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PidTagRpcOverHttpFlags Canonical Property

Last modified: July 23, 2011

Applies to: Outlook

Contains the settings in a profile used by Microsoft Office Outlook to connect to Microsoft Exchange Server by using a remote procedure call (RPC) over Hypertext Transfer Protocol (HTTP).

Associated properties:

PR_ROH_FLAGS

Identifier:

0x6623

Data type:

PT_LONG

Area:

Miscellaneous

The PR_ROH_FLAGS property is stored in the Global Profile Section of a Messaging Application Programming Interface (MAPI) profile. The value of PR_ROH_FLAGS is a bitmask that is made up of one or more of the following flags.

Name

Value

Description

ROHFLAGS_USE_ROH

0x1

Connect to the Exchange Server using RPC over HTTP.

ROHFLAGS_SSL_ONLY

0x2

Connect to the Exchange Server using Secure Socket Layer (SSL) only.

ROHFLAGS_MUTUAL_AUTH

0x4

Mutually authenticate the session when connecting by using SSL.

ROHFLAGS_HTTP_FIRST_ON_FAST

0x8

On fast networks, connect by using HTTP first. Then, connect by using TCP/IP.

ROHFLAGS_HTTP_FIRST_ON_SLOW

0x20

On slow networks, connect by using HTTP first. Then, connect by using TCP/IP.

For example, to set the PR_ROH_FLAGS property to turn on RPC over HTTP, to require SSL, and to specify that the HTTP protocol should be used first on slow connections, set the value of the PR_ROH_FLAGS property to ROHFLAGS_USE_ROH | ROHFLAGS_SSL_ONLY | ROHFLAGS_HTTP_FIRST_ON_SLOW which is equal to 0x23.

Protocol Specifications

[MS-OXPROPS]

Provides references to related Exchange Server protocol specifications.

[MS-OXCFXICS]

Defines the basic data structures that are used in remote operations.

[MS-OXOMSG]

Specifies the properties and operations that are permissible for e-mail message objects.

Header Files

Mapidefs.h

Provides data type definitions.

Mapitags.h

Contains definitions of properties listed as alternate names.

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