息参考如下：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.161:10586

From: <sip:01062237496@192.168.2.89>;tag=ca04c1391af3429491f2c4dfbe5e1b2e;epid=4f2e395931

To: <sip:01062237496@192.168.2.89>;tag=-00834-14d0805b62bc026d

Call-ID: da56b0fab5c54398b16c0d9f9c0ffcf2@192.168.2.161

CSeq: 1 REGISTER

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: sip:192.168.2.161:10586

Content-Length: 0

Expires: 3600

       3）鉴权注册消息实例
       当需要鉴权注册时，当请求端192.168.2.161使用BOL或xlite等发送注册消息给192.168.2.89服务器时，服务器对192.168.2.161发送“401 Unauthorized”信息给请求端，提示请求段需要带上鉴权信息重新注册，请求端带上鉴权信息后（带有“Authorization”头字段）重新向服务器注册，服务器验证鉴权头的正确性，如果鉴权成功，给请求端发送200 OK消息。若失败，继续发送401消息。
       第一步：请求端（192.168.2.161）发送REGISTER消息，参考消息如下：

Via: SIP/2.0/UDP 192.168.2.161:8021

Max-Forwards: 70

From: <sip:01062237493@192.168.2.89>;tag=efca469543ce4788a6a6a2c7b66cd01f;epid=de4504430d

To: <sip:01062237493@192.168.2.89>

Call-ID: c88a247a74b54a8c9e676bdde3bba6c9@192.168.2.161

CSeq: 1 REGISTER

Contact: <sip:192.168.2.161:8021>;methods="INVITE, MESSAGE, INFO, SUBSCRIBE, OPTIONS, BYE, CANCEL, NOTIFY, ACK, REFER"

User-Agent: RTC/1.2.4949 (BOL SIP Phone 1005)

Event: registration

Allow-Events: presence

Content-Length: 0

第二步：服务器端（192.168.2.89）检查到需要鉴权，给请求端发送401结果码，并带上“WWW-Authenticate”头信息，参考消息如下：

SIP/2.0 401 Unauthorized

Via: SIP/2.0/UDP 192.168.2.161:8021

From: <sip:01062237493@192.168.2.89>;tag=efca469543ce4788a6a6a2c7b66cd01f;epid=de4504430d

To: <sip:01062237493@192.168.2.89>;tag=-001893-38ba013ba3dde36e

Call-ID: c88a247a74b54a8c9e676bdde3bba6c9@192.168.2.161

CSeq: 1 REGISTER

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: <sip:192.168.2.89:14010>

Content-Length: 0

WWW-Authenticate: Digest realm="192.168.2.89", qop="auth", nonce="e17d377c3d2d9c343e26576a7fd04738481dfc10", opaque="", stale=FALSE, algorithm=MD5

第三步：请求端（192.168.2.161）通过“Authorization”头字段带上鉴权头信息，发送一个新的REGISTER消息，参考消息如下：

Via: SIP/2.0/UDP 192.168.2.161:8021

Max-Forwards: 70

From: <sip:01062237493@192.168.2.89>;tag=efca469543ce4788a6a6a2c7b66cd01f;epid=de4504430d

To: <sip:01062237493@192.168.2.89>

Call-ID: c88a247a74b54a8c9e676bdde3bba6c9@192.168.2.161

CSeq: 2 REGISTER

Contact: <sip:192.168.2.161:8021>;methods="INVITE, MESSAGE, INFO, SUBSCRIBE, OPTIONS, BYE, CANCEL, NOTIFY, ACK, REFER"

User-Agent: RTC/1.2.4949 (BOL SIP Phone 1005)

Authorization: Digest username="01062237493", realm="192.168.2.89", qop=auth, algorithm=MD5, uri="sip:192.168.2.89", nonce="e17d377c3d2d9c343e26576a7fd04738481dfc10", nc=00000001, cnonce="12660455546344082314666316435946", response="f57e47ce03162293b9ced07362ce2b79"

