--todo 有空再搞

MicroSIP 向 FreeSWITCH 注册，transport 设置为 tls

同时 Media Encryption 设置为强制

FreeSWITCH 做一个这样的路由：

<action application="set" data="rtp_secure_media=optional"/>
<action application="answer" data=""/>
<action application="echo" data=""/>

抓包， MicroSIP 呼叫，Wireshark 打开 pcap

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试了试，还没搞出来，可能是加密套件方面的问题，wireshark 解不出来，还在研究中

但很奇怪，我查过之前的笔记，可以搞出来的，不知道到底怎么回事了

有没有人总是测试成功？写篇文章分享下经验如何？

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可以参考的链接有：

https://osqa-ask.wireshark.org/questions/64151/sip-tls-is-only-shown-as-tcp/https://stackoverflow.com/questions/10162669/how-can-i-decode-sip-tls-non-default-sips-port-packets-through-wiresharkhttps://wiki.4psa.com/display/KB/How+to+decode+SIP+over+TLS+with+Wiresharkhttps://www.youtube.com/watch?v=J4Mam3RyxNshttps://www.zoiper.com/en/support/home/article/162/How%20to%20decode%20SIP%20over%20TLS%20with%20Wireshark%20and%20Decrypting%20SDES%20Protected%20SRTP%20Stream