Method: TCPServer#accept_nonblock

Defined in:
lib/socket.rb

#accept_nonblock(exception: true) ⇒ Object

call-seq:

tcpserver.accept_nonblock([options]) => tcpsocket

Accepts an incoming connection using accept(2) after O_NONBLOCK is set for the underlying file descriptor. It returns an accepted TCPSocket for the incoming connection.

Example

require ‘socket’ serv = TCPServer.new(2202) begin # emulate blocking accept sock = serv.accept_nonblock rescue IO::WaitReadable, Errno::EINTR IO.select() retry end # sock is an accepted socket.

Refer to Socket#accept for the exceptions that may be thrown if the call to TCPServer#accept_nonblock fails.

TCPServer#accept_nonblock may raise any error corresponding to accept(2) failure, including Errno::EWOULDBLOCK.

If the exception is Errno::EWOULDBLOCK, Errno::EAGAIN, Errno::ECONNABORTED, Errno::EPROTO, it is extended by IO::WaitReadable. So IO::WaitReadable can be used to rescue the exceptions for retrying accept_nonblock.

By specifying a keyword argument exception to false, you can indicate that accept_nonblock should not raise an IO::WaitReadable exception, but return the symbol :wait_readable instead.

See

  • TCPServer#accept

  • Socket#accept

[View source]

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# File 'lib/socket.rb', line 1313

def accept_nonblock(exception: true)
  __accept_nonblock(exception)
end