优化海康下发任务加快，添加请求头

yanjinhui

2026-03-20 5cbf9d0d05f6f2357c71f4e585441fdb4fc51d89

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<Project Sdk="Microsoft.NET.Sdk">
 
  <PropertyGroup>
    <TargetFramework>net6.0</TargetFramework>
    <ImplicitUsings>enable</ImplicitUsings>
    <Nullable>enable</Nullable>
  </PropertyGroup>
 
</Project>