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13883x 13883x 13883x 1x 1x 1x 1x 13883x 4x 4x 4x 2x 2x 2x 2x 2x 2x 1x 1x 1x 1x 1x 4x 13883x 13905x 13905x 13900x 13900x 13899x 13899x 13919x 12x 17097x 17097x 17097x 397x 17097x 17097x 17097x 12x 2302x 2302x 2302x 2302x 2302x 2302x 2302x 2302x 3x 3x 3x 2299x 2302x 38x 38x 38x 2302x 12x 44x 44x 41x 41x 41x 44x 12x 18x 18x 18x 18x 18x 18x 18x 18x 18x 12x 6780x 6780x 13295x 13295x 13295x 11x 11x 11x 11x 11x 13284x 13295x 13295x 13284x 13284x 6780x 6780x 12x 12x 12x 12x 12x 12x 12x 12x 12x 12x | // Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const {
ArrayIsArray,
Error,
ObjectKeys,
ObjectSetPrototypeOf,
RegExpPrototypeExec,
ReflectApply,
Symbol,
SymbolFor,
} = primordials;
const net = require('net');
const EE = require('events');
const assert = require('internal/assert');
const {
parsers,
freeParser,
continueExpression,
chunkExpression,
kIncomingMessage,
HTTPParser,
isLenient,
_checkInvalidHeaderChar: checkInvalidHeaderChar,
prepareError,
} = require('_http_common');
const { ConnectionsList } = internalBinding('http_parser');
const {
kUniqueHeaders,
parseUniqueHeadersOption,
OutgoingMessage
} = require('_http_outgoing');
const {
kOutHeaders,
kNeedDrain,
} = require('internal/http');
const {
defaultTriggerAsyncIdScope,
getOrSetAsyncId
} = require('internal/async_hooks');
const { IncomingMessage } = require('_http_incoming');
const {
connResetException,
codes
} = require('internal/errors');
const {
ERR_HTTP_REQUEST_TIMEOUT,
ERR_HTTP_HEADERS_SENT,
ERR_HTTP_INVALID_STATUS_CODE,
ERR_HTTP_SOCKET_ENCODING,
ERR_INVALID_ARG_TYPE,
ERR_INVALID_ARG_VALUE,
ERR_INVALID_CHAR
} = codes;
const {
validateInteger,
validateBoolean
} = require('internal/validators');
const Buffer = require('buffer').Buffer;
const {
DTRACE_HTTP_SERVER_REQUEST,
DTRACE_HTTP_SERVER_RESPONSE
} = require('internal/dtrace');
const { setInterval, clearInterval } = require('timers');
let debug = require('internal/util/debuglog').debuglog('http', (fn) => {
debug = fn;
});
const dc = require('diagnostics_channel');
const onRequestStartChannel = dc.channel('http.server.request.start');
const onResponseFinishChannel = dc.channel('http.server.response.finish');
const kServerResponse = Symbol('ServerResponse');
const kServerResponseStatistics = Symbol('ServerResponseStatistics');
const {
hasObserver,
startPerf,
stopPerf,
} = require('internal/perf/observe');
const STATUS_CODES = {
100: 'Continue', // RFC 7231 6.2.1
101: 'Switching Protocols', // RFC 7231 6.2.2
102: 'Processing', // RFC 2518 10.1 (obsoleted by RFC 4918)
103: 'Early Hints', // RFC 8297 2
200: 'OK', // RFC 7231 6.3.1
201: 'Created', // RFC 7231 6.3.2
202: 'Accepted', // RFC 7231 6.3.3
203: 'Non-Authoritative Information', // RFC 7231 6.3.4
204: 'No Content', // RFC 7231 6.3.5
205: 'Reset Content', // RFC 7231 6.3.6
206: 'Partial Content', // RFC 7233 4.1
207: 'Multi-Status', // RFC 4918 11.1
208: 'Already Reported', // RFC 5842 7.1
226: 'IM Used', // RFC 3229 10.4.1
300: 'Multiple Choices', // RFC 7231 6.4.1
301: 'Moved Permanently', // RFC 7231 6.4.2
302: 'Found', // RFC 7231 6.4.3
303: 'See Other', // RFC 7231 6.4.4
304: 'Not Modified', // RFC 7232 4.1
305: 'Use Proxy', // RFC 7231 6.4.5
307: 'Temporary Redirect', // RFC 7231 6.4.7
308: 'Permanent Redirect', // RFC 7238 3
400: 'Bad Request', // RFC 7231 6.5.1
401: 'Unauthorized', // RFC 7235 3.1
402: 'Payment Required', // RFC 7231 6.5.2
403: 'Forbidden', // RFC 7231 6.5.3
404: 'Not Found', // RFC 7231 6.5.4
405: 'Method Not Allowed', // RFC 7231 6.5.5
406: 'Not Acceptable', // RFC 7231 6.5.6
407: 'Proxy Authentication Required', // RFC 7235 3.2
408: 'Request Timeout', // RFC 7231 6.5.7
409: 'Conflict', // RFC 7231 6.5.8
410: 'Gone', // RFC 7231 6.5.9
411: 'Length Required', // RFC 7231 6.5.10
