Add custom header in the batch request

[wanglw]

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[codecov]

Codecov Report

Merging #1097 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1097   +/-   ##
=======================================
  Coverage   95.21%   95.21%           
=======================================
  Files         126      126           
  Lines        3509     3509           
=======================================
  Hits         3341     3341           
  Misses        168      168

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[hsiliev]

Can you please point out how adding customHeader works? Is this handled by request or express module?

[wanglw]

@hsiliev Based on my understanding, I think it is handled by request.

Code level:
In our example, we get the customHeader in our code like this:

var myHeader = req.customHeader["if-match"] ? req.customHeader["if-match"] : "";

Example:
POST http://localhost:11443/batch
body includes the customeHeader:

[
    {
        "method": "PUT",
        "uri": "XXXXXXXX",
        "body": {
        	"test_id": "TEST",
        	"state": "test"
        },
        "headers": {
        	"if-match": "7-0b6a49e921a6a9214a5503e29adcc7eb"
        }
    }
]

[hsiliev]

I don't see customHeader in the source of request (nor in express) and that's why I asked.

In fact the docs mention only headers option (https://github.com/request/request#custom-http-headers), so I think the change should actually be:

headers: r.headers