cljs-http.core/xhr does not set header content type and correct request method name

[Mamun]

• What will be request method for example in bellow?
• What will be header content-type for example in bellow?

(http/post "http://example.com" {:edn-params {:foo :bar}})

When headers set "content-type" with "application/x-www-form-urlencoded", it is setting correct content type with request method POST. But with other type, content type is not set and request method is OPTIONS.

• Working example

(go
(let [r {:with-credentials? false,
:scheme :http,
:server-name "localhost",
:server-port 3000,
:uri "/post",
:headers {"content-type" "application/x-www-form-urlencoded"},
:request-method :post
:query-params nil,
:query-string nil,
:body "a=1",
}](->
%28xhr r%29
%28<!%29
%28log%29)))

Here
General
Remote Address:127.0.0.1:3000
Request URL:http://localhost:3000/post
Request Method:POST
Status Code:200 OK

Request Headers
Accept:/
Accept-Encoding:gzip, deflate
Accept-Language:en-US,en;q=0.8
Connection:keep-alive
Content-Length:3
Content-Type:application/x-www-form-urlencoded
Host:localhost:3000
Origin:http://localhost:3449
Referer:http://localhost:3449/

• Error example

(go
(let [r {:with-credentials? false,
:scheme :http,
:server-name "localhost",
:server-port 3000,
:uri "/post",
:headers {"content-type" "application/edn"},
:request-method :post
:query-string nil,
:query-params nil,
:body (pr-str {:a 1}),
}](->
%28xhr r%29
%28<!%29
%28log%29)))

General
Remote Address:127.0.0.1:3000
Request URL:http://localhost:3000/post
Request Method:OPTIONS
Status Code:200 OK

Request headers
Accept:/
Accept-Encoding:gzip, deflate, sdch
Accept-Language:en-US,en;q=0.8
Access-Control-Request-Headers:content-type
Access-Control-Request-Method:POST
Connection:keep-alive
Host:localhost:3000
Origin:http://localhost:3449
Referer:http://localhost:3449/

This is not an issue for cljs-http but goog.net.xhr.

[Mamun]

This is the case for cross domain. But in same domain, it sets correctly. Not an issue.