ClientRuntimeContext.RequestTimeout property
SharePoint 2013
Gets or sets the requested time-out value in milliseconds.
Assemblies: Microsoft.SharePoint.Client.Silverlight.Runtime (in Microsoft.SharePoint.Client.Silverlight.Runtime.dll); Microsoft.SharePoint.Client.Phone.Runtime (in Microsoft.SharePoint.Client.Phone.Runtime.dll) Microsoft.SharePoint.Client.Runtime (in Microsoft.SharePoint.Client.Runtime.dll)
With a .NET managed application client, the time-out is applied to the HttpWebRequest class that is used to send request to the server. In the Silverlight Library, because the HttpWebRequest class does not support time-out, it is only used when the ExecuteQueryAsync method is called. A value of Timeout.Infinite implies that there is no time-out.