v2.1.0

• Introduced compression feature support. Here are new methods and options to manage this feature:
  • gen.Process:
    • SetCompression(enable bool), Compression() bool
    • SetCompressionLevel(level int), CompressionLevel() int
    • SetCompressionThreshold(threshold int), CompressionThreshold() int messages smaller than the threshold will be sent with no compression. The default compression threshold is 1024 bytes.
  • node.Options:
    • Compression these settings are used as defaults for the spawning processes
  • this feature will be ignored if the receiver is running on either the Erlang or Elixir node
• Introduced proxy feature support with end-to-end encryption.
  • node.Node new methods:
    • AddProxyRoute(...), RemoveProxyRoute(...)
    • ProxyRoute(...), ProxyRoutes()
    • NodesIndirect() returns list of connected nodes via proxy connection
  • node.Options:
    • Proxy for configuring proxy settings
  • includes support (over the proxy connection): compression, fragmentation, link/monitor process, monitor node
  • example examples/proxy.
  • this feature is not available for the Erlang/Elixir nodes
• Introduced behavior gen.Raft. It's improved implementation of Raft consensus algorithm. The key improvement is using quorum under the hood to manage the leader election process and make the Raft cluster more reliable. This implementation supports quorums of 3, 5, 7, 9, or 11 quorum members. Here is an example of this feature examples/raft.
• Introduced interfaces to customize network layer
  • Resolver to replace EPMD routines with your solution (e.g., ZooKeeper or any other service registrar)
  • Handshake allows customizing authorization/authentication process
  • Proto provides the way to implement proprietary protocols (e.g., for IoT area)
• Other new features:
  • gen.Process new methods:
    • NodeUptime(), NodeName(), NodeStop()
  • gen.ServerProcess new method:
    • MessageCounter() shows how many messages have been handled by the gen.Server callbacks
  • gen.ProcessOptions new option:
    • ProcessFallback allows forward messages to the fallback process if the process mailbox is full. Forwarded messages are wrapped into gen.MessageFallback struct. Related to issue #96.
  • gen.SupervisorChildSpec and gen.ApplicationChildSpec got option gen.ProcessOptions to customize options for the spawning child processes.
• Improved sending messages by etf.Pid or etf.Alias: methods gen.Process.Send, gen.ServerProcess.Cast, gen.ServerProcess.Call now return node.ErrProcessIncarnation if a message is sending to the remote process of the previous incarnation (remote node has been restarted).
• Introduced type gen.EnvKey for the environment variables
• All spawned processes now have the node.EnvKeyNode variable to get access to the node.Node value.
• Improved performance of local messaging (up to 8 times for some cases)
• Important node.Options has changed. Make sure to adjust your code.
• Fixed issue #89 (incorrect handling of Call requests)
• Fixed issues #87, #88 and #93 (closing network socket)
• Fixed issue #96 (silently drops message if process mailbox is full)
• Updated minimal requirement of Golang version to 1.17 (go.mod)
• We still keep the rule Zero Dependencies