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sipp学习笔记

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菩提树下的杨过
发布2021-05-18 12:26:18
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发布2021-05-18 12:26:18
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sipp是一个针对SIP协议进行测试的免费开源工具,可运行于windows/mac/linux,官方地址:http://sipp.sourceforge.net/

一、安装

本文只介绍mac上的安装方式,其它平台(windows/linux)的安装,可参考官方文档 (注:感谢黄龙舟做的中文翻译)

brew install sipp

mac上,直接用brew 一行命令搞定安装,完成后,可用sipp -v查看版本号,参见下图,目前的版本号是SIPp v3.6.0-PCAP-RTPSTREAM

二、uac/uas初体验

安装好以后,相信大家已经等不及要体验一把,既然是打电话,就得有“主叫方(uac)”和“被叫方(uas)” (注:对uac、uas第1次接触的同学,建议先移步 SIP协议学习笔记

2.1 启动内置的uas场景

sipp -sn uas

如上图所示,启动uas后,会在本机开1个端口5061,然后下面会一些SIP信令的实时统计,INVITE文字在“右方向箭头”右侧,表示当前收到的INVITE请求数,180左侧的“左方向箭头”表示回应的振铃消息数。现在只有被叫,并没有主叫来电,所以Messages这一栏全是0

2.2 启动内置的uac场景

sipp -sn uac 127.0.0.1:5061

注:最后的“ip:端口”,即为上一步uas启动的ip地址和端口号,必须匹配。

此时,再回到uas的界面,Messages栏,就不再全是0了

这样,主叫方(uac)打电话,被叫方(uas)接电话,基本的呼叫流程就通了。

三、理解配置文件

流程虽然跑通了,可能有同学会好奇,uas/uac这2个内置场景,具体逻辑长啥样?为什么uac的界面,会有100/180/183这些响应码,没有其它4xx或5xx之类的码?除uac/uas,还有其它内置场景吗?

如上图,直接输入sipp,会看到有很多参数说明,其中-sn 表示加载默认的场景,除了uas/uac,还有regexp/branchc/branchs...等其它场景,有兴趣的同学可以每种场景都试一下。

另外,还有一个很有用的-sd参数,可以把默认的场景配置,直接导出来,参考下面的命令:

这样,就把默认的uac/uas这2个场景,导出成xml文件,方便后续研究。打开这2个文件看一下:

3.1 uac.xml

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="Basic Sipstone UAC">
 5   <send retrans="500">
 6     <![CDATA[
 7 
 8       INVITE sip:[service]@[remote_ip]:[remote_port] SIP/2.0
 9       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
10       From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
11       To: [service] <sip:[service]@[remote_ip]:[remote_port]>
12       Call-ID: [call_id]
13       CSeq: 1 INVITE
14       Contact: sip:sipp@[local_ip]:[local_port]
15       Max-Forwards: 70
16       Subject: Performance Test
17       Content-Type: application/sdp
18       Content-Length: [len]
19 
20       v=0
21       o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
22       s=-
23       c=IN IP[media_ip_type] [media_ip]
24       t=0 0
25       m=audio [media_port] RTP/AVP 0
26       a=rtpmap:0 PCMU/8000
27 
28     ]]>
29   </send>
30 
31   <recv response="100"
32         optional="true">
33   </recv>
34 
35   <recv response="180" optional="true">
36   </recv>
37 
38   <recv response="183" optional="true">
39   </recv>
40 
41   <recv response="200" rtd="true">
42   </recv>
43 
44   <!-- Packet lost can be simulated in any send/recv message by         -->
45   <!-- by adding the 'lost = "10"'. Value can be [1-100] percent.       -->
46   <send>
47     <![CDATA[
48 
49       ACK sip:[service]@[remote_ip]:[remote_port] SIP/2.0
50       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
51       From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
52       To: [service] <sip:[service]@[remote_ip]:[remote_port]>[peer_tag_param]
53       Call-ID: [call_id]
54       CSeq: 1 ACK
55       Contact: sip:sipp@[local_ip]:[local_port]
56       Max-Forwards: 70
57       Subject: Performance Test
58       Content-Length: 0
59 
60     ]]>
61   </send>
62 
63   <!-- This delay can be customized by the -d command-line option       -->
64   <pause/>
65 
66   <send retrans="500">
67     <![CDATA[
68 
69       BYE sip:[service]@[remote_ip]:[remote_port] SIP/2.0
70       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
71       From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
72       To: [service] <sip:[service]@[remote_ip]:[remote_port]>[peer_tag_param]
73       Call-ID: [call_id]
74       CSeq: 2 BYE
75       Contact: sip:sipp@[local_ip]:[local_port]
76       Max-Forwards: 70
77       Subject: Performance Test
78       Content-Length: 0
79 
80     ]]>
81   </send>
82 
83   <recv response="200" crlf="true">
84   </recv>
85 
86   <!-- definition of the response time repartition table (unit is ms)   -->
87   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
88 
89   <!-- definition of the call length repartition table (unit is ms)     -->
90   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
91 
92 </scenario>

