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diff --git a/doc/nghttp.1.rst b/doc/nghttp.1.rst new file mode 100644 index 0000000..e10f3ee --- /dev/null +++ b/doc/nghttp.1.rst @@ -0,0 +1,276 @@ + +.. GENERATED by help2rst.py. DO NOT EDIT DIRECTLY. + +.. program:: nghttp + +nghttp(1) +========= + +SYNOPSIS +-------- + +**nghttp** [OPTIONS]... <URI>... + +DESCRIPTION +----------- + +HTTP/2 client + +.. describe:: <URI> + + Specify URI to access. + +OPTIONS +------- + +.. option:: -v, --verbose + + Print debug information such as reception and + transmission of frames and name/value pairs. Specifying + this option multiple times increases verbosity. + +.. option:: -n, --null-out + + Discard downloaded data. + +.. option:: -O, --remote-name + + Save download data in the current directory. The + filename is derived from URI. If URI ends with '*/*', + 'index.html' is used as a filename. Not implemented + yet. + +.. option:: -t, --timeout=<DURATION> + + Timeout each request after <DURATION>. Set 0 to disable + timeout. + +.. option:: -w, --window-bits=<N> + + Sets the stream level initial window size to 2\*\*<N>-1. + +.. option:: -W, --connection-window-bits=<N> + + Sets the connection level initial window size to + 2\*\*<N>-1. + +.. option:: -a, --get-assets + + Download assets such as stylesheets, images and script + files linked from the downloaded resource. Only links + whose origins are the same with the linking resource + will be downloaded. nghttp prioritizes resources using + HTTP/2 dependency based priority. The priority order, + from highest to lowest, is html itself, css, javascript + and images. + +.. option:: -s, --stat + + Print statistics. + +.. option:: -H, --header=<HEADER> + + Add a header to the requests. Example: :option:`-H`\':method: PUT' + +.. option:: --trailer=<HEADER> + + Add a trailer header to the requests. <HEADER> must not + include pseudo header field (header field name starting + with ':'). To send trailer, one must use :option:`-d` option to + send request body. Example: :option:`--trailer` 'foo: bar'. + +.. option:: --cert=<CERT> + + Use the specified client certificate file. The file + must be in PEM format. + +.. option:: --key=<KEY> + + Use the client private key file. The file must be in + PEM format. + +.. option:: -d, --data=<PATH> + + Post FILE to server. If '-' is given, data will be read + from stdin. + +.. option:: -m, --multiply=<N> + + Request each URI <N> times. By default, same URI is not + requested twice. This option disables it too. + +.. option:: -u, --upgrade + + Perform HTTP Upgrade for HTTP/2. This option is ignored + if the request URI has https scheme. If :option:`-d` is used, the + HTTP upgrade request is performed with OPTIONS method. + +.. option:: -p, --weight=<WEIGHT> + + Sets weight of given URI. This option can be used + multiple times, and N-th :option:`-p` option sets weight of N-th + URI in the command line. If the number of :option:`-p` option is + less than the number of URI, the last :option:`-p` option value is + repeated. If there is no :option:`-p` option, default weight, 16, + is assumed. The valid value range is + [1, 256], inclusive. + +.. option:: -M, --peer-max-concurrent-streams=<N> + + Use <N> as SETTINGS_MAX_CONCURRENT_STREAMS value of + remote endpoint as if it is received in SETTINGS frame. + + Default: ``100`` + +.. option:: -c, --header-table-size=<SIZE> + + Specify decoder header table size. If this option is + used multiple times, and the minimum value among the + given values except for last one is strictly less than + the last value, that minimum value is set in SETTINGS + frame payload before the last value, to simulate + multiple header table size change. + +.. option:: --encoder-header-table-size=<SIZE> + + Specify encoder header table size. The decoder (server) + specifies the maximum dynamic table size it accepts. + Then the negotiated dynamic table size is the minimum of + this option value and the value which server specified. + +.. option:: -b, --padding=<N> + + Add at most <N> bytes to a frame payload as padding. + Specify 0 to disable padding. + +.. option:: -r, --har=<PATH> + + Output HTTP transactions <PATH> in HAR format. If '-' + is given, data is written to stdout. + +.. option:: --color + + Force colored log output. + +.. option:: --continuation + + Send large header to test CONTINUATION. + +.. option:: --no-content-length + + Don't send content-length header field. + +.. option:: --no-dep + + Don't send dependency based priority hint to server. + +.. option:: --hexdump + + Display the incoming traffic in hexadecimal (Canonical + hex+ASCII display). If SSL/TLS is used, decrypted data + are used. + +.. option:: --no-push + + Disable server push. + +.. option:: --max-concurrent-streams=<N> + + The number of concurrent pushed streams this client + accepts. + +.. option:: --expect-continue + + Perform an Expect/Continue handshake: wait to send DATA + (up to a short timeout) until the server sends a 100 + Continue interim response. This option is ignored unless + combined with the :option:`-d` option. + +.. option:: -y, --no-verify-peer + + Suppress warning on server certificate verification + failure. + +.. option:: --ktls + + Enable ktls. + +.. option:: --no-rfc7540-pri + + Disable RFC7540 priorities. + +.. option:: --version + + Display version information and exit. + +.. option:: -h, --help + + Display this help and exit. + + + +The <SIZE> argument is an integer and an optional unit (e.g., 10K is +10 * 1024). Units are K, M and G (powers of 1024). + +The <DURATION> argument is an integer and an optional unit (e.g., 1s +is 1 second and 500ms is 500 milliseconds). Units are h, m, s or ms +(hours, minutes, seconds and milliseconds, respectively). If a unit +is omitted, a second is used as unit. + +DEPENDENCY BASED PRIORITY +------------------------- + +nghttp sends priority hints to server by default unless +:option:`--no-dep` is used. nghttp mimics the way Firefox employs to +manages dependency using idle streams. We follows the behaviour of +Firefox Nightly as of April, 2015, and nghttp's behaviour is very +static and could be different from Firefox in detail. But reproducing +the same behaviour of Firefox is not our goal. The goal is provide +the easy way to test out the dependency priority in server +implementation. + +When connection is established, nghttp sends 5 PRIORITY frames to idle +streams 3, 5, 7, 9 and 11 to create "anchor" nodes in dependency +tree: + +.. code-block:: text + + +-----+ + |id=0 | + +-----+ + ^ ^ ^ + w=201 / | \ w=1 + / | \ + / w=101| \ + +-----+ +-----+ +-----+ + |id=3 | |id=5 | |id=7 | + +-----+ +-----+ +-----+ + ^ ^ + w=1 | w=1 | + | | + +-----+ +-----+ + |id=11| |id=9 | + +-----+ +-----+ + +In the above figure, ``id`` means stream ID, and ``w`` means weight. +The stream 0 is non-existence stream, and forms the root of the tree. +The stream 7 and 9 are not used for now. + +The URIs given in the command-line depend on stream 11 with the weight +given in :option:`-p` option, which defaults to 16. + +If :option:`-a` option is used, nghttp parses the resource pointed by +URI given in command-line as html, and extracts resource links from +it. When requesting those resources, nghttp uses dependency according +to its resource type. + +For CSS, and Javascript files inside "head" element, they depend on +stream 3 with the weight 2. The Javascript files outside "head" +element depend on stream 5 with the weight 2. The mages depend on +stream 11 with the weight 12. The other resources (e.g., icon) depend +on stream 11 with the weight 2. + +SEE ALSO +-------- + +:manpage:`nghttpd(1)`, :manpage:`nghttpx(1)`, :manpage:`h2load(1)` |