Edit

WS_CHANNEL_TYPE enumeration (webservices.h)

  • Article

Indicates the basic characteristics of the channel, such as whether it is sessionful, and what directions of communication are supported.

Syntax

typedef enum {
  WS_CHANNEL_TYPE_INPUT = 0x1,
  WS_CHANNEL_TYPE_OUTPUT = 0x2,
  WS_CHANNEL_TYPE_SESSION = 0x4,
  WS_CHANNEL_TYPE_INPUT_SESSION,
  WS_CHANNEL_TYPE_OUTPUT_SESSION,
  WS_CHANNEL_TYPE_DUPLEX,
  WS_CHANNEL_TYPE_DUPLEX_SESSION,
  WS_CHANNEL_TYPE_REQUEST = 0x8,
  WS_CHANNEL_TYPE_REPLY = 0x10
} WS_CHANNEL_TYPE;

Constants

 
WS_CHANNEL_TYPE_INPUT
Value: 0x1
Input channels support Receive operations. They are used on the sender side.


The WS_UDP_CHANNEL_BINDING supports this channel type
when used with WsCreateChannelForListener.
WS_CHANNEL_TYPE_OUTPUT
Value: 0x2
Output channels support Send operations.


This channel type is not currently supported by any channel bindings.
WS_CHANNEL_TYPE_SESSION
Value: 0x4
Sessionful channels provide channel-level correlation of all messages sent or received.


This is a flag used to build WS_CHANNEL_TYPE_INPUT_SESSION,
WS_CHANNEL_TYPE_OUTPUT_SESSION, and WS_CHANNEL_TYPE_DUPLEX_SESSION,
but cannot be used alone.
WS_CHANNEL_TYPE_INPUT_SESSION
An input channel that supports a session.


This channel type is not currently supported by any channel bindings.
WS_CHANNEL_TYPE_OUTPUT_SESSION
An output channel that supports a session.


This channel type is not currently supported by any channel bindings.
WS_CHANNEL_TYPE_DUPLEX
An input/output channel.


The WS_UDP_CHANNEL_BINDING supports this channel type
when used with WsCreateChannel.
WS_CHANNEL_TYPE_DUPLEX_SESSION
An input/output channel that supports a session.


The WS_TCP_CHANNEL_BINDING supports this channel type when
used with WsCreateChannel or WsCreateChannelForListener.
WS_CHANNEL_TYPE_REQUEST
Value: 0x8
Request channels support Send followed by Receive. They are used on the client
side for channels that support request-reply operations.


The WS_HTTP_CHANNEL_BINDING supports this channel type when
used with WsCreateChannel.


Note that request channels provide built-in correlation of request replies.
It is possible to do request-reply correlation on other channel types using the
addressing headers (RelatesTo and MessageID).
WS_CHANNEL_TYPE_REPLY
Value: 0x10
Reply channels support Receive followed by Send. They are used on the service
side for channels that support request-reply operations (for example, HTTP).


The WS_HTTP_CHANNEL_BINDING supports this channel type when
used with WsCreateChannelForListener.


Note that reply channels provide built-in correlation of request replies.
It is possible to do request-reply correlation on other channel types using the
addressing headers (RelatesTo and MessageID).

Requirements

Requirement Value
Minimum supported client Windows 7 [desktop apps | UWP apps]
Minimum supported server Windows Server 2008 R2 [desktop apps | UWP apps]
Header webservices.h