The sample program cannot connect to the network

[mallocxw]

Describe the bug

Describe：The sample program cannot connect to the network（signaling service），the equipment and service are on the same WiFi，the computer of signaling service can access the web management page of the device，I have checked the network condition and application network permission，and everything is normal。The signaling service can be normally connected on the development environment computer。There are blog records with the same problem. It is due to the SDK version problem. I tried to switch different SDK versions, but failed to solve it。Hololens device technical support cannot help，how should I solve it。

Environment

Equipment information：Hololens2
Equipment Windows version ：20348.1447.arm64fre.fe_release_svc_sydney_rel_prod.220203-1757

Development environment: Windows 10 21H1 + Unity Hub 3.0.1-c3 + Unity 2020.3.16f1c1/2020.3.29f1c1/2021.2.13f1c1 + VS 2022-17.1.0 + Hololens2+ WebRTC 2.7.3