看着貌似一大堆,有点吓人,但并不难理解:

a) 5-29行,第一段send,发送INVITE信令,即:准备打电话

b) 接下来的31-39行,表示期待收到被叫方回过来的100/180/183响应,注意这3小段,都是optional=true,表示预期的响应是可选的,即:对方可以发100/180/183,也可以不发。通俗点讲,打一通电话过去,对方可能振铃或不振铃(比如:对方已经在通话中,或者话机有问题)

c) 41行,期待对方回200过来,这里没有optional=true,表示不是可选的,如果收不到,就无法继续。

d) 46-61行,表示上一步收到200后,主叫方发送ACK确认

e) 64行,pause暂停,但是并没有指定暂停多久,看注释,可以在启动uac时,传入“-d 暂停时间”指定,这一行相当于电话接起来,模拟双方在通话,让电话先不要断。

f) 66-81行,表示uac发出bye挂断信令,结束通话,注 retrans="500",表示如果发送失败,500ms后,会重发。

3.2 uas.xml

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="Basic UAS responder">
 5 
 6   <recv request="INVITE" crlf="true">
 7   </recv>
 8 
 9   <send>
10     <![CDATA[
11 
12       SIP/2.0 180 Ringing
13       [last_Via:]
14       [last_From:]
15       [last_To:];tag=[pid]SIPpTag01[call_number]
16       [last_Call-ID:]
17       [last_CSeq:]
18       Contact: <sip:[local_ip]:[local_port];transport=[transport]>
19       Content-Length: 0
20 
21     ]]>
22   </send>
23 
24   <send retrans="500">
25     <![CDATA[
26 
27       SIP/2.0 200 OK
28       [last_Via:]
29       [last_From:]
30       [last_To:];tag=[pid]SIPpTag01[call_number]
31       [last_Call-ID:]
32       [last_CSeq:]
33       Contact: <sip:[local_ip]:[local_port];transport=[transport]>
34       Content-Type: application/sdp
35       Content-Length: [len]
36 
37       v=0
38       o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
39       s=-
40       c=IN IP[media_ip_type] [media_ip]
41       t=0 0
42       m=audio [media_port] RTP/AVP 0
43       a=rtpmap:0 PCMU/8000
44 
45     ]]>
46   </send>
47 
48   <recv request="ACK"
49         optional="true"
50         rtd="true"
51         crlf="true">
52   </recv>
53 
54   <recv request="BYE">
55   </recv>
56 
57   <send>
58     <![CDATA[
59 
60       SIP/2.0 200 OK
61       [last_Via:]
62       [last_From:]
63       [last_To:]
64       [last_Call-ID:]
65       [last_CSeq:]
66       Contact: <sip:[local_ip]:[local_port];transport=[transport]>
67       Content-Length: 0
68 
69     ]]>
70   </send>
71 
72   <!-- Keep the call open for a while in case the 200 is lost to be     -->
73   <!-- able to retransmit it if we receive the BYE again.               -->
74   <timewait milliseconds="4000"/>
75 
76   <!-- definition of the response time repartition table (unit is ms)   -->
77   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
78 
79   <!-- definition of the call length repartition table (unit is ms)     -->
80   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
81 
82 </scenario>

a) 6-7行,等待主叫方发送INVITE信令。

b) 9-22行收到主叫方的INVITE请求后,先send 180响应,表示振铃。

c) 24-46行,发送200 响应,表示被叫方已经ready.

