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Man Pages
COAP-RD(5) coap-rd Manual COAP-RD(5)

coap-rd, coap-rd-gnutls, coap-rd-mbedtls, coap-rd-openssl, coap-rd-notls - A CoAP Resource Directory based on libcoap

coap-rd [-g group] [-G group_if] [-p port] [-v num] [-A address] [[-h hint] [-k key]] [[-c certfile] [-n] [-C cafile] [-R trusted_casfile]]

For coap-rd versions that use libcoap compiled for different (D)TLS libraries, coap-rd-notls, coap-rd-gnutls, coap-rd-openssl, coap-rd-mbedtls or coap-rd-tinydtls may be available. Otherwise, coap-rd uses the default libcoap (D)TLS support.

coap-rd is a simple CoAP Resource Directory server that can handle resource registrations using the protocol CoAP (RFC 7252).

-g group
Join specified multicast group on startup. Note: DTLS over multicast is not currently supported.

-G group_if

Use this interface for listening for the multicast group. This can be different from the implied interface if the -A option is used.

-p port

The port on the given address will be listening for incoming connections. If (D)TLS is supported, then port + 1 will also be listened on for (D)TLS connections. The default port is 5683 if not given any other value.

-v num

The verbosity level to use (default: 3, maximum is 9). Above 7, there is increased verbosity in GnuTLS and OpenSSL logging.

-A address

The local address of the interface which the server has to listen on.

(If supported by underlying (D)TLS library)

-h hint

Identity Hint to send. Default is CoAP. Zero length is no hint.

-k key

Pre-shared key to use for inbound connections. This cannot be empty if defined. Note: if -c cafile is defined, you need to define -k key as well to have the server support both PSK and PKI.

(If supported by underlying (D)TLS library)

-c certfile

Use the specified PEM file which contains the CERTIFICATE and PRIVATE KEY information. Note: if -k key is defined, you need to define -c certfile as well to have the server support both PSK and PKI.

-n

Disable remote peer certificate checking. This gives clients the ability to use PKI, but without any defined certificates.

-C cafile

PEM file that contains a list of one or more CAs that are to be passed to the client for the client to determine what client certificate to use. Normally, this list of CAs would be the root CA and and any intermediate CAs. Ideally the server certificate should be signed by the same CA so that mutual authentication can take place. The contents of cafile are added to the trusted store of root CAs. Using the -C or -R options will will trigger the validation of the client certificate unless overridden by the -n option.

-R trust_casfile

PEM file containing the set of trusted root CAs that are to be used to validate the client certificate. Alternatively, this can point to a directory containing a set of CA PEM files. The -C cafile CA does not have to be in this list and is trusted for the validation. Using -R trust_casfile disables common CA mutual authentication which can only be done by using -C cafile. Using the -C or -R options will will trigger the validation of the server certificate unless overridden by the -n option.

•Example

coap-rd -A ::1

Let the server listen on localhost (port 5683).

•Example

coap-rd -A ::1 -k mysecretKey -h myhint

Let the server listen on localhost (port 5683 and 5684) with the server set up for PSK authentication.

•Example

coap-rd -A ::1 -p 13011

Quite the same, except listening port is 13011 (and not the default port 5683).

•Example

coap-rd -A 2001:db8:81a8:0:6ef0:dead:feed:beef  -v 5

The listening address is set to 2001:db8:81a8:0:6ef0:dead:feed:beef and the verbosity level is set to 5.

•Example

coap-rd -A 2001:db8:81a8:0:6ef0:dead:feed:beef  -g FF02::FD

Set listening address to 2001:db8:81a8:0:6ef0:dead:feed:beef and join the All CoAP Nodes multicast group FF02::FD.

There are no configuration files.

0
Success

1

Failure (syntax or usage error; configuration error; document processing failure; unexpected error)

Please report bugs on the mailing list for libcoap: libcoap-developers@lists.sourceforge.net or raise an issue on GitHub at https://github.com/obgm/libcoap/issues

The libcoap project <libcoap-developers@lists.sourceforge.net>
04/13/2022 coap-rd 4.3.0

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