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comparison t/udp.t @ 0:30782bb1fc04 MEMCACHED_1_2_3

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memcached-1.2.3
author Maxim Dounin <mdounin@mdounin.ru>
date Sun, 23 Sep 2007 03:58:34 +0400
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-1:000000000000 0:30782bb1fc04
1 #!/usr/bin/perl
2
3 use strict;
4 use Test::More tests => 33;
5 use FindBin qw($Bin);
6 use lib "$Bin/lib";
7 use MemcachedTest;
8
9 my $server = new_memcached();
10 my $sock = $server->sock;
11
12 # set foo (and should get it)
13 print $sock "set foo 0 0 6\r\nfooval\r\n";
14 is(scalar <$sock>, "STORED\r\n", "stored foo");
15 mem_get_is($sock, "foo", "fooval");
16
17 my $usock = $server->new_udp_sock
18 or die "Can't bind : $@\n";
19
20 # test all the steps, one by one:
21 test_single($usock);
22
23 # testing sequence numbers
24 for my $offt (1, 1, 2) {
25 my $seq = 160 + $offt;
26 my $res = send_udp_request($usock, $seq, "get foo\r\n");
27 ok($res, "got result");
28 is(keys %$res, 1, "one key (one packet)");
29 ok($res->{0}, "only got seq number 0");
30 is(substr($res->{0}, 8), "VALUE foo 0 6\r\nfooval\r\nEND\r\n");
31 is(hexify(substr($res->{0}, 0, 2)), hexify(pack("n", $seq)), "sequence number in response ($seq) is correct");
32 }
33
34 # testing non-existent stuff
35 my $res = send_udp_request($usock, 404, "get notexist\r\n");
36 ok($res, "got result");
37 is(keys %$res, 1, "one key (one packet)");
38 ok($res->{0}, "only got seq number 0");
39 is(hexify(substr($res->{0}, 0, 2)), hexify(pack("n", 404)), "sequence number 404 correct");
40 is(substr($res->{0}, 8), "END\r\n");
41
42 # test multi-packet response
43 {
44 my $big = "abcd" x 1024;
45 my $len = length $big;
46 print $sock "set big 0 0 $len\r\n$big\r\n";
47 is(scalar <$sock>, "STORED\r\n", "stored big");
48 mem_get_is($sock, "big", $big, "big value matches");
49 my $res = send_udp_request($usock, 999, "get big\r\n");
50 is(scalar keys %$res, 3, "three packet response");
51 like($res->{0}, qr/VALUE big 0 4096/, "first packet has value line");
52 like($res->{2}, qr/\r\nEND\r\n/, "last packet has end");
53 is(hexify(substr($res->{1}, 0, 2)), hexify(pack("n", 999)), "sequence number of middle packet is correct");
54 }
55
56 sub test_single {
57 my $usock = shift;
58 my $req = pack("nnnn", 45, 0, 1, 0); # request id (opaque), seq num, #packets, reserved (must be 0)
59 $req .= "get foo\r\n";
60 ok(defined send($usock, $req, 0), "sent request");
61
62 my $rin = '';
63 vec($rin, fileno($usock), 1) = 1;
64 my $rout;
65 ok(select($rout = $rin, undef, undef, 2.0), "got readability");
66
67 my $sender;
68 my $res;
69 $sender = $usock->recv($res, 1500, 0);
70
71 my $id = pack("n", 45);
72 is(hexify(substr($res, 0, 8)), hexify($id) . '0000' . '0001' . '0000', "header is correct");
73 is(length $res, 36, '');
74 is(substr($res, 8), "VALUE foo 0 6\r\nfooval\r\nEND\r\n", "payload is as expected");
75 }
76
77 sub hexify {
78 my $val = shift;
79 $val =~ s/(.)/sprintf("%02x", ord($1))/egs;
80 return $val;
81 }
82
83 # returns undef on select timeout, or hashref of "seqnum" -> payload (including headers)
84 sub send_udp_request {
85 my ($sock, $reqid, $req) = @_;
86
87 my $pkt = pack("nnnn", $reqid, 0, 1, 0); # request id (opaque), seq num, #packets, reserved (must be 0)
88 $pkt .= $req;
89 my $fail = sub {
90 my $msg = shift;
91 warn " FAILING send_udp because: $msg\n";
92 return undef;
93 };
94 return $fail->("send") unless send($sock, $pkt, 0);
95
96 my $ret = {};
97
98 my $got = 0; # packets got
99 my $numpkts = undef;
100
101 while (!defined($numpkts) || $got < $numpkts) {
102 my $rin = '';
103 vec($rin, fileno($sock), 1) = 1;
104 my $rout;
105 return $fail->("timeout after $got packets") unless
106 select($rout = $rin, undef, undef, 1.5);
107
108 my $res;
109 my $sender = $sock->recv($res, 1500, 0);
110 my ($resid, $seq, $this_numpkts, $resv) = unpack("nnnn", substr($res, 0, 8));
111 die "Response ID of $resid doesn't match request if of $reqid" unless $resid == $reqid;
112 die "Reserved area not zero" unless $resv == 0;
113 die "num packets changed midstream!" if defined $numpkts && $this_numpkts != $numpkts;
114 $numpkts = $this_numpkts;
115 $ret->{$seq} = $res;
116 $got++;
117 }
118 return $ret;
119 }
120
121 __END__
122 $sender = recv($usock, $ans, 1050, 0);
123
124 __END__
125 $usock->send
126
127
128 ($hispaddr = recv(SOCKET, $rtime, 4, 0)) || die "recv: $!";
129 ($port, $hisiaddr) = sockaddr_in($hispaddr);
130 $host = gethostbyaddr($hisiaddr, AF_INET);
131 $histime = unpack("N", $rtime) - $SECS_of_70_YEARS ;