d) 48-52行,期待对应发过来ACK确认(注:optional=true,表示可选),至此,通话已经建立。

e) 54-55行,等待被叫方发送挂断信令BYE

f) 57-70行,发送200,通知主叫方挂断完成。

g) 74行,等4秒,防止上一步的200响应由于网络原因丢失,留4秒余量,让对方重发BYE信令。

3.3 自定义scenario配置

除了内置的几种场景,我们也可以自定义xml配置文件,比如:我们把内置的uas.xml/uac.xml简化一下,让主叫方发起呼叫后,被叫方直接挂断(即:模拟被挂方拒接)

uac2.xml

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="Basic Sipstone UAC">
 5 
 6   <send retrans="500">
 7     <![CDATA[
 8 
 9       INVITE sip:[service]@[remote_ip]:[remote_port] SIP/2.0
10       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
11       From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
12       To: [service] <sip:[service]@[remote_ip]:[remote_port]>
13       Call-ID: [call_id]
14       CSeq: 1 INVITE
15       Contact: sip:sipp@[local_ip]:[local_port]
16       Max-Forwards: 70
17       Subject: Performance Test
18       Content-Type: application/sdp
19       Content-Length: [len]
20 
21       v=0
22       o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
23       s=-
24       c=IN IP[media_ip_type] [media_ip]
25       t=0 0
26       m=audio [media_port] RTP/AVP 0
27       a=rtpmap:0 PCMU/8000
28 
29     ]]>
30   </send>
31 
32   <recv response="200" rtd="true">
33   </recv>
34 
35   <send retrans="500">
36     <![CDATA[
37 
38       BYE sip:[service]@[remote_ip]:[remote_port] SIP/2.0
39       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
40       From: sipp <sip:sipp@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
41       To: [service] <sip:[service]@[remote_ip]:[remote_port]>[peer_tag_param]
42       Call-ID: [call_id]
43       CSeq: 2 BYE
44       Contact: sip:sipp@[local_ip]:[local_port]
45       Max-Forwards: 70
46       Subject: Performance Test
47       Content-Length: 0
48 
49     ]]>
50   </send>
51 
52   <!-- definition of the response time repartition table (unit is ms)   -->
53   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
54 
55   <!-- definition of the call length repartition table (unit is ms)     -->
56   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
57 
58 </scenario>

uas2.xml

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="Basic UAS responder">
 5 
 6   <recv request="INVITE" crlf="true">
 7   </recv>
 8 
 9   <send retrans="500">
10     <![CDATA[
11 
12       SIP/2.0 200 OK
13       [last_Via:]
14       [last_From:]
15       [last_To:];tag=[pid]SIPpTag01[call_number]
16       [last_Call-ID:]
17       [last_CSeq:]
18       Contact: <sip:[local_ip]:[local_port];transport=[transport]>
19       Content-Type: application/sdp
20       Content-Length: [len]
21 
22       v=0
23       o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
24       s=-
25       c=IN IP[media_ip_type] [media_ip]
26       t=0 0
27       m=audio [media_port] RTP/AVP 0
28       a=rtpmap:0 PCMU/8000
29 
30     ]]>
31   </send>
32 
33   <recv request="BYE">
34   </recv>
35 
36   <!-- definition of the response time repartition table (unit is ms)   -->
37   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
38 
39   <!-- definition of the call length repartition table (unit is ms)     -->
40   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
41 
42 </scenario>

使用时,可以用参数-sf加载xml文件

三、使用数据文件

3.1 简单数据文件

测试时,通常需要模拟不同的主被叫号码,前面的测试中,可能有同学注意到了uac.xml中,From/To是写死的用户sipp,能否动态替换用户名呢?当然可以!

