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diff --git a/doc/nghttp.1 b/doc/nghttp.1 new file mode 100644 index 0000000..ca58440 --- /dev/null +++ b/doc/nghttp.1 @@ -0,0 +1,336 @@ +.\" Man page generated from reStructuredText. +. +. +.nr rst2man-indent-level 0 +. +.de1 rstReportMargin +\\$1 \\n[an-margin] +level \\n[rst2man-indent-level] +level margin: \\n[rst2man-indent\\n[rst2man-indent-level]] +- +\\n[rst2man-indent0] +\\n[rst2man-indent1] +\\n[rst2man-indent2] +.. +.de1 INDENT +.\" .rstReportMargin pre: +. RS \\$1 +. nr rst2man-indent\\n[rst2man-indent-level] \\n[an-margin] +. nr rst2man-indent-level +1 +.\" .rstReportMargin post: +.. +.de UNINDENT +. RE +.\" indent \\n[an-margin] +.\" old: \\n[rst2man-indent\\n[rst2man-indent-level]] +.nr rst2man-indent-level -1 +.\" new: \\n[rst2man-indent\\n[rst2man-indent-level]] +.in \\n[rst2man-indent\\n[rst2man-indent-level]]u +.. +.TH "NGHTTP" "1" "Feb 13, 2023" "1.52.0" "nghttp2" +.SH NAME +nghttp \- HTTP/2 client +.SH SYNOPSIS +.sp +\fBnghttp\fP [OPTIONS]... <URI>... +.SH DESCRIPTION +.sp +HTTP/2 client +.INDENT 0.0 +.TP +.B <URI> +Specify URI to access. +.UNINDENT +.SH OPTIONS +.INDENT 0.0 +.TP +.B \-v, \-\-verbose +Print debug information such as reception and +transmission of frames and name/value pairs. Specifying +this option multiple times increases verbosity. +.UNINDENT +.INDENT 0.0 +.TP +.B \-n, \-\-null\-out +Discard downloaded data. +.UNINDENT +.INDENT 0.0 +.TP +.B \-O, \-\-remote\-name +Save download data in the current directory. The +filename is derived from URI. If URI ends with \(aq\fI/\fP\(aq, +\(aqindex.html\(aq is used as a filename. Not implemented +yet. +.UNINDENT +.INDENT 0.0 +.TP +.B \-t, \-\-timeout=<DURATION> +Timeout each request after <DURATION>. Set 0 to disable +timeout. +.UNINDENT +.INDENT 0.0 +.TP +.B \-w, \-\-window\-bits=<N> +Sets the stream level initial window size to 2**<N>\-1. +.UNINDENT +.INDENT 0.0 +.TP +.B \-W, \-\-connection\-window\-bits=<N> +Sets the connection level initial window size to +2**<N>\-1. +.UNINDENT +.INDENT 0.0 +.TP +.B \-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. +.UNINDENT +.INDENT 0.0 +.TP +.B \-s, \-\-stat +Print statistics. +.UNINDENT +.INDENT 0.0 +.TP +.B \-H, \-\-header=<HEADER> +Add a header to the requests. Example: \fI\%\-H\fP\(aq:method: PUT\(aq +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-trailer=<HEADER> +Add a trailer header to the requests. <HEADER> must not +include pseudo header field (header field name starting +with \(aq:\(aq). To send trailer, one must use \fI\%\-d\fP option to +send request body. Example: \fI\%\-\-trailer\fP \(aqfoo: bar\(aq. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-cert=<CERT> +Use the specified client certificate file. The file +must be in PEM format. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-key=<KEY> +Use the client private key file. The file must be in +PEM format. +.UNINDENT +.INDENT 0.0 +.TP +.B \-d, \-\-data=<PATH> +Post FILE to server. If \(aq\-\(aq is given, data will be read +from stdin. +.UNINDENT +.INDENT 0.0 +.TP +.B \-m, \-\-multiply=<N> +Request each URI <N> times. By default, same URI is not +requested twice. This option disables it too. +.UNINDENT +.INDENT 0.0 +.TP +.B \-u, \-\-upgrade +Perform HTTP Upgrade for HTTP/2. This option is ignored +if the request URI has https scheme. If \fI\%\-d\fP is used, the +HTTP upgrade request is performed with OPTIONS method. +.UNINDENT +.INDENT 0.0 +.TP +.B \-p, \-\-weight=<WEIGHT> +Sets weight of given URI. This option can be used +multiple times, and N\-th \fI\%\-p\fP option sets weight of N\-th +URI in the command line. If the number of \fI\%\-p\fP option is +less than the number of URI, the last \fI\%\-p\fP option value is +repeated. If there is no \fI\%\-p\fP option, default weight, 16, +is assumed. The valid value range is +[1, 256], inclusive. +.UNINDENT +.INDENT 0.0 +.TP +.B \-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. +.sp +Default: \fB100\fP +.UNINDENT +.INDENT 0.0 +.TP +.B \-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. