Michał Łyszczek
91bca8899c
This patch adds support for two new format specifiers (%f and %d) to print float and double data. Generally it's not save to directly take native binary data of one machine and print it on another one (since mosquitto is multiarch). But in case of floats it's save to print representation of it, if __STDC_IEC_559__ is defined. In C99 Annex F, standard we can read: > This annex specifies C language support for the > IEC 60559 floating-point standard. > (...) > An implementation that defines __STDC_IEC_559__ > shall conform to the specifications in this annex All float printing code is behind __STDC_IEC_559__, so if that is not defined, floating print will be disabled and error returned to user. Documentation also describes restrictions about printing floats. Signed-off-by: Michał Łyszczek <michal.lyszczek@bofc.pl>
Eclipse Mosquitto
Mosquitto is an open source implementation of a server for version 5.0, 3.1.1,
and 3.1 of the MQTT protocol. It also includes a C and C++ client library, and
the mosquitto_pub and mosquitto_sub utilities for publishing and
subscribing.
Links
See the following links for more information on MQTT:
- Community page: http://mqtt.org/
- MQTT v3.1.1 standard: https://docs.oasis-open.org/mqtt/mqtt/v3.1.1/mqtt-v3.1.1.html
- MQTT v5.0 standard: https://docs.oasis-open.org/mqtt/mqtt/v5.0/mqtt-v5.0.html
Mosquitto project information is available at the following locations:
- Main homepage: https://mosquitto.org/
- Find existing bugs or submit a new bug: https://github.com/eclipse/mosquitto/issues
- Source code repository: https://github.com/eclipse/mosquitto
There is also a public test server available at https://test.mosquitto.org/
Installing
See https://mosquitto.org/download/ for details on installing binaries for various platforms.
Quick start
If you have installed a binary package the broker should have been started automatically. If not, it can be started with a basic configuration:
mosquitto
Then use mosquitto_sub to subscribe to a topic:
mosquitto_sub -t 'test/topic' -v
And to publish a message:
mosquitto_pub -t 'test/topic' -m 'hello world'
Documentation
Documentation for the broker, clients and client library API can be found in
the man pages, which are available online at https://mosquitto.org/man/. There
are also pages with an introduction to the features of MQTT, the
mosquitto_passwd utility for dealing with username/passwords, and a
description of the configuration file options available for the broker.
Detailed client library API documentation can be found at https://mosquitto.org/api/
Building from source
To build from source the recommended route for end users is to download the archive from https://mosquitto.org/download/.
On Windows and Mac, use cmake to build. On other platforms, just run make
to build. For Windows, see also README-windows.md.
If you are building from the git repository then the documentation will not
already be built. Use make binary to skip building the man pages, or install
docbook-xsl on Debian/Ubuntu systems.
Build Dependencies
- c-ares (libc-ares-dev on Debian based systems) - only when compiled with
make WITH_SRV=yes - cJSON - for client JSON output support. Disable with
make WITH_CJSON=noAuto detected with CMake. - libwebsockets (libwebsockets-dev) - enable with
make WITH_WEBSOCKETS=yes - openssl (libssl-dev on Debian based systems) - disable with
make WITH_TLS=no - pthreads - for client library thread support. This is required to support the
mosquitto_loop_start()andmosquitto_loop_stop()functions. If compiled without pthread support, the library isn't guaranteed to be thread safe. - uthash / utlist - bundled versions of these headers are provided, disable their use with
make WITH_BUNDLED_DEPS=no - xsltproc (xsltproc and docbook-xsl on Debian based systems) - only needed when building from git sources - disable with
make WITH_DOCS=no
Equivalent options for enabling/disabling features are available when using the CMake build.
Credits
Mosquitto was written by Roger Light roger@atchoo.org
Master: 
Develop: 
Fixes: 