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23 | "use strict";
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24 |
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25 | var dgram = require('dgram'),
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26 | net = require('net'),
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27 | Packet = require('./packet'),
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28 | ServerQueue = require('./server_queue'),
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29 | Socket = require('./socket');
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30 |
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31 | var PendingRequests = function () {
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32 | this._server_queue = new ServerQueue(this, 100);
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33 | this.autopromote = false;
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34 | };
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35 |
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36 | PendingRequests.prototype.send = function (request) {
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37 | var packet;
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38 |
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39 | this._server_queue.add(request.server, request, function (socket) {
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40 | if (request.try_edns) {
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41 | packet = new edns.EDNSPacket(socket);
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42 | } else {
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43 | packet = new Packet(socket);
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44 | }
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45 | packet.header.id = request.id;
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46 | packet.header.rd = 1;
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47 | packet.question.push(request.question);
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48 | packet.send();
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49 | });
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50 | };
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51 |
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52 | PendingRequests.prototype.remove = function (request) {
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53 | if (request.server && request.id)
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54 | this._server_queue.remove(request.server, request.id);
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55 | };
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56 |
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57 | PendingRequests.prototype.handleMessage = function (server, msg, socket) {
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58 | var err, request, answer;
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59 |
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60 | answer = new Packet(socket);
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61 | answer.unpack(msg, this.autopromote);
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62 | answer = answer.promote();
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63 |
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64 | request = this._server_queue.getRequest(server, answer.header.id);
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65 | if (request)
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66 | {
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67 | this.remove(request);
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68 | request.handle(err, answer);
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69 | }
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70 | };
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71 |
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72 | module.exports = new PendingRequests();
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