NGHTTP(1) nghttp2 NGHTTP(1) NAME nghttp - HTTP/2 client SYNOPSIS nghttp [OPTIONS]... <URI>... DESCRIPTION HTTP/2 client <URI> Specify URI to access. OPTIONS -v, --verbose Print debug information such as reception and transmis- sion of frames and name/value pairs. Specifying this option multi- ple times increases verbosity. -n, --null-out Discard downloaded data. -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. -t, --timeout=<DURATION> Timeout each request after <DURATION>. Set 0 to disable timeout. -w, --window-bits=<N> Sets the stream level initial window size to 2**<N>-1. -W, --connection-window-bits=<N> Sets the connection level initial window size to 2**<N>-1. -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 prior- ity. The priority order, from highest to lowest, is html itself, css, javascript and images. -s, --stat Print statistics. -H, --header=<HEADER> Add a header to the requests. Example: -H':method: PUT' --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 -d option to send request body. Exam- ple: --trailer 'foo: bar'. --cert=<CERT> Use the specified client certificate file. The file must be in PEM format. --key=<KEY> Use the client private key file. The file must be in PEM format. -d, --data=<PATH> Post FILE to server. If '-' is given, data will be read from stdin. -m, --multiply=<N> Request each URI <N> times. By default, same URI is not requested twice. This option disables it too. -u, --upgrade Perform HTTP Upgrade for HTTP/2. This option is ignored if the re- quest URI has https scheme. If -d is used, the HTTP upgrade request is performed with OPTIONS method. --extpri=<PRI> Sets RFC 9218 priority of given URI. <PRI> must be the wire format of priority header field (e.g., "u=3,i"). This option can be used multiple times, and N-th --extpri option sets priority of N-th URI in the command line. If the number of this option is less than the number of URI, the last option value is repeated. If there is no --extpri option, urgency is 3, and incre- mental is false. -M, --peer-max-concurrent-streams=<N> Use <N> as SETTINGS_MAX_CONCURRENT_STREAMS value of remote end- point as if it is received in SETTINGS frame. Default: 100 -c, --header-table-size=<SIZE> Specify decoder header table size. If this option is used mul- tiple 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. --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. -b, --padding=<N> Add at most <N> bytes to a frame payload as padding. Specify 0 to disable padding. -r, --har=<PATH> Output HTTP transactions <PATH> in HAR format. If '-' is given, data is written to stdout. --color Force colored log output. --continuation Send large header to test CONTINUATION. --no-content-length Don't send content-length header field. --hexdump Display the incoming traffic in hexadecimal (Canonical hex+ASCII display). If SSL/TLS is used, decrypted data are used. --no-push Disable server push. --max-concurrent-streams=<N> The number of concurrent pushed streams this client accepts. --expect-continue Perform an Expect/Continue handshake: wait to send DATA (up to a short timeout) until the server sends a 100 Continue interim re- sponse. This option is ignored unless combined with the -d option. -y, --no-verify-peer Suppress warning on server certificate verification failure. --ktls Enable ktls. --version Display version information and exit. -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. SEE ALSO nghttpd(1), nghttpx(1), h2load(1) Author Tatsuhiro Tsujikawa Copyright 2012, 2015, 2016, Tatsuhiro Tsujikawa 1.69.0 Apr 19, 2026 NGHTTP(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO | Author | Copyright
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