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= 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 <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)=[])
----