-d number, --debug=number
Enable debugging. This option takes an integer number as
its argument. The value of number is constrained to
being:
in the range 0 through 9999
Specifies the debug level.
--sni-hostname=string
Server's hostname for server name extension.
Server name of type host_name that the server will
recognise as its own. If the server receives client hello
with different name, it will send a warning-level
unrecognized_name alert.
--sni-hostname-fatal
Send fatal alert on sni-hostname mismatch.
--alpn=string
Specify ALPN protocol to be enabled by the server. This
option may appear an unlimited number of times.
Specify the (textual) ALPN protocol for the server to use.
--alpn-fatal
Send fatal alert on non-matching ALPN name.
--noticket
Don't accept session tickets.
--earlydata
Accept early data.
--maxearlydata=number
The maximum early data size to accept. This option takes
an integer number as its argument. The value of number is
constrained to being:
greater than or equal to 1
--nocookie
Don't require cookie on DTLS sessions.
-g, --generate
Generate Diffie-Hellman parameters.
-q, --quiet
Suppress some messages.
--nodb Do not use a resumption database.
--http Act as an HTTP server.
--echo Act as an Echo server.
--crlf Do not replace CRLF by LF in Echo server mode.
-u, --udp
Use DTLS (datagram TLS) over UDP.
--mtu=number
Set MTU for datagram TLS. This option takes an integer
number as its argument. The value of number is
constrained to being:
in the range 0 through 17000
--srtp-profiles=string
Offer SRTP profiles.
-a, --disable-client-cert
Do not request a client certificate. This option must not
appear in combination with any of the following options:
require-client-cert.
-r, --require-client-cert
Require a client certificate.
This option before 3.6.0 used to imply --verify-client-
cert. Since 3.6.0 it will no longer verify the
certificate by default.
--verify-client-cert
If a client certificate is sent then verify it..
Do not require, but if a client certificate is sent then
verify it and close the connection if invalid.
-b, --heartbeat
Activate heartbeat support.
Regularly ping client via heartbeat extension messages
--x509fmtder
Use DER format for certificates to read from.
--priority=string
Priorities string.
TLS algorithms and protocols to enable. You can use
predefined sets of ciphersuites such as PERFORMANCE,
NORMAL, SECURE128, SECURE256. The default is NORMAL.
Check the GnuTLS manual on section 'Priority
strings' for more information on allowed keywords
--dhparams=file
DH params file to use.
--x509cafile=string
Certificate file or PKCS #11 URL to use.
--x509crlfile=file
CRL file to use.
--pgpkeyfile=file
PGP Key file to use.
NOTE: THIS OPTION IS DEPRECATED
--x509keyfile=string
X.509 key file or PKCS #11 URL to use. This option may
appear an unlimited number of times.
Specify the private key file or URI to use; it must
correspond to the certificate specified in --x509certfile.
Multiple keys and certificates can be specified with this
option and in that case each occurrence of keyfile must be
followed by the corresponding x509certfile or vice-versa.
--x509certfile=string
X.509 Certificate file or PKCS #11 URL to use. This
option may appear an unlimited number of times.
Specify the certificate file or URI to use; it must
correspond to the key specified in --x509keyfile. Multiple
keys and certificates can be specified with this option
and in that case each occurrence of keyfile must be
followed by the corresponding x509certfile or vice-versa.
--x509dsakeyfile
This is an alias for the --x509keyfile option.
NOTE: THIS OPTION IS DEPRECATED
--x509dsacertfile
This is an alias for the --x509certfile option.
NOTE: THIS OPTION IS DEPRECATED
--x509ecckeyfile
This is an alias for the --x509keyfile option.
NOTE: THIS OPTION IS DEPRECATED
--x509ecccertfile
This is an alias for the --x509certfile option.
NOTE: THIS OPTION IS DEPRECATED
--rawpkkeyfile=string
Private key file (PKCS #8 or PKCS #12) or PKCS #11 URL to
use. This option may appear an unlimited number of times.
Specify the private key file or URI to use; it must
correspond to the raw public-key specified in --rawpkfile.
Multiple key pairs can be specified with this option and
in that case each occurrence of keyfile must be followed
by the corresponding rawpkfile or vice-versa.
In order to instruct the application to negotiate raw
public keys one must enable the respective certificate
types via the priority strings (i.e. CTYPE-CLI-* and
CTYPE-SRV-* flags).
Check the GnuTLS manual on section 'Priority
strings' for more information on how to set certificate
types.
--rawpkfile=string
Raw public-key file to use. This option may appear an
unlimited number of times. This option must appear in
combination with the following options: rawpkkeyfile.
Specify the raw public-key file to use; it must correspond
to the private key specified in --rawpkkeyfile. Multiple
key pairs can be specified with this option and in that
case each occurrence of keyfile must be followed by the
corresponding rawpkfile or vice-versa.
In order to instruct the application to negotiate raw
public keys one must enable the respective certificate
types via the priority strings (i.e. CTYPE-CLI-* and
CTYPE-SRV-* flags).
Check the GnuTLS manual on section 'Priority
strings' for more information on how to set certificate
types.
--srppasswd=file
SRP password file to use.
--srppasswdconf=file
SRP password configuration file to use.
--pskpasswd=file
PSK password file to use.
--pskhint=string
PSK identity hint to use.
--ocsp-response=string
The OCSP response to send to client. This option may
appear an unlimited number of times.
If the client requested an OCSP response, return data from
this file to the client.
--ignore-ocsp-response-errors
Ignore any errors when setting the OCSP response.
That option instructs gnutls to not attempt to match the
provided OCSP responses with the certificates.
-p number, --port=number
The port to connect to. This option takes an integer
number as its argument.
-l, --list
Print a list of the supported algorithms and modes.
Print a list of the supported algorithms and modes. If a
priority string is given then only the enabled
ciphersuites are shown.
--provider=file
Specify the PKCS #11 provider library.
This will override the default options in
/etc/gnutls/pkcs11.conf
--keymatexport=string
Label used for exporting keying material.
--keymatexportsize=number
Size of the exported keying material. This option takes
an integer number as its argument.
--recordsize=number
The maximum record size to advertise. This option takes
an integer number as its argument. The value of number is
constrained to being:
in the range 0 through 16384
--httpdata=file
The data used as HTTP response.
-h, --help
Display usage information and exit.
-!, --more-help
Pass the extended usage information through a pager.
-v [{v|c|n --version [{v|c|n}]}]
Output version of program and exit. The default mode is
`v', a simple version. The `c' mode will print copyright
information and `n' will print the full copyright notice.
