prosody
b2f9782497dd
net/connect.lua

Find changesets by keywords by author, files, the commit message, revision number or hash, or revset expression.

Software / code / prosody

Annotate

net/connect.lua @ 11481:b2f9782497dd

util.datamapper: Don't include empty unwrapped arrays Since there is no way to distinguish an empty such array from a zero-length array. Dropping it seems like the least annoying thing to do.
author Kim Alvefur <zash@zash.se>
date Wed, 24 Mar 2021 00:48:02 +0100
parent 10945:2edb72ef312a
child 11901:26406ce35e20
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
1 local server = require "net.server";
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
2 local log = require "util.logger".init("net.connect");
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
3 local new_id = require "util.id".short;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
4
10484
b13a31cea7d9 net.connect: Add some TODOs and FIXMEs
Kim Alvefur <zash@zash.se>
parents: 10452
diff changeset
5 -- TODO #1246 Happy Eyeballs
10485
913276ba0c47 net.connect: Mention RFC 6724 regression
Kim Alvefur <zash@zash.se>
parents: 10484
diff changeset
6 -- FIXME RFC 6724
10452
fa11070c2cd7 net.connect: Add some TODO comments
Kim Alvefur <zash@zash.se>
parents: 10112
diff changeset
7 -- FIXME Error propagation from resolvers doesn't work
10484
b13a31cea7d9 net.connect: Add some TODOs and FIXMEs
Kim Alvefur <zash@zash.se>
parents: 10452
diff changeset
8 -- FIXME #1428 Reuse DNS resolver object between service and basic resolver
b13a31cea7d9 net.connect: Add some TODOs and FIXMEs
Kim Alvefur <zash@zash.se>
parents: 10452
diff changeset
9 -- FIXME #1429 Close DNS resolver object when done
10452
fa11070c2cd7 net.connect: Add some TODO comments
Kim Alvefur <zash@zash.se>
parents: 10112
diff changeset
10
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
11 local pending_connection_methods = {};
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
12 local pending_connection_mt = {
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
13 __name = "pending_connection";
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
14 __index = pending_connection_methods;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
15 __tostring = function (p)
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
16 return "<pending connection "..p.id.." to "..tostring(p.target_resolver.hostname)..">";
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
17 end;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
18 };
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
19
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
20 function pending_connection_methods:log(level, message, ...)
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
21 log(level, "[pending connection %s] "..message, self.id, ...);
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
22 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
23
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
24 -- pending_connections_map[conn] = pending_connection
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
25 local pending_connections_map = {};
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
26
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
27 local pending_connection_listeners = {};
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
28
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
29 local function attempt_connection(p)
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
30 p:log("debug", "Checking for targets...");
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
31 if p.conn then
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
32 pending_connections_map[p.conn] = nil;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
33 p.conn = nil;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
34 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
35 p.target_resolver:next(function (conn_type, ip, port, extra)
8547
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
36 if not conn_type then
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
37 -- No more targets to try
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
38 p:log("debug", "No more connection targets to try");
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
39 if p.listeners.onfail then
8549
69e942c2990f net.connect: Improve error message
Matthew Wild <mwild1@gmail.com>
parents: 8548
diff changeset
40 p.listeners.onfail(p.data, p.last_error or "unable to resolve service");
8547
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
41 end
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
42 return;
5e9c87376891 net.connect: Handle case when resolver runs out of targets
Matthew Wild <mwild1@gmail.com>
parents: 8546
diff changeset
43 end
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
44 p:log("debug", "Next target to try is %s:%d", ip, port);
8548
162f75ac2693 net.connect: Handle immediate failures of server.addclient
Matthew Wild <mwild1@gmail.com>
parents: 8547
diff changeset
45 local conn, err = server.addclient(ip, port, pending_connection_listeners, p.options.pattern or "*a", p.options.sslctx, conn_type, extra);
162f75ac2693 net.connect: Handle immediate failures of server.addclient
Matthew Wild <mwild1@gmail.com>
parents: 8547
diff changeset
46 if not conn then
10112
b327f2870382 net.*: Remove tostring call from logging
Kim Alvefur <zash@zash.se>
parents: 9387
diff changeset
47 log("debug", "Connection attempt failed immediately: %s", err);
8548
162f75ac2693 net.connect: Handle immediate failures of server.addclient
Matthew Wild <mwild1@gmail.com>
parents: 8547
diff changeset
48 p.last_error = err or "unknown reason";
162f75ac2693 net.connect: Handle immediate failures of server.addclient
Matthew Wild <mwild1@gmail.com>
parents: 8547
diff changeset
49 return attempt_connection(p);
162f75ac2693 net.connect: Handle immediate failures of server.addclient
Matthew Wild <mwild1@gmail.com>
parents: 8547
diff changeset
50 end
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
51 p.conn = conn;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
52 pending_connections_map[conn] = p;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
53 end);
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
54 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
55
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
56 function pending_connection_listeners.onconnect(conn)
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
57 local p = pending_connections_map[conn];
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
58 if not p then
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
59 log("warn", "Successful connection, but unexpected! Closing.");
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
60 conn:close();
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
61 return;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
62 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
63 pending_connections_map[conn] = nil;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
64 p:log("debug", "Successfully connected");
9387
33e52f727f0f net.connect: Fix passing request table to new listener
Kim Alvefur <zash@zash.se>
parents: 9386
diff changeset
65 conn:setlistener(p.listeners, p.data);
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
66 return p.listeners.onconnect(conn);
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
67 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
68
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
69 function pending_connection_listeners.ondisconnect(conn, reason)
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
70 local p = pending_connections_map[conn];
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
71 if not p then
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
72 log("warn", "Failed connection, but unexpected!");
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
73 return;
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
74 end
8546
d66916dc318a net.connect: Track last connection error
Matthew Wild <mwild1@gmail.com>
parents: 8536
diff changeset
75 p.last_error = reason or "unknown reason";
d66916dc318a net.connect: Track last connection error
Matthew Wild <mwild1@gmail.com>
parents: 8536
diff changeset
76 p:log("debug", "Connection attempt failed: %s", p.last_error);
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
77 attempt_connection(p);
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
78 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
79
10623
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
80 local function connect(target_resolver, listeners, options, data)
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
81 local p = setmetatable({
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
82 id = new_id();
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
83 target_resolver = target_resolver;
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
84 listeners = assert(listeners);
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
85 options = options or {};
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
86 data = data;
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
87 }, pending_connection_mt);
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
88
10623
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
89 p:log("debug", "Starting connection process");
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
90 attempt_connection(p);
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
91 end
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
92
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
93 return {
10623
f51c88baeb8a Backed out changeset 44ef46e1a951 (not optimal API)
Matthew Wild <mwild1@gmail.com>
parents: 10612
diff changeset
94 connect = connect;
8531
601681acea73 net.connect: New API for outgoing connections, based on 'service resolvers'
Matthew Wild <mwild1@gmail.com>
parents:
diff changeset
95 };