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[official-gcc.git] / libgo / go / net / unicast_posix_test.go
blob5deb8f47c6c2de5422b6fed5f24c765aa3fb1040
1 // Copyright 2011 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
4
5 // +build !plan9
6
7 package net
8
9 import (
10 "runtime"
11 "syscall"
12 "testing"
13 )
14
15 var listenerTests = []struct {
16 net string
17 laddr string
18 ipv6 bool // test with underlying AF_INET6 socket
19 wildcard bool // test with wildcard address
20 }{
21 {net: "tcp", laddr: "", wildcard: true},
22 {net: "tcp", laddr: "0.0.0.0", wildcard: true},
23 {net: "tcp", laddr: "[::ffff:0.0.0.0]", wildcard: true},
24 {net: "tcp", laddr: "[::]", ipv6: true, wildcard: true},
25
26 {net: "tcp", laddr: "127.0.0.1"},
27 {net: "tcp", laddr: "[::ffff:127.0.0.1]"},
28 {net: "tcp", laddr: "[::1]", ipv6: true},
29
30 {net: "tcp4", laddr: "", wildcard: true},
31 {net: "tcp4", laddr: "0.0.0.0", wildcard: true},
32 {net: "tcp4", laddr: "[::ffff:0.0.0.0]", wildcard: true},
33
34 {net: "tcp4", laddr: "127.0.0.1"},
35 {net: "tcp4", laddr: "[::ffff:127.0.0.1]"},
36
37 {net: "tcp6", laddr: "", ipv6: true, wildcard: true},
38 {net: "tcp6", laddr: "[::]", ipv6: true, wildcard: true},
39
40 {net: "tcp6", laddr: "[::1]", ipv6: true},
41 }
42
43 // TestTCPListener tests both single and double listen to a test
44 // listener with same address family, same listening address and
45 // same port.
46 func TestTCPListener(t *testing.T) {
47 switch runtime.GOOS {
48 case "plan9":
49 t.Skipf("skipping test on %q", runtime.GOOS)
50 }
51
52 for _, tt := range listenerTests {
53 if tt.wildcard && (testing.Short() || !*testExternal) {
54 continue
55 }
56 if tt.ipv6 && !supportsIPv6 {
57 continue
58 }
59 l1, port := usableListenPort(t, tt.net, tt.laddr)
60 checkFirstListener(t, tt.net, tt.laddr+":"+port, l1)
61 l2, err := Listen(tt.net, tt.laddr+":"+port)
62 checkSecondListener(t, tt.net, tt.laddr+":"+port, err, l2)
63 l1.Close()
64 }
65 }
66
67 // TestUDPListener tests both single and double listen to a test
68 // listener with same address family, same listening address and
69 // same port.
70 func TestUDPListener(t *testing.T) {
71 switch runtime.GOOS {
72 case "plan9":
73 t.Skipf("skipping test on %q", runtime.GOOS)
74 }
75
76 toudpnet := func(net string) string {
77 switch net {
78 case "tcp":
79 return "udp"
80 case "tcp4":
81 return "udp4"
82 case "tcp6":
83 return "udp6"
84 }
85 return "<nil>"
86 }
87
88 for _, tt := range listenerTests {
89 if tt.wildcard && (testing.Short() || !*testExternal) {
90 continue
91 }
92 if tt.ipv6 && !supportsIPv6 {
93 continue
94 }
95 tt.net = toudpnet(tt.net)
96 l1, port := usableListenPacketPort(t, tt.net, tt.laddr)
97 checkFirstListener(t, tt.net, tt.laddr+":"+port, l1)
98 l2, err := ListenPacket(tt.net, tt.laddr+":"+port)
99 checkSecondListener(t, tt.net, tt.laddr+":"+port, err, l2)
100 l1.Close()
101 }
102 }
103
104 var dualStackListenerTests = []struct {
105 net1 string // first listener
106 laddr1 string
107 net2 string // second listener
108 laddr2 string
109 wildcard bool // test with wildcard address
110 xerr error // expected error value, nil or other
111 }{
