mirror of https://github.com/lukechilds/node.git
Timothy J Fontaine
12 years ago
committed by
Ben Noordhuis
Ben Noordhuis
3 changed files with 213 additions and 180 deletions
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// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var FreeList = require('freelist').FreeList; |
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var HTTPParser = process.binding('http_parser').HTTPParser; |
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var incoming = require('_http_incoming'); |
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var IncomingMessage = incoming.IncomingMessage; |
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var readStart = incoming.readStart; |
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var readStop = incoming.readStop; |
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// Only called in the slow case where slow means
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// that the request headers were either fragmented
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// across multiple TCP packets or too large to be
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// processed in a single run. This method is also
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// called to process trailing HTTP headers.
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function parserOnHeaders(headers, url) { |
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// Once we exceeded headers limit - stop collecting them
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if (this.maxHeaderPairs <= 0 || |
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this._headers.length < this.maxHeaderPairs) { |
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this._headers = this._headers.concat(headers); |
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} |
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this._url += url; |
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} |
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// info.headers and info.url are set only if .onHeaders()
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// has not been called for this request.
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//
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// info.url is not set for response parsers but that's not
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// applicable here since all our parsers are request parsers.
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function parserOnHeadersComplete(info) { |
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var parser = this; |
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var headers = info.headers; |
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var url = info.url; |
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if (!headers) { |
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headers = parser._headers; |
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parser._headers = []; |
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} |
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if (!url) { |
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url = parser._url; |
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parser._url = ''; |
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} |
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parser.incoming = new IncomingMessage(parser.socket); |
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parser.incoming.httpVersionMajor = info.versionMajor; |
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parser.incoming.httpVersionMinor = info.versionMinor; |
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parser.incoming.httpVersion = info.versionMajor + '.' + info.versionMinor; |
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parser.incoming.url = url; |
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var n = headers.length; |
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// If parser.maxHeaderPairs <= 0 - assume that there're no limit
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if (parser.maxHeaderPairs > 0) { |
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n = Math.min(n, parser.maxHeaderPairs); |
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} |
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for (var i = 0; i < n; i += 2) { |
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var k = headers[i]; |
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var v = headers[i + 1]; |
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parser.incoming._addHeaderLine(k, v); |
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} |
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if (info.method) { |
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// server only
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parser.incoming.method = info.method; |
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} else { |
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// client only
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parser.incoming.statusCode = info.statusCode; |
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// CHECKME dead code? we're always a request parser
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} |
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parser.incoming.upgrade = info.upgrade; |
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var skipBody = false; // response to HEAD or CONNECT
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if (!info.upgrade) { |
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// For upgraded connections and CONNECT method request,
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// we'll emit this after parser.execute
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// so that we can capture the first part of the new protocol
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skipBody = parser.onIncoming(parser.incoming, info.shouldKeepAlive); |
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} |
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return skipBody; |
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} |
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// XXX This is a mess.
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// TODO: http.Parser should be a Writable emits request/response events.
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function parserOnBody(b, start, len) { |
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var parser = this; |
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var stream = parser.incoming; |
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// if the stream has already been removed, then drop it.
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if (!stream) |
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return; |
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var socket = stream.socket; |
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// pretend this was the result of a stream._read call.
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if (len > 0 && !stream._dumped) { |
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var slice = b.slice(start, start + len); |
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var ret = stream.push(slice); |
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if (!ret) |
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readStop(socket); |
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} |
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} |
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function parserOnMessageComplete() { |
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var parser = this; |
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var stream = parser.incoming; |
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if (stream) { |
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stream.complete = true; |
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// Emit any trailing headers.
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var headers = parser._headers; |
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if (headers) { |
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for (var i = 0, n = headers.length; i < n; i += 2) { |
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var k = headers[i]; |
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var v = headers[i + 1]; |
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parser.incoming._addHeaderLine(k, v); |
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} |
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parser._headers = []; |
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parser._url = ''; |
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} |
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if (!stream.upgrade) |
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// For upgraded connections, also emit this after parser.execute
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stream.push(null); |
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} |
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if (stream && !parser.incoming._pendings.length) { |
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// For emit end event
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stream.push(null); |
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} |
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if (parser.socket.readable) { |
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// force to read the next incoming message
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readStart(parser.socket); |
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} |
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} |
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var parsers = new FreeList('parsers', 1000, function() { |
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var parser = new HTTPParser(HTTPParser.REQUEST); |
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parser._headers = []; |
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parser._url = ''; |
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// Only called in the slow case where slow means
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// that the request headers were either fragmented
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// across multiple TCP packets or too large to be
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// processed in a single run. This method is also
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// called to process trailing HTTP headers.
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parser.onHeaders = parserOnHeaders; |
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parser.onHeadersComplete = parserOnHeadersComplete; |
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parser.onBody = parserOnBody; |
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parser.onMessageComplete = parserOnMessageComplete; |
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return parser; |
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}); |
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exports.parsers = parsers; |
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// Free the parser and also break any links that it
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// might have to any other things.
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// TODO: All parser data should be attached to a
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// single object, so that it can be easily cleaned
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// up by doing `parser.data = {}`, which should
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// be done in FreeList.free. `parsers.free(parser)`
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// should be all that is needed.
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function freeParser(parser, req) { |
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if (parser) { |
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parser._headers = []; |
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parser.onIncoming = null; |
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if (parser.socket) { |
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parser.socket.onend = null; |
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parser.socket.ondata = null; |
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parser.socket.parser = null; |
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} |
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parser.socket = null; |
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parser.incoming = null; |
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parsers.free(parser); |
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parser = null; |
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} |
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if (req) { |
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req.parser = null; |
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} |
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} |
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exports.freeParser = freeParser; |
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