HttpRequestExecutingMessageHandler (the outbound gateway) should support simple responses (200 "OK) [INT-1218]

[spring-operator]

Dave Syer opened INT-1218 and commented

The gateway expects a non-null response type, so it cannot deal with simple 200 "OK" repsonses. It would often be fine in such cases to respond with a message with a fixed payload. Or maybe we need http:outbound-channel-adapter.

It seems inconsistent that the http:inbound-channel-adapter can be configured to return an empty 200 "OK", but the outbound side cannot deal with the response.

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Affects: 2.0 M4

[spring-operator]

Mark Fisher commented

I modified the default 'expectedResponseType' on the HttpRequestExecutingMessageHandler so that it's NULL. That means that no conversion will be attempted and any successful status code will be returned as the payload by default.

If a different type is desired (e.g. String), then that can be set. Then the HttpMessageConverters kick in to do their magic.