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-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. +.UNINDENT +.INDENT 0.0 +.TP +.B \-b, \-\-padding=<N> +Add at most <N> bytes to a frame payload as padding. +Specify 0 to disable padding. +.UNINDENT +.INDENT 0.0 +.TP +.B \-r, \-\-har=<PATH> +Output HTTP transactions <PATH> in HAR format. If \(aq\-\(aq +is given, data is written to stdout. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-color +Force colored log output. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-continuation +Send large header to test CONTINUATION. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-no\-content\-length +Don\(aqt send content\-length header field. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-no\-dep +Don\(aqt send dependency based priority hint to server. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-hexdump +Display the incoming traffic in hexadecimal (Canonical +hex+ASCII display). If SSL/TLS is used, decrypted data +are used. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-no\-push +Disable server push. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-max\-concurrent\-streams=<N> +The number of concurrent pushed streams this client +accepts. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-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 \fI\%\-d\fP option. +.UNINDENT +.INDENT 0.0 +.TP +.B \-y, \-\-no\-verify\-peer +Suppress warning on server certificate verification +failure. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-ktls +Enable ktls. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-no\-rfc7540\-pri +Disable RFC7540 priorities. +.UNINDENT +.INDENT 0.0 +.TP +.B \-\-version +Display version information and exit. +.UNINDENT +.INDENT 0.0 +.TP +.B \-h, \-\-help +Display this help and exit. +.UNINDENT +.sp +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). +.sp +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. +.SH DEPENDENCY BASED PRIORITY +.sp +nghttp sends priority hints to server by default unless +\fI\%\-\-no\-dep\fP 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\(aqs 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. +.sp +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: +.INDENT 0.0 +.INDENT 3.5 +.sp +.nf +.ft C + +\-\-\-\-\-+ + |id=0 | + +\-\-\-\-\-+ + ^ ^ ^ + w=201 / | \e w=1 + / | \e + / w=101| \e + +\-\-\-\-\-+ +\-\-\-\-\-+ +\-\-\-\-\-+ + |id=3 | |id=5 | |id=7 | + +\-\-\-\-\-+ +\-\-\-\-\-+ +\-\-\-\-\-+ + ^ ^ +w=1 | w=1 | + | | + +\-\-\-\-\-+ +\-\-\-\-\-+ + |id=11| |id=9 | + +\-\-\-\-\-+ +\-\-\-\-\-+ +.ft P +.fi +.UNINDENT +.UNINDENT +.sp +In the above figure, \fBid\fP means stream ID, and \fBw\fP 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. +.sp +The URIs given in the command\-line depend on stream 11 with the weight +given in \fI\%\-p\fP option, which defaults to 16. +.sp +If \fI\%\-a\fP 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. +.sp +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. +.SH SEE ALSO +.sp +\fBnghttpd(1)\fP, \fBnghttpx(1)\fP, \fBh2load(1)\fP +.SH AUTHOR +Tatsuhiro Tsujikawa +.SH COPYRIGHT +2012, 2015, 2016, Tatsuhiro Tsujikawa +.\" Generated by docutils manpage writer. +. |