paho_c_sub_static - receive (subscribe to) data from an MQTT server

paho_c_sub_static  receives data from an MQTT server using the Eclipse Paho C client asynchronous library
       (MQTTAsync).  MQTT is a protocol, operating over TCP/IP, which allows programs to easily communicate with
       each other through a server.  Messages are published to topics and delivered to any subscribers to  those
       topics.  The corresponding publisher program paho_c_pub allows MQTT messages to be sent.

       The default mode of operation is to output each message to stdout terminated by the delimiter.

       paho_c_sub_static - receive (subscribe to) data from an MQTT server

-t--topic
              The MQTT topic to publish the data to.

       -c--connection
              The  MQTT  URI  to  connect  to, a combination of transport prefix, host, port and for websockets,
              topic.  To connect using TCP use the tcp prefix, for example:  tcp://localhost:1883.   An  example
              using     SSL/TLS:     ssl://localhost:1883.      An    example    for    websockets,    insecure:
              ws://localhost:1883/topic, and secure: wss://localhost:80/topic.

       -h--host The TCP/IP host name of the MQTT server to connect to. Along with  the  --port  option,  an  older
              alternative to using --connection.

       -p--port The  TCP/IP  port  number of the MQTT server to connect to. Along with the --host option, an older
              alternative to using --connection.

       -q--qos  The MQTT QoS on which to publish the message. The alternatives are 0, 1 or 2.

       -V--MQTTversion
              The version of the MQTT protocol to use.  Valid options are 31 (or mqttv31), 311 (mqttv311) and  5
              (or mqttv5).

       --quiet
              Do not print error messages.

       --trace
              Print library internal trace.  Valid levels are min, max, error and protocol.

       -R--no-retained
              Do not print messages which have the MQTT retained flag set.

       --delimiter
              The delimiter string to append to each message when printing.  Defaults to newline.

       --no-delimiter
              Do not add a delimiter to each message when printing.

       --will-topic
              Sets  the  MQTT  will message topic to publish to. If the application ends without sending an MQTT
              disconnect, the will message will be published to this topic.

       --will-payload
              Only used if will-topic is set. Sets the MQTT will message to be published.

       --will-qos
              Only used if will-topic is set. Sets the MQTT QoS at which the  will  message  is  published.  The
              alternatives are 0, 1 or 2.

       --will-retain
              Only used if will-topic is set. Sets the MQTT retained flag on the will message.

       --cafile
              Only used with a TLS connection. The name of a file for the OpenSSL trust store.

       --capath
              Only used with a TLS connection. The name of a directory holding OpenSSL trusted certificates.

       --cert Only  used  with  a  TLS  connection.  The name of a file for the TLS keystore containing a client
              certificate to be presented.

       --key  Only used with a TLS connection. The name of a file containing the client private key.

       --keypass
              Only used with a TLS connection. The password for the client private key file, if needed.

       --ciphers
              Only used with a TLS connection. A list of cipher suites that  the  client  will  present  to  the
              server during the TLS handshake.

       --insecure
              Only  used  with a TLS connection. Don't check that the server certificate common name matches the
              hostname.

paho_c_pub(1)  paho_c_pub_static(1)  paho_c_sub(1)  paho_cs_pub(1)  paho_cs_pub_static(1)  paho_cs_sub(1)
       paho_cs_sub_static(1)

http://eclipse.org/paho                     31 December 2020 (v1.3.8)                      PAHO_C_SUB_STATIC(1L)

paho_c_sub_static [topic] [-t|--topictopic] [-c|--connectionconnection] [-h|--hosthostname] [-p|--portportnumber]  [-i|--clientidclientid]  [-u|--usernameusername] [-P|--passwordpassword] [-k|--keepalivekeepalive-timeout] [-V|--MQTT-version31|311|5]
       [-q|--qos0|1|2] [-R|--no-retained] [--delimiterdelimiter] [--no-delimiter]
       [--quiet] [--verbose] [--tracemin|max|error|protocol]
       [--will-topicwill-topic] [--will-payloadwill-payload] [--will-retain] [--will-qos0|1|2]
       [--cafilecafile] [--capathcapath] [--certcertfile] [--keykeyfile]  [--keypasspassword]  [--cipherscipher-string] [--insecure]