SEQUENTIAL
#This line will be ignored
1001;1019
1002;1018
1003;1017
1004;1016

创建一个uac_data.csv的文件,内容参考上面。第1行的SEQUENTIAL表示顺序读取,#行表示注释,第3行开始,定义数据行,每行2列,在uac.xml配置文件中,可以用field0、field1来占位替换,即:

重新跑一下uac场景,这次要新加参数 -inf uac_data.csv,同时为了方便验证SIP报文内容,加上-trace_msg

sipp -sf uac.xml -inf uac_data.csv 127.0.0.1:5060  -trace_msg 

跑起来后,应该在当前目录生成类似uac_xxx_messages.log的日志文件,打开看看占位符field0/field1是否被替换了。

3.2 动态数据文件

如果模拟的主/被号很多,一行行手动写有点麻烦,可以用下面的方式自动生成

SEQUENTIAL,PRINTF=999
1%03d;2%03d

其中PRINTF=N,表示生成多少行,而下面的%03d为占位符,真正运行时,会生成

SEQUENTIAL,PRINTF=999
1000;2000
1001;2001
1002;2002
1003;2003
...

四、与freeswitch交互

假设要自动测试1个场景:主叫方拨打1开头的内线号码 ,被叫方自动应答。可以在freeswitch的diaplan里,加这么一段:(注:mac上默认的配置文件为/usr/local/freeswitch/conf/dialplan/default.xml)

1 <extension name="auto-answer-sample">
2       <condition field="destination_number" expression="^10\d+$">
3                   <action application="log" data="******** auto-answer-and-echo **********"/>
4                   <action application="answer"/>
5                   <action application="echo"/>
6       </condition>
7 </extension>

然后用软电话工具,测试一下:

如上图,用zoiper终端,以1000身份注册到freeswitch后,拨打1010号码 ,在freeswitch的控制台,看到已经自动接听,然后echo,说明diaplan确实生效了。

用sipp如何来自动测试这一场景呢?显然对于sipp来说,这是一个uac场景,我们写一段uac_auto_answer.xml

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="uac_auto_answer_test">
 5 
 6   <!-- 发起呼叫 -->
 7   <send retrans="500">
 8     <![CDATA[
 9 
10       INVITE sip:[field1]@[remote_ip]:[remote_port] SIP/2.0
11       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
12       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
13       To: [field1] <sip:[field1]@[remote_ip]:[remote_port]>
14       Call-ID: [call_id]
15       CSeq: 1 INVITE
16       Contact: sip:[field0]@[local_ip]:[local_port]
17       Max-Forwards: 70
18       Subject: Performance Test
19       Content-Type: application/sdp
20       Content-Length: [len]
21 
22       v=0
23       o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
24       s=-
25       c=IN IP[media_ip_type] [media_ip]
26       t=0 0
27       m=audio [media_port] RTP/AVP 0
28       a=rtpmap:0 PCMU/8000
29 
30     ]]>
31   </send>
32 
33   <!-- 期待freeswitch回200 -->
34   <recv response="200" rtd="true">
35   </recv>
36 
37   <!-- 期望电话接通后,暂停,由-d参数控制通话时长 -->
38   <pause/>
39 
40   <!-- 通话结束后,自动挂断 -->
41   <send retrans="500">
42     <![CDATA[
43 
44       BYE sip:[field1]@[remote_ip]:[remote_port] SIP/2.0
45       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
46       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
47       To: [field1] <sip:[field1]@[remote_ip]:[remote_port]>[peer_tag_param]
48       Call-ID: [call_id]
49       CSeq: 2 BYE
50       Contact: sip:[field0]@[local_ip]:[local_port]
51       Max-Forwards: 70
52       Subject: Performance Test
53       Content-Length: 0
54 
55     ]]>
56   </send>
57 
58   <!-- definition of the response time repartition table (unit is ms)   -->
59   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
60 
61   <!-- definition of the call length repartition table (unit is ms)     -->
62   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
63 
64 </scenario>

看上去,貌似没啥问题,定义相应的数据文件uac_auto_answer_data.csv

SEQUENTIAL
#callerNumber,destNumber
1000;1010
1001;1011

跑一把:

sipp -sf uac_auto_answer.xml -inf uac_auto_answer_data.csv 192.168.7.101:5070 -l 1 -d 10000 -trace_msg -trace_err

