Sends AS2 message and receives an AS2 synchronous receipt if available.
Declaration
[C#/Java]
int Send(string URL, System.IO.Stream Message, System.IO.Stream Receipt);
int Send(string URL, string Message, string Receipt);
[VB.NET]
Function Send(ByVal URL As String, ByVal Message As System.IO.Stream, ByVal Receipt As System.IO.Stream) As Integer
Function Send(ByVal URL As String, ByVal Message As String, ByVal Receipt As String) As Integer