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| (function () { 'use strict';
const events = require('events');
const stream = require('stream');
const timers = require('timers');
const util = require('util');
const assert = require('assert');
const cares = process.binding('cares_wrap');
const uv = process.binding('uv');
const TTYWrap = process.binding('tty_wrap');
const TCP = process.binding('tcp_wrap').TCP;
const Pipe = process.binding('pipe_wrap').Pipe;
const TCPConnectWrap = process.binding('tcp_wrap').TCPConnectWrap;
const PipeConnectWrap = process.binding('pipe_wrap').PipeConnectWrap;
const ShutdownWrap = process.binding('stream_wrap').ShutdownWrap;
const WriteWrap = process.binding('stream_wrap').WriteWrap;
var cluster;
const errnoException = util._errnoException;
const exceptionWithHostPort = util._exceptionWithHostPort;
function noop() {}
function createHandle(fd) {
var type = TTYWrap.guessHandleType(fd);
if (type === 'PIPE') return new Pipe();
Iif (type === 'TCP') return new TCP();
throw new TypeError('Unsupported fd type: ' + type);
}
const debug = util.debuglog('net');
function isPipeName(s) {
return typeof s === 'string' && toNumber(s) === false;
}
exports.createServer = function(options, connectionListener) {
return new Server(options, connectionListener);
};
// Target API:
//
// var s = net.connect({port: 80, host: 'google.com'}, function() {
// ...
// });
//
// There are various forms:
//
// connect(options, [cb])
// connect(port, [host], [cb])
// connect(path, [cb]);
//
exports.connect = exports.createConnection = function() {
var args = normalizeConnectArgs(arguments);
debug('createConnection', args);
var s = new Socket(args[0]);
return Socket.prototype.connect.apply(s, args);
};
// Returns an array [options] or [options, cb]
// It is the same as the argument of Socket.prototype.connect().
function normalizeConnectArgs(args) {
var options = {};
if (args[0] !== null && typeof args[0] === 'object') {
// connect(options, [cb])
options = args[0];
} else if (isPipeName(args[0])) {
// connect(path, [cb]);
options.path = args[0];
} else {
// connect(port, [host], [cb])
options.port = args[0];
if (typeof args[1] === 'string') {
options.host = args[1];
}
}
var cb = args[args.length - 1];
return typeof cb === 'function' ? [options, cb] : [options];
}
exports._normalizeConnectArgs = normalizeConnectArgs;
// called when creating new Socket, or when re-using a closed Socket
function initSocketHandle(self) {
self.destroyed = false;
self.bytesRead = 0;
self._bytesDispatched = 0;
// Handle creation may be deferred to bind() or connect() time.
if (self._handle) {
self._handle.owner = self;
self._handle.onread = onread;
// If handle doesn't support writev - neither do we
if (!self._handle.writev)
self._writev = null;
}
}
function Socket(options) {
if (!(this instanceof Socket)) return new Socket(options);
this._connecting = false;
this._hadError = false;
this._handle = null;
this._parent = null;
this._host = null;
Iif (typeof options === 'number')
options = { fd: options }; // Legacy interface.
else if (options === undefined)
options = {};
stream.Duplex.call(this, options);
if (options.handle) {
this._handle = options.handle; // private
} else if (options.fd !== undefined) {
this._handle = createHandle(options.fd);
this._handle.open(options.fd);
Iif ((options.fd == 1 || options.fd == 2) &&
(this._handle instanceof Pipe) &&
process.platform === 'win32') {
// Make stdout and stderr blocking on Windows
var err = this._handle.setBlocking(true);
if (err)
throw errnoException(err, 'setBlocking');
}
this.readable = options.readable !== false;
this.writable = options.writable !== false;
} else {
// these will be set once there is a connection
this.readable = this.writable = false;
}
// shut down the socket when we're finished with it.
this.on('finish', onSocketFinish);
this.on('_socketEnd', onSocketEnd);
initSocketHandle(this);
this._pendingData = null;
this._pendingEncoding = '';
// handle strings directly
this._writableState.decodeStrings = false;
// default to *not* allowing half open sockets
this.allowHalfOpen = options && options.allowHalfOpen || false;
// if we have a handle, then start the flow of data into the
// buffer. if not, then this will happen when we connect
if (this._handle && options.readable !== false) {
if (options.pauseOnCreate) {
// stop the handle from reading and pause the stream
this._handle.reading = false;
this._handle.readStop();
this._readableState.flowing = false;
} else {
this.read(0);
}
}
}
util.inherits(Socket, stream.Duplex);
Socket.prototype._unrefTimer = function unrefTimer() {
for (var s = this; s !== null; s = s._parent)
timers._unrefActive(s);
};
// the user has called .end(), and all the bytes have been
// sent out to the other side.
