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describe :socket_recv_nonblock, shared: true do
before :each do
@s1 = Socket.new(Socket::AF_INET, Socket::SOCK_DGRAM, 0)
@s2 = Socket.new(Socket::AF_INET, Socket::SOCK_DGRAM, 0)
end
after :each do
@s1.close unless @s1.closed?
@s2.close unless @s2.closed?
end
it "raises an exception extending IO::WaitReadable if there's no data available" do
@s1.bind(Socket.pack_sockaddr_in(0, "127.0.0.1"))
lambda {
@s1.recv_nonblock(5)
}.should raise_error(IO::WaitReadable) { |e|
platform_is_not :windows do
e.should be_kind_of(Errno::EAGAIN)
end
platform_is :windows do
e.should be_kind_of(Errno::EWOULDBLOCK)
end
}
end
it "receives data after it's ready" do
@s1.bind(Socket.pack_sockaddr_in(0, "127.0.0.1"))
@s2.send("aaa", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
@s1.recv_nonblock(5).should == "aaa"
end
it "allows an output buffer as third argument" do
@s1.bind(Socket.pack_sockaddr_in(0, "127.0.0.1"))
@s2.send("data", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
buf = "foo"
@s1.recv_nonblock(5, 0, buf)
buf.should == "data"
end
it "does not block if there's no data available" do
@s1.bind(Socket.pack_sockaddr_in(0, "127.0.0.1"))
@s2.send("a", 0, @s1.getsockname)
IO.select([@s1], nil, nil, 2)
@s1.recv_nonblock(1).should == "a"
lambda {
@s1.recv_nonblock(5)
}.should raise_error(IO::WaitReadable)
end
end
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