nghttp - Man Page

nghttp [Options]... <URI>...

HTTP/2 client

<URI>

Specify URI to access.

-v,  --verbose

Print   debug   information   such  as   reception   and transmission of frames and name/value pairs.  Specifying this option multiple 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 priority.  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.  Example: --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 request 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 incremental is false.

-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

-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.

--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 response. This option is ignored unless combined with the -d option.

-y,  --no-verify-peer

Suppress  warning  on  server  certificate  verification failure.

--ktls

Enable ktls.

--no-rfc7540-pri

Disable RFC7540 priorities.

--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.

nghttpd(1), nghttpx(1), h2load(1)

Tatsuhiro Tsujikawa

2012, 2015, 2016, Tatsuhiro Tsujikawa

h2load(1), nghttpd(1), nghttpx(1).