Multiple headers are not sent with url-encoded and multipart-form bodies.
Solution:
Change resolution of headers in HttpContext#handleCreateRequest(). Do not use MultiMap#get() to copy headers anymore. Instead, copy the entries from the original MultiMap using MultiMap#addAll(MultiMap).
Motivation:
Multiple headers are not sent with url-encoded and multipart-form bodies.
Solution:
Change resolution of headers in
HttpContext#handleCreateRequest(). Do not useMultiMap#get()to copy headers anymore. Instead, copy the entries from the original MultiMap usingMultiMap#addAll(MultiMap).Fixes #2678