112 // Test cases and expected results for the attemping 2nd listen on the same port
113 // 1st listen 2nd listen darwin freebsd linux openbsd
114 // ------------------------------------------------------------------------------------
115 // "tcp" "" "tcp" "" - - - -
116 // "tcp" "" "tcp" "0.0.0.0" - - - -
117 // "tcp" "0.0.0.0" "tcp" "" - - - -
118 // ------------------------------------------------------------------------------------
119 // "tcp" "" "tcp" "[::]" - - - ok
120 // "tcp" "[::]" "tcp" "" - - - ok
121 // "tcp" "0.0.0.0" "tcp" "[::]" - - - ok
122 // "tcp" "[::]" "tcp" "0.0.0.0" - - - ok
123 // "tcp" "[::ffff:0.0.0.0]" "tcp" "[::]" - - - ok
124 // "tcp" "[::]" "tcp" "[::ffff:0.0.0.0]" - - - ok
125 // ------------------------------------------------------------------------------------
126 // "tcp4" "" "tcp6" "" ok ok ok ok
127 // "tcp6" "" "tcp4" "" ok ok ok ok
128 // "tcp4" "0.0.0.0" "tcp6" "[::]" ok ok ok ok
129 // "tcp6" "[::]" "tcp4" "0.0.0.0" ok ok ok ok
130 // ------------------------------------------------------------------------------------
131 // "tcp" "127.0.0.1" "tcp" "[::1]" ok ok ok ok
132 // "tcp" "[::1]" "tcp" "127.0.0.1" ok ok ok ok
133 // "tcp4" "127.0.0.1" "tcp6" "[::1]" ok ok ok ok
134 // "tcp6" "[::1]" "tcp4" "127.0.0.1" ok ok ok ok
135 //
136 // Platform default configurations:
137 // darwin, kernel version 11.3.0
138 // net.inet6.ip6.v6only=0 (overridable by sysctl or IPV6_V6ONLY option)
139 // freebsd, kernel version 8.2
140 // net.inet6.ip6.v6only=1 (overridable by sysctl or IPV6_V6ONLY option)
141 // linux, kernel version 3.0.0
142 // net.ipv6.bindv6only=0 (overridable by sysctl or IPV6_V6ONLY option)
143 // openbsd, kernel version 5.0
144 // net.inet6.ip6.v6only=1 (overriding is prohibited)
145
146 {net1: "tcp", laddr1: "", net2: "tcp", laddr2: "", wildcard: true, xerr: syscall.EADDRINUSE},
147 {net1: "tcp", laddr1: "", net2: "tcp", laddr2: "0.0.0.0", wildcard: true, xerr: syscall.EADDRINUSE},
148 {net1: "tcp", laddr1: "0.0.0.0", net2: "tcp", laddr2: "", wildcard: true, xerr: syscall.EADDRINUSE},
149
150 {net1: "tcp", laddr1: "", net2: "tcp", laddr2: "[::]", wildcard: true, xerr: syscall.EADDRINUSE},
151 {net1: "tcp", laddr1: "[::]", net2: "tcp", laddr2: "", wildcard: true, xerr: syscall.EADDRINUSE},
152 {net1: "tcp", laddr1: "0.0.0.0", net2: "tcp", laddr2: "[::]", wildcard: true, xerr: syscall.EADDRINUSE},
153 {net1: "tcp", laddr1: "[::]", net2: "tcp", laddr2: "0.0.0.0", wildcard: true, xerr: syscall.EADDRINUSE},
154 {net1: "tcp", laddr1: "[::ffff:0.0.0.0]", net2: "tcp", laddr2: "[::]", wildcard: true, xerr: syscall.EADDRINUSE},
155 {net1: "tcp", laddr1: "[::]", net2: "tcp", laddr2: "[::ffff:0.0.0.0]", wildcard: true, xerr: syscall.EADDRINUSE},
156
157 {net1: "tcp4", laddr1: "", net2: "tcp6", laddr2: "", wildcard: true},
158 {net1: "tcp6", laddr1: "", net2: "tcp4", laddr2: "", wildcard: true},
159 {net1: "tcp4", laddr1: "0.0.0.0", net2: "tcp6", laddr2: "[::]", wildcard: true},
160 {net1: "tcp6", laddr1: "[::]", net2: "tcp4", laddr2: "0.0.0.0", wildcard: true},
161
162 {net1: "tcp", laddr1: "127.0.0.1", net2: "tcp", laddr2: "[::1]"},