Event: registration

Allow-Events: presence

Content-Length: 0

第四步：服务器端（192.168.2.89）验证鉴权信息的合法性，若验证成功，发送200 OK消息，参考消息如下：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.161:8021

From: <sip:01062237493@192.168.2.89>;tag=efca469543ce4788a6a6a2c7b66cd01f;epid=de4504430d

To: <sip:01062237493@192.168.2.89>;tag=-001894-a5eb977c8969aa51

Call-ID: c88a247a74b54a8c9e676bdde3bba6c9@192.168.2.161

CSeq: 2 REGISTER

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: sip:192.168.2.161:8021

Content-Length: 0

Expires: 3600

3、SUBSCRIBE消息
      1）头字段填写说明
      Call-id：                 必选
      CSeq：                 必选
      From：                 必选
      To：                        必选
      Max-Forwards：必选
      Via：                       必选
      Expires：                常用可选头
      2）消息实例
      请求端（192.168.2.161）给服务器端（192.168.2.89）发送SUBSCRIBE消息，参考消息如下：

SUBSCRIBE sip:01062237498@192.168.2.89:5060 SIP/2.0

Via: SIP/2.0/UDP 192.168.2.161:32092;branch=z9hG4bK-d87543-ec03ee3e022acf28-1--d87543-;rport

Max-Forwards: 70

Contact: <sip:01062237498@192.168.2.161:32092>

To: "01062237498"<sip:01062237498@192.168.2.89:5060>

From: "01062237498"<sip:01062237498@192.168.2.89:5060>;tag=e01c2548

Call-ID: NDQzMGE1MDMzYWU0NjRiYzMxMGY3NGUxMjBhMjBkNTQ.

CSeq: 1 SUBSCRIBE

Expires: 300

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, NOTIFY, MESSAGE, SUBSCRIBE, INFO

User-Agent: eyeBeam release 1011d stamp 40820

Event: message-summary

Content-Length: 0

服务器端（192.168.2.89）发送回执的200 OK信息，参考消息如下：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.161:32092;branch=z9hG4bK-d87543-ec03ee3e022acf28-1--d87543-;rport

From: "01062237498"<sip:01062237498@192.168.2.89:5060>;tag=e01c2548

To: "01062237498"<sip:01062237498@192.168.2.89:5060>

Call-ID: NDQzMGE1MDMzYWU0NjRiYzMxMGY3NGUxMjBhMjBkNTQ.

CSeq: 1 SUBSCRIBE

Content-Length: 0

4、INVITE消息
        1）头字段填写说明
        必选头域如下：
        Call-id
        Contact
        CSeq
        From
        To
        Max-Forwards
        Via
        Supported
        Allow
        常用可选头域：
        Accept
        Authorization
        Content-length
        Content-type
        Record-Route
        Route
        Require
        Proxy-Authorization
        Proxy-require
        P-asserted-identity
        P-prefered-identity
        Privacy
        2）非鉴权INVITE消息实例
        在这个实例中，笔者在本机（192.168.2.161）上使用BOL注册了17899998888号码，呼叫01062230001号码时发送INVITE消息给服务器（192.168.2.89）的软交换，发送INVITE消息参考如下：

INVITE sip:01062230001@192.168.2.89 SIP/2.0

Via: SIP/2.0/UDP 192.168.2.161:9545

Max-Forwards: 70

From: "Administrator" <sip:17899998888@192.168.2.89>;tag=2dc6e1000081463ba14f7db4e50b8643;epid=d6b5434cef

