cowboy/examples/ssl_hello_world

= Secure hello world example

To try this example, you need GNU `make` and `git` in your PATH.

To build and run the example, use the following command:

[source,bash]
$ make run

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`.

Recent browsers will communicate using HTTP/2. Older browsers
will use HTTP/1.1.

== HTTP/1.1 example output

[source,bash]
----
$ curl --cacert priv/ssl/cowboy-ca.crt -i https://localhost:8443
HTTP/1.1 200 OK
connection: keep-alive
server: Cowboy
date: Fri, 28 Sep 2012 04:10:25 GMT
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
(niv=0)
[ 0.009] send SETTINGS frame
(niv=2)
[SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
[SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[ 0.009] send SETTINGS frame
; ACK
(niv=0)
[ 0.009] send PRIORITY frame
(dep_stream_id=0, weight=201, exclusive=0)
[ 0.009] send PRIORITY frame
(dep_stream_id=0, weight=101, exclusive=0)
[ 0.009] send PRIORITY frame
(dep_stream_id=0, weight=1, exclusive=0)
[ 0.009] send PRIORITY frame
(dep_stream_id=7, weight=1, exclusive=0)
[ 0.009] send PRIORITY frame
(dep_stream_id=3, weight=1, exclusive=0)
[ 0.009] send HEADERS frame
; 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
; 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
; END_HEADERS
(padlen=0)
; First response header
Hello world![ 0.010] recv DATA frame
; END_STREAM
[ 0.010] send GOAWAY frame
(last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])
----