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cowboy/examples/rest_hello_world/README.asciidoc
Loïc Hoguin 4293a40d9e Fix rest_hello_world example
2016-06-09 16:33:31 +02:00

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= REST 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 http://localhost:8080
== HTTP/1.1 example output
Request HTML:
[source,bash]
----
$ curl -i http://localhost:8080
HTTP/1.1 200 OK
connection: keep-alive
server: Cowboy
date: Fri, 28 Sep 2012 04:15:52 GMT
content-length: 136
content-type: text/html
vary: Accept
<html>
<head>
<meta charset="utf-8">
<title>REST Hello World!</title>
</head>
<body>
<p>REST Hello World as HTML!</p>
</body>
</html>
----
Request JSON:
[source,bash]
----
$ curl -i -H "Accept: application/json" http://localhost:8080
HTTP/1.1 200 OK
connection: keep-alive
server: Cowboy
date: Fri, 28 Sep 2012 04:16:46 GMT
content-length: 24
content-type: application/json
vary: Accept
{"rest": "Hello World!"}
----
Request plain text:
[source,bash]
----
$ curl -i -H "Accept: text/plain" http://localhost:8080
HTTP/1.1 200 OK
connection: keep-alive
server: Cowboy
date: Fri, 28 Sep 2012 04:18:35 GMT
content-length: 25
content-type: text/plain
vary: Accept
REST Hello World as text!
----
Request a non acceptable content-type:
[source,bash]
----
$ curl -i -H "Accept: text/css" http://localhost:8080
HTTP/1.1 406 Not Acceptable
connection: keep-alive
server: Cowboy
date: Fri, 28 Sep 2012 04:18:51 GMT
content-length: 0
----
== HTTP/2 example output
Request HTML:
[source,bash]
----
$ nghttp -v http://localhost:8080
[ 0.000] Connected
[ 0.000] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
(niv=2)
[SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
[SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
(dep_stream_id=0, weight=201, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
(dep_stream_id=0, weight=101, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
(dep_stream_id=0, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
(dep_stream_id=7, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
(dep_stream_id=3, weight=1, exclusive=0)
[ 0.000] 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: http
:authority: localhost:8080
accept: */*
accept-encoding: gzip, deflate
user-agent: nghttp2/1.7.1
[ 0.000] recv SETTINGS frame <length=0, flags=0x00, stream_id=0>
(niv=0)
[ 0.000] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.000] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.001] recv (stream_id=13) :status: 200
[ 0.001] recv (stream_id=13) content-length: 136
[ 0.001] recv (stream_id=13) content-type: text/html
[ 0.001] recv (stream_id=13) date: Thu, 09 Jun 2016 14:28:50 GMT
[ 0.001] recv (stream_id=13) server: Cowboy
[ 0.001] recv (stream_id=13) vary: accept
[ 0.001] recv HEADERS frame <length=52, flags=0x04, stream_id=13>
; END_HEADERS
(padlen=0)
; First response header
<html>
<head>
<meta charset="utf-8">
<title>REST Hello World!</title>
</head>
<body>
<p>REST Hello World as HTML!</p>
</body>
</html>[ 0.001] recv DATA frame <length=136, flags=0x01, stream_id=13>
; END_STREAM
[ 0.001] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
(last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])
----
Request JSON:
[source,bash]
----
$ nghttp -v -H "accept: application/json" http://localhost:8080
[ 0.000] Connected
[ 0.000] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
(niv=2)
[SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
[SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
(dep_stream_id=0, weight=201, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
(dep_stream_id=0, weight=101, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
(dep_stream_id=0, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
(dep_stream_id=7, weight=1, exclusive=0)
[ 0.001] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
(dep_stream_id=3, weight=1, exclusive=0)
[ 0.001] send HEADERS frame <length=46, 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: http
:authority: localhost:8080
accept: application/json
accept-encoding: gzip, deflate
user-agent: nghttp2/1.7.1
[ 0.001] recv SETTINGS frame <length=0, flags=0x00, stream_id=0>
(niv=0)