To: <sip:01062230001@192.168.2.89>

Call-ID: 31e72e80d5b04f52aba6cb8be8f3c0c0@192.168.2.161

CSeq: 1 INVITE

Contact: <sip:192.168.2.161:9545>

User-Agent: RTC/1.2

Content-Type: application/sdp

Content-Length: 691

v=0

o=- 0 0 IN IP4 192.168.2.161

s=session

c=IN IP4 192.168.2.161

b=CT:1000

t=0 0

m=audio 56284 RTP/AVP 97 111 112 6 0 8 4 5 3 101

k=base64:fGmazgf5GXZfJxZ27G9A7rxA4B7KX0pHrjYELKphPog

a=rtpmap:97 red/8000

a=rtpmap:111 SIREN/16000

a=fmtp:111 bitrate=16000

a=rtpmap:112 G7221/16000

a=fmtp:112 bitrate=24000

a=rtpmap:6 DVI4/16000

a=rtpmap:0 PCMU/8000

a=rtpmap:8 PCMA/8000

a=rtpmap:4 G723/8000

a=rtpmap:5 DVI4/8000

a=rtpmap:3 GSM/8000

a=rtpmap:101 telephone-event/8000

a=fmtp:101 0-16

a=encryption:optional

m=video 61432 RTP/AVP 34 31

k=base64:W5uTU8sIQjJVPWyRF31GZouVwAHFtE1cAmblK+mvDdI

a=recvonly

a=rtpmap:34 H263/90000

a=rtpmap:31 H261/90000

a=encryption:optional

其中m行表示支持的媒体编码，其中“m=audio 56284 RTP/AVP 97 111 112 6 0 8 4 5 3 101”指明了几种支持的音频媒体类型，“m=video 61432 RTP/AVP 34 31”指明了几种支持的视频媒体类型。软交换服务器（192.168.2.89）接收到INVITE消息后，即刻发送了100 trying消息，如下所示：

SIP/2.0 100 Trying

Via: SIP/2.0/UDP 192.168.2.161:9545

From: "Administrator" <sip:17899998888@192.168.2.89>;tag=2dc6e1000081463ba14f7db4e50b8643;epid=d6b5434cef

To: <sip:01062230001@192.168.2.89>

Call-ID: 31e72e80d5b04f52aba6cb8be8f3c0c0@192.168.2.161

CSeq: 1 INVITE

Content-Length: 0

软交换服务器（192.168.2.89）查找被叫号码消息，并发送INVITE消息给被叫的地址，接收到被叫的100 trying消息，而后接收到180 Ringing消息，软交换服务器给主叫方也发送180 Ringing消息，告知被叫已振铃，发送消息如下：（第一行可不关注，是笔者公司的底层打出的消息）：

[16:15:59] ===SIPTransaction Send SIP message (455 bytes) to 192.168.2.161:9545

SIP/2.0 180 Ringing

Via: SIP/2.0/UDP 192.168.2.161:9545

From: "Administrator" <sip:17899998888@192.168.2.89>;tag=2dc6e1000081463ba14f7db4e50b8643;epid=d6b5434cef

To: <sip:01062230001@192.168.2.89>;tag=-006773-7d10081ef45af150

Call-ID: 31e72e80d5b04f52aba6cb8be8f3c0c0@192.168.2.161

CSeq: 1 INVITE

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: <sip:192.168.2.89:14010>

Content-Length: 0

软交换服务器（192.168.2.89）接收到被叫的INVITE消息的200 OK消息，给主叫方也发送200 OK消息，消息参考如下：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.89:14010;branch=z9hG4bK--50c44f35

From: <sip:17899998888@192.168.2.89>;tag=-002221-d749165cdfed2151

To: <sip:01062230001@192.168.2.89>;tag=6b3e0000bf5c0000

Call-ID: fdfa416f8779a8701af1086b07879a65@192.168.2.89

CSeq: 1 INVITE

Contact: <sip:192.168.2.161:5060>

Content-Type: application/sdp

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Content-Length: 118

v=0

o=- 1 1 IN IP4 192.168.2.161

s=-

t=0 0

m=audio 19194 RTP/AVP 8

c=IN IP4 192.168.2.161

a=rtpmap:8 PCMA/8000

        3）签权INVITE消息实例

5、ACK消息
        1）头字段填写说明
        必选头域如下：
        Call-id
        Cseq
        From
        To
        Max-Forwords
        Via
        常用可选头域：
        Content-Length
        Content-Type
        Route
        2）消息实例
        在“4、INVITE消息”中讲到了主叫方接收到INVITE消息的200 消息后，接着给主叫方发送ACK消息，消息参考如下：

