Gestionnaire de fichiers - Editer - /opt/cpanel/ea-ruby24/root/usr/share/ri/system/Socket/recvfrom_nonblock-i.ri
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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::BlankLine o; ; [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
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