Getting "The underlying connection was closed: An unexpected error occurred on a receive." in Azure Web Jobs

I have created one web job - on demand schedule under azure web site.  This web jobs contains .execmd(i.e.) Console Application.

I am retrieving the data from SQL Azure database and uploaded the data in sharepoint online lists. (i.e.)I have uploaded the data to several(7) lists in each subsites. I have 3 subsites. 

I am getting this error "The underlying connection was closed: An unexpected error occurred on a receive.", while uploaded the data into lists. 

Full Error Message:

Message - The underlying connection was closed: An unexpected error occurred on a receive.

StackTrace -    at System.Net.HttpWebRequest.GetResponse()
> cc525c: INFO]    at Microsoft.SharePoint.Client.SPWebRequestExecutor.Execute()
> cc525c: INFO]    at Microsoft.SharePoint.Client.ClientRequest.ExecuteQueryToServer(ChunkStringBuilder sb)
> cc525c: INFO]    at Microsoft.SharePoint.Client.ClientRequest.ExecuteQuery()
> cc525c: INFO]    at Microsoft.SharePoint.Client.ClientRuntimeContext.ExecuteQuery()
> cc525c: INFO]    at Microsoft.SharePoint.Client.ClientContext.ExecuteQuery()

This is not occur every time. Some time i didn't get any error data successfully uploaded in share point online list.

Totally 4 hours taken uploaded the data into list for completed all 3 subsites. 

If anyone know how to resolve this.

Thanks,

A.Ramu