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災害警示資料無法擷取

System.Net.WebException: 基礎連接已關閉: 傳送時發生未預期的錯誤。 ---> System.IO.IOException: 無法從傳輸連接讀取資料: 遠端主機已強制關閉一個現存的連線。。 ---> System.Net.Sockets.SocketException: 遠端主機已強制關閉一個現存的連線。 於 System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) --- 內部例外狀況堆疊追蹤的結尾 --- 於 System.Net.Sockets.NetworkStream.Read(Byte[] buffer, Int32 offset, Int32 size) 於 System.Net.FixedSizeReader.ReadPacket(Byte[] buffer, Int32 offset, Int32 count) 於 System.Net.Security.SslState.StartReceiveBlob(Byte[] buffer, AsyncProtocolRequest asyncRequest) 於 System.Net.Security.SslState.CheckCompletionBeforeNextReceive(ProtocolToken message, AsyncProtocolRequest asyncRequest) 於 System.Net.Security.SslState.ForceAuthentication(Boolean receiveFirst, Byte[] buffer, AsyncProtocolRequest asyncRequest, Boolean renegotiation) 於 System.Net.Security.SslState.ProcessAuthentication(LazyAsyncResult lazyResult) 於 System.Threading.ExecutionContext.RunInternal(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 於 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean preserveSyncCtx) 於 System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) 於 System.Net.TlsStream.ProcessAuthentication(LazyAsyncResult result) 於 System.Net.TlsStream.Write(Byte[] buffer, Int32 offset, Int32 size) 於 System.Net.PooledStream.Write(Byte[] buffer, Int32 offset, Int32 size) 於 System.Net.ConnectStream.WriteHeaders(Boolean async) --- 內部例外狀況堆疊追蹤的結尾 --- 於 System.Net.HttpWebRequest.GetResponse() 於 SiteApp.FixedModuleString.SideInformation() / ErrorMsg: