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[official-gcc.git] / libgo / go / net / unicast_posix_test.go
blob452ac925428d1ae50453b08e9fbf71172405feda
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, different
170 // listening address and same port.
171 func TestDualStackTCPListener(t *testing.T) {
172 if testing.Short() {
173 t.Skip("skipping in -short mode, see issue 5001")
174 }
175 switch runtime.GOOS {
176 case "plan9":
177 t.Skipf("skipping test on %q", runtime.GOOS)
178 }
179 if !supportsIPv6 {
180 t.Skip("ipv6 is not supported")
181 }
182
183 for _, tt := range dualStackListenerTests {
184 if tt.wildcard && !*testExternal {
185 continue
186 }
187 switch runtime.GOOS {
188 case "openbsd":
189 if tt.wildcard && differentWildcardAddr(tt.laddr1, tt.laddr2) {
190 tt.xerr = nil
191 }
192 }
193 l1, port := usableListenPort(t, tt.net1, tt.laddr1)
194 laddr := tt.laddr1 + ":" + port
195 checkFirstListener(t, tt.net1, laddr, l1)
196 laddr = tt.laddr2 + ":" + port
197 l2, err := Listen(tt.net2, laddr)
198 checkDualStackSecondListener(t, tt.net2, laddr, tt.xerr, err, l2)
199 l1.Close()
200 }
201 }
202
203 // TestDualStackUDPListener tests both single and double listen
204 // to a test listener with various address families, differnet
205 // listening address and same port.
206 func TestDualStackUDPListener(t *testing.T) {
207 switch runtime.GOOS {
208 case "plan9":
209 t.Skipf("skipping test on %q", runtime.GOOS)
210 }
211 if !supportsIPv6 {
212 t.Skip("ipv6 is not supported")
213 }
214
215 toudpnet := func(net string) string {
216 switch net {
217 case "tcp":
218 return "udp"
219 case "tcp4":
220 return "udp4"
221 case "tcp6":
222 return "udp6"
223 }
224 return "<nil>"
225 }
226
227 for _, tt := range dualStackListenerTests {
228 if tt.wildcard && (testing.Short() || !*testExternal) {
229 continue
230 }
231 tt.net1 = toudpnet(tt.net1)
232 tt.net2 = toudpnet(tt.net2)
233 switch runtime.GOOS {
234 case "openbsd":
235 if tt.wildcard && differentWildcardAddr(tt.laddr1, tt.laddr2) {
236 tt.xerr = nil
237 }
238 }
239 l1, port := usableListenPacketPort(t, tt.net1, tt.laddr1)
240 laddr := tt.laddr1 + ":" + port
241 checkFirstListener(t, tt.net1, laddr, l1)
242 laddr = tt.laddr2 + ":" + port
243 l2, err := ListenPacket(tt.net2, laddr)
244 checkDualStackSecondListener(t, tt.net2, laddr, tt.xerr, err, l2)
245 l1.Close()
246 }
247 }
248
249 func usableListenPort(t *testing.T, net, laddr string) (l Listener, port string) {
250 var nladdr string
251 var err error
252 switch net {
253 default:
254 panic("usableListenPort net=" + net)
255 case "tcp", "tcp4", "tcp6":
256 l, err = Listen(net, laddr+":0")
257 if err != nil {
258 t.Fatalf("Probe Listen(%q, %q) failed: %v", net, laddr, err)
259 }
260 nladdr = l.(*TCPListener).Addr().String()
261 }
262 _, port, err = SplitHostPort(nladdr)
263 if err != nil {
264 t.Fatalf("SplitHostPort failed: %v", err)
265 }
266 return l, port
267 }
268
269 func usableListenPacketPort(t *testing.T, net, laddr string) (l PacketConn, port string) {
270 var nladdr string
271 var err error
272 switch net {
273 default:
274 panic("usableListenPacketPort net=" + net)
275 case "udp", "udp4", "udp6":
276 l, err = ListenPacket(net, laddr+":0")
277 if err != nil {
278 t.Fatalf("Probe ListenPacket(%q, %q) failed: %v", net, laddr, err)
279 }
280 nladdr = l.(*UDPConn).LocalAddr().String()
281 }
282 _, port, err = SplitHostPort(nladdr)
283 if err != nil {
284 t.Fatalf("SplitHostPort failed: %v", err)
285 }
286 return l, port
287 }
288
289 func differentWildcardAddr(i, j string) bool {
290 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") {
291 return false
292 }
293 if i == "[::]" && j == "[::]" {
294 return false
295 }
296 return true
297 }
298
299 func checkFirstListener(t *testing.T, net, laddr string, l interface{}) {
300 switch net {
301 case "tcp":
302 fd := l.(*TCPListener).fd
303 checkDualStackAddrFamily(t, net, laddr, fd)
304 case "tcp4":
305 fd := l.(*TCPListener).fd
306 if fd.family != syscall.AF_INET {
307 t.Fatalf("First Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET)
308 }
309 case "tcp6":
310 fd := l.(*TCPListener).fd
311 if fd.family != syscall.AF_INET6 {
312 t.Fatalf("First Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
313 }
314 case "udp":
315 fd := l.(*UDPConn).fd
316 checkDualStackAddrFamily(t, net, laddr, fd)
317 case "udp4":
318 fd := l.(*UDPConn).fd
319 if fd.family != syscall.AF_INET {
