opendht

• dependencies: http-parser has been replaced by llhttp (optional, used for the proxy)
• dht: add support to behave as a client node. A client node doesn't participate in routing or storing data but can perform queries to other nodes. This can be useful when running short-lived nodes.
• dht: use poll instead of select
• peer discovery: ping network after connectivity change (@AmnaSnene )
• peer discovery: add retry mechanism with exponential back-off (@AmnaSnene )
• peer discovery: add workaround for Android (@Lanius-collaris )
• http: allow to modify keepalive option
• http: adjusted keepalive settings
• crypto: fix error when using empty password (@qiek )
• crypto: improve error handling and messages (@lucassdiass )
• build: add support to build with io_uring (used by asio)
• fix various warnings (@Noviv )

• dht: fixed issue that could cause a listen operation after a previous cancelListen on the same key to not provide values in some cases
• proxy client: fixed issue that could cause a listen socket to remain open after cancellation
• proxy server: add value IDs to be used by iOS extension ( @atraczyk )
• build/meson: add support to build unit tests
• build/meson: add support to configure and install pkgconfig files for OpenDHT libraries
• build/meson: fix various build issues
• build/autotools: avoid using bash extension in configure.ac ( @jg1uaa )

• build/meson: support building the Python binding
• build/meson: support building with indexation
• build/meson: support building with push notifications
• ci: various fixes

• dht_proxy_server: Allow user to specify non-standard ports in UnifiedPush endpoint ( @Lanius-collaris )
• ocsp: removed custom ASN1_time_parse implementation
• resolver: allow to cancel request
• dhtrunner: run shutdown operation immediately
• crypto: work around a bug in GnuTLS 3.8.4 that might lead to crashes when using PrivateKey::decrypt.
• build: CMake 3.16 is now the minimum required version

• aesEncrypt: allow to provide salt
• build/meson: allow to build c binding

• dht: allow to configure the PRNG used instead of always seeding it from random_device. This allows for better reproducibility of the DHT behaviour for testing.
• rng: added getDerivedRandomEngine to seed a new PRNG from an existing one.
• rng: improve getSeededRandomEngine.
• rng: drop custom random_device implementation for MinGW/Windows, because MinGW now has working std::random_device support on Windows. dht::crypto::random_device is no longer defined. Use std::random_device.

• crypto: add aesBuildEncrypted

• crypto: added aesGetKey, aesGetSalt, aesGetEncrypted, giving more control over encrypted blobs generated by aesEncrypt(data, password).
• python: added bindings for aesEncrypt, aesDecrypt
• build/cmake: link libatomic where needed for 64-bit atomic ops ( @bandali0 )

• python: Added putSigned and putEncrypted to DhtRunner

This release focus on improving the Python binding:

• python: Added missing permanent boolean argument to DhtRunner.put()
• python: Added missing cancelPut method to DhtRunner
• python: Added missing configuration fields in DhtRunnerConfig, allowing to use features like the proxy server, peer discovery, and configure specific bound address, allowing to bind to a specific network interface.
• python: Added SockAddr.resolve(hostname, service) to allow building SockAddr instances from a string representation of an IP address or hostname, and port or service name:

  > import opendht as dht
  > dht.SockAddr.resolve("bootstrap.jami.net", "4222")
  [<SockAddr '198.27.69.48:4222'>]
  

• proxy client: retry permanent put after reconnect

• Fix Python binding with latest Cython version

• dht: added early announce/listen mechanism, significantly reducing the time taken for the first values to be published or received for a new search, without major trade-off.
• dht: fixed an issue that was causing invalid transaction IDs to be occasionally used
• dht: changed user agent to "o2"
• dhtinterface: added setOnPublicAddressChanged to listen for public address changes
• dhtrunner: added Context::publicAddressChangedCb to make use of the new API
• log: new logger API using {fmt}
• http: added static method Request::url_encode to encode url parameters.
• docker: Alpine image now based on Alpine 3.18
• build/meson: build dhtchat, dhtscanner

• dht: improved transmission of large amounts of values (>64 KB) for a single key, by transmitting them in separate messages with independent retransmission logic
• docker: added official Alpine Linux-based images, much lighter than Ubuntu-based images (about 30 MB vs 800 MB)
• build/cmake: removed OPENDHT_STATIC and OPENDHT_SHARED options. Use the standard BUILD_SHARED_LIBS option instead
• build/cmake: removed OPENDHT_TESTS option. Use the standard BUILD_TESTING option instead
• build/cmake: now using CTest
• build/meson: added experimental support for the Meson build system
• build/autotools: the Autotools build system is now deprecated and shall be removed when Meson support is considered stable

• Added soversion for c binding shared library

• proxy server: added support for Unified Push in addition to gorush
• proxy server: various fixes
• securedht: fixed a long-standing issue that prevented editing a signed value. Added relevant unit test.
• rust: updated os_socketaddr
• infohash: added to_view()
• build/cmake: using IMPORTED_TARGET for pkg-config
• build/cmake: declare appropriate pkg-config dependencies

• dhtrunner: fix crash introduced in 2.4.8 when requesting both local peer discovery and the proxy client
  The peer discovery configuration is now ignored when using the proxy client
• proxy server: allow to configure the local address to bind
• misc: fix various warnings