.NET Framework 4.6 and 4.5
The ServicePointManager type exposes the following members.
|DefaultNonPersistentConnectionLimit||The default number of non-persistent connections (4) allowed on a ServicePoint object connected to an HTTP/1.0 or later server. This field is constant but is no longer used in the .NET Framework 2.0.|
|DefaultPersistentConnectionLimit||The default number of persistent connections (2) allowed on a ServicePoint object connected to an HTTP/1.1 or later server. This field is constant and is used to initialize the DefaultConnectionLimit property if the value of the DefaultConnectionLimit property has not been set either directly or through configuration.|