10 require Config; import Config;
11 $can_fork = $Config{'d_fork'}
12 || ($^O eq 'MSWin32' && $Config{useithreads}
13 && $Config{ccflags} =~ /-DPERL_IMPLICIT_SYS\b/);
16 if ($^O eq "hpux" or $Config{'extensions'} !~ /\bSocket\b/ &&
17 !(($^O eq 'VMS') && $Config{d_socket})) {
22 # Too many things in this test will hang forever if something is wrong,
23 # so we need a self destruct timer. And IO can hang despite an alarm.
25 # This is convoluted, but we must fork before Test::More, else child's
26 # Test::More thinks that it ran no tests, and prints a message to that
31 die "Fork failed" unless defined $child;
33 $SIG{INT} = sub {exit 0}; # You have 60 seconds. Your time starts now.
34 my $must_finish_by = time + 60;
36 while (($remaining = $must_finish_by - time) > 0) {
39 warn "Something unexpectedly hung during testing";
40 kill "INT", $parent or die "Kill failed: $!";
44 unless ($has_perlio = find PerlIO::Layer 'perlio') {
46 # Since you don't have perlio you might get failures with UTF-8 locales.
59 if( !$Config{d_alarm} ) {
60 plan skip_all => "alarm() not implemented on this platform";
61 } elsif( !$can_fork ) {
62 plan skip_all => "fork() not implemented on this platform";
64 # This should fail but not die if there is real socketpair
65 eval {socketpair LEFT, RIGHT, -1, -1, -1};
66 if ($@ =~ /^Unsupported socket function "socketpair" called/ ||
67 $! =~ /^The operation requested is not supported./) { # Stratus VOS
68 plan skip_all => 'No socketpair (real or emulated)';
71 if ($@ =~ /^Your vendor has not defined Socket macro AF_UNIX/) {
72 plan skip_all => 'No AF_UNIX';
79 # But we'll install an alarm handler in case any of the races below fail.
80 $SIG{ALRM} = sub {die "Unexpected alarm during testing"};
82 ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC),
83 "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC)")
84 or print "# \$\! = $!\n";
87 binmode(LEFT, ":bytes");
88 binmode(RIGHT, ":bytes");
91 my @left = ("hello ", "world\n");
92 my @right = ("perl ", "rules!"); # Not like I'm trying to bias any survey here.
95 # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left");
96 is (syswrite (LEFT, $_), length $_, "syswrite to left");
99 # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right");
100 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
103 # stream socket, so our writes will become joined:
104 my ($buffer, $expect);
105 $expect = join '', @right;
107 is (read (LEFT, $buffer, length $expect), length $expect, "read on left");
108 is ($buffer, $expect, "content what we expected?");
109 $expect = join '', @left;
111 is (read (RIGHT, $buffer, length $expect), length $expect, "read on right");
112 is ($buffer, $expect, "content what we expected?");
114 ok (shutdown(LEFT, SHUT_WR), "shutdown left for writing");
115 # This will hang forever if eof is buggy, and alarm doesn't interrupt system
116 # Calls. Hence the child process minder.
118 local $SIG{ALRM} = sub { warn "EOF on right took over 3 seconds" };
119 local $TODO = "Known problems with unix sockets on $^O"
120 if $^O eq 'hpux' || $^O eq 'unicosmk' ||
121 $^O eq 'unicos' || $^O eq 'super-ux';
124 ok (eof RIGHT, "right is at EOF");
125 is ($!, '', 'and $! should report no error');
130 $SIG{PIPE} = 'IGNORE';
133 = sub { warn "syswrite to left didn't fail within 3 seconds" };
135 # Split the system call from the is() - is() does IO so
136 # (say) a flush may do a seek which on a pipe may disturb errno
137 my $ans = syswrite (LEFT, "void");
139 is ($ans, undef, "syswrite to shutdown left should fail");
143 # This may need skipping on some OSes - restoring value saved above
146 ok (($!{EPIPE} or $!{ESHUTDOWN}), '$! should be EPIPE or ESHUTDOWN')
147 or printf "\$\!=%d(%s)\n", $err, $err;
150 my @gripping = (chr 255, chr 127);
151 foreach (@gripping) {
152 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
155 ok (!eof LEFT, "left is not at EOF");
157 $expect = join '', @gripping;
159 is (read (LEFT, $buffer, length $expect), length $expect, "read on left");
160 is ($buffer, $expect, "content what we expected?");
162 ok (close LEFT, "close left");
163 ok (close RIGHT, "close right");
167 # I suspect we also need a self destruct time-bomb for these, as I don't see any
168 # guarantee that the stack won't drop a UDP packet, even if it is for localhost.
171 skip "No usable SOCK_DGRAM for socketpair", 24 if ($^O =~ /^(MSWin32|os2)\z/);
172 local $TODO = "socketpair not supported on $^O" if $^O eq 'nto';
174 ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC),
175 "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC)")
176 or print "# \$\! = $!\n";
179 binmode(LEFT, ":bytes");
180 binmode(RIGHT, ":bytes");
184 # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left");
185 is (syswrite (LEFT, $_), length $_, "syswrite to left");
188 # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right");
189 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
192 # stream socket, so our writes will become joined:
194 $total = join '', @right;
195 foreach $expect (@right) {
197 is (sysread (LEFT, $buffer, length $total), length $expect, "read on left");
198 is ($buffer, $expect, "content what we expected?");
200 $total = join '', @left;
201 foreach $expect (@left) {
203 is (sysread (RIGHT, $buffer, length $total), length $expect, "read on right");
204 is ($buffer, $expect, "content what we expected?");
207 ok (shutdown(LEFT, 1), "shutdown left for writing");
209 # eof uses buffering. eof is indicated by a sysread of zero.
210 # but for a datagram socket there's no way it can know nothing will ever be
213 skip "$^O does length 0 udp reads", 2 if ($^O eq 'os390');
216 local $SIG{ALRM} = sub { $alarmed = 1; };
217 print "# Approximate forever as 3 seconds. Wait 'forever'...\n";
220 is (sysread (RIGHT, $buffer, 1), undef,
221 "read on right should be interrupted");
222 is ($alarmed, 1, "alarm should have fired");
227 #ok (eof RIGHT, "right is at EOF");
229 foreach (@gripping) {
230 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
233 $total = join '', @gripping;
234 foreach $expect (@gripping) {
236 is (sysread (LEFT, $buffer, length $total), length $expect, "read on left");
237 is ($buffer, $expect, "content what we expected?");
240 ok (close LEFT, "close left");
241 ok (close RIGHT, "close right");
243 } # end of DGRAM SKIP
245 kill "INT", $child or warn "Failed to kill child process $child: $!";