1 // Copyright Joyent, Inc. and other Node contributors.
3 // Permission is hereby granted, free of charge, to any person obtaining a
4 // copy of this software and associated documentation files (the
5 // "Software"), to deal in the Software without restriction, including
6 // without limitation the rights to use, copy, modify, merge, publish,
7 // distribute, sublicense, and/or sell copies of the Software, and to permit
8 // persons to whom the Software is furnished to do so, subject to the
9 // following conditions:
11 // The above copyright notice and this permission notice shall be included
12 // in all copies or substantial portions of the Software.
14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
15 // OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
17 // NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
18 // DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
19 // OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
20 // USE OR OTHER DEALINGS IN THE SOFTWARE.
24 var FreeList = require('freelist').FreeList;
25 var HTTPParser = process.binding('http_parser').HTTPParser;
27 var incoming = require('_http_incoming');
28 var IncomingMessage = incoming.IncomingMessage;
29 var readStart = incoming.readStart;
30 var readStop = incoming.readStop;
32 var isNumber = require('util').isNumber;
33 var debug = require('util').debuglog('http');
34 exports.debug = debug;
36 exports.CRLF = '\r\n';
37 exports.chunkExpression = /chunk/i;
38 exports.continueExpression = /100-continue/i;
39 exports.methods = HTTPParser.methods;
41 var kOnHeaders = HTTPParser.kOnHeaders | 0;
42 var kOnHeadersComplete = HTTPParser.kOnHeadersComplete | 0;
43 var kOnBody = HTTPParser.kOnBody | 0;
44 var kOnMessageComplete = HTTPParser.kOnMessageComplete | 0;
46 // Only called in the slow case where slow means
47 // that the request headers were either fragmented
48 // across multiple TCP packets or too large to be
49 // processed in a single run. This method is also
50 // called to process trailing HTTP headers.
51 function parserOnHeaders(headers, url) {
52 // Once we exceeded headers limit - stop collecting them
53 if (this.maxHeaderPairs <= 0 ||
54 this._headers.length < this.maxHeaderPairs) {
55 this._headers = this._headers.concat(headers);
60 // info.headers and info.url are set only if .onHeaders()
61 // has not been called for this request.
63 // info.url is not set for response parsers but that's not
64 // applicable here since all our parsers are request parsers.
65 function parserOnHeadersComplete(info) {
66 debug('parserOnHeadersComplete', info);
68 var headers = info.headers;
72 headers = parser._headers;
81 parser.incoming = new IncomingMessage(parser.socket);
82 parser.incoming.httpVersionMajor = info.versionMajor;
83 parser.incoming.httpVersionMinor = info.versionMinor;
84 parser.incoming.httpVersion = info.versionMajor + '.' + info.versionMinor;
85 parser.incoming.url = url;
87 var n = headers.length;
89 // If parser.maxHeaderPairs <= 0 - assume that there're no limit
90 if (parser.maxHeaderPairs > 0) {
91 n = Math.min(n, parser.maxHeaderPairs);
94 parser.incoming._addHeaderLines(headers, n);
96 if (isNumber(info.method)) {
98 parser.incoming.method = HTTPParser.methods[info.method];
101 parser.incoming.statusCode = info.statusCode;
102 parser.incoming.statusMessage = info.statusMessage;
105 parser.incoming.upgrade = info.upgrade;
107 var skipBody = false; // response to HEAD or CONNECT
110 // For upgraded connections and CONNECT method request,
111 // we'll emit this after parser.execute
112 // so that we can capture the first part of the new protocol
113 skipBody = parser.onIncoming(parser.incoming, info.shouldKeepAlive);
119 // XXX This is a mess.
120 // TODO: http.Parser should be a Writable emits request/response events.
121 function parserOnBody(b, start, len) {
123 var stream = parser.incoming;
125 // if the stream has already been removed, then drop it.
129 var socket = stream.socket;
131 // pretend this was the result of a stream._read call.
132 if (len > 0 && !stream._dumped) {
133 var slice = b.slice(start, start + len);
134 var ret = stream.push(slice);
140 function parserOnMessageComplete() {
142 var stream = parser.incoming;
145 stream.complete = true;
146 // Emit any trailing headers.
147 var headers = parser._headers;
149 parser.incoming._addHeaderLines(headers, headers.length);
150 parser._headers = [];
155 // For upgraded connections, also emit this after parser.execute
159 if (stream && !parser.incoming._pendings.length) {
160 // For emit end event
164 // force to read the next incoming message
165 readStart(parser.socket);
169 var parsers = new FreeList('parsers', 1000, function() {
170 var parser = new HTTPParser(HTTPParser.REQUEST);
172 parser._headers = [];
175 // Only called in the slow case where slow means
176 // that the request headers were either fragmented
177 // across multiple TCP packets or too large to be
178 // processed in a single run. This method is also
179 // called to process trailing HTTP headers.
180 parser[kOnHeaders] = parserOnHeaders;
181 parser[kOnHeadersComplete] = parserOnHeadersComplete;
182 parser[kOnBody] = parserOnBody;
183 parser[kOnMessageComplete] = parserOnMessageComplete;
187 exports.parsers = parsers;
190 // Free the parser and also break any links that it
191 // might have to any other things.
192 // TODO: All parser data should be attached to a
193 // single object, so that it can be easily cleaned
194 // up by doing `parser.data = {}`, which should
195 // be done in FreeList.free. `parsers.free(parser)`
196 // should be all that is needed.
197 function freeParser(parser, req, socket) {
199 parser._headers = [];
200 parser.onIncoming = null;
202 parser.socket.parser = null;
203 parser.socket = null;
204 parser.incoming = null;
205 if (parsers.free(parser) === false)
213 socket.parser = null;
216 exports.freeParser = freeParser;
220 if (this._httpMessage) this._httpMessage.emit('drain');
224 function httpSocketSetup(socket) {
225 socket.removeListener('drain', ondrain);
226 socket.on('drain', ondrain);
228 exports.httpSocketSetup = httpSocketSetup;