412: 'Precondition Failed', // RFC 7232 4.2
413: 'Payload Too Large', // RFC 7231 6.5.11
414: 'URI Too Long', // RFC 7231 6.5.12
415: 'Unsupported Media Type', // RFC 7231 6.5.13
416: 'Range Not Satisfiable', // RFC 7233 4.4
417: 'Expectation Failed', // RFC 7231 6.5.14
418: 'I\'m a Teapot', // RFC 7168 2.3.3
421: 'Misdirected Request', // RFC 7540 9.1.2
422: 'Unprocessable Entity', // RFC 4918 11.2
423: 'Locked', // RFC 4918 11.3
424: 'Failed Dependency', // RFC 4918 11.4
425: 'Too Early', // RFC 8470 5.2
426: 'Upgrade Required', // RFC 2817 and RFC 7231 6.5.15
428: 'Precondition Required', // RFC 6585 3
429: 'Too Many Requests', // RFC 6585 4
431: 'Request Header Fields Too Large', // RFC 6585 5
451: 'Unavailable For Legal Reasons', // RFC 7725 3
500: 'Internal Server Error', // RFC 7231 6.6.1
501: 'Not Implemented', // RFC 7231 6.6.2
502: 'Bad Gateway', // RFC 7231 6.6.3
503: 'Service Unavailable', // RFC 7231 6.6.4
504: 'Gateway Timeout', // RFC 7231 6.6.5
505: 'HTTP Version Not Supported', // RFC 7231 6.6.6
506: 'Variant Also Negotiates', // RFC 2295 8.1
507: 'Insufficient Storage', // RFC 4918 11.5
508: 'Loop Detected', // RFC 5842 7.2
509: 'Bandwidth Limit Exceeded',
510: 'Not Extended', // RFC 2774 7
511: 'Network Authentication Required' // RFC 6585 6
};
const kOnExecute = HTTPParser.kOnExecute | 0;
const kOnTimeout = HTTPParser.kOnTimeout | 0;
const kLenientAll = HTTPParser.kLenientAll | 0;
const kLenientNone = HTTPParser.kLenientNone | 0;
const kConnections = Symbol('http.server.connections');
const kConnectionsCheckingInterval = Symbol('http.server.connectionsCheckingInterval');
class HTTPServerAsyncResource {
constructor(type, socket) {
this.type = type;
this.socket = socket;
}
}
function ServerResponse(req) {
OutgoingMessage.call(this);
if (req.method === 'HEAD') this._hasBody = false;
this.req = req;
this.sendDate = true;
this._sent100 = false;
this._expect_continue = false;
if (req.httpVersionMajor < 1 || req.httpVersionMinor < 1) {
this.useChunkedEncodingByDefault = RegExpPrototypeExec(chunkExpression,
req.headers.te) !== null;
this.shouldKeepAlive = false;
}
if (hasObserver('http')) {
startPerf(this, kServerResponseStatistics, {
type: 'http',
name: 'HttpRequest',
detail: {
req: {
method: req.method,
url: req.url,
headers: req.headers,
},
},
});
}
}
ObjectSetPrototypeOf(ServerResponse.prototype, OutgoingMessage.prototype);
ObjectSetPrototypeOf(ServerResponse, OutgoingMessage);
ServerResponse.prototype._finish = function _finish() {
DTRACE_HTTP_SERVER_RESPONSE(this.socket);
if (this[kServerResponseStatistics] && hasObserver('http')) {
stopPerf(this, kServerResponseStatistics, {
detail: {
res: {
statusCode: this.statusCode,
statusMessage: this.statusMessage,
headers: typeof this.getHeaders === 'function' ? this.getHeaders() : {},
},
},
});
}
OutgoingMessage.prototype._finish.call(this);
};
ServerResponse.prototype.statusCode = 200;
ServerResponse.prototype.statusMessage = undefined;
function onServerResponseClose() {
// EventEmitter.emit makes a copy of the 'close' listeners array before
// calling the listeners. detachSocket() unregisters onServerResponseClose
// but if detachSocket() is called, directly or indirectly, by a 'close'
// listener, onServerResponseClose is still in that copy of the listeners
// array. That is, in the example below, b still gets called even though
// it's been removed by a:
//
// var EventEmitter = require('events');
// var obj = new EventEmitter();
// obj.on('event', a);
// obj.on('event', b);
// function a() { obj.removeListener('event', b) }
// function b() { throw "BAM!" }
// obj.emit('event'); // throws
//
// Ergo, we need to deal with stale 'close' events and handle the case
// where the ServerResponse object has already been deconstructed.
