Mercurial > prosody-modules

annotate mod_http_altconnect/mod_http_altconnect.lua @ 4877:adc6241e5d16

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mod_measure_process: Report the enforced limit The soft limit is what the kernel actually enforces, while the hard limit is is how far you can change the soft limit without privileges. Unless the process dynamically adjusts the soft limit, knowing the hard limit is not as useful as knowing the soft limit. Reporting the soft limit and the number of in-use FDs allows placing alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
author Kim Alvefur <zash@zash.se>
date Tue, 18 Jan 2022 18:55:20 +0100
parents 0a0bf87ccda6
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 "core.modulemanager";
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7 local json = require"util.json";
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8 local st = require"util.stanza";
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9 local array = require"util.array";
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10
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11 local function get_supported()
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12 local uris = array();
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13 if mm.is_loaded(module.host, "bosh") or mm.is_loaded("*", "bosh") then
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14 uris:push({ rel = "urn:xmpp:alt-connections:xbosh", href = module:http_url("bosh", "/http-bind") });
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15 end
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16 if mm.is_loaded(module.host, "websocket") or mm.is_loaded("*", "websocket") then
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17 uris:push({ rel = "urn:xmpp:alt-connections:websocket", href = module:http_url("websocket", "xmpp-websocket"):gsub("^http", "ws") });
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18 end
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19 return uris;
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20 end
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23 local function GET_xml(event)
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24 local request, response = event.request, event.response;
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25 local xrd = st.stanza("XRD", { xmlns='http://docs.oasis-open.org/ns/xri/xrd-1.0' });
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26 local uris = get_supported();
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27 for i, method in ipairs(uris) do
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28 xrd:tag("Link", method):up();
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29 end
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30 response.headers.content_type = "application/xrd+xml"
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31 response.headers.access_control_allow_origin = "*";
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32 return '<?xml version="1.0" encoding="UTF-8"?>' .. tostring(xrd);
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33 end
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35 local function GET_json(event)
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36 local request, response = event.request, event.response;
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37 local jrd = { links = get_supported() };
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38 response.headers.content_type = "application/json"
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39 response.headers.access_control_allow_origin = "*";
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40 return json.encode(jrd);
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41 end;
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42
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43 local function GET_either(event)
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44 local accept_type = event.request.headers.accept or "";
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45 if ( accept_type:find("xml") or #accept_type ) < ( accept_type:find("json") or #accept_type+1 ) then
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46 return GET_xml(event);
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47 else
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48 return GET_json(event);
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49 end
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50 end;
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52 module:provides("http", {
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53 default_path = "/.well-known";
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54 route = {
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55 ["GET /host-meta"] = GET_either;
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56 -- ["GET /host-meta.xml"] = GET_xml; -- Hmmm
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57 ["GET /host-meta.json"] = GET_json;
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58 };
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59 });