海康威视网络搜索工具SADPTool原理（SSDP协议）239.255.255.250

海康威视网络搜索工具SADPTool原理（SSDP协议）239.255.255.250

向239.255.255.250：37020发送基于ONVIF协议的 udp 组播,设备会监听 239.255.255.250：37020，收到指令，会向发送组播的机器，返回设备信息，也会向239.255.255.250：37020 发送 设备信息的 组播。

组播地址：239.255.255.250是SSDP(简单服务发现协议)
SSDP (Simple Service Discovery Protocol，简单服务发现协议)是一种用于小型网络(包括家庭网络)的网络协议，用于宣传和发现主要由通用即插即用(Universal Plug-and-Play, UPnP)架构支持的网络服务。简单服务发现协议是在HTTPU和HTTPMU的基础上实现的协议。它使用UDP数据报交换消息。

海康威视SDAP设备网络搜索工具

抓包：发送的包

<?xml version="1.0" encoding="utf-8"?>
<Probe>
<Uuid>
BE0BB4B9-FB42-4232-BB74-D98564D36FEF
</Uuid>
<Types>inquiry</Types>
</Probe>
<?xml version="1.0" encoding="utf-8"?>
<Probe>
<Uuid>
BE0BB4B9-FB42-4232-BB74-D98564D36FEF
</Uuid>
<Types>inquiry</Types>
</Probe>

收到的回包：

<?xml version="1.0" encoding="UTF-8"?>

<ProbeMatch><Uuid>BE0BB4B9-FB42-4232-BB74-D98564D36FEF</Uuid>

<Types>inquiry</Types>

<DeviceType>147984</DeviceType>

<DeviceDescription>DS-2SC3Q120LY-TE</DeviceDescription>

<DeviceSN>DS-2SC3Q120LY-TE20220604AACHK07718705</DeviceSN>

<CommandPort>8000</CommandPort>

<HttpPort>80</HttpPort>

<MAC>bc-9b-5e-58-38-ac</MAC>

<IPv4Address>192.168.1.24</IPv4Address>

<IPv4SubnetMask>255.255.255.0</IPv4SubnetMask>

<IPv4Gateway>192.168.1.1</IPv4Gateway>

<IPv6Address>::</IPv6Address>

<IPv6Gateway>::</IPv6Gateway>

<IPv6MaskLen>64</IPv6MaskLen>

<DHCP>false</DHCP>

<AnalogChannelNum>0</AnalogChannelNum>

<DigitalChannelNum>1</DigitalChannelNum>

<SoftwareVersion>V5.7.4build 220509</SoftwareVersion>

<DSPVersion>V7.3 build 220506</DSPVersion>

<BootTime>1970-01-01 00:35:20</BootTime>

<Encrypt>true</Encrypt>

<ResetAbility>false</ResetAbility>

<DiskNumber>0</DiskNumber>

<Activated>true</Activated>

<PasswordResetAbility>true</PasswordResetAbility>

<PasswordResetModeSecond>true</PasswordResetModeSecond>

<DetailOEMCode>1</DetailOEMCode>

<SupportSecurityQuestion>true</SupportSecurityQuestion>

<SupportHCPlatform>true</SupportHCPlatform>

<HCPlatformEnable>true</HCPlatformEnable>

<IsModifyVerificationCode>flase</IsModifyVerificationCode>

<Salt>12ef567fba68bcc074a68fe4326fab00c577e86059427b33074ab1404595c695</Salt>

<DeviceLock>true</DeviceLock>

<codeEncrypt>true</codeEncrypt>

<SupportMailBox>true</SupportMailBox>

<supportEzvizUnbind>true</supportEzvizUnbind>

</ProbeMatch>

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