// Fortunately, that requires only a single if check. :-)
if (this._httpMessage) {
emitCloseNT(this._httpMessage);
}
}
ServerResponse.prototype.assignSocket = function assignSocket(socket) {
assert(!socket._httpMessage);
socket._httpMessage = this;
socket.on('close', onServerResponseClose);
this.socket = socket;
this.emit('socket', socket);
this._flush();
};
ServerResponse.prototype.detachSocket = function detachSocket(socket) {
assert(socket._httpMessage === this);
socket.removeListener('close', onServerResponseClose);
socket._httpMessage = null;
this.socket = null;
};
ServerResponse.prototype.writeContinue = function writeContinue(cb) {
this._writeRaw('HTTP/1.1 100 Continue\r\n\r\n', 'ascii', cb);
this._sent100 = true;
};
ServerResponse.prototype.writeProcessing = function writeProcessing(cb) {
this._writeRaw('HTTP/1.1 102 Processing\r\n\r\n', 'ascii', cb);
};
ServerResponse.prototype._implicitHeader = function _implicitHeader() {
this.writeHead(this.statusCode);
};
ServerResponse.prototype.writeHead = writeHead;
function writeHead(statusCode, reason, obj) {
const originalStatusCode = statusCode;
statusCode |= 0;
if (statusCode < 100 || statusCode > 999) {
throw new ERR_HTTP_INVALID_STATUS_CODE(originalStatusCode);
}
if (typeof reason === 'string') {
// writeHead(statusCode, reasonPhrase[, headers])
this.statusMessage = reason;
} else {
// writeHead(statusCode[, headers])
if (!this.statusMessage)
this.statusMessage = STATUS_CODES[statusCode] || 'unknown';
obj = reason;
}
this.statusCode = statusCode;
let headers;
if (this[kOutHeaders]) {
// Slow-case: when progressive API and header fields are passed.
let k;
if (ArrayIsArray(obj)) {
if (obj.length % 2 !== 0) {
throw new ERR_INVALID_ARG_VALUE('headers', obj);
}
for (let n = 0; n < obj.length; n += 2) {
k = obj[n + 0];
if (k) this.setHeader(k, obj[n + 1]);
}
} else if (obj) {
const keys = ObjectKeys(obj);
// Retain for(;;) loop for performance reasons
// Refs: https://github.com/nodejs/node/pull/30958
for (let i = 0; i < keys.length; i++) {
k = keys[i];
if (k) this.setHeader(k, obj[k]);
}
}
if (k === undefined && this._header) {
throw new ERR_HTTP_HEADERS_SENT('render');
}
// Only progressive api is used
headers = this[kOutHeaders];
} else {
// Only writeHead() called
headers = obj;
}
if (checkInvalidHeaderChar(this.statusMessage))
throw new ERR_INVALID_CHAR('statusMessage');
const statusLine = `HTTP/1.1 ${statusCode} ${this.statusMessage}\r\n`;
if (statusCode === 204 || statusCode === 304 ||
(statusCode >= 100 && statusCode <= 199)) {
// RFC 2616, 10.2.5:
// The 204 response MUST NOT include a message-body, and thus is always
// terminated by the first empty line after the header fields.