// If allowHalfOpen is false, or if the readable side has
// ended already, then destroy.
// If allowHalfOpen is true, then we need to do a shutdown,
// so that only the writable side will be cleaned up.
function onSocketFinish() {
// If still connecting - defer handling 'finish' until 'connect' will happen
if (this._connecting) {
debug('osF: not yet connected');
return this.once('connect', onSocketFinish);
}
debug('onSocketFinish');
if (!this.readable || this._readableState.ended) {
debug('oSF: ended, destroy', this._readableState);
return this.destroy();
}
debug('oSF: not ended, call shutdown()');
// otherwise, just shutdown, or destroy() if not possible
if (!this._handle || !this._handle.shutdown)
return this.destroy();
var req = new ShutdownWrap();
req.oncomplete = afterShutdown;
req.handle = this._handle;
var err = this._handle.shutdown(req);
Iif (err)
return this._destroy(errnoException(err, 'shutdown'));
}
function afterShutdown(status, handle, req) {
var self = handle.owner;
debug('afterShutdown destroyed=%j', self.destroyed,
self._readableState);
// callback may come after call to destroy.
if (self.destroyed)
return;
Iif (self._readableState.ended) {
debug('readableState ended, destroying');
self.destroy();
} else {
self.once('_socketEnd', self.destroy);
}
}
// the EOF has been received, and no more bytes are coming.
// if the writable side has ended already, then clean everything
// up.
function onSocketEnd() {
// XXX Should not have to do as much crap in this function.
// ended should already be true, since this is called *after*
// the EOF errno and onread has eof'ed
debug('onSocketEnd', this._readableState);
this._readableState.ended = true;
Iif (this._readableState.endEmitted) {
this.readable = false;
maybeDestroy(this);
} else {
this.once('end', function() {
this.readable = false;
maybeDestroy(this);
});
this.read(0);
}
if (!this.allowHalfOpen) {
this.write = writeAfterFIN;
this.destroySoon();
}
}
// Provide a better error message when we call end() as a result
// of the other side sending a FIN. The standard 'write after end'
// is overly vague, and makes it seem like the user's code is to blame.
function writeAfterFIN(chunk, encoding, cb) {
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
var er = new Error('This socket has been ended by the other party');
er.code = 'EPIPE';
var self = this;
// TODO: defer error events consistently everywhere, not just the cb
self.emit('error', er);
if (typeof cb === 'function') {
process.nextTick(cb, er);
}
}
exports.Socket = Socket;
exports.Stream = Socket; // Legacy naming.
Socket.prototype.read = function(n) {
if (n === 0)
return stream.Readable.prototype.read.call(this, n);
this.read = stream.Readable.prototype.read;
this._consuming = true;
return this.read(n);
};
Socket.prototype.listen = function() {
debug('socket.listen');
var self = this;
self.on('connection', arguments[0]);
listen(self, null, null, null);
};
Socket.prototype.setTimeout = function(msecs, callback) {
if (msecs === 0) {
timers.unenroll(this);
if (callback) {
this.removeListener('timeout', callback);
}
} else {
timers.enroll(this, msecs);
timers._unrefActive(this);
if (callback) {
this.once('timeout', callback);
}
}
return this;
};
Socket.prototype._onTimeout = function() {
debug('_onTimeout');
this.emit('timeout');
};
Socket.prototype.setNoDelay = function(enable) {
if (!this._handle) {
this.once('connect',
enable ? this.setNoDelay : this.setNoDelay.bind(this, enable));
return this;
}
// backwards compatibility: assume true when `enable` is omitted
if (this._handle.setNoDelay)
this._handle.setNoDelay(enable === undefined ? true : !!enable);
return this;
};
Socket.prototype.setKeepAlive = function(setting, msecs) {
if (!this._handle) {
this.once('connect', this.setKeepAlive.bind(this, setting, msecs));
return this;
}
Eif (this._handle.setKeepAlive)
this._handle.setKeepAlive(setting, ~~(msecs / 1000));
return this;
};
Socket.prototype.address = function() {
return this._getsockname();
};
Object.defineProperty(Socket.prototype, 'readyState', {
get: function() {
if (this._connecting) {
return 'opening';
} else if (this.readable && this.writable) {
return 'open';
} else if (this.readable && !this.writable) {
return 'readOnly';
} else Iif (!this.readable && this.writable) {
return 'writeOnly';
} else {
return 'closed';
}
}
});
Object.defineProperty(Socket.prototype, 'bufferSize', {
get: function() {
if (this._handle) {
return this._handle.writeQueueSize + this._writableState.length;
}
}
});
// Just call handle.readStart until we have enough in the buffer
Socket.prototype._read = function(n) {
debug('_read');
if (this._connecting || !this._handle) {
debug('_read wait for connection');
this.once('connect', this._read.bind(this, n));
} else if (!this._handle.reading) {
// not already reading, start the flow
debug('Socket._read readStart');
this._handle.reading = true;
var err = this._handle.readStart();
if (err)
this._destroy(errnoException(err, 'read'));
}
};
Socket.prototype.end = function(data, encoding) {
stream.Duplex.prototype.end.call(this, data, encoding);
this.writable = false;
DTRACE_NET_STREAM_END(this);
;
// just in case we're waiting for an EOF.
