Mercurial > prosody-modules

annotate misc/systemd/socket-activation.lua @ 4203:c4002aae4ad3

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mod_s2s_keepalive: Use timestamp as iq @id RFC 6120 implies that the id attribute must be unique within a stream. This should fix problems with remote servers that enforce uniqueness and don't answer duplicated ids. If it doesn't do that, then at least you can get a guesstimate at round-trip time from the difference between the result iq stanza and the timestamp it was logged without having to go look for when it was sent, or needing to keep state.
author Kim Alvefur <zash@zash.se>
date Wed, 14 Oct 2020 18:02:10 +0200
parents 3296a09b4e57
children
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3296a09b4e57 misc/systemd: Experimental files for enabling socket activation
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1 -- Monkeypatch to support socket activation
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2 --
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3 -- Requires LuaSocket after "agnostic" changes merged
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4 --
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5 -- To enable:
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6 -- RunScript "socket-activation.lua"
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7
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8 local socket = require"socket";
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9 local tcp_serv_mt = debug.getregistry()["tcp{server}"];
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10 local socket_bind = socket.bind;
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11
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12 local SD_LISTEN_FDS_START = 3;
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13
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14 local fds = tonumber(os.getenv"LISTEN_FDS") or 0;
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15
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16 if fds < SD_LISTEN_FDS_START then return; end
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17
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18 local servs = {};
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19
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20 for i = 1, fds do
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21 local serv = socket.tcp();
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22 if serv:getfd() >= 0 then
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23 return; -- This won't work, we will leak the old FD
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24 end
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25 debug.setmetatable(serv, tcp_serv_mt);
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26 serv:setfd(SD_LISTEN_FDS_START + i - 1);
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27 local ip, port = serv:getsockname();
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28 servs [ ip .. ":" .. port ] = serv;
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29 end
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30
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31 function socket.bind( ip, port, backlog )
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32 local sock = servs [ ip .. ":" .. port ];
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33 if sock then
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34 servs [ ip .. ":" .. port ] = nil;
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35 return sock;
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36 end
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37 if next(servs) == nil then
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38 -- my work here is done
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39 socket.bind = socket_bind;
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40 end
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41 return socket_bind( ip, port, backlog );
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42 end