Can not request with https

[rensamatar]

I try to call the api from mobile side and I got this

IOException: BeginWrite failure
System.Net.Sockets.NetworkStream.BeginWrite (System.Byte[] buffer, Int32 offset, Int32 size, System.AsyncCallback callback, System.Object state)
Mono.Security.Protocol.Tls.RecordProtocol.BeginSendRecord (ContentType contentType, System.Byte[] recordData, System.AsyncCallback callback, System.Object state)
Mono.Security.Protocol.Tls.RecordProtocol.SendRecord (ContentType contentType, System.Byte[] recordData)
Mono.Security.Protocol.Tls.RecordProtocol.SendAlert (Mono.Security.Protocol.Tls.Alert alert)
Mono.Security.Protocol.Tls.RecordProtocol.SendAlert (AlertDescription description)
Mono.Security.Protocol.Tls.SslStreamBase.AsyncHandshakeCallback (IAsyncResult asyncResult)
UnityEngine.Debug:LogException(Exception)
UnityHTTP.Request:GetResponse() (at Assets/Plugins/UnityHTTP/src/Request.cs:197)
UnityHTTP.Request:m__0(Object) (at Assets/Plugins/UnityHTTP/src/Request.cs:336)

How to solve this problem? Thank you.
Unity 5.4

[manwithsteelnerves]

@rensamatar Did you find any solution for this?

[andyburke]

Could this be related to mobile permissions around network access?