8 require Config; import Config;
9 $can_fork = $Config{'d_fork'} || $Config{'d_pseudofork'};
11 if ($^O eq "hpux" or $Config{'extensions'} !~ /\bSocket\b/ &&
12 !(($^O eq 'VMS') && $Config{d_socket})) {
19 # This was in the BEGIN block, but since Test::More 0.47 added support to
20 # detect forking, we don't need to fork before Test::More initialises.
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.
28 die "Fork failed" unless defined $child;
30 $SIG{INT} = sub {exit 0}; # You have 60 seconds. Your time starts now.
31 my $must_finish_by = time + 60;
33 while (($remaining = $must_finish_by - time) > 0) {
36 warn "Something unexpectedly hung during testing";
37 kill "INT", $parent or die "Kill failed: $!";
41 unless ($has_perlio = find PerlIO::Layer 'perlio') {
43 # Since you don't have perlio you might get failures with UTF-8 locales.
56 if( !$Config{d_alarm} ) {
57 plan skip_all => "alarm() not implemented on this platform";
58 } elsif( !$can_fork ) {
59 plan skip_all => "fork() not implemented on this platform";
61 # This should fail but not die if there is real socketpair
62 eval {socketpair LEFT, RIGHT, -1, -1, -1};
63 if ($@ =~ /^Unsupported socket function "socketpair" called/ ||
64 $! =~ /^The operation requested is not supported./) { # Stratus VOS
65 plan skip_all => 'No socketpair (real or emulated)';
68 if ($@ =~ /^Your vendor has not defined Socket macro AF_UNIX/) {
69 plan skip_all => 'No AF_UNIX';
76 # But we'll install an alarm handler in case any of the races below fail.
77 $SIG{ALRM} = sub {die "Unexpected alarm during testing"};
79 ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC),
80 "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC)")
81 or print "# \$\! = $!\n";
84 binmode(LEFT, ":bytes");
85 binmode(RIGHT, ":bytes");
88 my @left = ("hello ", "world\n");
89 my @right = ("perl ", "rules!"); # Not like I'm trying to bias any survey here.
92 # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left");
93 is (syswrite (LEFT, $_), length $_, "syswrite to left");
96 # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right");
97 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
100 # stream socket, so our writes will become joined:
101 my ($buffer, $expect);
102 $expect = join '', @right;
104 is (read (LEFT, $buffer, length $expect), length $expect, "read on left");
105 is ($buffer, $expect, "content what we expected?");
106 $expect = join '', @left;
108 is (read (RIGHT, $buffer, length $expect), length $expect, "read on right");
109 is ($buffer, $expect, "content what we expected?");
111 ok (shutdown(LEFT, SHUT_WR), "shutdown left for writing");
112 # This will hang forever if eof is buggy, and alarm doesn't interrupt system
113 # Calls. Hence the child process minder.
115 skip "SCO Unixware / OSR have a bug with shutdown",2 if $^O =~ /^(?:svr|sco)/;
116 local $SIG{ALRM} = sub { warn "EOF on right took over 3 seconds" };
117 local $TODO = "Known problems with unix sockets on $^O"
118 if $^O eq 'hpux' || $^O eq 'super-ux';
121 ok (eof RIGHT, "right is at EOF");
122 local $TODO = "Known problems with unix sockets on $^O"
123 if $^O eq 'unicos' || $^O eq 'unicosmk';
124 is ($!, '', 'and $! should report no error');
129 $SIG{PIPE} = 'IGNORE';
132 = sub { warn "syswrite to left didn't fail within 3 seconds" };
134 # Split the system call from the is() - is() does IO so
135 # (say) a flush may do a seek which on a pipe may disturb errno
136 my $ans = syswrite (LEFT, "void");
138 is ($ans, undef, "syswrite to shutdown left should fail");
142 # This may need skipping on some OSes - restoring value saved above
145 ok (($!{EPIPE} or $!{ESHUTDOWN}), '$! should be EPIPE or ESHUTDOWN')
146 or printf "\$\!=%d(%s)\n", $err, $err;
149 my @gripping = (chr 255, chr 127);
150 foreach (@gripping) {
151 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
154 ok (!eof LEFT, "left is not at EOF");
156 $expect = join '', @gripping;
158 is (read (LEFT, $buffer, length $expect), length $expect, "read on left");
159 is ($buffer, $expect, "content what we expected?");
161 ok (close LEFT, "close left");
162 ok (close RIGHT, "close right");
166 # I suspect we also need a self destruct time-bomb for these, as I don't see any
167 # guarantee that the stack won't drop a UDP packet, even if it is for localhost.
170 skip "No usable SOCK_DGRAM for socketpair", 24 if ($^O =~ /^(MSWin32|os2)\z/);
171 local $TODO = "socketpair not supported on $^O" if $^O eq 'nto';
173 ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC),
174 "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC)")
175 or print "# \$\! = $!\n";
178 binmode(LEFT, ":bytes");
179 binmode(RIGHT, ":bytes");
183 # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left");
184 is (syswrite (LEFT, $_), length $_, "syswrite to left");
187 # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right");
188 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
191 # stream socket, so our writes will become joined:
193 $total = join '', @right;
194 foreach $expect (@right) {
196 is (sysread (LEFT, $buffer, length $total), length $expect, "read on left");
197 is ($buffer, $expect, "content what we expected?");
199 $total = join '', @left;
200 foreach $expect (@left) {
202 is (sysread (RIGHT, $buffer, length $total), length $expect, "read on right");
203 is ($buffer, $expect, "content what we expected?");
206 ok (shutdown(LEFT, 1), "shutdown left for writing");
208 # eof uses buffering. eof is indicated by a sysread of zero.
209 # but for a datagram socket there's no way it can know nothing will ever be
212 skip "$^O does length 0 udp reads", 2 if ($^O eq 'os390');
215 local $SIG{ALRM} = sub { $alarmed = 1; };
216 print "# Approximate forever as 3 seconds. Wait 'forever'...\n";
219 is (sysread (RIGHT, $buffer, 1), undef,
220 "read on right should be interrupted");
221 is ($alarmed, 1, "alarm should have fired");
226 #ok (eof RIGHT, "right is at EOF");
228 foreach (@gripping) {
229 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
232 $total = join '', @gripping;
233 foreach $expect (@gripping) {
235 is (sysread (LEFT, $buffer, length $total), length $expect, "read on left");
236 is ($buffer, $expect, "content what we expected?");
239 ok (close LEFT, "close left");
240 ok (close RIGHT, "close right");
242 } # end of DGRAM SKIP
244 kill "INT", $child or warn "Failed to kill child process $child: $!";