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annotate plugins/mod_http_altconnect.lua @ 13966:e7c52d0b0e0d

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util.sql: Add API to start an explicit write transaction This will be used in SQLite3 to BEGIN IMMEDIATE, which attempts to acquire write locks immediately instead of when the first write statement is started. Thus it would fail faster if the write lock is already taken. Normally that should not occur but e.g. prosodyctl could take it. Investigating whether something similar is sensible in PostgreSQL, MySQL is a future task.
author Kim Alvefur <zash@zash.se>
date Mon, 19 Aug 2024 00:06:45 +0200
parents 569fae28a2f3
children
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1 -- mod_http_altconnect
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2 -- XEP-0156: Discovering Alternative XMPP Connection Methods
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3
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4 module:depends"http";
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5
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6 local mm = require "prosody.core.modulemanager";
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7 local json = require"prosody.util.json";
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8 local st = require"prosody.util.stanza";
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9 local array = require"prosody.util.array";
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10
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11 local advertise_bosh = module:get_option_boolean("advertise_bosh", true);
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12 local advertise_websocket = module:get_option_boolean("advertise_websocket", true);
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13
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14 local function get_supported()
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15 local uris = array();
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16 if advertise_bosh and (mm.is_loaded(module.host, "bosh") or mm.is_loaded("*", "bosh")) then
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17 uris:push({ rel = "urn:xmpp:alt-connections:xbosh", href = module:http_url("bosh", "/http-bind") });
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18 end
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19 if advertise_websocket and (mm.is_loaded(module.host, "websocket") or mm.is_loaded("*", "websocket")) then
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20 uris:push({ rel = "urn:xmpp:alt-connections:websocket", href = module:http_url("websocket", "xmpp-websocket"):gsub("^http", "ws") });
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21 end
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22 return uris;
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23 end
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26 local function GET_xml(event)
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27 local response = event.response;
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28 local xrd = st.stanza("XRD", { xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0' });
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29 local uris = get_supported();
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30 for _, method in ipairs(uris) do
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31 xrd:tag("Link", method):up();
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32 end
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33 response.headers.content_type = "application/xrd+xml"
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34 response.headers.access_control_allow_origin = "*";
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35 return '<?xml version="1.0" encoding="UTF-8"?>' .. tostring(xrd);
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36 end
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37
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38 local function GET_json(event)
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39 local response = event.response;
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40 local jrd = { links = get_supported() };
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41 response.headers.content_type = "application/json"
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42 response.headers.access_control_allow_origin = "*";
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43 return json.encode(jrd);
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44 end;
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45
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46 module:provides("http", {
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47 default_path = "/.well-known";
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48 route = {
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49 ["GET /host-meta"] = GET_xml;
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50 ["GET /host-meta.json"] = GET_json;
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51 };
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52 });