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868
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1 #!/usr/bin/perl
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2
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3 # (C) Sergey Kandaurov
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4 # (C) Nginx, Inc.
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5
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6 # Stream tests for upstream least_conn balancer module with datagrams.
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7
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8 ###############################################################################
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9
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10 use warnings;
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11 use strict;
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12
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13 use Test::More;
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14
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15 BEGIN { use FindBin; chdir($FindBin::Bin); }
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16
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17 use lib 'lib';
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18 use Test::Nginx;
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19 use Test::Nginx::Stream qw/ dgram /;
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20
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21 ###############################################################################
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22
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23 select STDERR; $| = 1;
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24 select STDOUT; $| = 1;
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25
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26 my $t = Test::Nginx->new()->has(qw/stream stream_upstream_least_conn/)
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27 ->write_file_expand('nginx.conf', <<'EOF');
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28
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29 %%TEST_GLOBALS%%
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30
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31 daemon off;
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32
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33 events {
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34 }
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35
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36 stream {
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37 proxy_responses 1;
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38 proxy_timeout 1s;
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39
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40 upstream u {
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41 least_conn;
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42 server 127.0.0.1:8081;
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43 server 127.0.0.1:8082;
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44 }
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45
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46 server {
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47 listen 127.0.0.1:8080 udp;
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48 proxy_pass u;
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49 }
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50 }
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51
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52 EOF
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53
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54 $t->run_daemon(\&udp_daemon, 8081, $t);
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55 $t->run_daemon(\&udp_daemon, 8082, $t);
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56 $t->try_run('no stream udp')->plan(2);
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57
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58 $t->waitforfile($t->testdir . '/8081');
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59 $t->waitforfile($t->testdir . '/8082');
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60
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61 ###############################################################################
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62
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63 is(many('.', 10), '8081: 5, 8082: 5', 'balanced');
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64
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65 my @sockets;
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66 for (1 .. 2) {
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67 my $s = dgram();
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68 $s->write('w');
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69 push @sockets, $s;
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70 }
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71
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72 select undef, undef, undef, 0.2;
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73
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74 is(many('.', 10), '8082: 10', 'least_conn');
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75
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76 ###############################################################################
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77
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78 sub many {
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79 my ($data, $count, %opts) = @_;
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80 my (%ports);
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81
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82 for (1 .. $count) {
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83 if (dgram()->io($data) =~ /(\d+)/) {
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84 $ports{$1} = 0 unless defined $ports{$1};
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85 $ports{$1}++;
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86 }
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87 }
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88
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89 return join ', ', map { $_ . ": " . $ports{$_} } sort keys %ports;
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90 }
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91
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92 ###############################################################################
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93
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94 sub udp_daemon {
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95 my ($port, $t) = @_;
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96
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97 my $server = IO::Socket::INET->new(
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98 Proto => 'udp',
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99 LocalAddr => '127.0.0.1:' . $port,
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100 Reuse => 1,
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101 )
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102 or die "Can't create listening socket: $!\n";
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103
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104 # signal we are ready
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105
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106 open my $fh, '>', $t->testdir() . '/' . $port;
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107 close $fh;
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108
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109 while (1) {
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110 $server->recv(my $buffer, 65536);
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111
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112 my $port = $server->sockport();
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113
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114 if ($buffer =~ /w/ && $port == 8081) {
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115 select undef, undef, undef, 2.5;
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116 }
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117
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118 $buffer = $port;
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119
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120 $server->send($buffer);
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121 }
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122 }
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123
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124 ###############################################################################
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