Hosted TripPinService does not support OData batch requests with BatchPayloadUriOption.RelativeUri

[NilsEngelbach]

When using relative uris in the batch request content the provided hosted TripPin Service (https://services.odata.org/V4/TripPinServiceRW/) throws an internal server error:

{
  "error":{
    "code": "InternalServerError",
    "message": "The relative URI 'Airlines' was specified in a batch operation, but a base URI was not specified for the batch writer or batch reader.",
    "innererror":{
      "message": "The relative URI 'Airlines' was specified in a batch operation, but a base URI was not specified for the batch writer or batch reader.",
      "type": "Microsoft.OData.Core.ODataException",
      "stacktrace": "at Microsoft.OData.Core.ODataBatchUtils.CreateOperationRequestUri(Uri uri, Uri baseUri, IODataUrlResolver urlResolver)
          at Microsoft.OData.Core.ODataBatchReader.ParseRequestLine(String requestLine, String& httpMethod, Uri& requestUri)
          at Microsoft.OData.Core.ODataBatchReader.CreateOperationRequestMessageImplementation()
          at Microsoft.OData.Core.ODataBatchReader.InterceptException[T](Func`1 action)
          at Microsoft.OData.Core.ODataBatchReader.CreateOperationRequestMessage()
          at Microsoft.Test.OData.Services.ODataWCFService.Handlers.BatchHandler.Process(IODataRequestMessage requestMessage, IODataResponseMessage responseMessage)
          at Microsoft.Test.OData.Services.ODataWCFService.Handlers.RequestHandler.Process(Stream requestStream)
          at Microsoft.Test.OData.Services.ODataWCFService.Handlers.RequestHandler.Process(Stream requestStream)
          at Microsoft.Test.OData.Services.ODataWCFService.Handlers.RootRequestHandler.Process(Stream requestStream)"
    }
  }
}

When running the service locally it works fine.

Example Batch Payloads

POST http://localhost:23890/$batch HTTP/1.1

Absolute uris local service

--batch_ac4d9fb4-e4de-4c1f-9153-0d9308720072
Content-Type: application/http
Content-Transfer-Encoding: binary

GET http://localhost:23890/Airlines HTTP/1.1

--batch_ac4d9fb4-e4de-4c1f-9153-0d9308720072
Content-Type: multipart/mixed; boundary=changeset_f4ba15a3-29f2-423a-811c-d7684cd360aa

--changeset_f4ba15a3-29f2-423a-811c-d7684cd360aa
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: 2

POST http://localhost:23890/Airlines HTTP/1.1
Content-ID: 2
Prefer: return=minimal
OData-Version: 4.0
Content-Type: application/json;odata.metadata=minimal;odata.streaming=true;IEEE754Compatible=false;charset=utf-8

{\"@odata.type\":\"#ODataSamples.WebApiService.Models.Airline\",\"AirlineCode\":\"TT\",\"Name\":\"Test Airline\"}
--changeset_f4ba15a3-29f2-423a-811c-d7684cd360aa--
--batch_ac4d9fb4-e4de-4c1f-9153-0d9308720072
Content-Type: application/http
Content-Transfer-Encoding: binary

GET http://localhost:23890/Airlines HTTP/1.1

--batch_ac4d9fb4-e4de-4c1f-9153-0d9308720072--

Relative uris local service

--batch_69819926-ba2a-4e59-87e7-768c0397e18c
Content-Type: application/http
Content-Transfer-Encoding: binary

GET Airlines HTTP/1.1

--batch_69819926-ba2a-4e59-87e7-768c0397e18c
Content-Type: multipart/mixed; boundary=changeset_f90e0431-9b28-4373-93a7-b78ca7e2e321

--changeset_f90e0431-9b28-4373-93a7-b78ca7e2e321
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: 2

POST Airlines HTTP/1.1
Content-ID: 2
Prefer: return=minimal
OData-Version: 4.0
Content-Type: application/json;odata.metadata=minimal;odata.streaming=true;IEEE754Compatible=false;charset=utf-8

{\"@odata.type\":\"#ODataSamples.WebApiService.Models.Airline\",\"AirlineCode\":\"TT\",\"Name\":\"Test Airline\"}
--changeset_f90e0431-9b28-4373-93a7-b78ca7e2e321--
--batch_69819926-ba2a-4e59-87e7-768c0397e18c
Content-Type: application/http
Content-Transfer-Encoding: binary

GET Airlines HTTP/1.1

--batch_69819926-ba2a-4e59-87e7-768c0397e18c--

POST https://services.odata.org/V4/(S(tlqsblnqc325d3g3fkcdjfnn))/TripPinServiceRW/$batch HTTP/1.1

Absolute uris hosted service

--batch_894c7175-9339-4d01-9e79-fb04e8955c59
Content-Type: application/http
Content-Transfer-Encoding: binary

GET https://services.odata.org/V4/(S(shvevt0np51k15lzg4kfwka5))/TripPinServiceRW/Airlines HTTP/1.1

--batch_894c7175-9339-4d01-9e79-fb04e8955c59
Content-Type: multipart/mixed; boundary=changeset_140b70f2-4960-45be-8867-b79b22038d52

--changeset_140b70f2-4960-45be-8867-b79b22038d52
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: 2

POST https://services.odata.org/V4/(S(shvevt0np51k15lzg4kfwka5))/TripPinServiceRW/Airlines HTTP/1.1
Content-ID: 2
Prefer: return=minimal
OData-Version: 4.0
Content-Type: application/json;odata.metadata=minimal;odata.streaming=true;IEEE754Compatible=false;charset=utf-8

{\"@odata.type\":\"#Microsoft.OData.SampleService.Models.TripPin.Airline\",\"AirlineCode\":\"TT\",\"Name\":\"Test Airline\"}
--changeset_140b70f2-4960-45be-8867-b79b22038d52--
--batch_894c7175-9339-4d01-9e79-fb0
4e8955c59
Content-Type: application/http
Content-Transfer-Encoding: binary

GET https://services.odata.org/V4/(S(shvevt0np51k15lzg4kfwka5))/TripPinServiceRW/Airlines HTTP/1.1

--batch_894c7175-9339-4d01-9e79-fb04e8955c59--

Relative uris hosted service

--batch_f21a5821-749e-4be7-9274-1df9551d7957
Content-Type: application/http
Content-Transfer-Encoding: binary

GET Airlines HTTP/1.1

--batch_f21a5821-749e-4be7-9274-1df9551d7957
Content-Type: multipart/mixed; boundary=changeset_877fc302-a9bd-4242-a3b1-6a2963275af7

--changeset_877fc302-a9bd-4242-a3b1-6a2963275af7
Content-Type: application/http
Content-Transfer-Encoding: binary
Content-ID: 2

POST Airlines HTTP/1.1
Content-ID: 2
Prefer: return=minimal
OData-Version: 4.0
Content-Type: application/json;odata.metadata=minimal;odata.streaming=true;IEEE754Compatible=false;charset=utf-8

{\"@odata.type\":\"#Microsoft.OData.SampleService.Models.TripPin.Airline\",\"AirlineCode\":\"TT\",\"Name\":\"Test Airline\"}
--changeset_877fc302-a9bd-4242-a3b1-6a2963275af7--
--batch_f21a5821-749e-4be7-9274-1df9551d7957
Content-Type: application/http
Content-Transfer-Encoding: binary

GET Airlines HTTP/1.1

--batch_f21a5821-749e-4be7-9274-1df9551d7957--