SIPp測試freeswitch用戶注冊

本文轉載自查看原文 2021-05-23 19:27 2823 sipp/ freeswitch/ 21.Others/ 16.linux/mac/ SIP/ 09.Open Source

默認情況下，撥打內部用戶時，freeswitch需要該用戶注冊了才能對其發起呼叫，否則會提示-ERR USER_NOT_REGISTERED

如果使用wireshark等工具，可以在本機使用voip終端工具注冊，抓包觀察一下SIP報文。

注：如果mac上首次使用wireshark時，可能會遇到 you don't have permission to capture on that device mac 之類的權限問題，可參考網友“水麒麟灬”的文章解決。

通過抓包，可以看到大致過程如下：

這4次的報文內容類似下面這樣：

1、第1次REGISTER

Frame 1: 650 bytes on wire (5200 bits), 650 bytes captured (5200 bits) on interface lo0, id 0
Null/Loopback
Internet Protocol Version 4, Src: 192.168.7.101, Dst: 192.168.7.101
User Datagram Protocol, Src Port: 5060, Dst Port: 5070
Session Initiation Protocol (REGISTER)
    Request-Line: REGISTER sip:192.168.7.101:5070;transport=UDP SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 192.168.7.101:5060;branch=z9hG4bK-d8754z-f407689eddfdf19c-1---d8754z-;rport
            Transport: UDP
            Sent-by Address: 192.168.7.101
            Sent-by port: 5060
            Branch: z9hG4bK-d8754z-f407689eddfdf19c-1---d8754z-
            RPort: rport
        Max-Forwards: 70
        Contact: <sip:1000@192.168.7.101:5060;rinstance=00eb482b7d4631f5>;transport=UDP
        To: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP
        From: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP;tag=e45e4f61
        Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.
        [Generated Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.]
        CSeq: 1 REGISTER
        Expires: 3600
        Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO
        User-Agent: Zoiper rev.1809
        Allow-Events: presence
        Content-Length: 0

首次注冊請求時，並未帶任何用戶名/密碼之類的認證信息。　

2、FreeSwitch返回了401

Frame 2: 718 bytes on wire (5744 bits), 718 bytes captured (5744 bits) on interface lo0, id 0
Null/Loopback
Internet Protocol Version 4, Src: 192.168.7.101, Dst: 192.168.7.101
User Datagram Protocol, Src Port: 5070, Dst Port: 5060
Session Initiation Protocol (401)
    Status-Line: SIP/2.0 401 Unauthorized
    Message Header
        Via: SIP/2.0/UDP 192.168.7.101:5060;branch=z9hG4bK-d8754z-f407689eddfdf19c-1---d8754z-;rport=5060
            Transport: UDP
            Sent-by Address: 192.168.7.101
            Sent-by port: 5060
            Branch: z9hG4bK-d8754z-f407689eddfdf19c-1---d8754z-
            RPort: 5060
        From: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=e45e4f61
        To: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=p8878HBS6XDrB
        Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.
        [Generated Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.]
        CSeq: 1 REGISTER
        User-Agent: FreeSWITCH-mod_sofia/1.10.2-release~64bit
        Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
        Supported: timer, path, replaces
        WWW-Authenticate: Digest realm="192.168.7.101", nonce="84af446e-92ed-418b-96c4-4ad9fee55771", algorithm=MD5, qop="auth"
            Authentication Scheme: Digest
            Realm: "192.168.7.101"
            Nonce Value: "84af446e-92ed-418b-96c4-4ad9fee55771"
            Algorithm: MD5
            QOP: "auth"
        Content-Length: 0

注意22行的WWW-Authenticate，服務器返回了認證需要的一些信息:realm/nonce/algoritthm/qop，大致可以看出要求使用MD5算法，讓Voip客戶端根據服務端返回的信息，算一個digest值提交上來完成校驗。

