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authorLoïc Hoguin <[email protected]>2017-01-04 19:21:23 +0100
committerLoïc Hoguin <[email protected]>2017-01-04 19:21:23 +0100
commitf34ef2ceae4bccd49f3a655e311c310b7570e64f (patch)
tree2bc6eac95238852b97d544c680937117ec062c25 /doc/src/manual/cowboy_req.set_resp_headers.asciidoc
parent3f4e79d42f7a81fa3f8e790630f71570287c2be0 (diff)
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Improve the manual for the new resp_header functions
Diffstat (limited to 'doc/src/manual/cowboy_req.set_resp_headers.asciidoc')
-rw-r--r--doc/src/manual/cowboy_req.set_resp_headers.asciidoc45
1 files changed, 34 insertions, 11 deletions
diff --git a/doc/src/manual/cowboy_req.set_resp_headers.asciidoc b/doc/src/manual/cowboy_req.set_resp_headers.asciidoc
index e5a0fcb..63fe424 100644
--- a/doc/src/manual/cowboy_req.set_resp_headers.asciidoc
+++ b/doc/src/manual/cowboy_req.set_resp_headers.asciidoc
@@ -8,22 +8,32 @@ cowboy_req:set_resp_headers - Set several response headers
[source,erlang]
----
-set_resp_headers(Headers, Req) -> cowboy_req:req()
+set_resp_headers(Headers, Req :: cowboy_req:req())
+ -> Req
Headers :: cowboy:http_headers()
-Req :: cowboy_req:req()
----
-Add all given headers to the response headers.
-If a given header key already exists in the currently set
-response-header map the given value will overwrite the old.
+Set several headers to be sent with the response.
+
+The header name must be given as a lowercase binary string.
+While header names are case insensitive, Cowboy requires them
+to be given as lowercase to function properly.
+
+Cowboy does not allow duplicate header names. Headers set
+by this function may be overwritten by those set from the
+reply functions. Likewise, headers set by this function may
+overwrite headers that were set previously.
+
+Use link:man:cowboy_req:set_resp_cookie(3)[cowboy_req:set_resp_cookie(3)]
+instead of this function to set cookies.
== Arguments
Headers::
-A map with keys and values as binary strings.
-Key values should be lowercase to function properly.
+Headers as a map with keys being lowercase binary strings,
+and values as binary strings.
Req::
@@ -31,7 +41,10 @@ The Req object.
== Return value
-A request object updated with the given response headers.
+A new Req object is returned.
+
+The returned Req object must be used from that point onward,
+otherwise the headers will not be sent in the response.
== Changelog
@@ -39,13 +52,23 @@ A request object updated with the given response headers.
== Examples
-.Get all response headers
+.Set several response headers
[source,erlang]
----
-Req1 = cowboy_req:set_resp_headers(#{<<"x-header-test">> => <<"1">>}, Req0).
+Req = cowboy_req:set_resp_headers(#{
+ <<"content-type">> => <<"text/html">>,
+ <<"content-encoding">> => <<"gzip">>
+}, Req0).
----
== See also
link:man:cowboy_req(3)[cowboy_req(3)],
-link:man:cowboy_req:resp_headers(3)[cowboy_req:resp_headers(3)] \ No newline at end of file
+link:man:cowboy_req:set_resp_cookie(3)[cowboy_req:set_resp_cookie(3)],
+link:man:cowboy_req:set_resp_header(3)[cowboy_req:set_resp_header(3)],
+link:man:cowboy_req:has_resp_header(3)[cowboy_req:has_resp_header(3)],
+link:man:cowboy_req:resp_header(3)[cowboy_req:resp_header(3)],
+link:man:cowboy_req:resp_headers(3)[cowboy_req:resp_headers(3)],
+link:man:cowboy_req:delete_resp_header(3)[cowboy_req:delete_resp_header(3)],
+link:man:cowboy_req:reply(3)[cowboy_req:reply(3)],
+link:man:cowboy_req:stream_reply(3)[cowboy_req:stream_reply(3)]