prosody
1dd468c63a3d
spec/net_resolvers_service_spec.lua

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spec/net_resolvers_service_spec.lua @ 12775:1dd468c63a3d

mod_blocklist: Add option 'migrate_legacy_blocking' to disable migration from mod_privacy Tiny performance improvement for new users by skipping this check. Most servers should have gone trough the migration for all active users long ago. As a suitable first step of phasing out this code, we make it possible to disable it first. Later it can be disabled by default, before finally the code is deleted.
author Kim Alvefur <zash@zash.se>
date Mon, 17 Oct 2022 15:20:06 +0200
parent 12401:c029ddcad258
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12401
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local set = require "util.set";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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2
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
3 insulate("net.resolvers.service", function ()
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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4 local adns = {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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5 resolver = function ()
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
6 return {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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7 lookup = function (_, cb, qname, qtype, qclass)
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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diff changeset
8 if qname == "_xmpp-server._tcp.example.com"
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
9 and (qtype or "SRV") == "SRV"
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
10 and (qclass or "IN") == "IN" then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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11 cb({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 { -- 60+35+60
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 srv = { target = "xmpp0-a.example.com", port = 5228, priority = 0, weight = 60 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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14 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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15 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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16 srv = { target = "xmpp0-b.example.com", port = 5216, priority = 0, weight = 35 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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17 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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18 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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19 srv = { target = "xmpp0-c.example.com", port = 5200, priority = 0, weight = 0 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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20 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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21 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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22 srv = { target = "xmpp0-d.example.com", port = 5256, priority = 0, weight = 120 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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23 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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24
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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25 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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26 srv = { target = "xmpp1-a.example.com", port = 5273, priority = 1, weight = 30 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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27 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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28 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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29 srv = { target = "xmpp1-b.example.com", port = 5274, priority = 1, weight = 30 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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30 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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31
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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32 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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33 srv = { target = "xmpp2.example.com", port = 5275, priority = 2, weight = 0 };
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34 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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35 });
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36 elseif qname == "_xmpp-server._tcp.single.example.com"
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37 and (qtype or "SRV") == "SRV"
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38 and (qclass or "IN") == "IN" then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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39 cb({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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40 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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41 srv = { target = "xmpp0-a.example.com", port = 5269, priority = 0, weight = 0 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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42 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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43 });
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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44 elseif qname == "_xmpp-server._tcp.half.example.com"
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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45 and (qtype or "SRV") == "SRV"
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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46 and (qclass or "IN") == "IN" then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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47 cb({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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48 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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49 srv = { target = "xmpp0-a.example.com", port = 5269, priority = 0, weight = 0 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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50 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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51 {
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52 srv = { target = "xmpp0-b.example.com", port = 5270, priority = 0, weight = 1 };
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parents:
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53 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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54 });
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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55 elseif qtype == "A" then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
56 local l = qname:match("%-(%a)%.example.com$") or "1";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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57 local d = ("%d"):format(l:byte())
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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58 cb({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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59 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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60 a = "127.0.0."..d;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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61 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
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62 });
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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63 elseif qtype == "AAAA" then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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64 local l = qname:match("%-(%a)%.example.com$") or "1";
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parents:
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65 local d = ("%04d"):format(l:byte())
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66 cb({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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67 {
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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68 aaaa = "fdeb:9619:649e:c7d9::"..d;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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69 };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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70 });
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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71 else
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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72 cb(nil);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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73 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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74 end;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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75 };
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parents:
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76 end;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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77 };
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parents:
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78 package.loaded["net.adns"] = mock(adns);
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parents:
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79 local resolver = require "net.resolvers.service";
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80 math.randomseed(os.time());
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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81 it("works for 99% of deployments", function ()
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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82 -- Most deployments only have a single SRV record, let's make
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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83 -- sure that works okay
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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84
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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85 local expected_targets = set.new({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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86 -- xmpp0-a
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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87 "tcp4 127.0.0.97 5269";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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88 "tcp6 fdeb:9619:649e:c7d9::0097 5269";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
89 });
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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90 local received_targets = set.new({});
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parents:
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91
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parents:
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92 local r = resolver.new("single.example.com", "xmpp-server");
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parents:
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93 local done = false;
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parents:
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94 local function handle_target(...)
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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95 if ... == nil then
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parents:
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96 done = true;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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97 -- No more targets
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
98 return;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
99 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
100 received_targets:add(table.concat({ ... }, " ", 1, 3));
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
101 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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102 r:next(handle_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
diff changeset
103 while not done do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
diff changeset
104 r:next(handle_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
105 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
106
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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107 -- We should have received all expected targets, and no unexpected
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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108 -- ones:
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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109 assert.truthy(set.xor(received_targets, expected_targets):empty());
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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110 end);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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111
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
diff changeset
112 it("supports A/AAAA fallback", function ()
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parents:
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113 -- Many deployments don't have any SRV records, so we should
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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114 -- fall back to A/AAAA records instead when that is the case
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parents:
diff changeset
115
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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116 local expected_targets = set.new({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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117 -- xmpp0-a
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
118 "tcp4 127.0.0.97 5269";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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119 "tcp6 fdeb:9619:649e:c7d9::0097 5269";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
120 });
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parents:
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121 local received_targets = set.new({});
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parents:
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122
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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123 local r = resolver.new("xmpp0-a.example.com", "xmpp-server", "tcp", { default_port = 5269 });
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parents:
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124 local done = false;
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parents:
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125 local function handle_target(...)