3、第2次REGISTER

Frame 3: 904 bytes on wire (7232 bits), 904 bytes captured (7232 bits) on interface lo0, id 0
Null/Loopback
Internet Protocol Version 4, Src: 192.168.7.101, Dst: 192.168.7.101
User Datagram Protocol, Src Port: 5060, Dst Port: 5070
Session Initiation Protocol (REGISTER)
    Request-Line: REGISTER sip:192.168.7.101:5070;transport=UDP SIP/2.0
    Message Header
        Via: SIP/2.0/UDP 192.168.7.101:5060;branch=z9hG4bK-d8754z-b6526a3ade0f8d5b-1---d8754z-;rport
            Transport: UDP
            Sent-by Address: 192.168.7.101
            Sent-by port: 5060
            Branch: z9hG4bK-d8754z-b6526a3ade0f8d5b-1---d8754z-
            RPort: rport
        Max-Forwards: 70
        Contact: <sip:1000@192.168.7.101:5060;rinstance=00eb482b7d4631f5>;transport=UDP
            Contact URI: sip:1000@192.168.7.101:5060;rinstance=00eb482b7d4631f5
            Contact parameter: transport=UDP
        To: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP
            SIP to display info: "jimmy"
            SIP to address: sip:1000@192.168.7.101:5070
                SIP to address User Part: 1000
                SIP to address Host Part: 192.168.7.101
                SIP to address Host Port: 5070
        From: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP;tag=e45e4f61
            SIP from display info: "jimmy"
            SIP from address: sip:1000@192.168.7.101:5070
                SIP from address User Part: 1000
                SIP from address Host Part: 192.168.7.101
                SIP from address Host Port: 5070
            SIP from tag: e45e4f61
        Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.
        [Generated Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.]
        CSeq: 2 REGISTER
        Expires: 3600
        Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO
        User-Agent: Zoiper rev.1809
         [truncated]Authorization: Digest username="1000",realm="192.168.7.101",nonce="84af446e-92ed-418b-96c4-4ad9fee55771",uri="sip:192.168.7.101:5070;transport=UDP",response="de6d3ab9e4a984d1a7a62d69cd00a31a",cnonce="c7dafa660149cc55",nc=00000
            Authentication Scheme: Digest
            Username: "1000"
            Realm: "192.168.7.101"
            Nonce Value: "84af446e-92ed-418b-96c4-4ad9fee55771"
            Authentication URI: "sip:192.168.7.101:5070;transport=UDP"
            Digest Authentication Response: "de6d3ab9e4a984d1a7a62d69cd00a31a"
            CNonce Value: "c7dafa660149cc55"
            Nonce Count: 00000001
            QOP: auth
            Algorithm: MD5
        Allow-Events: presence
        Content-Length: 0

可以看到，第2次注冊時，37行Authorization 帶上了username，uri 以及根據服務端要求，計算出來的response digest，以及客戶端的臨時cnonce值。

注：如果對digest計算過程感興趣的同學，可以參考 RFC3261規范及網友的文章

4、FreeSWITCH返回200

Frame 4: 704 bytes on wire (5632 bits), 704 bytes captured (5632 bits) on interface lo0, id 0
Null/Loopback
Internet Protocol Version 4, Src: 192.168.7.101, Dst: 192.168.7.101
User Datagram Protocol, Src Port: 5070, Dst Port: 5060
Session Initiation Protocol (200)
    Status-Line: SIP/2.0 200 OK
    Message Header
        Via: SIP/2.0/UDP 192.168.7.101:5060;branch=z9hG4bK-d8754z-b6526a3ade0f8d5b-1---d8754z-;rport=5060
            Transport: UDP
            Sent-by Address: 192.168.7.101
            Sent-by port: 5060
            Branch: z9hG4bK-d8754z-b6526a3ade0f8d5b-1---d8754z-
            RPort: 5060
        From: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=e45e4f61
            SIP from display info: "jimmy"
            SIP from address: sip:1000@192.168.7.101:5070
                SIP from address User Part: 1000
                SIP from address Host Part: 192.168.7.101
                SIP from address Host Port: 5070
            SIP from tag: e45e4f61
        To: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=QH20aDvv363aQ
            SIP to display info: "jimmy"
            SIP to address: sip:1000@192.168.7.101:5070
                SIP to address User Part: 1000
                SIP to address Host Part: 192.168.7.101
                SIP to address Host Port: 5070
            SIP to tag: QH20aDvv363aQ
        Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.
        [Generated Call-ID: ZGEwYTJkMGY1ODQ2M2Q3ZmY3YWQ3M2JkYWVhODMzNGE.]
        CSeq: 2 REGISTER
        Contact: <sip:1000@192.168.7.101:5060;rinstance=00eb482b7d4631f5>;expires=3600
            Contact URI: sip:1000@192.168.7.101:5060;rinstance=00eb482b7d4631f5
            Contact parameter: expires=3600
        Date: Sun, 23 May 2021 10:23:16 GMT
        User-Agent: FreeSWITCH-mod_sofia/1.10.2-release~64bit
        Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
        Supported: timer, path, replaces
        Content-Length: 0

