path: root/doc/src/guide
diff options
authorLoïc Hoguin <[email protected]>2017-10-29 19:52:27 +0000
committerLoïc Hoguin <[email protected]>2017-10-29 21:03:04 +0000
commitf3d6b05b863fe177a34a8a6ba48c5f263ef8cf82 (patch)
treefc3235ad43880f29186bce373a3c79057c83e060 /doc/src/guide
parentf4331f7c169309c9017b9628fe3757fc5312270b (diff)
Add cowboy_req:inform/2,3
User code can now send as many 1xx responses as necessary.
Diffstat (limited to 'doc/src/guide')
1 files changed, 23 insertions, 0 deletions
diff --git a/doc/src/guide/resp.asciidoc b/doc/src/guide/resp.asciidoc
index 2eaa804..6d4967e 100644
--- a/doc/src/guide/resp.asciidoc
+++ b/doc/src/guide/resp.asciidoc
@@ -262,6 +262,29 @@ Req = cowboy_req:reply(200, #{
// example would be automatic concatenation of CSS or JS
// files.
+=== Informational responses
+Cowboy allows you to send informational responses.
+Informational responses are responses that have a status
+code between 100 and 199. Any number can be sent before
+the proper response. Sending an informational response
+does not change the behavior of the proper response, and
+clients are expected to ignore any informational response
+they do not understand.
+The following snippet sends a 103 informational response
+with some headers that are expected to be in the final
+Req = cowboy_req:inform(103, #{
+ <<"link">> => <<"</style.css>; rel=preload; as=style">>,
+ <<"link">> => <<"</script.js>; rel=preload; as=script">>
+}, Req0).
=== Push
The HTTP/2 protocol introduced the ability to push resources