163 {net1: "tcp", laddr1: "[::1]", net2: "tcp", laddr2: "127.0.0.1"},
164 {net1: "tcp4", laddr1: "127.0.0.1", net2: "tcp6", laddr2: "[::1]"},
165 {net1: "tcp6", laddr1: "[::1]", net2: "tcp4", laddr2: "127.0.0.1"},
166 }
167
168 // TestDualStackTCPListener tests both single and double listen
169 // to a test listener with various address families, differnet
170 // listening address and same port.
171 func TestDualStackTCPListener(t *testing.T) {
172 switch runtime.GOOS {
173 case "plan9":
174 t.Skipf("skipping test on %q", runtime.GOOS)
175 }
176 if !supportsIPv6 {
177 t.Skip("ipv6 is not supported")
178 }
179
180 for _, tt := range dualStackListenerTests {
181 if tt.wildcard && (testing.Short() || !*testExternal) {
182 continue
183 }
184 switch runtime.GOOS {
185 case "openbsd":
186 if tt.wildcard && differentWildcardAddr(tt.laddr1, tt.laddr2) {
187 tt.xerr = nil
188 }
189 }
190 l1, port := usableListenPort(t, tt.net1, tt.laddr1)
191 laddr := tt.laddr1 + ":" + port
192 checkFirstListener(t, tt.net1, laddr, l1)
193 laddr = tt.laddr2 + ":" + port
194 l2, err := Listen(tt.net2, laddr)
195 checkDualStackSecondListener(t, tt.net2, laddr, tt.xerr, err, l2)
196 l1.Close()
197 }
198 }
199
200 // TestDualStackUDPListener tests both single and double listen
201 // to a test listener with various address families, differnet
202 // listening address and same port.
203 func TestDualStackUDPListener(t *testing.T) {
204 switch runtime.GOOS {
205 case "plan9":
206 t.Skipf("skipping test on %q", runtime.GOOS)
207 }
208 if !supportsIPv6 {
209 t.Skip("ipv6 is not supported")
210 }
211
212 toudpnet := func(net string) string {
213 switch net {
214 case "tcp":
215 return "udp"
216 case "tcp4":
217 return "udp4"
218 case "tcp6":
219 return "udp6"
220 }
221 return "<nil>"
222 }
223
224 for _, tt := range dualStackListenerTests {
225 if tt.wildcard && (testing.Short() || !*testExternal) {
226 continue
227 }
228 tt.net1 = toudpnet(tt.net1)
229 tt.net2 = toudpnet(tt.net2)
230 switch runtime.GOOS {
231 case "openbsd":
232 if tt.wildcard && differentWildcardAddr(tt.laddr1, tt.laddr2) {
233 tt.xerr = nil
234 }
235 }
236 l1, port := usableListenPacketPort(t, tt.net1, tt.laddr1)
237 laddr := tt.laddr1 + ":" + port
238 checkFirstListener(t, tt.net1, laddr, l1)
239 laddr = tt.laddr2 + ":" + port
240 l2, err := ListenPacket(tt.net2, laddr)
241 checkDualStackSecondListener(t, tt.net2, laddr, tt.xerr, err, l2)
242 l1.Close()
243 }
244 }
245
246 func usableListenPort(t *testing.T, net, laddr string) (l Listener, port string) {
247 var nladdr string
248 var err error
249 switch net {
250 default:
251 panic("usableListenPort net=" + net)
252 case "tcp", "tcp4", "tcp6":
253 l, err = Listen(net, laddr+":0")
254 if err != nil {
255 t.Fatalf("Probe Listen(%q, %q) failed: %v", net, laddr, err)
256 }
257 nladdr = l.(*TCPListener).Addr().String()
258 }
259 _, port, err = SplitHostPort(nladdr)
260 if err != nil {
261 t.Fatalf("SplitHostPort failed: %v", err)
262 }
263 return l, port
264 }
265
266 func usableListenPacketPort(t *testing.T, net, laddr string) (l PacketConn, port string) {
267 var nladdr string
268 var err error
269 switch net {
270 default:
271 panic("usableListenPacketPort net=" + net)
