1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
package NDB::Util::Socket;
use strict;
use Carp;
use Symbol;
use Socket;
use Errno;
require NDB::Util::IO;
use vars qw(@ISA);
@ISA = qw(NDB::Util::IO);
# constructors
my $log;
sub initmodule {
$log = NDB::Util::Log->instance;
}
NDB::Util::Socket->attributes(
domain => sub { $_ == PF_INET || $_ == PF_UNIX },
type => sub { $_ == SOCK_STREAM },
proto => sub { /^(0|tcp)$/ },
);
sub desc {
my $socket = shift;
return $socket->SUPER::desc;
}
sub new {
my $class = shift;
@_ % 2 == 0 or confess 0+@_;
my(%attr) = @_;
my $socket = $class->SUPER::new(%attr);
$socket->setdomain($attr{domain})
or $log->push, return undef;
$socket->settype($attr{type})
or $log->push, return undef;
$socket->setproto($attr{proto})
or $log->push, return undef;
my $nproto;
if ($socket->getproto =~ /^\d+/) {
$nproto = $socket->getproto;
}
else {
$nproto = getprotobyname($socket->getproto);
unless (defined($nproto)) {
$log->put("%s: getprotobyname failed", $socket->getproto);
return undef;
}
}
my $fh = gensym();
if (! socket($fh, $socket->getdomain, $socket->gettype, $nproto)) {
$log->put("create socket failed: $!");
return undef;
}
$socket->setfh($fh)
or $log->push, return undef;
return $socket;
}
sub setopt {
my $socket = shift;
@_ >= 2 or confess 'oops';
my $level = shift;
my $optname = shift;
my $optval = @_ ? pack("l*", @_) : undef;
my $fh = $socket->getfh;
if (! setsockopt($fh, $level, $optname, $optval)) {
$log->put("setsockopt failed: $!")->push($socket);
return undef;
}
return 1;
}
sub connect {
my $socket = shift;
@_ == 1 or confess 0+@_;
my($paddr) = @_;
my $fh = $socket->getfh;
if (! connect($fh, $paddr)) {
$log->put("connect failed: $!")->push($socket);
return undef;
}
$log->put("connect done")->push($socket)->debug;
return 1;
}
sub bind {
my $socket = shift;
@_ == 1 or confess 0+@_;
my($paddr) = @_;
my $fh = $socket->getfh;
if (! bind($fh, $paddr)) {
$log->put("bind failed: $!")->push($socket);
return undef;
}
return 1;
}
sub listen {
my $socket = shift;
@_ == 0 or confess 0+@_;
my $fh = $socket->getfh;
if (! listen($fh, SOMAXCONN)) {
$log->put("listen failed: $!")->push($socket);
return undef;
}
return 1;
}
sub accept {
my $socket = shift;
@_ == 1 or confess 0+@_;
my($timeout) = @_;
$timeout =~ /^\d+$/ or confess 'oops';
my $fh = $socket->getfh;
my $gh = gensym();
my $paddr;
eval {
if ($^O ne 'MSWin32' && $timeout > 0) {
local $SIG{ALRM} = sub { die("timed out\n") };
alarm($timeout);
$paddr = accept($gh, $fh);
alarm(0);
}
else {
$paddr = accept($gh, $fh);
}
};
if ($@) {
$log->put("accept failed: $@")->push($socket);
return undef;
}
if (! $paddr) {
my $errno = 0+$!;
if ($errno == Errno::EINTR) {
$log->put("accept interrupted")->push($socket);
return 0;
}
$log->put("accept failed: $!")->push($socket);
return undef;
}
my $csocket = $socket->clone(fh => $gh);
$csocket->acceptaddr($paddr);
return $csocket;
}
sub DESTROY {
my $socket = shift;
$socket->close;
}
1;
# vim:set sw=4:
|
