Class: Async::IO::Socket

Inherits:
BasicSocket show all
Includes:
ServerSocket, Socket::Constants
Defined in:
lib/async/io/socket.rb

Constant Summary

Constants inherited from Generic

Generic::WRAPPERS

Class Method Summary collapse

Instance Method Summary collapse

Methods included from ServerSocket

#accept, #accept_each

Methods inherited from Generic

#read, wrap, wrap_blocking_method, wraps, #write

Class Method Details

.accept(*args, backlog: SOMAXCONN, &block) ⇒ Object

Bind to a local address and accept connections in a loop.



163
164
165
166
167
168
169
 
# File 'lib/async/io/socket.rb', line 163

def self.accept(*args, backlog: SOMAXCONN, &block)
	bind(*args) do |server, task|
		server.listen(backlog) if backlog
		
		server.accept_each(task: task, &block)
	end
end

.bind(local_address, protocol: 0, reuse_port: false, task: Task.current, &block) ⇒ Object

Bind to a local address.

Examples:

socket = Async::IO::Socket.bind(Async::IO::Address.tcp("0.0.0.0", 9090))

Parameters:

  • local_address (Address) —

    The local address to bind to.

  • protocol (Hash) (defaults to: 0) —

    a customizable set of options

  • reuse_port (Hash) (defaults to: false) —

    a customizable set of options

Options Hash (protocol:):

  • The (Integer) —

    socket protocol to use.

Options Hash (reuse_port:):

  • Allow (Boolean) —

    this port to be bound in multiple processes.



142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
 
# File 'lib/async/io/socket.rb', line 142

def self.bind(local_address, protocol: 0, reuse_port: false, task: Task.current, &block)
	task.annotate "binding to #{local_address.inspect}"
	
	wrapper = build(local_address.afamily, local_address.socktype, protocol) do |socket|
		socket.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_REUSEADDR, true)
		socket.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_REUSEPORT, true) if reuse_port
		socket.bind(local_address.to_sockaddr)
	end
	
	if block_given?
		begin
			yield wrapper, task
		ensure
			wrapper.close
		end
	else
		return wrapper
	end
end

.build(*args, task: Task.current) ⇒ Object 



87
88
89
90
91
92
93
94
95
96
97
 
# File 'lib/async/io/socket.rb', line 87

def self.build(*args, task: Task.current)
	socket = ::Socket.new(*args)
	
	yield socket
	
	return self.new(socket, task.reactor)
rescue Exception
	socket.close if socket
	
	raise
end

.connect(remote_address, local_address = nil, protocol: 0, task: Task.current) ⇒ Object

Establish a connection to a given ‘remote_address`.

Examples:

socket = Async::IO::Socket.connect(Async::IO::Address.tcp("8.8.8.8", 53))

Parameters:

  • remote_address (Addrinfo) —

    The remote address to connect to.

  • local_address (Addrinfo) (defaults to: nil) —

    The local address to bind to before connecting.

  • protcol (Hash) —

    a customizable set of options



105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
 
# File 'lib/async/io/socket.rb', line 105

def self.connect(remote_address, local_address = nil, protocol: 0, task: Task.current)
	task.annotate "connecting to #{remote_address.inspect}"
	
	wrapper = build(remote_address.afamily, remote_address.socktype, protocol) do |socket|
		if local_address
			socket.setsockopt(::Socket::SOL_SOCKET, ::Socket::SO_REUSEADDR, true)
			socket.bind(local_address.to_sockaddr) if local_address
		end
		
		self.new(socket, task.reactor)
	end
	
	begin
		wrapper.connect(remote_address.to_sockaddr)
		task.annotate "connected to #{remote_address.inspect}"
	rescue
		wrapper.close
		raise
	end
	
	if block_given?
		begin
			yield wrapper, task
		ensure
			wrapper.close
		end
	else
		return wrapper
	end
end

Instance Method Details

#connect(*args) ⇒ Object 



79
80
81
82
83
84
85
 
# File 'lib/async/io/socket.rb', line 79

def connect(*args)
	begin
		async_send(:connect_nonblock, *args)
	rescue Errno::EISCONN
		# We are now connected.
	end
end