if (this.readable && !this._readableState.endEmitted)
this.read(0);
else
maybeDestroy(this);
};
// Call whenever we set writable=false or readable=false
function maybeDestroy(socket) {
if (!socket.readable &&
!socket.writable &&
!socket.destroyed &&
!socket._connecting &&
!socket._writableState.length) {
socket.destroy();
}
}
Socket.prototype.destroySoon = function() {
if (this.writable)
this.end();
if (this._writableState.finished)
this.destroy();
else
this.once('finish', this.destroy);
};
Socket.prototype._destroy = function(exception, cb) {
debug('destroy');
var self = this;
function fireErrorCallbacks() {
if (cb) cb(exception);
if (exception && !self._writableState.errorEmitted) {
process.nextTick(emitErrorNT, self, exception);
self._writableState.errorEmitted = true;
}
}
if (this.destroyed) {
debug('already destroyed, fire error callbacks');
fireErrorCallbacks();
return;
}
self._connecting = false;
this.readable = this.writable = false;
for (var s = this; s !== null; s = s._parent)
timers.unenroll(s);
debug('close');
if (this._handle) {
Eif (this !== process.stderr)
debug('close handle');
var isException = exception ? true : false;
this._handle.close(function() {
debug('emit close');
self.emit('close', isException);
});
this._handle.onread = noop;
this._handle = null;
}
// we set destroyed to true before firing error callbacks in order
// to make it re-entrance safe in case Socket.prototype.destroy()
// is called within callbacks
this.destroyed = true;
fireErrorCallbacks();
if (this.server) {
;
debug('has server');
this.server._connections--;
Eif (this.server._emitCloseIfDrained) {
this.server._emitCloseIfDrained();
}
}
};
Socket.prototype.destroy = function(exception) {
debug('destroy', exception);
this._destroy(exception);
};
// This function is called whenever the handle gets a
// buffer, or when there's an error reading.
function onread(nread, buffer) {
var handle = this;
var self = handle.owner;
assert(handle === self._handle, 'handle != self._handle');
self._unrefTimer();
debug('onread', nread);
if (nread > 0) {
debug('got data');
// read success.
// In theory (and in practice) calling readStop right now
// will prevent this from being called again until _read() gets
// called again.
// if it's not enough data, we'll just call handle.readStart()
// again right away.
self.bytesRead += nread;
// Optimization: emit the original buffer with end points
var ret = self.push(buffer);
if (handle.reading && !ret) {
handle.reading = false;
debug('readStop');
var err = handle.readStop();
Iif (err)
self._destroy(errnoException(err, 'read'));
}
return;
}
// if we didn't get any bytes, that doesn't necessarily mean EOF.
// wait for the next one.
