U:RDoc::AnyMethod[iI"recvfrom_nonblock:EFI"Socket#recvfrom_nonblock;TF:publico:RDoc::Markup::Document:@parts[o:RDoc::Markup::Paragraph;	[I"IReceives up to _maxlen_ bytes from +socket+ using recvfrom(2) after ;TI";O_NONBLOCK is set for the underlying file descriptor. ;TI"4_flags_ is zero or more of the +MSG_+ options. ;TI"EThe first element of the results, _mesg_, is the data received. ;TI"OThe second element, _sender_addrinfo_, contains protocol-specific address ;TI"information of the sender.;To:RDoc::Markup::BlankLineo;
;	[I"BWhen recvfrom(2) returns 0, Socket#recvfrom_nonblock returns ;TI"an empty string as data. ;TI"MThe meaning depends on the socket: EOF on TCP, empty packet on UDP, etc.;T@S:RDoc::Markup::Heading:
leveli:	textI"Parameters;To:RDoc::Markup::List:
@type:BULLET:@items[	o:RDoc::Markup::ListItem:@label0;	[o;
;	[I"F+maxlen+ - the maximum number of bytes to receive from the socket;To;;0;	[o;
;	[I"1+flags+ - zero or more of the +MSG_+ options;To;;0;	[o;
;	[I")+outbuf+ - destination String buffer;To;;0;	[o;
;	[I"9+opts+ - keyword hash, supporting `exception: false`;T@S;;
i;I"Example;To:RDoc::Markup::Verbatim;	[ I"%# In one file, start this first
;TI"require 'socket'
;TI"include Socket::Constants
;TI"2socket = Socket.new(AF_INET, SOCK_STREAM, 0)
;TI"6sockaddr = Socket.sockaddr_in(2200, 'localhost')
;TI"socket.bind(sockaddr)
;TI"socket.listen(5)
;TI"-client, client_addrinfo = socket.accept
;TI"'begin # emulate blocking recvfrom
;TI"+  pair = client.recvfrom_nonblock(20)
;TI"rescue IO::WaitReadable
;TI"  IO.select([client])
;TI"
  retry
;TI"	end
;TI"data = pair[0].chomp
;TI"/puts "I only received 20 bytes '#{data}'"
;TI"
sleep 1
;TI"socket.close
;TI"
;TI"*# In another file, start this second
;TI"require 'socket'
;TI"include Socket::Constants
;TI"2socket = Socket.new(AF_INET, SOCK_STREAM, 0)
;TI"6sockaddr = Socket.sockaddr_in(2200, 'localhost')
;TI"socket.connect(sockaddr)
;TI"-socket.puts "Watch this get cut short!"
;TI"socket.close
;T:@format0o;
;	[I"PRefer to Socket#recvfrom for the exceptions that may be thrown if the call ;TI""to _recvfrom_nonblock_ fails.;T@o;
;	[I"XSocket#recvfrom_nonblock may raise any error corresponding to recvfrom(2) failure, ;TI""including Errno::EWOULDBLOCK.;T@o;
;	[	I">If the exception is Errno::EWOULDBLOCK or Errno::EAGAIN, ;TI")it is extended by IO::WaitReadable. ;TI"KSo IO::WaitReadable can be used to rescue the exceptions for retrying ;TI"recvfrom_nonblock.;T@o;
;	[I"OBy specifying a keyword argument _exception_ to +false+, you can indicate ;TI"Pthat recvfrom_nonblock should not raise an IO::WaitReadable exception, but ;TI"0return the symbol +:wait_readable+ instead.;T@S;;
i;I"See;To;;;;[o;;0;	[o;
;	[I"Socket#recvfrom;T:
@fileI"ext/socket/lib/socket.rb;T:0@omit_headings_from_table_of_contents_below0I"\socket.recvfrom_nonblock(maxlen[, flags[, outbuf[, opts]]]) => [mesg, sender_addrinfo]
;T0[I"0(len, flag = 0, str = nil, exception: true);T@lFI"Socket;TcRDoc::NormalClass00