static VALUE
bsock_recv_nonblock(int argc, VALUE *argv, VALUE sock)
{
UNRUBBY_SOCKET_HACK;
return rsock_s_recvfrom_nonblock(sock, argc, argv, RECV_RECV);
}
/* :nodoc: */
static VALUE
bsock_recv_nonblock(VALUE sock, VALUE len, VALUE flg, VALUE str, VALUE ex)
{
return rsock_s_recvfrom_nonblock(sock, len, flg, str, ex, RECV_RECV);
}
static VALUE
bsock_recv_nonblock(int argc, VALUE *argv, VALUE sock)
{
return rsock_s_recvfrom_nonblock(sock, argc, argv, RECV_RECV);
}
/*
* call-seq:
* udpsocket.recvfrom_nonblock(maxlen) => [mesg, sender_inet_addr]
* udpsocket.recvfrom_nonblock(maxlen, flags) => [mesg, sender_inet_addr]
*
* Receives up to _maxlen_ bytes from +udpsocket+ using recvfrom(2) after
* O_NONBLOCK is set for the underlying file descriptor.
* If _maxlen_ is omitted, its default value is 65536.
* _flags_ is zero or more of the +MSG_+ 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.
*
* When recvfrom(2) returns 0,
* Socket#recvfrom_nonblock returns an empty string as data.
* It means an empty packet.
*
* === Parameters
* * +maxlen+ - the number of bytes to receive from the socket
* * +flags+ - zero or more of the +MSG_+ options
*
* === Example
* require 'socket'
* s1 = UDPSocket.new
* s1.bind("127.0.0.1", 0)
* s2 = UDPSocket.new
* s2.bind("127.0.0.1", 0)
* s2.connect(*s1.addr.values_at(3,1))
* s1.connect(*s2.addr.values_at(3,1))
* s1.send "aaa", 0
* begin # emulate blocking recvfrom
* p s2.recvfrom_nonblock(10) #=> ["aaa", ["AF_INET", 33302, "localhost.localdomain", "127.0.0.1"]]
* rescue IO::WaitReadable
* IO.select([s2])
* retry
* end
*
* Refer to Socket#recvfrom for the exceptions that may be thrown if the call
* to _recvfrom_nonblock_ fails.
*
* UDPSocket#recvfrom_nonblock may raise any error corresponding to recvfrom(2) failure,
* including Errno::EWOULDBLOCK.
*
* If the exception is Errno::EWOULDBLOCK or Errno::AGAIN,
* it is extended by IO::WaitReadable.
* So IO::WaitReadable can be used to rescue the exceptions for retrying recvfrom_nonblock.
*
* === See
* * Socket#recvfrom
*/
static VALUE
udp_recvfrom_nonblock(int argc, VALUE *argv, VALUE sock)
{
return rsock_s_recvfrom_nonblock(sock, argc, argv, RECV_IP);
}
