9 require Config; import Config;
10 $can_fork = $Config{d_fork} || ($^O eq 'MSWin32' && $Config{useithreads});
12 if ($Config{'extensions'} !~ /\bSocket\b/ &&
13 !(($^O eq 'VMS') && $Config{d_socket})) {
18 # Too many things in this test will hang forever if something is wrong,
19 # so we need a self destruct timer. And IO can hang despite an alarm.
21 # This is convoluted, but we must fork before Test::More, else child's
22 # Test::More thinks that it ran no tests, and prints a message to that
27 die "Fork failed" unless defined $child;
29 $SIG{INT} = sub {exit 0}; # You have 60 seconds. Your time starts now.
30 my $must_finish_by = time + 60;
32 while ($remaining = time - $must_finish_by) {
35 warn "Something unexpectedly hung during testing";
36 kill "INT", $parent or die "Kill failed: $!";
50 if( !$Config{d_alarm} ) {
51 plan skip_all => "alarm() not implemented on this platform";
52 } elsif( !$can_fork ) {
53 plan skip_all => "fork() not implemented on this platform";
55 # This should fail but not die if there is real socketpair
56 eval {socketpair LEFT, RIGHT, -1, -1, -1};
57 if ($@ =~ /^Unsupported socket function "socketpair" called/) {
58 plan skip_all => 'No socketpair (real or emulated)';
61 if ($@ =~ /^Your vendor has not defined Socket macro AF_UNIX/) {
62 plan skip_all => 'No AF_UNIX';
69 # But we'll install an alarm handler in case any of the races below fail.
70 $SIG{ALRM} = sub {die "Unexpected alarm during testing"};
72 ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC),
73 "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC)")
74 or print "# \$\! = $!\n";
76 my @left = ("hello ", "world\n");
77 my @right = ("perl ", "rules!"); # Not like I'm trying to bias any survey here.
80 # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left");
81 is (syswrite (LEFT, $_), length $_, "syswrite to left");
84 # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right");
85 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
88 # stream socket, so our writes will become joined:
89 my ($buffer, $expect);
90 $expect = join '', @right;
92 is (read (LEFT, $buffer, length $expect), length $expect, "read on left");
93 is ($buffer, $expect, "content what we expected?");
94 $expect = join '', @left;
96 is (read (RIGHT, $buffer, length $expect), length $expect, "read on right");
97 is ($buffer, $expect, "content what we expected?");
99 ok (shutdown(LEFT, SHUT_WR), "shutdown left for writing");
100 # This will hang forever if eof is buggy, and alarm doesn't interrupt system
101 # Calls. Hence the child process minder.
103 local $SIG{ALRM} = sub { warn "EOF on right took over 3 seconds" };
104 local $TODO = "Known problems with unix sockets on $^O"
105 if $^O eq 'hpux' || $^O eq 'unicosmk';
108 ok (eof RIGHT, "right is at EOF");
109 is ($!, '', 'and $! should report no error');
113 $SIG{PIPE} = 'IGNORE';
116 = sub { warn "syswrite to left didn't fail within 3 seconds" };
118 is (syswrite (LEFT, "void"), undef, "syswrite to shutdown left should fail");
122 # This may need skipping on some OSes
123 ok (($!{EPIPE} or $!{ESHUTDOWN}), '$! should be EPIPE or ESHUTDOWN')
124 or printf "\$\!=%d(%s)\n", $!, $!;
127 my @gripping = (chr 255, chr 127);
128 foreach (@gripping) {
129 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
132 ok (!eof LEFT, "left is not at EOF");
134 $expect = join '', @gripping;
136 is (read (LEFT, $buffer, length $expect), length $expect, "read on left");
137 is ($buffer, $expect, "content what we expected?");
139 ok (close LEFT, "close left");
140 ok (close RIGHT, "close right");
144 # I suspect we also need a self destruct time-bomb for these, as I don't see any
145 # guarantee that the stack won't drop a UDP packet, even if it is for localhost.
148 skip "No usable SOCK_DGRAM", 24 if ($^O eq 'MSWin32');
151 ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC),
152 "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC)")
153 or print "# \$\! = $!\n";
156 # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left");
157 is (syswrite (LEFT, $_), length $_, "syswrite to left");
160 # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right");
161 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
164 # stream socket, so our writes will become joined:
166 $total = join '', @right;
167 foreach $expect (@right) {
169 is (sysread (LEFT, $buffer, length $total), length $expect, "read on left");
170 is ($buffer, $expect, "content what we expected?");
172 $total = join '', @left;
173 foreach $expect (@left) {
175 is (sysread (RIGHT, $buffer, length $total), length $expect, "read on right");
176 is ($buffer, $expect, "content what we expected?");
179 ok (shutdown(LEFT, 1), "shutdown left for writing");
180 # eof uses buffering. eof is indicated by a sysread of zero.
181 # but for a datagram socket there's no way it can know nothing will ever be
185 local $SIG{ALRM} = sub { $alarmed = 1; };
186 print "# Approximate forever as 3 seconds. Wait 'forever'...\n";
189 is (sysread (RIGHT, $buffer, 1), undef,
190 "read on right should be interrupted");
191 is ($alarmed, 1, "alarm should have fired");
195 #ok (eof RIGHT, "right is at EOF");
197 foreach (@gripping) {
198 is (syswrite (RIGHT, $_), length $_, "syswrite to right");
201 $total = join '', @gripping;
202 foreach $expect (@gripping) {
204 is (sysread (LEFT, $buffer, length $total), length $expect, "read on left");
205 is ($buffer, $expect, "content what we expected?");
208 ok (close LEFT, "close left");
209 ok (close RIGHT, "close right");
211 } # end of DGRAM SKIP
213 kill "INT", $child or warn "Failed to kill child process $child: $!";