Microsoft RPC over HTTP

RPC over HTTP is a Microsoft protocol that allows Microsoft Outlook clients to access Microsoft Exchange servers over HTTP. The RPC over HTTP protocol uses one HTTP connection for request data and one HTTP connection for response data. These HTTP connections are long lived. The protocol tunnels multiple requests/responses in a single HTTP request.

A typical usage scenario is an Outlook user outside the corporate network who wants to connect to an internal Exchange server. This connection is achieved by accessing a reverse proxy (such as WebSEAL) using HTTP. The HTTP connection is terminated inside the corporate network and a configured IIS relays the RPC commands to the Exchange server.

• RPC over HTTP support in WebSEAL
  
• Junction configuration
  
• POP configuration
  
• Authentication limitations
  
• Timeout considerations
  
• WebSEAL server log errors
  
• Worker thread consideration
  

Parent topic: Standard WebSEAL Junctions