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Code Issues Wiki Activity

Fix ssl_hello_world example; document HTTP/2 output

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This commit is contained in:
Loïc Hoguin 2016-04-30 14:58:32 +02:00
parent ff936ff0ee
commit 25912dfc05
4 changed files with 66 additions and 7 deletions
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1
examples/ssl_hello_world/Makefile
View file

@ -3,6 +3,7 @@ PROJECT_DESCRIPTION = Cowboy SSL Hello World example
PROJECT_VERSION = 1
DEPS = cowboy
LOCAL_DEPS = ssl
dep_cowboy_commit = master
include ../../erlang.mk

62
examples/ssl_hello_world/README.asciidoc
View file

@ -1,4 +1,4 @@
= Hello world example
= Secure hello world example
To try this example, you need GNU `make` and `git` in your PATH.
@ -12,7 +12,10 @@ Then point your browser to https://localhost:8443
You will need to temporarily trust the root certificate authority,
which can also be found in `priv/ssl/cowboy-ca.crt`.
== Example output
Recent browsers will communicate using HTTP/2. Older browsers
will use HTTP/1.1.
== HTTP/1.1 example output
[source,bash]
----
@ -25,3 +28,58 @@ content-length: 12
Hello world!
----
== HTTP/2 example output
[source,bash]
----
$ nghttp -v https://localhost:8443
[ 0.001] Connected
The negotiated protocol: h2
[ 0.009] recv SETTINGS frame <length=0, flags=0x00, stream_id=0>
(niv=0)
[ 0.009] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
(niv=2)
[SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
[SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[ 0.009] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.009] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
(dep_stream_id=0, weight=201, exclusive=0)
[ 0.009] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
(dep_stream_id=0, weight=101, exclusive=0)
[ 0.009] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
(dep_stream_id=0, weight=1, exclusive=0)
[ 0.009] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
(dep_stream_id=7, weight=1, exclusive=0)
[ 0.009] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
(dep_stream_id=3, weight=1, exclusive=0)
[ 0.009] send HEADERS frame <length=38, flags=0x25, stream_id=13>
; END_STREAM | END_HEADERS | PRIORITY
(padlen=0, dep_stream_id=11, weight=16, exclusive=0)
; Open new stream
:method: GET
:path: /
:scheme: https
:authority: localhost:8443
accept: */*
accept-encoding: gzip, deflate
user-agent: nghttp2/1.7.1
[ 0.010] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.010] recv (stream_id=13) :status: 200
[ 0.010] recv (stream_id=13) content-length: 12
[ 0.010] recv (stream_id=13) content-type: text/plain
[ 0.010] recv (stream_id=13) date: Sat, 30 Apr 2016 12:54:32 GMT
[ 0.010] recv (stream_id=13) server: Cowboy
[ 0.010] recv HEADERS frame <length=45, flags=0x04, stream_id=13>
; END_HEADERS
(padlen=0)
; First response header
Hello world![ 0.010] recv DATA frame <length=12, flags=0x01, stream_id=13>
; END_STREAM
[ 0.010] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
(last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])
----

2
examples/ssl_hello_world/src/ssl_hello_world_app.erl
View file

@ -22,7 +22,7 @@ start(_Type, _Args) ->
{cacertfile, PrivDir ++ "/ssl/cowboy-ca.crt"},
{certfile, PrivDir ++ "/ssl/server.crt"},
{keyfile, PrivDir ++ "/ssl/server.key"}
], #{env, [{dispatch, Dispatch}]}),
], #{env => #{dispatch => Dispatch}}),
ssl_hello_world_sup:start_link().
stop(_State) ->

8
examples/ssl_hello_world/src/toppage_handler.erl
View file

@ -6,7 +6,7 @@
-export([init/2]).
init(Req, Opts) ->
Req2 = cowboy_req:reply(200, [
{<<"content-type">>, <<"text/plain">>}
], <<"Hello world!">>, Req),
{ok, Req2, Opts}.
cowboy_req:reply(200, #{
<<"content-type">> => <<"text/plain">>
}, <<"Hello world!">>, Req),
{ok, Req, Opts}.