ACK sip:192.168.2.89:14010 SIP/2.0

Via: SIP/2.0/UDP 192.168.2.161:9545

Max-Forwards: 70

From: "Administrator" <sip:17899998888@192.168.2.89>;tag=2dc6e1000081463ba14f7db4e50b8643;epid=d6b5434cef

To: <sip:01062230001@192.168.2.89>;tag=-006773-7d10081ef45af150

Call-ID: 31e72e80d5b04f52aba6cb8be8f3c0c0@192.168.2.161

CSeq: 1 ACK

User-Agent: RTC/1.2

Content-Length: 0

6、BYE消息
        1）头字段填写说明
        必选头域如下：
        Call-id
        Cseq
        From
        To
        Max-Forwards
        Via
        常用可选头域：
        Content-Length
        Content-Type
        Route
        Reason
        2）消息实例
        本实例笔者在本机（192.168.2.161）上注册了17899998888号码，呼叫01062230001号码时发送INVITE消息给服务器（192.168.2.89）的软交换，并与呼叫的号码建立通话后，主叫方主动挂断时，BYE消息如下所示：

BYE sip:192.168.2.89:14010 SIP/2.0

Via: SIP/2.0/UDP 192.168.2.161:9545

Max-Forwards: 70

From: "Administrator" <sip:17899998888@192.168.2.89>;tag=2dc6e1000081463ba14f7db4e50b8643;epid=d6b5434cef

To: <sip:01062230001@192.168.2.89>;tag=-006773-7d10081ef45af150

Call-ID: 31e72e80d5b04f52aba6cb8be8f3c0c0@192.168.2.161

CSeq: 2 BYE

User-Agent: RTC/1.2

Content-Length: 0

服务器发送200 OK消息，参考实例如下：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.161:9545

From: "Administrator" <sip:17899998888@192.168.2.89>;tag=2dc6e1000081463ba14f7db4e50b8643;epid=d6b5434cef

To: <sip:01062230001@192.168.2.89>;tag=-006773-7d10081ef45af150

Call-ID: 31e72e80d5b04f52aba6cb8be8f3c0c0@192.168.2.161

CSeq: 2 BYE

Content-Length: 0

7、PRACK消息
        1）头字段填写说明
        必选头域如下：
        Call-id
        Cseq
        From
        To
        Max-Forwards
        Via
        RAck
        常用可选头域：
        Content-Type
        Content-Length
        2）消息实例
        如下是PRACK消息的参考实例：

PRACK sip:192.168.2.154:5060 SIP/2.0

CSeq: 2 PRACK

Call-ID: 0112114b0ca1d73c3fbdc7036e4672c8@huawei.com

Contact: <sip:01055554444@192.168.2.46>

Content-Length: 0

From: <sip:01055554444@192.168.2.154>;tag=6c789654

To: <sip:01062237400@192.168.2.154>;tag=0012-f1939f63004dbd16

Via: SIP/2.0/UDP 192.168.2.46;branch=z9hG4bK04982ba62

User-Agent: Huawei-MC820/1.0.0

Supported: 100rel

RAck: 1 1 INVITE

8、INFO消息
        1）头字段填写说明
        必选头域如下：
        Call-id
        Cseq
        From
        To
        Max-Forwards
        Via
        常用可选头域：
        Content-Type
        Content-Length
        Route
        2）消息实例
        在笔者开发过程中，媒体服务器与软交换服务器之间的使用的是INFO消息交互，如下消息为软交换服务器向媒体服务器发送的INFO消息（请求开始录音），参考如下：

