Storage Emulator Batch operation fails: JsonFormatNotSupported

Question

I am having trouble with the Azure storage EMULATOR when I send a a batch containing one changeset.
Here are the publicly available credentials that I use:
account name: devstoreaccount1
key: Eby8vdM02xNOcqFlqUwJPLlmEtlCDXJ1OUzFT50uSRZ6IFsuFq2UVErCz4I6tq/K1SZFPTOtr/KBHBeksoGMGw==
In that changeset I use a json payload. Here is a capture from Fiddler of the HTTP request I send out:
POST http://127.0.0.1:10002/devstoreaccount1/$batch HTTP/1.1
Accept: application/json;odata=minimalmetadata
x-ms-version: 2013-08-15
Content-Type: multipart/mixed; boundary=batch_a1e9d677-b28b-435e-a89e-87e6a768a431
x-ms-date: Wed, 20 Aug 2014 15:51:44 GMT
Authorization: SharedKeyLite devstoreaccount1:pYsBvjqA5gNes4L7PlYrmJuKk+FxWby4Fyplgbl9Nyw=
Accept-Language: en-US,en-ZA;q=0.7,en;q=0.3
UA-CPU: AMD64
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; Trident/7.0; Touch; MSAppHost/2.0; rv:11.0) like Gecko
Connection: Keep-Alive
Content-Length: 639
Host: 127.0.0.1:10002
Pragma: no-cache
--batch_a1e9d677-b28b-435e-a89e-87e6a768a431
Content-Type: multipart/mixed; boundary=changeset_8a28b620-b4bb-458c-a177-0959fb14c977
--changeset_8a28b620-b4bb-458c-a177-0959fb14c977
Content-Type: application/http
Content-Transfer-Encoding: binary
PUT http://127.0.0.1:10002/devstoreaccount1/boobooboo(PartitionKey='Channel_19',RowKey='1') HTTP/1.1
Content-Type: application/json
Accept: application/json;odata=minimalmetadata
x-ms-version: 2013-08-15
{"PartitionKey":"Channel_19","RowKey":"1","Rating":9,"Text":".NET..."}
--changeset_8a28b620-b4bb-458c-a177-0959fb14c977--
--batch_a1e9d677-b28b-435e-a89e-87e6a768a431--
And here is the response I get back from the emulator:
HTTP/1.1 202 Accepted
Cache-Control: no-cache
Content-Type: multipart/mixed; boundary=batchresponse_b459ba99-58f8-4a60-9b4e-bca74afc0e39
Server: Windows-Azure-Table/1.0 Microsoft-HTTPAPI/2.0
x-ms-request-id: dfc8e1c3-4a99-4299-9252-dbc177bf6db3
x-ms-version: 2013-08-15
X-Content-Type-Options: nosniff
Date: Wed, 20 Aug 2014 15:51:44 GMT
Content-Length: 779
--batchresponse_b459ba99-58f8-4a60-9b4e-bca74afc0e39
Content-Type: multipart/mixed; boundary=changesetresponse_66204595-1aa3-4e93-873f-8b66905e9550
--changesetresponse_66204595-1aa3-4e93-873f-8b66905e9550
Content-Type: application/http
Content-Transfer-Encoding: binary
HTTP/1.1 415 Unsupported Media Type
X-Content-Type-Options: nosniff
DataServiceVersion: 3.0;
Content-Type: application/json;odata=minimalmetadata;streaming=true;charset=utf-8
{"odata.error":{"code":"JsonFormatNotSupported","message":{"lang":"en-US","value":"0:JSON format is not supported.\nRequestId:dfc8e1c3-4a99-4299-9252-dbc177bf6db3\nTime:2014-08-20T15:51:44.8561252Z"}}}
--changesetresponse_66204595-1aa3-4e93-873f-8b66905e9550--
--batchresponse_b459ba99-58f8-4a60-9b4e-bca74afc0e39--
The weird thing is, I am able to post a json payload PERFECTLY fine if I don't try batching.
Can anyone see if there is something missing from my request? What can I do/use to help me debug the issue more?

Answer 1

It turns out that I was missing a header:
MaxDataServiceVersion: 3.0;NetFx
So my request header should look something like:
POST http://127.0.0.1:10002/devstoreaccount1/$batch HTTP/1.1
Accept: */*
x-ms-version: 2014-02-14
DataServiceVersion: 3.0;
Content-Type: multipart/mixed; boundary=batch_263c1534-47a0-4721-a76b-80b58cdf31ff
x-ms-date: Wed, 20 Aug 2014 20:20:01 GMT
Authorization: SharedKeyLite devstoreaccount1:Q2XtDBKtwlIgNoGU8r3ltXtf6R4LmVfvNs12vhI/cLg=
MaxDataServiceVersion: 3.0;NetFx
Accept-Language: en-US,en-ZA;q=0.7,en;q=0.3
UA-CPU: AMD64
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/5.0 (Windows NT 6.3; Win64; x64; Trident/7.0; Touch; MSAppHost/2.0; rv:11.0) like Gecko
Connection: Keep-Alive
Content-Length: 572
Host: 127.0.0.1:10002
Pragma: no-cache
--batch_263c1534-47a0-4721-a76b-80b58cdf31ff
Content-Type: multipart/mixed; boundary=changeset_52746636-83b9-4d69-85ac-9b921b0df99b
--changeset_52746636-83b9-4d69-85ac-9b921b0df99b
Content-Type: application/http
Content-Transfer-Encoding: binary
PUT http://ipv4.fiddler:10002/devstoreaccount1/boobooboo(PartitionKey='Channel_19',RowKey='1') HTTP/1.1
Accept: application/json;odata=minimalmetadata
Content-Type: application/json
DataServiceVersion: 3.0;
--changeset_52746636-83b9-4d69-85ac-9b921b0df99b--
--batch_263c1534-47a0-4721-a76b-80b58cdf31ff--