272 case "udp", "udp4", "udp6":
273 l, err = ListenPacket(net, laddr+":0")
274 if err != nil {
275 t.Fatalf("Probe ListenPacket(%q, %q) failed: %v", net, laddr, err)
276 }
277 nladdr = l.(*UDPConn).LocalAddr().String()
278 }
279 _, port, err = SplitHostPort(nladdr)
280 if err != nil {
281 t.Fatalf("SplitHostPort failed: %v", err)
282 }
283 return l, port
284 }
285
286 func differentWildcardAddr(i, j string) bool {
287 if (i == "" || i == "0.0.0.0" || i == "::ffff:0.0.0.0") && (j == "" || j == "0.0.0.0" || j == "::ffff:0.0.0.0") {
288 return false
289 }
290 if i == "[::]" && j == "[::]" {
291 return false
292 }
293 return true
294 }
295
296 func checkFirstListener(t *testing.T, net, laddr string, l interface{}) {
297 switch net {
298 case "tcp":
299 fd := l.(*TCPListener).fd
300 checkDualStackAddrFamily(t, net, laddr, fd)
301 case "tcp4":
302 fd := l.(*TCPListener).fd
303 if fd.family != syscall.AF_INET {
304 t.Fatalf("First Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET)
305 }
306 case "tcp6":
307 fd := l.(*TCPListener).fd
308 if fd.family != syscall.AF_INET6 {
309 t.Fatalf("First Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
310 }
311 case "udp":
312 fd := l.(*UDPConn).fd
313 checkDualStackAddrFamily(t, net, laddr, fd)
314 case "udp4":
315 fd := l.(*UDPConn).fd
316 if fd.family != syscall.AF_INET {
317 t.Fatalf("First ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET)
318 }
319 case "udp6":
320 fd := l.(*UDPConn).fd
321 if fd.family != syscall.AF_INET6 {
322 t.Fatalf("First ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
323 }
324 default:
325 t.Fatalf("Unexpected network: %q", net)
326 }
327 }
328
329 func checkSecondListener(t *testing.T, net, laddr string, err error, l interface{}) {
330 switch net {
331 case "tcp", "tcp4", "tcp6":
332 if err == nil {
333 l.(*TCPListener).Close()
334 t.Fatalf("Second Listen(%q, %q) should fail", net, laddr)
335 }
336 case "udp", "udp4", "udp6":
337 if err == nil {
338 l.(*UDPConn).Close()
339 t.Fatalf("Second ListenPacket(%q, %q) should fail", net, laddr)
340 }
341 default:
342 t.Fatalf("Unexpected network: %q", net)
343 }
344 }
345
346 func checkDualStackSecondListener(t *testing.T, net, laddr string, xerr, err error, l interface{}) {
347 switch net {
348 case "tcp", "tcp4", "tcp6":
349 if xerr == nil && err != nil || xerr != nil && err == nil {
350 t.Fatalf("Second Listen(%q, %q) returns %v, expected %v", net, laddr, err, xerr)
351 }
352 if err == nil {
353 l.(*TCPListener).Close()
354 }
355 case "udp", "udp4", "udp6":
356 if xerr == nil && err != nil || xerr != nil && err == nil {
357 t.Fatalf("Second ListenPacket(%q, %q) returns %v, expected %v", net, laddr, err, xerr)
358 }
359 if err == nil {
360 l.(*UDPConn).Close()
361 }
362 default:
363 t.Fatalf("Unexpected network: %q", net)
364 }
365 }
366
367 func checkDualStackAddrFamily(t *testing.T, net, laddr string, fd *netFD) {
368 switch a := fd.laddr.(type) {
369 case *TCPAddr:
370 // If a node under test supports both IPv6 capability
371 // and IPv6 IPv4-mapping capability, we can assume
372 // that the node listens on a wildcard address with an
373 // AF_INET6 socket.
