79   const parser = this;
80   const { socket } = parser;
83     headers = parser._headers;
84     parser._headers = [];
88     url = parser._url;
89     parser._url = '';
97   const incoming = parser.incoming = new ParserIncomingMessage(socket);
113   if (parser.maxHeaderPairs > 0)
114     n = MathMin(n, parser.maxHeaderPairs);
127   return parser.onIncoming(incoming, shouldKeepAlive);
147   const parser = this;
148   const stream = parser.incoming;
153     const headers = parser._headers;
156       parser._headers = [];
157       parser._url = '';
165   readStart(parser.socket);
170   const parser = new HTTPParser();
172   cleanParser(parser);
174   parser[kOnHeaders] = parserOnHeaders;
175   parser[kOnHeadersComplete] = parserOnHeadersComplete;
176   parser[kOnBody] = parserOnBody;
177   parser[kOnMessageComplete] = parserOnMessageComplete;
179   return parser;
182 function closeParserInstance(parser) { parser.close(); }  argument
191 function freeParser(parser, req, socket) {  argument
192   if (parser) {
193     if (parser._consumed)
194       parser.unconsume();
195     cleanParser(parser);
196     if (parsers.free(parser) === false) {
199       setImmediate(closeParserInstance, parser);
203       parser.free();
207     req.parser = null;
210     socket.parser = null;
235 function cleanParser(parser) {  argument
236   parser._headers = [];
237   parser._url = '';
238   parser.socket = null;
239   parser.incoming = null;
240   parser.outgoing = null;
241   parser.maxHeaderPairs = MAX_HEADER_PAIRS;
242   parser[kOnMessageBegin] = null;
243   parser[kOnExecute] = null;
244   parser[kOnTimeout] = null;
245   parser._consumed = false;
246   parser.onIncoming = null;
249 function prepareError(err, parser, rawPacket) {  argument
250   err.rawPacket = rawPacket || parser.getCurrentBuffer();