其中192.168.7.101:5070 为本机freeswitch的ip和端口号

可以看到,并没有预期的200响应,freeswitch的控制台上,也没看到预期的answer, echo响应

查看sipp生成的error日志,可以看到

'2021-05-16 15:12:01.801909 1621149121.801909: Aborting call on unexpected message for Call-Id '14-90540@192.168.7.101': while expecting '200' (index 1), received 'SIP/2.0 407 Proxy Authentication Required 

很多这种错误:received 'SIP/2.0 407 Proxy Authentication Required,凭经验,但凡跟Authentication相关的,多半跟验证有关。

先关闭freeswitch的auth验证,方法如下:

a) /usr/local/freeswitch/conf/vars.xml中,把 internal_auth_calls改成false

<X-PRE-PROCESS cmd="set" data="internal_auth_calls=false"/>

b) /usr/local/freeswitch/conf/autoload_configs/acl.conf.xml

1 <list name="domains" default="deny">
2   <!-- domain= is special it scans the domain from the directory to build the ACL -->
3   <node type="allow" domain="$${domain}"/>
4   <!-- use cidr= if you wish to allow ip ranges to this domains acl. -->
5   <!-- 把执行sipp机器所在网段,加入到allow列表 -->
6   <node type="allow" cidr="192.168.7.0/24"/>
7 </list>

参考第6行,把相应的网段加到allow列表里。

重启freeswitch后,再跑一把,会发现仍然没有预期的返回,sipp终端的messages列,期望的200仍然没有返回。此时freeswitch控制台,有下列输出:

同时sipp的错误日志时,有很多487的返回:

'2021-05-16 15:31:48.012115 1621150308.012115: Dead call 1-96258@192.168.7.101 (aborted at index 1), received 'SIP/2.0 487 Request Terminated

说明freeswitch的SIP返回报文,跟我们想得不一样,并不是直接返回了200,这时候就要祭出大招:tcpdump抓包工具(注:这里故意为了演示如何使用抓包工具,如果对freeswitch有经验的同学,可能一眼就能看出freeswitch会先返回100响应码)

如何抓包,也要有思路,既然用zoiper软电话工具,能正常跑通,说明freeswitch肯定是没问题的,那我们就抓zoiper与freeswitch之间的SIP包,抓包步骤:

先确认要抓哪块网卡:

tcpdump -D会列出本机所有网卡,然后用ifconfig看下各网卡的ip

本文所有测试,都是在mac笔记本上执行的,跟freeswitch相关的ip,只有127.0.0.1及192.168.7.101,也就是上图中的网卡lo0、en0

注:可能有同学会问,5070在上图中,lsof -i:5070,不就只有192.168.7.101吗?为啥还要关注127.0.0.1 ?

输入命令:

sudo tcpdump -i en0 port 5070 -vv -w sip_en0.log

即:抓取网卡en0上,端口号为5070的数据包,并将结果写入sip_en0.log中。抓包工具开启后,软电话zoiper呼叫1010,奇怪的是电话接通后,tcpdump里Got 0,也就是并未抓到数据!

然后尝试抓取127.0.0.1所在网卡lo0,同样的操作,这次有数据了!(这也就解释了前面的为什么要关注127.0.0.1所在网卡的原因)

打开抓包的数据文件sip_lo0.log,大致内容如下(已做了整理,方便阅读):

# 1、 Zoiper向freeswitch 发送INVITE
INVITE sip:1011@192.168.7.101:5070;transport=UDP SIP/2.0
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-d8754z-37e95a74eab22936-1---d8754z-;rport
Max-Forwards: 70
Contact: <sip:1000@192.168.7.101:5061>
To: <sip:1011@192.168.7.101:5070>;transport=UDP
From: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP;tag=cfb0773d
Call-ID: ZjFmMTExZThiNGE5ZWM3YzNiZTMyNWY0ZWUxMTVkMTE.
CSeq: 1 INVITE
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, NOTIFY, REFER, MESSAGE, OPTIONS, INFO
Content-Type: application/sdp
User-Agent: Zoiper rev.1809
Content-Length: 306

v=0
o=Z 0 0 IN IP4 192.168.7.101
s=Z
c=IN IP4 192.168.7.101
t=0 0
m=audio 8000 RTP/AVP 3 110 98 8 0 101
a=rtpmap:3 GSM/8000
a=rtpmap:110 speex/8000
a=rtpmap:98 iLBC/8000
a=fmtp:98 mode=30
a=rtpmap:8 PCMA/8000
a=rtpmap:0 PCMU/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-15
a=sendrecv

