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12 | var http = require('http')
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13 | , res = http.OutgoingMessage.prototype;
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16 |
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17 | var setHeader = res.setHeader;
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20 |
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21 | var _renderHeaders = res._renderHeaders;
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22 |
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23 | if (res._hasConnectPatch) return;
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32 |
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33 | res.__defineGetter__('headerSent', function(){
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34 | return this._headerSent;
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35 | });
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45 |
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46 | res.setHeader = function(field, val){
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47 | var key = field.toLowerCase()
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48 | , prev;
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49 |
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50 |
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51 | if (this._headers && 'set-cookie' == key) {
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52 | if (prev = this.getHeader(field)) {
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53 | val = Array.isArray(prev)
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54 | ? prev.concat(val)
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55 | : [prev, val];
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56 | }
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57 |
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58 | } else if ('content-type' == key && this.charset) {
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59 | val += '; charset=' + this.charset;
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60 | }
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61 |
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62 | return setHeader.call(this, field, val);
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63 | };
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73 |
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74 | res._renderHeaders = function(){
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75 | this.emit('header');
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76 | return _renderHeaders.call(this);
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77 | };
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78 |
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79 | res._hasConnectPatch = true;
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