From Contract to Channel

When you create a client channel through ServiceModel, the shape of the channel is determined by various properties of your contract. Roughly the mapping is as follows:

OneWay	Request/Reply	Session	Callback	Channel
Any	Any	No	Yes	IDuplexChannel
Any	Any	No	Yes	IDuplexSesionChannel
Any	Any	Yes	Yes	IDuplexSessionChannel
Yes	Yes	No	No	IDuplexChannel
Yes	Yes	No	No	IRequestChannel
Yes	Yes	No	No	IDuplexSessionChannel
Yes	Yes	Yes	No	IDuplexSessionChannel
Yes	Yes	Yes	No	IRequestSessionChannel
Yes	No	No	No	IOutputChannel
Yes	No	No	No	IDuplexChannel
Yes	No	No	No	IDuplexSessionChannel
Yes	No	No	No	IRequestChannel
Yes	No	Yes	No	IOutputSessionChannel
Yes	No	Yes	No	IDuplexSessionChannel
Yes	No	Yes	No	IRequestSessionChannel
No	Yes	No	No	IRequestChannel
No	Yes	No	No	IDuplexChannel
No	Yes	No	No	IDuplexSessionChannel
No	Yes	Yes	No	IRequestSessionChannel
No	Yes	Yes	No	IDuplexSessionChannel

ServiceModel also has internal adapters so that, for example, if your stack supports IOutputSessionChannel, then ServiceModel can adapt that channel to a desired IOutputChannel. More on this in a later post.

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From Contract to Channel

2 thoughts on “From Contract to Channel”

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