# 2、 Freeswitch回应100 Trying
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-d8754z-37e95a74eab22936-1---d8754z-;rport=5061
From: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=cfb0773d
To: <sip:1011@192.168.7.101:5070>;transport=UDP
Call-ID: ZjFmMTExZThiNGE5ZWM3YzNiZTMyNWY0ZWUxMTVkMTE.
CSeq: 1 INVITE
User-Agent: FreeSWITCH-mod_sofia/1.10.2-release~64bit
Content-Length: 0

# 3、 Freeswitch回应200 OK
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-d8754z-37e95a74eab22936-1---d8754z-;rport=5061
From: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=cfb0773d
To: <sip:1011@192.168.7.101:5070>;transport=UDP;tag=8BZ2eg0QStH7H
Call-ID: ZjFmMTExZThiNGE5ZWM3YzNiZTMyNWY0ZWUxMTVkMTE.
CSeq: 1 INVITE
Contact: <sip:1011@192.168.7.101:5070;transport=udp>
User-Agent: FreeSWITCH-mod_sofia/1.10.2-release~64bit
Accept: application/sdp
Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE, REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
Supported: timer, path, replaces
Allow-Events: talk, hold, conference, presence, as-feature-event, dialog, line-seize, call-info, sla, include-session-description, presence.winfo, message-summary, refer
Content-Type: application/sdp
Content-Disposition: session
Content-Length: 222
Remote-Party-ID: "1011" <sip:1011@192.168.7.101>;party=calling;privacy=off;screen=no

v=0
o=FreeSWITCH 1621133187 1621133188 IN IP4 192.168.7.101
s=FreeSWITCH
c=IN IP4 192.168.7.101
t=0 0
m=audio 18838 RTP/AVP 8 101
a=rtpmap:8 PCMA/8000
a=rtpmap:101 telephone-event/8000
a=fmtp:101 0-16
a=ptime:20

# 4、 Zoiper发送ACK
ACK sip:1011@192.168.7.101:5070;transport=udp SIP/2.0
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-d8754z-20ff2eafb70e0d57-1---d8754z-;rport
Max-Forwards: 70
Contact: <sip:1000@192.168.7.101:5061>
To: <sip:1011@192.168.7.101:5070>;transport=UDP;tag=8BZ2eg0QStH7H
From: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP;tag=cfb0773d
Call-ID: ZjFmMTExZThiNGE5ZWM3YzNiZTMyNWY0ZWUxMTVkMTE.
CSeq: 1 ACK
User-Agent: Zoiper rev.1809
Content-Length: 0

# 5、Zoiper发送BYE
BYE sip:1011@192.168.7.101:5070;transport=udp SIP/2.0
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-d8754z-f07268afb96f7be8-1---d8754z-;rport
Max-Forwards: 70
Contact: <sip:1000@192.168.7.101:5061>
To: <sip:1011@192.168.7.101:5070>;transport=UDP;tag=8BZ2eg0QStH7H
From: "jimmy"<sip:1000@192.168.7.101:5070>;transport=UDP;tag=cfb0773d
Call-ID: ZjFmMTExZThiNGE5ZWM3YzNiZTMyNWY0ZWUxMTVkMTE.
CSeq: 2 BYE
User-Agent: Zoiper rev.1809
Content-Length: 0