FreeSWITCH收到提交過來的認證信息后，進行驗證，驗證通過后，返回200。(注：如校驗失敗，仍會返回401)。

大致了解注冊過程后，下面來看看SIPp如何測試這個場景：

先寫xml文件：reg.xml

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="register">
 5   <send retrans="500">
 6     <![CDATA[
 7       REGISTER sip:[remote_ip] SIP/2.0
 8       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
 9       Max-Forwards: 70
10       Contact: sip:[field0]@[local_ip]:[local_port]
11       To: [field0] <sip:[field0]@[remote_ip]:[remote_port]>
12       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[call_number]
13       Call-ID: [call_id]
14       CSeq: 1 REGISTER
15       Expires: 3600
16       User-Agent: SIPp
17       Content-Length: 0
18     ]]>
19   </send>
20 
21  <recv response="401" auth="true">
22  </recv>
23 
24 <send retrans="500">
25     <![CDATA[
26       REGISTER sip:[field0]@[remote_ip]:[remote_port] SIP/2.0
27       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
28       Max-Forwards: 70
29       Contact: sip:[field0]@[local_ip]:[local_port]
30       [field1]
31       To: [field0] <sip:[field0]@[remote_ip]:[remote_port]>
32       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[call_number]
33       Call-ID: [call_id]
34       CSeq: 2 REGISTER
35       Expires: 3600
36       User-Agent: SIPp
37       Content-Length: [len]
38     ]]>
39   </send>
40 
41   <recv response="200">
42   </recv>
43 
44   <!-- Keep the call open for a while in case the 200 is lost to be     -->
45   <!-- able to retransmit it if we receive the 200 again.               -->
46   <timewait milliseconds="500"/>
47 
48   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
49   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
50 </scenario>

View Code

第1次REGISTER的SIP內容好寫，但是第2次時，最終計算出來的response md5值如何處理，難道要自己算嗎？當然不用！

SIPp已經按照規范，內部實現了這個digest的計算過程，只需要參考SIPp文檔中的“SIP authentication”，第2次發起REGISTER時，把username放在單獨的一行中即可(xml中的第30行)

最終執行時， SIPp會根據類似下面的csv文件：reg.csv

SEQUENTIAL
1000;[authentication username=1000 password=1234]
1001;[authentication username=1001 password=1234]
1002;[authentication username=1002 password=1234]
1003;[authentication username=1003 password=1234]
1004;[authentication username=1004 password=1234]
1005;[authentication username=1005 password=1234]
1006;[authentication username=1006 password=1234]
1007;[authentication username=1007 password=1234]
1008;[authentication username=1008 password=1234]
1009;[authentication username=1009 password=1234]
1010;[authentication username=1010 password=1234]
1011;[authentication username=1011 password=1234]
1012;[authentication username=1012 password=1234]
1013;[authentication username=1013 password=1234]
1014;[authentication username=1014 password=1234]
1015;[authentication username=1015 password=1234]
1016;[authentication username=1016 password=1234]
1017;[authentication username=1017 password=1234]
1018;[authentication username=1018 password=1234]
1019;[authentication username=1019 password=1234]

動態從該文件中，取出username及password，然后計算出digest值，發給FreeSWITCH。

運行一下：

sipp 192.168.7.101:5070 -sf reg.xml -inf reg.csv -d 1000 -trace_err -m 20  -aa

注：其中192.168.7.101:5070 為FreeSWITCH的ip和端口。

順利的話，會看出類似上面的結果，freeswitch中也可以通過命令驗證：

可以看到20個用戶注冊成功，挑其中1個用戶1001看下詳情：

EXP括號里的內容為過期時間，Auth-User為用戶名，Agent可以看到是通過是SIPp注冊的。

最后提醒一下：需要注冊的用戶，必須是FreeSWITCH中創建好的用戶，如果不存在的用戶，比如:8888

SEQUENTIAL
8888;[authentication username=8888 password=1234]

測試時，FreeSWITCH會返回403

SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-48936-1-2
From: 8888 <sip:8888@192.168.7.101:5061>;tag=1
To: 8888 <sip:8888@192.168.7.101:5070>;tag=07jyp9tgU8r2c
Call-ID: 1-48936@192.168.7.101
CSeq: 2 REGISTER
User-Agent: FreeSWITCH-mod_sofia/1.10.2-release~64bit
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
Supported: timer, path, replaces
Content-Length: 0

從FreeSWITCH控制台，也能觀察到錯誤輸入：

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