Current File : //opt/alt/ruby18/share/ri/1.8/system/BasicSocket/recv_nonblock-i.yaml
--- !ruby/object:RI::MethodDescription
aliases: []
block_params:
comment:
- !ruby/struct:SM::Flow::P
body: Receives up to <em>maxlen</em> bytes from <tt>socket</tt> using recvfrom(2) after O_NONBLOCK is set for the underlying file descriptor. <em>flags</em> is zero or more of the <tt>MSG_</tt> options. The result, <em>mesg</em>, is the data received.
- !ruby/struct:SM::Flow::P
body: "When recvfrom(2) returns 0, Socket#recv_nonblock returns an empty string as data. The meaning depends on the socket: EOF on TCP, empty packet on UDP, etc."
- !ruby/struct:SM::Flow::H
level: 3
text: Parameters
- !ruby/object:SM::Flow::LIST
contents:
- !ruby/struct:SM::Flow::LI
label: "*"
body: <tt>maxlen</tt> - the number of bytes to receive from the socket
- !ruby/struct:SM::Flow::LI
label: "*"
body: <tt>flags</tt> - zero or more of the <tt>MSG_</tt> options
type: :BULLET
- !ruby/struct:SM::Flow::H
level: 3
text: Example
- !ruby/struct:SM::Flow::VERB
body: " serv = TCPServer.new("127.0.0.1", 0)\n af, port, host, addr = serv.addr\n c = TCPSocket.new(addr, port)\n s = serv.accept\n c.send "aaa", 0\n IO.select([s])\n p s.recv_nonblock(10) #=> "aaa"\n"
- !ruby/struct:SM::Flow::P
body: Refer to Socket#recvfrom for the exceptions that may be thrown if the call to <em>recv_nonblock</em> fails.
- !ruby/struct:SM::Flow::P
body: BasicSocket#recv_nonblock may raise any error corresponding to recvfrom(2) failure, including Errno::EAGAIN.
- !ruby/struct:SM::Flow::H
level: 3
text: See
- !ruby/object:SM::Flow::LIST
contents:
- !ruby/struct:SM::Flow::LI
label: "*"
body: Socket#recvfrom
type: :BULLET
full_name: BasicSocket#recv_nonblock
is_singleton: false
name: recv_nonblock
params: |
basicsocket.recv_nonblock(maxlen) => mesg
basicsocket.recv_nonblock(maxlen, flags) => mesg
visibility: public
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