[ 0.001] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.001] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.001] recv (stream_id=13) :status: 200
[ 0.001] recv (stream_id=13) content-length: 24
[ 0.001] recv (stream_id=13) content-type: application/json
[ 0.001] recv (stream_id=13) date: Thu, 09 Jun 2016 14:29:00 GMT
[ 0.001] recv (stream_id=13) server: Cowboy
[ 0.001] recv (stream_id=13) vary: accept
[ 0.001] recv HEADERS frame <length=55, flags=0x04, stream_id=13>
; END_HEADERS
(padlen=0)
; First response header
{"rest": "Hello World!"}[ 0.002] recv DATA frame <length=24, flags=0x01, stream_id=13>
; END_STREAM
[ 0.002] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
(last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])
----
Request plain text:
[source,bash]
----
$ nghttp -v -H "accept: text/plain" http://localhost:8080
[ 0.000] Connected
[ 0.000] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
(niv=2)
[SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
[SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
(dep_stream_id=0, weight=201, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
(dep_stream_id=0, weight=101, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
(dep_stream_id=0, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
(dep_stream_id=7, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
(dep_stream_id=3, weight=1, exclusive=0)
[ 0.000] send HEADERS frame <length=42, 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: http
:authority: localhost:8080
accept: text/plain
accept-encoding: gzip, deflate
user-agent: nghttp2/1.7.1
[ 0.000] recv SETTINGS frame <length=0, flags=0x00, stream_id=0>
(niv=0)
[ 0.000] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.000] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.000] recv (stream_id=13) :status: 200
[ 0.000] recv (stream_id=13) content-length: 25
[ 0.000] recv (stream_id=13) content-type: text/plain
[ 0.000] recv (stream_id=13) date: Thu, 09 Jun 2016 14:28:25 GMT
[ 0.000] recv (stream_id=13) server: Cowboy
[ 0.000] recv (stream_id=13) vary: accept
[ 0.000] recv HEADERS frame <length=51, flags=0x04, stream_id=13>
; END_HEADERS
(padlen=0)
; First response header
REST Hello World as text![ 0.000] recv DATA frame <length=25, flags=0x01, stream_id=13>
; END_STREAM
[ 0.000] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
(last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])
----
Request a non acceptable content-type:
[source,bash]
----
$ nghttp -v -H "accept: text/css" http://localhost:8080
[ 0.000] Connected
[ 0.000] send SETTINGS frame <length=12, flags=0x00, stream_id=0>
(niv=2)
[SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100]
[SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535]
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=3>
(dep_stream_id=0, weight=201, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=5>
(dep_stream_id=0, weight=101, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=7>
(dep_stream_id=0, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=9>
(dep_stream_id=7, weight=1, exclusive=0)
[ 0.000] send PRIORITY frame <length=5, flags=0x00, stream_id=11>
(dep_stream_id=3, weight=1, exclusive=0)
[ 0.000] send HEADERS frame <length=41, 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: http
:authority: localhost:8080
accept: text/css
accept-encoding: gzip, deflate
user-agent: nghttp2/1.7.1
[ 0.007] recv SETTINGS frame <length=0, flags=0x00, stream_id=0>
(niv=0)
[ 0.007] recv SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.007] send SETTINGS frame <length=0, flags=0x01, stream_id=0>
; ACK
(niv=0)
[ 0.021] recv (stream_id=13) :status: 406
[ 0.021] recv (stream_id=13) content-length: 0
[ 0.021] recv (stream_id=13) date: Thu, 09 Jun 2016 14:29:15 GMT
[ 0.021] recv (stream_id=13) server: Cowboy
[ 0.021] recv HEADERS frame <length=39, flags=0x04, stream_id=13>
; END_HEADERS
(padlen=0)
; First response header
[ 0.021] recv DATA frame <length=0, flags=0x01, stream_id=13>
; END_STREAM
[ 0.021] send GOAWAY frame <length=8, flags=0x00, stream_id=0>
(last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[])
----
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