// RFC 2616, 10.3.5:
// The 304 response MUST NOT contain a message-body, and thus is always
// terminated by the first empty line after the header fields.
// RFC 2616, 10.1 Informational 1xx:
// This class of status code indicates a provisional response,
// consisting only of the Status-Line and optional headers, and is
// terminated by an empty line.
this._hasBody = false;
}
// Don't keep alive connections where the client expects 100 Continue
// but we sent a final status; they may put extra bytes on the wire.
if (this._expect_continue && !this._sent100) {
this.shouldKeepAlive = false;
}
this._storeHeader(statusLine, headers);
return this;
}
// Docs-only deprecated: DEP0063
ServerResponse.prototype.writeHeader = ServerResponse.prototype.writeHead;
function storeHTTPOptions(options) {
this[kIncomingMessage] = options.IncomingMessage || IncomingMessage;
this[kServerResponse] = options.ServerResponse || ServerResponse;
const maxHeaderSize = options.maxHeaderSize;
if (maxHeaderSize !== undefined)
validateInteger(maxHeaderSize, 'maxHeaderSize', 0);
this.maxHeaderSize = maxHeaderSize;
const insecureHTTPParser = options.insecureHTTPParser;
if (insecureHTTPParser !== undefined)
validateBoolean(insecureHTTPParser, 'options.insecureHTTPParser');
this.insecureHTTPParser = insecureHTTPParser;
if (options.noDelay === undefined)
options.noDelay = true;
const requestTimeout = options.requestTimeout;
if (requestTimeout !== undefined) {
validateInteger(requestTimeout, 'requestTimeout', 0);
this.requestTimeout = requestTimeout;
} else {
this.requestTimeout = 300_000; // 5 minutes
}
const headersTimeout = options.headersTimeout;
if (headersTimeout !== undefined) {
validateInteger(headersTimeout, 'headersTimeout', 0);
this.headersTimeout = headersTimeout;
} else {
this.headersTimeout = 60_000; // 60 seconds
}
if (this.requestTimeout > 0 && this.headersTimeout > 0 && this.headersTimeout >= this.requestTimeout) {
throw new codes.ERR_OUT_OF_RANGE('headersTimeout', '>= requestTimeout', headersTimeout);
}
const keepAliveTimeout = options.keepAliveTimeout;
if (keepAliveTimeout !== undefined) {
validateInteger(keepAliveTimeout, 'keepAliveTimeout', 0);
this.keepAliveTimeout = keepAliveTimeout;
} else {
this.keepAliveTimeout = 5_000; // 5 seconds;
}
const connectionsCheckingInterval = options.connectionsCheckingInterval;
if (connectionsCheckingInterval !== undefined) {
validateInteger(connectionsCheckingInterval, 'connectionsCheckingInterval', 0);
this.connectionsCheckingInterval = connectionsCheckingInterval;
} else {
this.connectionsCheckingInterval = 30_000; // 30 seconds
}
}
function setupConnectionsTracking(server) {
// Start connection handling
server[kConnections] = new ConnectionsList();
// This checker is started without checking whether any headersTimeout or requestTimeout is non zero
// otherwise it would not be started if such timeouts are modified after createServer.
server[kConnectionsCheckingInterval] =
setInterval(checkConnections.bind(server), server.connectionsCheckingInterval).unref();
}
function Server(options, requestListener) {
if (!(this instanceof Server)) return new Server(options, requestListener);
if (typeof options === 'function') {
requestListener = options;
options = {};
} else if (options == null || typeof options === 'object') {
options = { ...options };
} else {
throw new ERR_INVALID_ARG_TYPE('options', 'object', options);
}
storeHTTPOptions.call(this, options);
net.Server.call(
this,
{ allowHalfOpen: true, noDelay: options.noDelay,
keepAlive: options.keepAlive,
keepAliveInitialDelay: options.keepAliveInitialDelay });
if (requestListener) {
this.on('request', requestListener);
}
// Similar option to this. Too lazy to write my own docs.
