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@fpagliughi fpagliughi released this 08 Jan 03:40
v1.5.0
22f88a3

Updates to the Paho C++ Library

  • Code base updated to to C++17
    • Now a C++17 compiler is required to compile the library
  • CMake minimum required version raised to v3.13
    • Need a fairly recent CMake for C++17 support (>= v3.12)
    • #504 CMake v3.13 allows INSTALL(TARGETS) to work outside the current directory.
  • Clients always created for v5 persistence format, making it universal for any connection.
    • If the application specifies a version it is kept as a hint for default connections.
    • The version for the connection should be specified in the connect options.
  • The create_options now have all the parameters to create a client.
    • Can specify Server URL, Client ID, and persistence in the create options.
    • New client constructor that takes just the options object
    • The client caches a const create_options struct with all the creation parameters
    • Client creation internally simplified without breaking the public API
  • Expanded the message constmer to be a full client "event" consumer.
    • The events are for connected, connection_lost, disconnected, message arrived, and application shutdown.
    • The application can get client state change notifications without resorting to callbacks.
  • There's a new persistence_type (std::variant) that can hold any of the persistence specifiers (none, file directory, or user interface).
  • Most of the class static constants are now constexpr.
  • Removed the fake ReasonCode::MQTTPP_V3_CODE. Now all reason codes in a v3 connection are SUCCESS.
  • The mqtt::exception checks if the 'rc' return code actually contains a reason code error, amd if so, sets it as the reason code.
  • property can now report the typeid of its contained value.
  • The properties list implements a const iterator
  • Added a to_string() and operator<<() for reason codes.
  • thread_queue is now closable.
  • Added documentation for UNIX domain sockets coming in with Paho C v1.3.14
  • Removed the manual implementation of make_unique<>()
  • Added create_options assignment operators.
  • Fixed some corner cases for topic_filter::matches()
  • Cleaned up and fixed a number of example apps.
    • Most apps now except a server URI from the command line
    • 'data_publish' example uses C++17 std::filesystem for creating a file-based encrypted persistence for messages.
  • Updated local CI (buildtst.sh) for current compilers and unit tests.
  • Reorganized the source repository
  • Completely reformat the sources and added a .clang-format file (a project master and a slightly-different one for headers).
  • Added GitHub CI Action, removing legacy Travis and Appveyor files
  • #410 Added 'shutdown_event' to the event consumer and reworked consumer to prevent propagating exceptions on shutdown.
  • #451 Added low keep alive to async_publish_time to test connected/connection_lost callbacks
  • #503 Fixed issue that generated docs were empty.
  • #518 Add function for checking async consumer event queue size
  • #519 Fix potential deadlock in set_callback
  • #524 Fixed copy and move operations for 'subscribe_options'. Added unit tests.

Some updates from Paho C v1.3.13

  1. Unix domain socket support
  2. HTTP proxy improvements:
    • the environment variable PAHO_C_CLIENT_USE_HTTP_PROXY must be set to TRUE for http_proxy environment variable to be used
    • the http_proxy environment variable to be read is lower case only
    • the no_proxy environment variable can be set to exclude hosts from using an environment set proxy
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