Iif (nread === 0) {
debug('not any data, keep waiting');
return;
}
// Error, possibly EOF.
if (nread !== uv.UV_EOF) {
return self._destroy(errnoException(nread, 'read'));
}
debug('EOF');
if (self._readableState.length === 0) {
self.readable = false;
maybeDestroy(self);
}
// push a null to signal the end of data.
self.push(null);
// internal end event so that we know that the actual socket
// is no longer readable, and we can start the shutdown
// procedure. No need to wait for all the data to be consumed.
self.emit('_socketEnd');
}
Socket.prototype._getpeername = function() {
if (!this._peername) {
if (!this._handle || !this._handle.getpeername) {
return {};
}
var out = {};
var err = this._handle.getpeername(out);
Iif (err) return {}; // FIXME(bnoordhuis) Throw?
this._peername = out;
}
return this._peername;
};
Socket.prototype.__defineGetter__('remoteAddress', function() {
return this._getpeername().address;
});
Socket.prototype.__defineGetter__('remoteFamily', function() {
return this._getpeername().family;
});
Socket.prototype.__defineGetter__('remotePort', function() {
return this._getpeername().port;
});
Socket.prototype._getsockname = function() {
if (!this._handle || !this._handle.getsockname) {
return {};
}
if (!this._sockname) {
var out = {};
var err = this._handle.getsockname(out);
Iif (err) return {}; // FIXME(bnoordhuis) Throw?
this._sockname = out;
}
return this._sockname;
};
Socket.prototype.__defineGetter__('localAddress', function() {
return this._getsockname().address;
});
Socket.prototype.__defineGetter__('localPort', function() {
return this._getsockname().port;
});
Socket.prototype.write = function(chunk, encoding, cb) {
if (typeof chunk !== 'string' && !(chunk instanceof Buffer))
throw new TypeError('invalid data');
return stream.Duplex.prototype.write.apply(this, arguments);
};
Socket.prototype._writeGeneric = function(writev, data, encoding, cb) {
// If we are still connecting, then buffer this for later.
// The Writable logic will buffer up any more writes while
// waiting for this one to be done.
if (this._connecting) {
this._pendingData = data;
this._pendingEncoding = encoding;
this.once('connect', function() {
this._writeGeneric(writev, data, encoding, cb);
});
return;
}
this._pendingData = null;
this._pendingEncoding = '';
this._unrefTimer();
Iif (!this._handle) {
this._destroy(new Error('This socket is closed.'), cb);
return false;
}
var req = new WriteWrap();
req.handle = this._handle;
req.oncomplete = afterWrite;
req.async = false;
var err;
if (writev) {
var chunks = new Array(data.length << 1);
for (var i = 0; i < data.length; i++) {
var entry = data[i];
var chunk = entry.chunk;
var enc = entry.encoding;
chunks[i * 2] = chunk;
chunks[i * 2 + 1] = enc;
}
err = this._handle.writev(req, chunks);
// Retain chunks
Eif (err === 0) req._chunks = chunks;
} else {
var enc;
if (data instanceof Buffer) {
req.buffer = data; // Keep reference alive.
enc = 'buffer';
} else {
enc = encoding;
}
err = createWriteReq(req, this._handle, data, enc);
}
Iif (err)
return this._destroy(errnoException(err, 'write', req.error), cb);
this._bytesDispatched += req.bytes;
// If it was entirely flushed, we can write some more right now.
// However, if more is left in the queue, then wait until that clears.
if (req.async && this._handle.writeQueueSize != 0)
req.cb = cb;
else
cb();
};
Socket.prototype._writev = function(chunks, cb) {
this._writeGeneric(true, chunks, '', cb);
};
Socket.prototype._write = function(data, encoding, cb) {
this._writeGeneric(false, data, encoding, cb);
};
function createWriteReq(req, handle, data, encoding) {
switch (encoding) {
case 'binary':
return handle.writeBinaryString(req, data);
case 'buffer':
return handle.writeBuffer(req, data);
case 'utf8':
case 'utf-8':
return handle.writeUtf8String(req, data);
case 'ascii':
return handle.writeAsciiString(req, data);
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return handle.writeUcs2String(req, data);
default:
return handle.writeBuffer(req, new Buffer(data, encoding));
}
}
Socket.prototype.__defineGetter__('bytesWritten', function() {
var bytes = this._bytesDispatched,
state = this._writableState,
data = this._pendingData,
encoding = this._pendingEncoding;
state.getBuffer().forEach(function(el) {
if (el.chunk instanceof Buffer)
bytes += el.chunk.length;
else
bytes += Buffer.byteLength(el.chunk, el.encoding);
});
if (data) {
Iif (data instanceof Buffer)
bytes += data.length;
else
bytes += Buffer.byteLength(data, encoding);
}
return bytes;
});
function afterWrite(status, handle, req, err) {
var self = handle.owner;
if (self !== process.stderr && self !== process.stdout)
debug('afterWrite', status);
// callback may come after call to destroy.