374 if supportsIPv4map && fd.laddr.(*TCPAddr).isWildcard() {
375 if fd.family != syscall.AF_INET6 {
376 t.Fatalf("Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
377 }
378 } else {
379 if fd.family != a.family() {
380 t.Fatalf("Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, a.family())
381 }
382 }
383 case *UDPAddr:
384 // If a node under test supports both IPv6 capability
385 // and IPv6 IPv4-mapping capability, we can assume
386 // that the node listens on a wildcard address with an
387 // AF_INET6 socket.
388 if supportsIPv4map && fd.laddr.(*UDPAddr).isWildcard() {
389 if fd.family != syscall.AF_INET6 {
390 t.Fatalf("ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
391 }
392 } else {
393 if fd.family != a.family() {
394 t.Fatalf("ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, a.family())
395 }
396 }
397 default:
398 t.Fatalf("Unexpected protocol address type: %T", a)
399 }
400 }
401
402 var prohibitionaryDialArgTests = []struct {
403 net string
404 addr string
405 }{
406 {"tcp6", "127.0.0.1"},
407 {"tcp6", "[::ffff:127.0.0.1]"},
408 }
409
410 func TestProhibitionaryDialArgs(t *testing.T) {
411 switch runtime.GOOS {
412 case "plan9":
413 t.Skipf("skipping test on %q", runtime.GOOS)
414 }
415 // This test requires both IPv6 and IPv6 IPv4-mapping functionality.
416 if !supportsIPv4map || testing.Short() || !*testExternal {
417 return
418 }
419
420 l, port := usableListenPort(t, "tcp", "[::]")
421 defer l.Close()
422
423 for _, tt := range prohibitionaryDialArgTests {
424 c, err := Dial(tt.net, tt.addr+":"+port)
425 if err == nil {
426 c.Close()
427 t.Fatalf("Dial(%q, %q) should fail", tt.net, tt.addr)
428 }
429 }
430 }
431
432 func TestWildWildcardListener(t *testing.T) {
433 switch runtime.GOOS {
434 case "plan9":
435 t.Skipf("skipping test on %q", runtime.GOOS)
436 }
437
438 if testing.Short() || !*testExternal {
439 t.Skip("skipping test to avoid external network")
440 }
441
442 defer func() {
443 if p := recover(); p != nil {
444 t.Fatalf("Listen, ListenPacket or protocol-specific Listen panicked: %v", p)
445 }
446 }()
447
448 if ln, err := Listen("tcp", ""); err == nil {
449 ln.Close()
450 }
451 if ln, err := ListenPacket("udp", ""); err == nil {
452 ln.Close()
453 }
454 if ln, err := ListenTCP("tcp", nil); err == nil {
455 ln.Close()
456 }
457 if ln, err := ListenUDP("udp", nil); err == nil {
458 ln.Close()
459 }
460 if ln, err := ListenIP("ip:icmp", nil); err == nil {
461 ln.Close()
462 }
463 }
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