// http://www.squid-cache.org/Doc/config/half_closed_clients/
// https://wiki.squid-cache.org/SquidFaq/InnerWorkings#What_is_a_half-closed_filedescriptor.3F
this.httpAllowHalfOpen = false;
this.on('connection', connectionListener);
this.timeout = 0;
this.maxHeadersCount = null;
this.maxRequestsPerSocket = 0;
setupConnectionsTracking(this);
this[kUniqueHeaders] = parseUniqueHeadersOption(options.uniqueHeaders);
}
ObjectSetPrototypeOf(Server.prototype, net.Server.prototype);
ObjectSetPrototypeOf(Server, net.Server);
Server.prototype.close = function() {
this.closeIdleConnections();
clearInterval(this[kConnectionsCheckingInterval]);
ReflectApply(net.Server.prototype.close, this, arguments);
};
Server.prototype.closeAllConnections = function() {
const connections = this[kConnections].all();
for (let i = 0, l = connections.length; i < l; i++) {
connections[i].socket.destroy();
}
};
Server.prototype.closeIdleConnections = function() {
const connections = this[kConnections].idle();
for (let i = 0, l = connections.length; i < l; i++) {
connections[i].socket.destroy();
}
};
Server.prototype.setTimeout = function setTimeout(msecs, callback) {
this.timeout = msecs;
if (callback)
this.on('timeout', callback);
return this;
};
Server.prototype[EE.captureRejectionSymbol] = function(err, event, ...args) {
switch (event) {
case 'request': {
const { 1: res } = args;
if (!res.headersSent && !res.writableEnded) {
// Don't leak headers.
const names = res.getHeaderNames();
for (let i = 0; i < names.length; i++) {
res.removeHeader(names[i]);
}
res.statusCode = 500;
res.end(STATUS_CODES[500]);
} else {
res.destroy();
}
break;
}
default:
net.Server.prototype[SymbolFor('nodejs.rejection')]
.apply(this, arguments);
}
};
function checkConnections() {
if (this.headersTimeout === 0 && this.requestTimeout === 0) {
return;
}
const expired = this[kConnections].expired(this.headersTimeout, this.requestTimeout);
for (let i = 0; i < expired.length; i++) {
const socket = expired[i].socket;
if (socket) {
onRequestTimeout(socket);
}
}
}
function connectionListener(socket) {
defaultTriggerAsyncIdScope(
getOrSetAsyncId(socket), connectionListenerInternal, this, socket
);
}
function connectionListenerInternal(server, socket) {
debug('SERVER new http connection');
// Ensure that the server property of the socket is correctly set.
// See https://github.com/nodejs/node/issues/13435
socket.server = server;
// If the user has added a listener to the server,
// request, or response, then it's their responsibility.
// otherwise, destroy on timeout by default
if (server.timeout && typeof socket.setTimeout === 'function')
socket.setTimeout(server.timeout);
socket.on('timeout', socketOnTimeout);
const parser = parsers.alloc();
const lenient = server.insecureHTTPParser === undefined ?
isLenient() : server.insecureHTTPParser;
// TODO(addaleax): This doesn't play well with the
// `async_hooks.currentResource()` proposal, see
// https://github.com/nodejs/node/pull/21313
parser.initialize(
HTTPParser.REQUEST,
new HTTPServerAsyncResource('HTTPINCOMINGMESSAGE', socket),
server.maxHeaderSize || 0,
lenient ? kLenientAll : kLenientNone,
server[kConnections],
);
parser.socket = socket;
socket.parser = parser;
// Propagate headers limit from server instance to parser
if (typeof server.maxHeadersCount === 'number') {
parser.maxHeaderPairs = server.maxHeadersCount << 1;
}
const state = {
onData: null,
onEnd: null,
onClose: null,
onDrain: null,
outgoing: [],
incoming: [],
// `outgoingData` is an approximate amount of bytes queued through all
// inactive responses. If more data than the high watermark is queued - we
// need to pause TCP socket/HTTP parser, and wait until the data will be
// sent to the client.
outgoingData: 0,
requestsCount: 0,
keepAliveTimeoutSet: false
};
state.onData = socketOnData.bind(undefined,
server, socket, parser, state);
state.onEnd = socketOnEnd.bind(undefined,
server, socket, parser, state);
state.onClose = socketOnClose.bind(undefined,
socket, state);
state.onDrain = socketOnDrain.bind(undefined,
socket, state);
socket.on('data', state.onData);
socket.on('error', socketOnError);
socket.on('end', state.onEnd);
socket.on('close', state.onClose);
socket.on('drain', state.onDrain);
parser.onIncoming = parserOnIncoming.bind(undefined,
server, socket, state);
// We are consuming socket, so it won't get any actual data
socket.on('resume', onSocketResume);
socket.on('pause', onSocketPause);
// Overrides to unconsume on `data`, `readable` listeners
socket.on = generateSocketListenerWrapper('on');
socket.addListener = generateSocketListenerWrapper('addListener');
socket.prependListener = generateSocketListenerWrapper('prependListener');
socket.setEncoding = socketSetEncoding;
// We only consume the socket if it has never been consumed before.