if (self.destroyed) {
debug('afterWrite destroyed');
return;
}
if (status < 0) {
var ex = exceptionWithHostPort(status, 'write', req.address, req.port);
debug('write failure', ex);
self._destroy(ex, req.cb);
return;
}
self._unrefTimer();
if (self !== process.stderr && self !== process.stdout)
debug('afterWrite call cb');
if (req.cb)
req.cb.call(self);
}
function connect(self, address, port, addressType, localAddress, localPort) {
// TODO return promise from Socket.prototype.connect which
// wraps _connectReq.
assert.ok(self._connecting);
var err;
if (localAddress || localPort) {
var bind;
Eif (addressType === 4) {
localAddress = localAddress || '0.0.0.0';
bind = self._handle.bind;
} else if (addressType === 6) {
localAddress = localAddress || '::';
bind = self._handle.bind6;
} else {
self._destroy(new TypeError('Invalid addressType: ' + addressType));
return;
}
debug('binding to localAddress: %s and localPort: %d',
localAddress,
localPort);
bind = bind.bind(self._handle);
err = bind(localAddress, localPort);
if (err) {
var ex = exceptionWithHostPort(err, 'bind', localAddress, localPort);
self._destroy(ex);
return;
}
}
if (addressType === 6 || addressType === 4) {
var req = new TCPConnectWrap();
req.oncomplete = afterConnect;
req.address = address;
req.port = port;
if (addressType === 4)
err = self._handle.connect(req, address, port);
else
err = self._handle.connect6(req, address, port);
} else {
var req = new PipeConnectWrap();
req.address = address;
req.oncomplete = afterConnect;
err = self._handle.connect(req, address, afterConnect);
}
if (err) {
var sockname = self._getsockname();
var details;
Eif (sockname) {
details = sockname.address + ':' + sockname.port;
}
var ex = exceptionWithHostPort(err, 'connect', address, port, details);
self._destroy(ex);
}
}
// Check that the port number is not NaN when coerced to a number,
// is an integer and that it falls within the legal range of port numbers.
function isLegalPort(port) {
if (typeof port === 'string' && port.trim() === '')
return false;
return +port === (port >>> 0) && port >= 0 && port <= 0xFFFF;
}
Socket.prototype.connect = function(options, cb) {
if (this.write !== Socket.prototype.write)
this.write = Socket.prototype.write;
if (options === null || typeof options !== 'object') {
// Old API:
// connect(port, [host], [cb])
// connect(path, [cb]);
var args = normalizeConnectArgs(arguments);
return Socket.prototype.connect.apply(this, args);
}
if (this.destroyed) {
this._readableState.reading = false;
this._readableState.ended = false;
this._readableState.endEmitted = false;
this._writableState.ended = false;
this._writableState.ending = false;
this._writableState.finished = false;
this._writableState.errorEmitted = false;
this.destroyed = false;
this._handle = null;
this._peername = null;
}
var self = this;
var pipe = !!options.path;
debug('pipe', pipe, options.path);
if (!this._handle) {
this._handle = pipe ? new Pipe() : new TCP();
initSocketHandle(this);
}
if (typeof cb === 'function') {
self.once('connect', cb);
}
this._unrefTimer();
self._connecting = true;
self.writable = true;
if (pipe) {
connect(self, options.path);
} else {
lookupAndConnect(self, options);
}
return self;
};
function lookupAndConnect(self, options) {
const dns = require('dns');
var host = options.host || 'localhost';
var port = options.port;
var localAddress = options.localAddress;
var localPort = options.localPort;
if (localAddress && !exports.isIP(localAddress))
throw new TypeError('localAddress must be a valid IP: ' + localAddress);
if (localPort && typeof localPort !== 'number')
throw new TypeError('localPort should be a number: ' + localPort);
if (typeof port !== 'undefined') {
if (typeof port !== 'number' && typeof port !== 'string')
throw new TypeError('port should be a number or string: ' + port);
if (!isLegalPort(port))
throw new RangeError('port should be >= 0 and < 65536: ' + port);
}
port |= 0;
// If host is an IP, skip performing a lookup
// TODO(evanlucas) should we hot path this for localhost?
