explicitly set response charset to utf-8.

if the charset is not specified on the Content-Type header, it will
be determined elsewhere.  for example, the tomcat servlet container
will default to ISO-8859-1, while jetty will encode application/json
in UTF-8.  making this explicit (UTF-8 seems like the most sensible
default here) eliminates the potential for the sorts of nasty post-
deployment surprises one might experience when this setting is left
to the whims of an individual servlet container.

Author: jumblerg

build.boot

@@ -10,7 +10,7 @@
 (require
   '[adzerk.bootlaces :refer :all])
 
-(def +version+ "3.0.0-alpha7")
+(def +version+ "3.0.0-alpha8")
 
 (bootlaces! +version+)
 

src/castra/middleware.clj

@@ -121,7 +121,7 @@
                   *request*       req
                   *session*       (atom (:session req))
                   *validate-only* (= "true" (get-in req [:headers "x-castra-validate-only"]))]
-          (let [h (headers req head {"Content-Type" "application/json"})
+          (let [h (headers req head {"Content-Type" "application/json;charset=utf-8"})
                 f #(do (csrf!) (do-rpc (vars) (expression body-keys req)))
                 d (try (response body-keys req {:result (f) :state (when state-fn (state-fn))})
                        (catch Throwable e