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
diff changeset
126 if ... == nil then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
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127 done = true;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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128 -- No more targets
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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129 return;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
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130 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
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parents:
diff changeset
131 received_targets:add(table.concat({ ... }, " ", 1, 3));
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
132 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
133 r:next(handle_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
134 while not done do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
135 r:next(handle_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
136 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
137
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
138 -- We should have received all expected targets, and no unexpected
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
139 -- ones:
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
140 assert.truthy(set.xor(received_targets, expected_targets):empty());
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
141 end);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
142
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
143
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
144 it("works", function ()
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
145 local expected_targets = set.new({
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
146 -- xmpp0-a
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
147 "tcp4 127.0.0.97 5228";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
148 "tcp6 fdeb:9619:649e:c7d9::0097 5228";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
149 "tcp4 127.0.0.97 5273";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
150 "tcp6 fdeb:9619:649e:c7d9::0097 5273";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
151
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
152 -- xmpp0-b
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
153 "tcp4 127.0.0.98 5274";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
154 "tcp6 fdeb:9619:649e:c7d9::0098 5274";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
155 "tcp4 127.0.0.98 5216";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
156 "tcp6 fdeb:9619:649e:c7d9::0098 5216";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
157
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
158 -- xmpp0-c
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
159 "tcp4 127.0.0.99 5200";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
160 "tcp6 fdeb:9619:649e:c7d9::0099 5200";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
161
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
162 -- xmpp0-d
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
163 "tcp4 127.0.0.100 5256";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
164 "tcp6 fdeb:9619:649e:c7d9::0100 5256";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
165
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
166 -- xmpp2
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
167 "tcp4 127.0.0.49 5275";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
168 "tcp6 fdeb:9619:649e:c7d9::0049 5275";
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
169
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
170 });
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
171 local received_targets = set.new({});
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
172
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
173 local r = resolver.new("example.com", "xmpp-server");
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
174 local done = false;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
175 local function handle_target(...)
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
176 if ... == nil then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
177 done = true;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
178 -- No more targets
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
179 return;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
180 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
181 received_targets:add(table.concat({ ... }, " ", 1, 3));
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
182 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
183 r:next(handle_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
184 while not done do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
185 r:next(handle_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
186 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
187
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
188 -- We should have received all expected targets, and no unexpected
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
189 -- ones:
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
190 assert.truthy(set.xor(received_targets, expected_targets):empty());
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
191 end);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
192
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
193 it("balances across weights correctly #slow", function ()
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
194 -- This mimics many repeated connections to 'example.com' (mock
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
195 -- records defined above), and records the port number of the
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
196 -- first target. Therefore it (should) only return priority
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
197 -- 0 records, and the input data is constructed such that the
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
198 -- last two digits of the port number represent the percentage
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
199 -- of times that record should (on average) be picked first.
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
200
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
201 -- To prevent random test failures, we test across a handful
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
202 -- of fixed (randomly selected) seeds.
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
203 for _, seed in ipairs({ 8401877, 3943829, 7830992 }) do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
204 math.randomseed(seed);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
205
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
206 local results = {};
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
207 local function run()
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
208 local run_results = {};
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
209 local r = resolver.new("example.com", "xmpp-server");
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
210 local function record_target(...)
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
211 if ... == nil then
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
212 -- No more targets
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
213 return;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
214 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
215 run_results = { ... };
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
216 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
217 r:next(record_target);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
218 return run_results[3];
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
219 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
220
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
221 for _ = 1, 1000 do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
222 local port = run();
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
223 results[port] = (results[port] or 0) + 1;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
224 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
225
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
226 local ports = {};
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
227 for port in pairs(results) do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
228 table.insert(ports, port);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
229 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
230 table.sort(ports);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
231 for _, port in ipairs(ports) do
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
232 --print("PORT", port, tostring((results[port]/1000) * 100).."% hits (expected "..tostring(port-5200).."%)");
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
233 local hit_pct = (results[port]/1000) * 100;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
234 local expected_pct = port - 5200;
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
235 --print(hit_pct, expected_pct, math.abs(hit_pct - expected_pct));
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
236 assert.is_true(math.abs(hit_pct - expected_pct) < 5);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
237 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
238 --print("---");
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
239 end
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
240 end);
c029ddcad258 net.resolvers.service: Honour record 'weight' when picking SRV targets
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
241 end);