if (socket._handle && socket._handle.isStreamBase &&
!socket._handle._consumed) {
parser._consumed = true;
socket._handle._consumed = true;
parser.consume(socket._handle);
}
parser[kOnExecute] =
onParserExecute.bind(undefined,
server, socket, parser, state);
parser[kOnTimeout] =
onParserTimeout.bind(undefined,
server, socket);
socket._paused = false;
}
function socketSetEncoding() {
throw new ERR_HTTP_SOCKET_ENCODING();
}
function updateOutgoingData(socket, state, delta) {
state.outgoingData += delta;
socketOnDrain(socket, state);
}
function socketOnDrain(socket, state) {
const needPause = state.outgoingData > socket.writableHighWaterMark;
// If we previously paused, then start reading again.
if (socket._paused && !needPause) {
socket._paused = false;
if (socket.parser)
socket.parser.resume();
socket.resume();
}
const msg = socket._httpMessage;
if (msg && !msg.finished && msg[kNeedDrain]) {
msg[kNeedDrain] = false;
msg.emit('drain');
}
}
function socketOnTimeout() {
const req = this.parser && this.parser.incoming;
const reqTimeout = req && !req.complete && req.emit('timeout', this);
const res = this._httpMessage;
const resTimeout = res && res.emit('timeout', this);
const serverTimeout = this.server.emit('timeout', this);
if (!reqTimeout && !resTimeout && !serverTimeout)
this.destroy();
}
function socketOnClose(socket, state) {
debug('server socket close');
freeParser(socket.parser, null, socket);
abortIncoming(state.incoming);
}
function abortIncoming(incoming) {
while (incoming.length) {
const req = incoming.shift();
req.destroy(connResetException('aborted'));
}
// Abort socket._httpMessage ?
}
function socketOnEnd(server, socket, parser, state) {
const ret = parser.finish();
if (ret instanceof Error) {
debug('parse error');
// socketOnError has additional logic and will call socket.destroy(err).
socketOnError.call(socket, ret);
} else if (!server.httpAllowHalfOpen) {
socket.end();
} else if (state.outgoing.length) {
state.outgoing[state.outgoing.length - 1]._last = true;
} else if (socket._httpMessage) {
socket._httpMessage._last = true;
} else {
socket.end();
}
}
function socketOnData(server, socket, parser, state, d) {
assert(!socket._paused);
debug('SERVER socketOnData %d', d.length);
const ret = parser.execute(d);
onParserExecuteCommon(server, socket, parser, state, ret, d);
}
function onRequestTimeout(socket) {
// socketOnError has additional logic and will call socket.destroy(err).
socketOnError.call(socket, new ERR_HTTP_REQUEST_TIMEOUT());
}
function onParserExecute(server, socket, parser, state, ret) {
// When underlying `net.Socket` instance is consumed - no
// `data` events are emitted, and thus `socket.setTimeout` fires the
// callback even if the data is constantly flowing into the socket.
