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
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
require "./spec_helper"
require "socket"
describe UDPSocket, tags: "network" do
# Note: This spec fails with a IPv6 address. See pending below.
it "#remote_address resets after connect" do
socket = UDPSocket.new
socket.connect("127.0.0.1", 1)
socket.remote_address.port.should eq 1
socket.connect("127.0.0.1", 2)
socket.remote_address.port.should eq 2
socket.close
end
pending "#connect with a IPv6 address" do
socket = UDPSocket.new
socket.connect("::1", 1)
socket.close
end
each_ip_family do |family, address, unspecified_address|
it "#bind" do
port = unused_local_port
socket = UDPSocket.new(family)
socket.bind(address, port)
socket.local_address.should eq(Socket::IPAddress.new(address, port))
socket.close
socket = UDPSocket.new(family)
socket.bind(address, 0)
socket.local_address.address.should eq address
end
it "sends and receives messages" do
port = unused_local_port
server = UDPSocket.new(family)
server.bind(address, port)
server.local_address.should eq(Socket::IPAddress.new(address, port))
client = UDPSocket.new(family)
client.bind(address, 0)
client.send "message", to: server.local_address
server.receive.should eq({"message", client.local_address})
client.connect(address, port)
client.local_address.family.should eq(family)
client.local_address.address.should eq(address)
client.remote_address.should eq(Socket::IPAddress.new(address, port))
client.send "message"
server.receive.should eq({"message", client.local_address})
client.send("laus deo semper")
buffer = uninitialized UInt8[256]
bytes_read, client_addr = server.receive(buffer.to_slice)
message = String.new(buffer.to_slice[0, bytes_read])
message.should eq("laus deo semper")
client.send("laus deo semper")
# WSA errors with WSAEMSGSIZE if the buffer is not large enough to receive the message
{% unless flag?(:win32) %}
bytes_read, client_addr = server.receive(buffer.to_slice[0, 4])
message = String.new(buffer.to_slice[0, bytes_read])
message.should eq("laus")
{% end %}
client.close
server.close
end
if {{ flag?(:darwin) }} && family == Socket::Family::INET6
# Darwin is failing to join IPv6 multicast groups on older versions.
# However this is known to work on macOS Mojave with Darwin 18.2.0.
# Darwin also has a bug that prevents selecting the "default" interface.
# https://lists.apple.com/archives/darwin-kernel/2014/Mar/msg00012.html
pending "joins and transmits to multicast groups"
elsif {{ flag?(:solaris) }} && family == Socket::Family::INET
# TODO: figure out why updating `multicast_loopback` produces a
# `setsockopt 18: Invalid argument` error
pending "joins and transmits to multicast groups"
else
pending "joins and transmits to multicast groups" do
udp = UDPSocket.new(family)
port = unused_local_port
udp.bind(unspecified_address, port)
udp.multicast_loopback = false
udp.multicast_loopback?.should eq(false)
udp.multicast_hops = 4
udp.multicast_hops.should eq(4)
udp.multicast_hops = 0
udp.multicast_hops.should eq(0)
addr = case family
when Socket::Family::INET
expect_raises(Socket::Error, "Unsupported IP address family: INET. For use with IPv6 only") do
udp.multicast_interface 0
end
begin
udp.multicast_interface Socket::IPAddress.new(unspecified_address, 0)
rescue e : Socket::Error
if e.os_error == Errno::ENOPROTOOPT
pending!("Multicast device selection not available on this host")
else
raise e
end
end
Socket::IPAddress.new("224.0.0.254", port)
when Socket::Family::INET6
expect_raises(Socket::Error, "Unsupported IP address family: INET6. For use with IPv4 only") do
udp.multicast_interface(Socket::IPAddress.new(unspecified_address, 0))
end
begin
udp.multicast_interface(0)
rescue e : Socket::Error
if e.os_error == Errno::ENOPROTOOPT
pending!("Multicast device selection not available on this host")
else
raise e
end
end
Socket::IPAddress.new("ff02::102", port)
else
raise "Unsupported IP address family: #{family}"
end
begin
udp.join_group(addr)
rescue e : Socket::Error
if e.os_error == Errno::ENODEV
pending!("Multicast device selection not available on this host")
else
raise e
end
end
udp.multicast_loopback = true
udp.multicast_loopback?.should eq(true)
udp.send("testing", addr)
udp.read_timeout = 1.second
begin
udp.receive[0].should eq("testing")
rescue IO::TimeoutError
# Since this test doesn't run over the loopback interface, this test
# fails when there is a firewall in use. Don't fail in that case.
end
udp.leave_group(addr)
udp.send("testing", addr)
# Test that nothing was received after leaving the multicast group
spawn do
sleep 100.milliseconds
udp.close
end
expect_raises(IO::Error) { udp.receive }
udp.closed?.should be_true
end
end
end
{% if flag?(:linux) || flag?(:win32) %}
it "sends broadcast message" do
port = unused_local_port
client = UDPSocket.new(Socket::Family::INET)
client.bind("localhost", 0)
client.broadcast = true
client.broadcast?.should be_true
client.connect("255.255.255.255", port)
client.send("broadcast").should eq(9)
client.close
end
{% else %}
pending "sends broadcast message"
{% end %}
end
|
