= POST parameter echo 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 As this example echoes a POST parameter, it is a little more complex to test. Some browsers feature tools that allow you to perform one such request, or you can use the command line tool `curl` as we will demonstrate. == HTTP/1.1 example output [source,bash] ---- $ curl -i -d echo=echomeplz http://localhost:8080 HTTP/1.1 200 OK connection: keep-alive server: Cowboy date: Fri, 28 Sep 2012 04:12:36 GMT content-length: 9 content-type: text/plain; charset=utf-8 echomeplz ---- == HTTP/2 example output [source,bash] ---- $ echo echo=echomeplz | nghttp -v -d - http://localhost:8080 [ 0.000] Connected [ 0.000] send SETTINGS frame (niv=2) [SETTINGS_MAX_CONCURRENT_STREAMS(0x03):100] [SETTINGS_INITIAL_WINDOW_SIZE(0x04):65535] [ 0.000] send PRIORITY frame (dep_stream_id=0, weight=201, exclusive=0) [ 0.000] send PRIORITY frame (dep_stream_id=0, weight=101, exclusive=0) [ 0.001] send PRIORITY frame (dep_stream_id=0, weight=1, exclusive=0) [ 0.001] send PRIORITY frame (dep_stream_id=7, weight=1, exclusive=0) [ 0.001] send PRIORITY frame (dep_stream_id=3, weight=1, exclusive=0) [ 0.001] send HEADERS frame ; END_HEADERS | PRIORITY (padlen=0, dep_stream_id=11, weight=16, exclusive=0) ; Open new stream :method: POST :path: / :scheme: http :authority: localhost:8080 accept: */* accept-encoding: gzip, deflate user-agent: nghttp2/1.7.1 content-length: 15 [ 0.001] send DATA frame [ 0.001] send DATA frame ; END_STREAM [ 0.012] recv SETTINGS frame (niv=0) [ 0.012] recv SETTINGS frame ; ACK (niv=0) [ 0.012] send SETTINGS frame ; ACK (niv=0) [ 0.020] recv (stream_id=13) :status: 200 [ 0.020] recv (stream_id=13) content-length: 10 [ 0.020] recv (stream_id=13) content-type: text/plain; charset=utf-8 [ 0.020] recv (stream_id=13) date: Thu, 09 Jun 2016 09:19:35 GMT [ 0.020] recv (stream_id=13) server: Cowboy [ 0.020] recv HEADERS frame ; END_HEADERS (padlen=0) ; First response header echomeplz [ 0.020] recv DATA frame ; END_STREAM [ 0.020] send GOAWAY frame (last_stream_id=0, error_code=NO_ERROR(0x00), opaque_data(0)=[]) ----