Class: Takagi::Server::Tcp

Inherits:
Object
  • Object
show all
Defined in:
lib/takagi/server/tcp.rb

Overview

TCP server implementation for CoAP over TCP

Instance Method Summary collapse

Constructor Details

#initialize(port: 5683, worker_threads: 2, middleware_stack: nil, router: nil, logger: nil, watcher: nil, sender: nil) ⇒ Tcp

Returns a new instance of Tcp.



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# File 'lib/takagi/server/tcp.rb', line 10

def initialize(port: 5683, worker_threads: 2,
               middleware_stack: nil, router: nil, logger: nil, watcher: nil, sender: nil)
  @port = port
  @worker_threads = worker_threads
  @middleware_stack = middleware_stack || Takagi::MiddlewareStack.instance
  @router = router || Takagi::Router.instance
  @logger = logger || Takagi.logger
  @watcher = watcher || Takagi::Observer::Watcher.new(interval: 1)

  Initializer.run!

  @server = TCPServer.new('0.0.0.0', @port)
  @sender = sender || Takagi::Network::TcpSender.instance
end

Instance Method Details

#run! ⇒ Object 



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# File 'lib/takagi/server/tcp.rb', line 25

def run!
  Takagi::Hooks.emit(:server_starting, protocol: :tcp, port: @port)
  @logger.info "Starting Takagi TCP server on port #{@port}"
  @workers = []
  @watcher.start

  # Set flag instead of calling shutdown! directly from trap context
  # This avoids "can't be called from trap context" errors with logger
  trap('INT') { @shutdown_requested = true }

  loop do
    break if @shutdown_called || @shutdown_requested

    begin
      @logger.debug "Waiting for client connection..."
      client = @server.accept
      @logger.debug "Client connected from #{client.peeraddr.inspect}"
    rescue IOError, SystemCallError => e
      @logger.error "TCP server accept failed: #{e.class}: #{e.message}"
      @logger.debug "TCP server accept loop exiting: #{e.message}" if @shutdown_called
      break
    end

    @logger.debug "Spawning handler thread for client"
    Thread.new(client) do |sock|
      begin
        handle_connection(sock)
      rescue => e
        @logger.error "Handler thread crashed: #{e.class}: #{e.message}"
        @logger.debug e.backtrace.join("\n")
      end
    end
  end

  # Call shutdown if it was requested by signal
  shutdown! if @shutdown_requested

  @logger.info "TCP server stopped"
  Takagi::Hooks.emit(:server_stopped, protocol: :tcp, port: @port)
end

#shutdown! ⇒ Object 



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# File 'lib/takagi/server/tcp.rb', line 66

def shutdown!
  return if @shutdown_called

  @shutdown_called = true
  @watcher.stop
  @server.close if @server && !@server.closed?

  # Join the server thread if it was spawned
  if defined?(@server_thread) && @server_thread&.alive?
    @server_thread.join(5) # Wait up to 5 seconds
  end
end