// See, https://github.com/nodejs/node/commit/ec2822adaad76b126b5cccdeaa1addf2376c9aa6
socket._unrefTimer();
debug('SERVER socketOnParserExecute %d', ret);
onParserExecuteCommon(server, socket, parser, state, ret, undefined);
}
function onParserTimeout(server, socket) {
const serverTimeout = server.emit('timeout', socket);
if (!serverTimeout)
socket.destroy();
}
const noop = () => {};
const badRequestResponse = Buffer.from(
`HTTP/1.1 400 ${STATUS_CODES[400]}\r\n` +
'Connection: close\r\n\r\n', 'ascii'
);
const requestTimeoutResponse = Buffer.from(
`HTTP/1.1 408 ${STATUS_CODES[408]}\r\n` +
'Connection: close\r\n\r\n', 'ascii'
);
const requestHeaderFieldsTooLargeResponse = Buffer.from(
`HTTP/1.1 431 ${STATUS_CODES[431]}\r\n` +
'Connection: close\r\n\r\n', 'ascii'
);
function socketOnError(e) {
// Ignore further errors
this.removeListener('error', socketOnError);
if (this.listenerCount('error') === 0) {
this.on('error', noop);
}
if (!this.server.emit('clientError', e, this)) {
if (this.writable && this.bytesWritten === 0) {
let response;
switch (e.code) {
case 'HPE_HEADER_OVERFLOW':
response = requestHeaderFieldsTooLargeResponse;
break;
case 'ERR_HTTP_REQUEST_TIMEOUT':
response = requestTimeoutResponse;
break;
default:
response = badRequestResponse;
break;
}
this.write(response);
}
this.destroy(e);
}
}
function onParserExecuteCommon(server, socket, parser, state, ret, d) {
resetSocketTimeout(server, socket, state);
if (ret instanceof Error) {
prepareError(ret, parser, d);
debug('parse error', ret);
socketOnError.call(socket, ret);
} else if (parser.incoming && parser.incoming.upgrade) {
// Upgrade or CONNECT
const req = parser.incoming;
debug('SERVER upgrade or connect', req.method);
if (!d)
d = parser.getCurrentBuffer();
socket.removeListener('data', state.onData);
socket.removeListener('end', state.onEnd);
socket.removeListener('close', state.onClose);
socket.removeListener('drain', state.onDrain);
socket.removeListener('error', socketOnError);
socket.removeListener('timeout', socketOnTimeout);
unconsume(parser, socket);
parser.finish();
freeParser(parser, req, socket);
parser = null;
const eventName = req.method === 'CONNECT' ? 'connect' : 'upgrade';
if (eventName === 'upgrade' || server.listenerCount(eventName) > 0) {
debug('SERVER have listener for %s', eventName);
const bodyHead = d.slice(ret, d.length);
socket.readableFlowing = null;
server.emit(eventName, req, socket, bodyHead);
} else {
// Got CONNECT method, but have no handler.
socket.destroy();
}
} else if (parser.incoming && parser.incoming.method === 'PRI') {
debug('SERVER got PRI request');
socket.destroy();
}
if (socket._paused && socket.parser) {
// onIncoming paused the socket, we should pause the parser as well
debug('pause parser');
socket.parser.pause();
}
}
function clearIncoming(req) {
req = req || this;
const parser = req.socket && req.socket.parser;
// Reset the .incoming property so that the request object can be gc'ed.
if (parser && parser.incoming === req) {
if (req.readableEnded) {
parser.incoming = null;
} else {
req.on('end', clearIncoming);
}
}
}
function resOnFinish(req, res, socket, state, server) {
if (onResponseFinishChannel.hasSubscribers) {
onResponseFinishChannel.publish({
request: req,
response: res,
socket,
server
});
}
// Usually the first incoming element should be our request. it may
// be that in the case abortIncoming() was called that the incoming
// array will be empty.
assert(state.incoming.length === 0 || state.incoming[0] === req);
state.incoming.shift();
// If the user never called req.read(), and didn't pipe() or
// .resume() or .on('data'), then we call req._dump() so that the
// bytes will be pulled off the wire.
if (!req._consuming && !req._readableState.resumeScheduled)
req._dump();
res.detachSocket(socket);
clearIncoming(req);
process.nextTick(emitCloseNT, res);
if (res._last) {
if (typeof socket.destroySoon === 'function') {
socket.destroySoon();
} else {
socket.end();
}
} else if (state.outgoing.length === 0) {
if (server.keepAliveTimeout && typeof socket.setTimeout === 'function') {
socket.setTimeout(server.keepAliveTimeout);
state.keepAliveTimeoutSet = true;
}
} else {
// Start sending the next message
const m = state.outgoing.shift();
if (m) {
m.assignSocket(socket);
}
}
}
function emitCloseNT(self) {
if (!self._closed) {
self.destroyed = true;
self._closed = true;
self.emit('close');
}
}
// The following callback is issued after the headers have been read on a
// new message. In this callback we setup the response object and pass it
// to the user.
