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/proc/thread-self/root/opt/alt/ruby18/share/ri/1.8/system/UDPSocket/recvfrom_nonblock-i.yaml

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--- !ruby/object:RI::MethodDescription 
aliases: []

block_params: 
comment: 
- !ruby/struct:SM::Flow::P 
 body: Receives up to maxlen bytes from <tt>udpsocket</tt> using recvfrom(2) after O_NONBLOCK is set for the underlying file descriptor. flags is zero or more of the <tt>MSG_</tt> options. The first element of the results, mesg, is the data received. The second element, sender_inet_addr, is an array to represent the sender address.
- !ruby/struct:SM::Flow::P 
 body: When recvfrom(2) returns 0, Socket#recvfrom_nonblock returns an empty string as data. It means an empty packet.
- !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: " require 'socket'\n s1 = UDPSocket.new\n s1.bind(&quot;127.0.0.1&quot;, 0)\n s2 = UDPSocket.new\n s2.bind(&quot;127.0.0.1&quot;, 0)\n s2.connect(*s1.addr.values_at(3,1))\n s1.connect(*s2.addr.values_at(3,1))\n s1.send &quot;aaa&quot;, 0\n IO.select([s2])\n p s2.recvfrom_nonblock(10) #=&gt; [&quot;aaa&quot;, [&quot;AF_INET&quot;, 33302, &quot;localhost.localdomain&quot;, &quot;127.0.0.1&quot;]]\n"
- !ruby/struct:SM::Flow::P 
 body: Refer to Socket#recvfrom for the exceptions that may be thrown if the call to recvfrom_nonblock fails.
- !ruby/struct:SM::Flow::P 
 body: UDPSocket#recvfrom_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: UDPSocket#recvfrom_nonblock
is_singleton: false
name: recvfrom_nonblock
params: |
 udpsocket.recvfrom_nonblock(maxlen) => [mesg, sender_inet_addr]
 udpsocket.recvfrom_nonblock(maxlen, flags) => [mesg, sender_inet_addr]

visibility: public

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Name	Size	Perms	Modified	Actions
bind-i.yaml	175 B	lrw-r--r--	2023-07-26 13:47:05	Edit Download recursive recursive
cdesc-UDPSocket.yaml	1.80 KB	lrw-r--r--	2023-07-26 13:47:05	Edit Download recursive recursive
connect-i.yaml	181 B	lrw-r--r--	2023-07-26 13:47:05	Edit Download recursive recursive
recvfrom_nonblock-i.yaml	2.19 KB	lrw-r--r--	2023-07-26 13:47:05	Edit Download recursive recursive
send-i.yaml	183 B	lrw-r--r--	2023-07-26 13:47:05	Edit Download recursive recursive

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