Sun, 05 Jul 2009 11:59:51 +0500
mod_presence: Eliminated a jid_split
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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1 | local server = require "net.server"; |
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net.adns: Load the correct dns lib
Matthew Wild <mwild1@gmail.com>
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2 | local dns = require "net.dns"; |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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3 | |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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4 | local log = require "util.logger".init("adns"); |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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5 | |
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net.adns: Catch errors in DNS response callbacks
Matthew Wild <mwild1@gmail.com>
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6 | local coroutine, tostring, pcall = coroutine, tostring, pcall; |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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7 | |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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8 | module "adns" |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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9 | |
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net.adns: Add helper module for performing non-blocking DNS lookups
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10 | function lookup(handler, qname, qtype, qclass) |
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net.adns: Call handler for records already cached
Matthew Wild <mwild1@gmail.com>
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11 | return coroutine.wrap(function (peek) |
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12 | if peek then |
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13 | log("debug", "Records for %s already cached, using those...", qname); |
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14 | handler(peek); |
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15 | return; |
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16 | end |
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17 | log("debug", "Records for %s not in cache, sending query (%s)...", qname, tostring(coroutine.running())); |
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net.adns: Add helper module for performing non-blocking DNS lookups
Matthew Wild <mwild1@gmail.com>
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18 | dns.query(qname, qtype, qclass); |
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net.adns: Add support for cancelling a non-blocking lookup, optionally calling the handler
Matthew Wild <mwild1@gmail.com>
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19 | coroutine.yield({ qclass or "IN", qtype or "A", qname, coroutine.running()}); -- Wait for reply |
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20 | log("debug", "Reply for %s (%s)", qname, tostring(coroutine.running())); |
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net.adns: Catch errors in DNS response callbacks
Matthew Wild <mwild1@gmail.com>
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21 | local ok, err = pcall(handler, dns.peek(qname, qtype, qclass)); |
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22 | if not ok then |
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23 | log("debug", "Error in DNS response handler: %s", tostring(err)); |
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24 | end |
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25 | end)(dns.peek(qname, qtype, qclass)); |
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26 | end |
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27 | |
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28 | function cancel(handle, call_handler) |
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29 | log("warn", "Cancelling DNS lookup for %s", tostring(handle[3])); |
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30 | dns.cancel(handle); |
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31 | if call_handler then |
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32 | coroutine.resume(handle[4]); |
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33 | end |
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34 | end |
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35 | |
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36 | function new_async_socket(sock) |
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37 | local newconn = {}; |
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38 | local listener = {}; |
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39 | function listener.incoming(conn, data) |
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40 | dns.feed(sock, data); |
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41 | end |
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42 | function listener.disconnect() |
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43 | end |
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44 | newconn.handler, newconn._socket = server.wrapclient(sock, "dns", 53, listener); |
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45 | newconn.handler.settimeout = function () end |
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Matthew Wild <mwild1@gmail.com>
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46 | newconn.handler.setsockname = function (_, ...) return sock:setsockname(...); end |
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net.adns: Set new send in net.server after 'connecting UDP' socket
Matthew Wild <mwild1@gmail.com>
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47 | newconn.handler.setpeername = function (_, ...) local ret = sock:setpeername(...); _.setsend(sock.send); return ret; end |
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48 | newconn.handler.connect = function (_, ...) return sock:connect(...) end |
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net.adns: Flush buffer after sending DNS request
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49 | newconn.handler.send = function (_, data) _.write(data); return _.sendbuffer(); end |
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50 | return newconn.handler; |
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51 | end |
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52 | |
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53 | dns:socket_wrapper_set(new_async_socket); |
872 | 54 | |
55 | return _M; |