3 const FreeList = require('internal/freelist').FreeList;
4 const HTTPParser = process.binding('http_parser').HTTPParser;
6 const incoming = require('_http_incoming');
7 const IncomingMessage = incoming.IncomingMessage;
8 const readStart = incoming.readStart;
9 const readStop = incoming.readStop;
11 const debug = require('util').debuglog('http');
12 exports.debug = debug;
14 exports.CRLF = '\r\n';
15 exports.chunkExpression = /chunk/i;
16 exports.continueExpression = /100-continue/i;
17 exports.methods = HTTPParser.methods;
19 const kOnHeaders = HTTPParser.kOnHeaders | 0;
20 const kOnHeadersComplete = HTTPParser.kOnHeadersComplete | 0;
21 const kOnBody = HTTPParser.kOnBody | 0;
22 const kOnMessageComplete = HTTPParser.kOnMessageComplete | 0;
24 // Only called in the slow case where slow means
25 // that the request headers were either fragmented
26 // across multiple TCP packets or too large to be
27 // processed in a single run. This method is also
28 // called to process trailing HTTP headers.
29 function parserOnHeaders(headers, url) {
30 // Once we exceeded headers limit - stop collecting them
31 if (this.maxHeaderPairs <= 0 ||
32 this._headers.length < this.maxHeaderPairs) {
33 this._headers = this._headers.concat(headers);
38 // `headers` and `url` are set only if .onHeaders() has not been called for
40 // `url` is not set for response parsers but that's not applicable here since
41 // all our parsers are request parsers.
42 function parserOnHeadersComplete(versionMajor, versionMinor, headers, method,
43 url, statusCode, statusMessage, upgrade,
48 headers = parser._headers;
57 parser.incoming = new IncomingMessage(parser.socket);
58 parser.incoming.httpVersionMajor = versionMajor;
59 parser.incoming.httpVersionMinor = versionMinor;
60 parser.incoming.httpVersion = versionMajor + '.' + versionMinor;
61 parser.incoming.url = url;
63 var n = headers.length;
65 // If parser.maxHeaderPairs <= 0 assume that there's no limit.
66 if (parser.maxHeaderPairs > 0)
67 n = Math.min(n, parser.maxHeaderPairs);
69 parser.incoming._addHeaderLines(headers, n);
71 if (typeof method === 'number') {
73 parser.incoming.method = HTTPParser.methods[method];
76 parser.incoming.statusCode = statusCode;
77 parser.incoming.statusMessage = statusMessage;
80 parser.incoming.upgrade = upgrade;
82 var skipBody = false; // response to HEAD or CONNECT
85 // For upgraded connections and CONNECT method request, we'll emit this
86 // after parser.execute so that we can capture the first part of the new
88 skipBody = parser.onIncoming(parser.incoming, shouldKeepAlive);
94 // XXX This is a mess.
95 // TODO: http.Parser should be a Writable emits request/response events.
96 function parserOnBody(b, start, len) {
98 var stream = parser.incoming;
100 // if the stream has already been removed, then drop it.
104 var socket = stream.socket;
106 // pretend this was the result of a stream._read call.
107 if (len > 0 && !stream._dumped) {
108 var slice = b.slice(start, start + len);
109 var ret = stream.push(slice);
115 function parserOnMessageComplete() {
117 var stream = parser.incoming;
120 stream.complete = true;
121 // Emit any trailing headers.
122 var headers = parser._headers;
124 parser.incoming._addHeaderLines(headers, headers.length);
125 parser._headers = [];
129 // For emit end event
133 // force to read the next incoming message
134 readStart(parser.socket);
138 var parsers = new FreeList('parsers', 1000, function() {
139 var parser = new HTTPParser(HTTPParser.REQUEST);
141 parser._headers = [];
143 parser._consumed = false;
145 // Only called in the slow case where slow means
146 // that the request headers were either fragmented
147 // across multiple TCP packets or too large to be
148 // processed in a single run. This method is also
149 // called to process trailing HTTP headers.
150 parser[kOnHeaders] = parserOnHeaders;
151 parser[kOnHeadersComplete] = parserOnHeadersComplete;
152 parser[kOnBody] = parserOnBody;
153 parser[kOnMessageComplete] = parserOnMessageComplete;
157 exports.parsers = parsers;
160 // Free the parser and also break any links that it
161 // might have to any other things.
162 // TODO: All parser data should be attached to a
163 // single object, so that it can be easily cleaned
164 // up by doing `parser.data = {}`, which should
165 // be done in FreeList.free. `parsers.free(parser)`
166 // should be all that is needed.
167 function freeParser(parser, req, socket) {
169 parser._headers = [];
170 parser.onIncoming = null;
171 if (parser._consumed)
173 parser._consumed = false;
175 parser.socket.parser = null;
176 parser.socket = null;
177 parser.incoming = null;
178 if (parsers.free(parser) === false)
186 socket.parser = null;
189 exports.freeParser = freeParser;
193 if (this._httpMessage) this._httpMessage.emit('drain');
197 function httpSocketSetup(socket) {
198 socket.removeListener('drain', ondrain);
199 socket.on('drain', ondrain);
201 exports.httpSocketSetup = httpSocketSetup;