320 t.Fatalf("First ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET)
321 }
322 case "udp6":
323 fd := l.(*UDPConn).fd
324 if fd.family != syscall.AF_INET6 {
325 t.Fatalf("First ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
326 }
327 default:
328 t.Fatalf("Unexpected network: %q", net)
329 }
330 }
331
332 func checkSecondListener(t *testing.T, net, laddr string, err error, l interface{}) {
333 switch net {
334 case "tcp", "tcp4", "tcp6":
335 if err == nil {
336 l.(*TCPListener).Close()
337 t.Fatalf("Second Listen(%q, %q) should fail", net, laddr)
338 }
339 case "udp", "udp4", "udp6":
340 if err == nil {
341 l.(*UDPConn).Close()
342 t.Fatalf("Second ListenPacket(%q, %q) should fail", net, laddr)
343 }
344 default:
345 t.Fatalf("Unexpected network: %q", net)
346 }
347 }
348
349 func checkDualStackSecondListener(t *testing.T, net, laddr string, xerr, err error, l interface{}) {
350 switch net {
351 case "tcp", "tcp4", "tcp6":
352 if xerr == nil && err != nil || xerr != nil && err == nil {
353 t.Fatalf("Second Listen(%q, %q) returns %v, expected %v", net, laddr, err, xerr)
354 }
355 if err == nil {
356 l.(*TCPListener).Close()
357 }
358 case "udp", "udp4", "udp6":
359 if xerr == nil && err != nil || xerr != nil && err == nil {
360 t.Fatalf("Second ListenPacket(%q, %q) returns %v, expected %v", net, laddr, err, xerr)
361 }
362 if err == nil {
363 l.(*UDPConn).Close()
364 }
365 default:
366 t.Fatalf("Unexpected network: %q", net)
367 }
368 }
369
370 func checkDualStackAddrFamily(t *testing.T, net, laddr string, fd *netFD) {
371 switch a := fd.laddr.(type) {
372 case *TCPAddr:
373 // If a node under test supports both IPv6 capability
374 // and IPv6 IPv4-mapping capability, we can assume
375 // that the node listens on a wildcard address with an
376 // AF_INET6 socket.
377 if supportsIPv4map && fd.laddr.(*TCPAddr).isWildcard() {
378 if fd.family != syscall.AF_INET6 {
379 t.Fatalf("Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
380 }
381 } else {
382 if fd.family != a.family() {
383 t.Fatalf("Listen(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, a.family())
384 }
385 }
386 case *UDPAddr:
387 // If a node under test supports both IPv6 capability
388 // and IPv6 IPv4-mapping capability, we can assume
389 // that the node listens on a wildcard address with an
390 // AF_INET6 socket.
391 if supportsIPv4map && fd.laddr.(*UDPAddr).isWildcard() {
392 if fd.family != syscall.AF_INET6 {
393 t.Fatalf("ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, syscall.AF_INET6)
394 }
395 } else {
396 if fd.family != a.family() {
397 t.Fatalf("ListenPacket(%q, %q) returns address family %v, expected %v", net, laddr, fd.family, a.family())
398 }
399 }
400 default:
401 t.Fatalf("Unexpected protocol address type: %T", a)
402 }
403 }
404
405 var prohibitionaryDialArgTests = []struct {
406 net string
407 addr string
408 }{
409 {"tcp6", "127.0.0.1"},
410 {"tcp6", "[::ffff:127.0.0.1]"},
411 }
412
413 func TestProhibitionaryDialArgs(t *testing.T) {
414 switch runtime.GOOS {
415 case "plan9":
416 t.Skipf("skipping test on %q", runtime.GOOS)
417 }
418 // This test requires both IPv6 and IPv6 IPv4-mapping functionality.
419 if !supportsIPv4map || testing.Short() || !*testExternal {
420 return
421 }
422
423 l, port := usableListenPort(t, "tcp", "[::]")
424 defer l.Close()
425
426 for _, tt := range prohibitionaryDialArgTests {
427 c, err := Dial(tt.net, tt.addr+":"+port)
428 if err == nil {
429 c.Close()
430 t.Fatalf("Dial(%q, %q) should fail", tt.net, tt.addr)
431 }
432 }
433 }
434
435 func TestWildWildcardListener(t *testing.T) {
436 switch runtime.GOOS {
437 case "plan9":
438 t.Skipf("skipping test on %q", runtime.GOOS)
439 }
440
441 if testing.Short() || !*testExternal {
442 t.Skip("skipping test to avoid external network")
443 }
444
445 defer func() {
446 if p := recover(); p != nil {
447 t.Fatalf("Listen, ListenPacket or protocol-specific Listen panicked: %v", p)
448 }
449 }()
450
451 if ln, err := Listen("tcp", ""); err == nil {
452 ln.Close()
453 }
454 if ln, err := ListenPacket("udp", ""); err == nil {
455 ln.Close()
456 }
457 if ln, err := ListenTCP("tcp", nil); err == nil {
458 ln.Close()
459 }
460 if ln, err := ListenUDP("udp", nil); err == nil {
461 ln.Close()
462 }
463 if ln, err := ListenIP("ip:icmp", nil); err == nil {
464 ln.Close()
465 }
466 }
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