1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
|
require 'spec_helper'
describe TCPSocket do
port_offset = 0
let(:tcp_port) { 12345 + (port_offset += 1) }
let :readable_subject do
server = TCPServer.new("localhost", tcp_port)
sock = TCPSocket.open("localhost", tcp_port)
peer = server.accept
peer << "data"
sock
end
let :unreadable_subject do
TCPServer.new("localhost", tcp_port)
sock = TCPSocket.new("localhost", tcp_port)
# Sanity check to make sure we actually produced an unreadable socket
if select([sock], [], [], 0)
pending "Failed to produce an unreadable socket"
end
sock
end
let :writable_subject do
TCPServer.new("localhost", tcp_port)
TCPSocket.new("localhost", tcp_port)
end
let :unwritable_subject do
server = TCPServer.new("localhost", tcp_port)
sock = TCPSocket.open("localhost", tcp_port)
peer = server.accept
begin
sock.write_nonblock "X" * 1024
_, writers = select [], [sock], [], 0
end while writers and writers.include? sock
# I think the kernel might manage to drain its buffer a bit even after
# the socket first goes unwritable. Attempt to sleep past this and then
# attempt to write again
sleep 0.1
# Once more for good measure!
begin
sock.write_nonblock "X" * 1024
rescue Errno::EWOULDBLOCK
end
# Sanity check to make sure we actually produced an unwritable socket
if select([], [sock], [], 0)
pending "Failed to produce an unwritable socket"
end
sock
end
let :pair do
server = TCPServer.new("localhost", tcp_port)
client = TCPSocket.open("localhost", tcp_port)
[client, server.accept]
end
it_behaves_like "an NIO selectable"
it_behaves_like "an NIO selectable stream"
it_behaves_like "an NIO bidirectional stream"
context :connect do
it "selects writable when connected" do
selector = NIO::Selector.new
server = TCPServer.new('127.0.0.1', tcp_port)
client = Socket.new(Socket::AF_INET, Socket::SOCK_STREAM, 0)
monitor = selector.register(client, :w)
expect do
client.connect_nonblock Socket.sockaddr_in(tcp_port, '127.0.0.1')
end.to raise_exception Errno::EINPROGRESS
selector.select(0).should include monitor
result = client.getsockopt(::Socket::SOL_SOCKET, ::Socket::SO_ERROR)
result.unpack('i').first.should be_zero
end
end
end
|