INFO sip:192.168.2.89:14010 SIP/2.0

Call-ID: 52f3d02182b72d37c48cea5dd013a401@192.168.2.89

From: <sip:msml@minicc:5090>;tag=013913-74fa8415d2902b1c

To: <sip:as@cintel.net.cn>;tag=-00708-b879297623d39362

CSeq: 1 INFO

Via: SIP/2.0/UDP 192.168.2.89:5090;branch=z9hG4bKf06b482d

Max-Forwards: 30

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: <sip:192.168.2.89:5090>

Content-Type: application/msml+xml

Content-Length: 164

<?xml version="1.0" encoding="US-ASCII"?>

</event>

</msml>

如下是媒体服务器回送的200 OK消息，消息参考如下：

SIP/2.0 200 OK

Via: SIP/2.0/UDP 192.168.2.89:5090;branch=z9hG4bKf06b482d

From: <sip:msml@minicc:5090>;tag=013913-74fa8415d2902b1c

To: <sip:as@cintel.net.cn>;tag=-00708-b879297623d39362

Call-ID: 52f3d02182b72d37c48cea5dd013a401@192.168.2.89

CSeq: 1 INFO

Allow: INVITE,ACK,OPTIONS,BYE,CANCEL,REGISTER,INFO,UPDATE,PRACK,REFER,SUBSCRIBE,NOTIFY,MESSAGE

Contact: <sip:192.168.2.89:14010>

Content-Length: 0

9、OPTIONS消息
        1）头字段填写说明
        必选头域如下：
        Call-id
        Cseq
        From
        To
        Max-Forwords
        Via
        常用可选头域：
        Accept
        Allow
        Supported
        2）消息实例
        参考实例如下所示：

OPTIONS sip:user@carrier.com SIP/2.0

Via: SIP/2.0/UDP cavendish.kings.cambridge.edu.uk; branch=z0hG4bK1834

Max-Forwards: 70

To: <sip:user@proxy.carrier.com>

From: J.C. Maxwell <sip:james.maxwell@kings.cambridge.edu.uk>; tag=34

Call-ID: 9352812@cavendish.kings.cambridge.edu.uk

CSeq: 1 OPTIONS

Content-Length: 0

10、NOTIFY消息
参考消息实例如下所示：

NOTIFY sip:tyoung@parlour.elasticity.co.uk SIP/2.0

Via SIP/2.0/UDP cartouche.rosettastone.org:5060; branch=z9hG4bK3841323

Max-Forwards: 70

To: Thomas Young <sip:tyoung@elasticity.co.uk>; tag=1814

From: <sip:ptolemy@rosettastone.org>; tag=5363956k

Call-ID: 452k59252058dkfj34924lk34

CSeq: 3 NOTIFY

Contact: <sip:Ptolemy@cartouche.rosettastone.org>

Event: dialog

Subscription-State: active

Allow-Event: dialog

Content-Type: application/xml + dialog

Content-Length: 消息体长度

(xml格式的消息体

)

11、REFER消息
参考消息实例如下所示：

REFER sip:m.rejewski@biuroszyfrow.pl SIP/2.0"

Via SIP/2.0/UDP lab34.bletchleypark.co.uk:5060; branch=z9hG4bK932039

Max-Forwards: 69

To: <sip:m.rejewski@biuroszyfrow.pl>; tag=ACEBDC

From: Alan Turing <sip:turing@bletchleypark.co.uk>; tag=213424

Call-ID: 3419fak3kFD23s1A9dkl

CSeq; 5412 REFER

Refer-To: <sip:info@scherbius-ritter.com>

Content-Length: 0

posted on 2010-11-10 11:23 阿蜜果阅读(10725) 评论(0) 编辑收藏所属分类: 协议

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      生活将我们磨圆，是为了让我们滚得更远——“圆”来如此。
      我的作品：
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