function parserOnIncoming(server, socket, state, req, keepAlive) {
resetSocketTimeout(server, socket, state);
if (req.upgrade) {
req.upgrade = req.method === 'CONNECT' ||
server.listenerCount('upgrade') > 0;
if (req.upgrade)
return 2;
}
state.incoming.push(req);
// If the writable end isn't consuming, then stop reading
// so that we don't become overwhelmed by a flood of
// pipelined requests that may never be resolved.
if (!socket._paused) {
const ws = socket._writableState;
if (ws.needDrain || state.outgoingData >= socket.writableHighWaterMark) {
socket._paused = true;
// We also need to pause the parser, but don't do that until after
// the call to execute, because we may still be processing the last
// chunk.
socket.pause();
}
}
const res = new server[kServerResponse](req);
res._keepAliveTimeout = server.keepAliveTimeout;
res._onPendingData = updateOutgoingData.bind(undefined,
socket, state);
res.shouldKeepAlive = keepAlive;
res[kUniqueHeaders] = server[kUniqueHeaders];
DTRACE_HTTP_SERVER_REQUEST(req, socket);
if (onRequestStartChannel.hasSubscribers) {
onRequestStartChannel.publish({
request: req,
response: res,
socket,
server
});
}
if (socket._httpMessage) {
// There are already pending outgoing res, append.
state.outgoing.push(res);
} else {
res.assignSocket(socket);
}
// When we're finished writing the response, check if this is the last
// response, if so destroy the socket.
res.on('finish',
resOnFinish.bind(undefined,
req, res, socket, state, server));
let handled = false;
if (req.httpVersionMajor === 1 && req.httpVersionMinor === 1) {
const isRequestsLimitSet = (
typeof server.maxRequestsPerSocket === 'number' &&
server.maxRequestsPerSocket > 0
);
if (isRequestsLimitSet) {
state.requestsCount++;
res.maxRequestsOnConnectionReached = (
server.maxRequestsPerSocket <= state.requestsCount);
}
if (isRequestsLimitSet &&
(server.maxRequestsPerSocket < state.requestsCount)) {
handled = true;
res.writeHead(503);
res.end();
} else if (req.headers.expect !== undefined) {
handled = true;
if (RegExpPrototypeExec(continueExpression, req.headers.expect) !== null) {
res._expect_continue = true;
if (server.listenerCount('checkContinue') > 0) {
server.emit('checkContinue', req, res);
} else {
res.writeContinue();
server.emit('request', req, res);
}
} else if (server.listenerCount('checkExpectation') > 0) {
server.emit('checkExpectation', req, res);
} else {
res.writeHead(417);
res.end();
}
}
}
if (!handled) {
server.emit('request', req, res);
}
return 0; // No special treatment.
}
function resetSocketTimeout(server, socket, state) {
if (!state.keepAliveTimeoutSet)
return;
socket.setTimeout(server.timeout || 0);
state.keepAliveTimeoutSet = false;
}
function onSocketResume() {
// It may seem that the socket is resumed, but this is an enemy's trick to
// deceive us! `resume` is emitted asynchronously, and may be called from
// `incoming.readStart()`. Stop the socket again here, just to preserve the
// state.
//
// We don't care about stream semantics for the consumed socket anyway.
if (this._paused) {
this.pause();
return;
}
if (this._handle && !this._handle.reading) {
this._handle.reading = true;
this._handle.readStart();
}
}
function onSocketPause() {
if (this._handle && this._handle.reading) {
this._handle.reading = false;
this._handle.readStop();
}
}
function unconsume(parser, socket) {
if (socket._handle) {
if (parser._consumed)
parser.unconsume();
parser._consumed = false;
socket.removeListener('pause', onSocketPause);
socket.removeListener('resume', onSocketResume);
}
}
function generateSocketListenerWrapper(originalFnName) {
return function socketListenerWrap(ev, fn) {
const res = net.Socket.prototype[originalFnName].call(this,
ev, fn);
if (!this.parser) {
this.on = net.Socket.prototype.on;
this.addListener = net.Socket.prototype.addListener;
this.prependListener = net.Socket.prototype.prependListener;
return res;
}
if (ev === 'data' || ev === 'readable')
unconsume(this.parser, this);
return res;
};
}
module.exports = {
STATUS_CODES,
Server,
ServerResponse,
setupConnectionsTracking,
storeHTTPOptions,
_connectionListener: connectionListener,
kServerResponse
};
|