b91e78318d
If we have e.g. max_inflight_messages set to 1000, and currently have 999 messages inflight, then when we send a new message to a client we have to iterate over the whole list to get to the newest message. This change means that we start of the back of the list to find the newest items, which reduces overhead. |
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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.txt.
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 - libwebsockets (libwebsockets-dev) - enable with
make WITH_WEBSOCKETS=yes - openssl (libssl-dev on Debian based systems) - disable with
make WITH_TLS=no - xsltproc (xsltproc and docbook-xsl on Debian based systems) - only needed when building from git sources - disable with
make WITH_DOCS=no - uthash / utlist - bundled versions of these headers are provided, disable their use with
make WITH_BUNDLED_DEPS=no - cJSON - for client JSON output support. Disable with
make WITH_CJSON=noAuto detected with CMake.
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: 