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1 | #!./perl -w |
2 | |
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3 | my $child; |
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4 | my $can_fork; |
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5 | my $has_perlio; |
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6 | |
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7 | BEGIN { |
8 | chdir 't' if -d 't'; |
9 | @INC = '../lib'; |
10 | require Config; import Config; |
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11 | $can_fork = $Config{'d_fork'} || $Config{'d_pseudofork'}; |
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12 | |
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13 | if ($^O eq "hpux" or $Config{'extensions'} !~ /\bSocket\b/ && |
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14 | !(($^O eq 'VMS') && $Config{d_socket})) { |
15 | print "1..0\n"; |
16 | exit 0; |
2b09c5a8 |
17 | } |
850d6073 |
18 | } |
19 | |
20 | { |
21 | # This was in the BEGIN block, but since Test::More 0.47 added support to |
22 | # detect forking, we don't need to fork before Test::More initialises. |
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23 | |
24 | # Too many things in this test will hang forever if something is wrong, |
25 | # so we need a self destruct timer. And IO can hang despite an alarm. |
26 | |
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27 | if( $can_fork) { |
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28 | my $parent = $$; |
29 | $child = fork; |
30 | die "Fork failed" unless defined $child; |
31 | if (!$child) { |
32 | $SIG{INT} = sub {exit 0}; # You have 60 seconds. Your time starts now. |
33 | my $must_finish_by = time + 60; |
34 | my $remaining; |
208b703c |
35 | while (($remaining = $must_finish_by - time) > 0) { |
b4023995 |
36 | sleep $remaining; |
37 | } |
38 | warn "Something unexpectedly hung during testing"; |
39 | kill "INT", $parent or die "Kill failed: $!"; |
40 | exit 1; |
41 | } |
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42 | } |
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43 | unless ($has_perlio = find PerlIO::Layer 'perlio') { |
44 | print <<EOF; |
45 | # Since you don't have perlio you might get failures with UTF-8 locales. |
46 | EOF |
47 | } |
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48 | } |
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49 | |
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50 | use Socket; |
51 | use Test::More; |
52 | use strict; |
53 | use warnings; |
5ec8c883 |
54 | use Errno; |
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55 | |
56 | my $skip_reason; |
57 | |
58 | if( !$Config{d_alarm} ) { |
59 | plan skip_all => "alarm() not implemented on this platform"; |
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60 | } elsif( !$can_fork ) { |
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61 | plan skip_all => "fork() not implemented on this platform"; |
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62 | } else { |
63 | # This should fail but not die if there is real socketpair |
64 | eval {socketpair LEFT, RIGHT, -1, -1, -1}; |
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65 | if ($@ =~ /^Unsupported socket function "socketpair" called/ || |
66 | $! =~ /^The operation requested is not supported./) { # Stratus VOS |
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67 | plan skip_all => 'No socketpair (real or emulated)'; |
68 | } else { |
69 | eval {AF_UNIX}; |
70 | if ($@ =~ /^Your vendor has not defined Socket macro AF_UNIX/) { |
71 | plan skip_all => 'No AF_UNIX'; |
72 | } else { |
cd0506f1 |
73 | plan tests => 45; |
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74 | } |
75 | } |
76 | } |
77 | |
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78 | # But we'll install an alarm handler in case any of the races below fail. |
79 | $SIG{ALRM} = sub {die "Unexpected alarm during testing"}; |
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80 | |
81 | ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC), |
82 | "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_STREAM, PF_UNSPEC)") |
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83 | or print "# \$\! = $!\n"; |
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84 | |
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85 | if ($has_perlio) { |
86 | binmode(LEFT, ":bytes"); |
87 | binmode(RIGHT, ":bytes"); |
88 | } |
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89 | |
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90 | my @left = ("hello ", "world\n"); |
91 | my @right = ("perl ", "rules!"); # Not like I'm trying to bias any survey here. |
92 | |
93 | foreach (@left) { |
94 | # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left"); |
95 | is (syswrite (LEFT, $_), length $_, "syswrite to left"); |
96 | } |
97 | foreach (@right) { |
98 | # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right"); |
99 | is (syswrite (RIGHT, $_), length $_, "syswrite to right"); |
100 | } |
101 | |
102 | # stream socket, so our writes will become joined: |
103 | my ($buffer, $expect); |
104 | $expect = join '', @right; |
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105 | undef $buffer; |
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106 | is (read (LEFT, $buffer, length $expect), length $expect, "read on left"); |
107 | is ($buffer, $expect, "content what we expected?"); |
108 | $expect = join '', @left; |
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109 | undef $buffer; |
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110 | is (read (RIGHT, $buffer, length $expect), length $expect, "read on right"); |
111 | is ($buffer, $expect, "content what we expected?"); |
112 | |
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113 | ok (shutdown(LEFT, SHUT_WR), "shutdown left for writing"); |
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114 | # This will hang forever if eof is buggy, and alarm doesn't interrupt system |
115 | # Calls. Hence the child process minder. |
381c1bae |
116 | SKIP: { |
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117 | skip "SCO Unixware / OSR have a bug with shutdown",2 if $^O =~ /^(?:svr|sco)/; |
c5f49a01 |
118 | local $SIG{ALRM} = sub { warn "EOF on right took over 3 seconds" }; |
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119 | local $TODO = "Known problems with unix sockets on $^O" |
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120 | if $^O eq 'hpux' || $^O eq 'super-ux'; |
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121 | alarm 3; |
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122 | $! = 0; |
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123 | ok (eof RIGHT, "right is at EOF"); |