# 6、FreeSWITCH回应200
SIP/2.0 200 OK
Via: SIP/2.0/UDP 192.168.7.101:5061;branch=z9hG4bK-d8754z-f07268afb96f7be8-1---d8754z-;rport=5061
From: "jimmy" <sip:1000@192.168.7.101:5070>;transport=UDP;tag=cfb0773d
To: <sip:1011@192.168.7.101:5070>;transport=UDP;tag=8BZ2eg0QStH7H
Call-ID: ZjFmMTExZThiNGE5ZWM3YzNiZTMyNWY0ZWUxMTVkMTE.
CSeq: 2 BYE
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

可以发现,FreeSwitch收到INVITE后,并不是直接回的200,而是先回了100。所以uac的xml要调整一下:

 1 <?xml version="1.0" encoding="ISO-8859-1" ?>
 2 <!DOCTYPE scenario SYSTEM "sipp.dtd">
 3 
 4 <scenario name="Basic Sipstone UAC">
 5 
 6   <send retrans="500">
 7     <![CDATA[
 8 
 9       INVITE sip:[field1]@[remote_ip]:[remote_port] SIP/2.0
10       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
11       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
12       To: [field1] <sip:[field1]@[remote_ip]:[remote_port]>
13       Call-ID: [call_id]
14       CSeq: 1 INVITE
15       Contact: sip:[field0]@[local_ip]:[local_port]
16       Max-Forwards: 70
17       Subject: Performance Test
18       Content-Type: application/sdp
19       Content-Length: [len]
20 
21       v=0
22       o=user1 53655765 2353687637 IN IP[local_ip_type] [local_ip]
23       s=-
24       c=IN IP[media_ip_type] [media_ip]
25       t=0 0
26       m=audio [media_port] RTP/AVP 0
27       a=rtpmap:0 PCMU/8000
28 
29     ]]>
30   </send>
31 
32   <!-- 加上这个100的接收 -->
33   <recv response="100">
34   </recv>
35 
36   <recv response="200">
37   </recv>
38 
39   <!-- 从抓包来看,zoiper有发送了ACK,但是sipp加上后,一直发不成功,先注释掉 -->
40   <!-- <send retrans="500">
41     <![CDATA[
42 
43       ACK sip:[field1]@[remote_ip]:[remote_port] SIP/2.0
44       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
45       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
46       To: [field1] <sip:[field1]@[remote_ip]:[remote_port]>[peer_tag_param]
47       Call-ID: [call_id]
48       CSeq: 1 ACK
49       Contact: sip:[field0]@[local_ip]:[local_port]
50       Max-Forwards: 70
51       Subject: Performance Test
52       Content-Length: 0
53 
54     ]]>
55   </send> -->
56 
57   <pause/>
58 
59   <send retrans="500">
60     <![CDATA[
61       BYE sip:[field1]@[remote_ip]:[remote_port] SIP/2.0
62       Via: SIP/2.0/[transport] [local_ip]:[local_port];branch=[branch]
63       From: [field0] <sip:[field0]@[local_ip]:[local_port]>;tag=[pid]SIPpTag00[call_number]
64       To: [field1] <sip:[field1]@[remote_ip]:[remote_port]>[peer_tag_param]
65       Call-ID: [call_id]
66       CSeq: 2 BYE
67       Contact: sip:[field0]@[local_ip]:[local_port]
68       Max-Forwards: 70
69       Subject: Performance Test
70       Content-Length: 0
71     ]]>
72   </send>
73 
74   <!-- freeswitch收到BYE后,会回200 -->
75   <recv response="200">
76   </recv>
77 
78   <!-- definition of the response time repartition table (unit is ms)   -->
79   <ResponseTimeRepartition value="10, 20, 30, 40, 50, 100, 150, 200"/>
80 
81   <!-- definition of the call length repartition table (unit is ms)     -->
82   <CallLengthRepartition value="10, 50, 100, 500, 1000, 5000, 10000"/>
83 
84 </scenario>

然后再执行,终于跑起来了!

Freeswitch的控制台,也正常输出了answer, echo等信息

相信大家看完本文后,对sipp的使用已经入门了,如果遇到复杂场景,不知道如何写sipp xml时,建议多利用日志文件及抓包工具。

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原始发表:2021-05-16 ,如有侵权请联系 cloudcommunity@tencent.com 删除

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