8bfa5a13 |
124 | local $TODO = "Known problems with unix sockets on $^O" |
125 | if $^O eq 'unicos' || $^O eq 'unicosmk'; |
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126 | is ($!, '', 'and $! should report no error'); |
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127 | alarm 60; |
128 | } |
129 | |
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130 | my $err = $!; |
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131 | $SIG{PIPE} = 'IGNORE'; |
132 | { |
133 | local $SIG{ALRM} |
134 | = sub { warn "syswrite to left didn't fail within 3 seconds" }; |
135 | alarm 3; |
b5d2fea7 |
136 | # Split the system call from the is() - is() does IO so |
137 | # (say) a flush may do a seek which on a pipe may disturb errno |
138 | my $ans = syswrite (LEFT, "void"); |
139 | $err = $!; |
140 | is ($ans, undef, "syswrite to shutdown left should fail"); |
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141 | alarm 60; |
142 | } |
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143 | { |
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144 | # This may need skipping on some OSes - restoring value saved above |
145 | # should help |
146 | $! = $err; |
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147 | ok (($!{EPIPE} or $!{ESHUTDOWN}), '$! should be EPIPE or ESHUTDOWN') |
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148 | or printf "\$\!=%d(%s)\n", $err, $err; |
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149 | } |
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150 | |
151 | my @gripping = (chr 255, chr 127); |
152 | foreach (@gripping) { |
153 | is (syswrite (RIGHT, $_), length $_, "syswrite to right"); |
154 | } |
155 | |
156 | ok (!eof LEFT, "left is not at EOF"); |
157 | |
158 | $expect = join '', @gripping; |
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159 | undef $buffer; |
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160 | is (read (LEFT, $buffer, length $expect), length $expect, "read on left"); |
161 | is ($buffer, $expect, "content what we expected?"); |
162 | |
163 | ok (close LEFT, "close left"); |
164 | ok (close RIGHT, "close right"); |
165 | |
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166 | |
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167 | # And now datagrams |
168 | # I suspect we also need a self destruct time-bomb for these, as I don't see any |
169 | # guarantee that the stack won't drop a UDP packet, even if it is for localhost. |
170 | |
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171 | SKIP: { |
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172 | skip "No usable SOCK_DGRAM for socketpair", 24 if ($^O =~ /^(MSWin32|os2)\z/); |
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173 | local $TODO = "socketpair not supported on $^O" if $^O eq 'nto'; |
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174 | |
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175 | ok (socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC), |
176 | "socketpair (LEFT, RIGHT, AF_UNIX, SOCK_DGRAM, PF_UNSPEC)") |
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177 | or print "# \$\! = $!\n"; |
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178 | |
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179 | if ($has_perlio) { |
180 | binmode(LEFT, ":bytes"); |
181 | binmode(RIGHT, ":bytes"); |
182 | } |
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183 | |
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184 | foreach (@left) { |
185 | # is (syswrite (LEFT, $_), length $_, "write " . _qq ($_) . " to left"); |
186 | is (syswrite (LEFT, $_), length $_, "syswrite to left"); |
187 | } |
188 | foreach (@right) { |
189 | # is (syswrite (RIGHT, $_), length $_, "write " . _qq ($_) . " to right"); |
190 | is (syswrite (RIGHT, $_), length $_, "syswrite to right"); |
191 | } |
192 | |
193 | # stream socket, so our writes will become joined: |
194 | my ($total); |
195 | $total = join '', @right; |
196 | foreach $expect (@right) { |
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197 | undef $buffer; |
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198 | is (sysread (LEFT, $buffer, length $total), length $expect, "read on left"); |
199 | is ($buffer, $expect, "content what we expected?"); |
200 | } |
201 | $total = join '', @left; |
202 | foreach $expect (@left) { |
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203 | undef $buffer; |
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204 | is (sysread (RIGHT, $buffer, length $total), length $expect, "read on right"); |
205 | is ($buffer, $expect, "content what we expected?"); |
206 | } |
207 | |
208 | ok (shutdown(LEFT, 1), "shutdown left for writing"); |
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209 | |
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210 | # eof uses buffering. eof is indicated by a sysread of zero. |
211 | # but for a datagram socket there's no way it can know nothing will ever be |
212 | # sent |
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213 | SKIP: { |
214 | skip "$^O does length 0 udp reads", 2 if ($^O eq 'os390'); |
215 | |
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216 | my $alarmed = 0; |
217 | local $SIG{ALRM} = sub { $alarmed = 1; }; |
218 | print "# Approximate forever as 3 seconds. Wait 'forever'...\n"; |
219 | alarm 3; |
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220 | undef $buffer; |
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221 | is (sysread (RIGHT, $buffer, 1), undef, |
222 | "read on right should be interrupted"); |
223 | is ($alarmed, 1, "alarm should have fired"); |
224 | } |
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225 | |
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226 | alarm 30; |
227 | |
228 | #ok (eof RIGHT, "right is at EOF"); |
229 | |
230 | foreach (@gripping) { |
231 | is (syswrite (RIGHT, $_), length $_, "syswrite to right"); |
232 | } |
233 | |
234 | $total = join '', @gripping; |
235 | foreach $expect (@gripping) { |
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236 | undef $buffer; |
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237 | is (sysread (LEFT, $buffer, length $total), length $expect, "read on left"); |
238 | is ($buffer, $expect, "content what we expected?"); |
239 | } |
240 | |
241 | ok (close LEFT, "close left"); |
242 | ok (close RIGHT, "close right"); |
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243 | |
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244 | } # end of DGRAM SKIP |
245 | |
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246 | kill "INT", $child or warn "Failed to kill child process $child: $!"; |
247 | exit 0; |