var addressType = exports.isIP(host);
if (addressType) {
connect(self, host, port, addressType, localAddress, localPort);
return;
}
Iif (options.lookup && typeof options.lookup !== 'function')
throw new TypeError('options.lookup should be a function.');
var dnsopts = {
family: options.family,
hints: 0
};
if (dnsopts.family !== 4 && dnsopts.family !== 6) {
dnsopts.hints = dns.ADDRCONFIG;
// The AI_V4MAPPED hint is not supported on FreeBSD, and getaddrinfo
// returns EAI_BADFLAGS. However, it seems to be supported on most other
// systems. See
// http://lists.freebsd.org/pipermail/freebsd-bugs/2008-February/028260.html
// for more information on the lack of support for FreeBSD.
Eif (process.platform !== 'freebsd')
dnsopts.hints |= dns.V4MAPPED;
}
debug('connect: find host ' + host);
debug('connect: dns options ' + dnsopts);
self._host = host;
var lookup = options.lookup || dns.lookup;
lookup(host, dnsopts, function(err, ip, addressType) {
self.emit('lookup', err, ip, addressType);
// It's possible we were destroyed while looking this up.
// XXX it would be great if we could cancel the promise returned by
// the look up.
if (!self._connecting) return;
if (err) {
// net.createConnection() creates a net.Socket object and
// immediately calls net.Socket.connect() on it (that's us).
// There are no event listeners registered yet so defer the
// error event to the next tick.
err.host = options.host;
err.port = options.port;
err.message = err.message + ' ' + options.host + ':' + options.port;
process.nextTick(connectErrorNT, self, err);
} else {
self._unrefTimer();
connect(self,
ip,
port,
addressType,
localAddress,
localPort);
}
});
}
function connectErrorNT(self, err) {
self.emit('error', err);
self._destroy();
}
Socket.prototype.ref = function() {
if (!this._handle) {
this.once('connect', this.ref);
return this;
}
this._handle.ref();
return this;
};
Socket.prototype.unref = function() {
if (!this._handle) {
this.once('connect', this.unref);
return this;
}
this._handle.unref();
return this;
};
function afterConnect(status, handle, req, readable, writable) {
var self = handle.owner;
// callback may come after call to destroy
if (self.destroyed) {
return;
}
// Update handle if it was wrapped
// TODO(indutny): assert that the handle is actually an ancestor of old one
handle = self._handle;
debug('afterConnect');
assert.ok(self._connecting);
self._connecting = false;
if (status == 0) {
self.readable = readable;
self.writable = writable;
self._unrefTimer();
self.emit('connect');
// start the first read, or get an immediate EOF.
// this doesn't actually consume any bytes, because len=0.
if (readable && !self.isPaused())
self.read(0);
} else {
self._connecting = false;
var details;
Iif (req.localAddress && req.localPort) {
ex.localAddress = req.localAddress;
ex.localPort = req.localPort;
details = ex.localAddress + ':' + ex.localPort;
}
var ex = exceptionWithHostPort(status,
'connect',
req.address,
req.port,
details);
self._destroy(ex);
}
}
function Server(options, connectionListener) {
if (!(this instanceof Server))
return new Server(options, connectionListener);
events.EventEmitter.call(this);
var self = this;
var options;
if (typeof options === 'function') {
connectionListener = options;
options = {};
self.on('connection', connectionListener);
} else {
options = options || {};
if (typeof connectionListener === 'function') {
self.on('connection', connectionListener);
}
}
this._connections = 0;
Object.defineProperty(this, 'connections', {
get: util.deprecate(function() {
Iif (self._usingSlaves) {
return null;
}
return self._connections;
}, 'connections property is deprecated. Use getConnections() method'),
set: util.deprecate(function(val) {
return (self._connections = val);
}, 'connections property is deprecated. Use getConnections() method'),
configurable: true, enumerable: false
});
this._handle = null;
this._usingSlaves = false;
this._slaves = [];
this._unref = false;
this.allowHalfOpen = options.allowHalfOpen || false;
this.pauseOnConnect = !!options.pauseOnConnect;
}
util.inherits(Server, events.EventEmitter);
exports.Server = Server;
function toNumber(x) { return (x = Number(x)) >= 0 ? x : false; }
function _listen(handle, backlog) {
// Use a backlog of 512 entries. We pass 511 to the listen() call because
// the kernel does: backlogsize = roundup_pow_of_two(backlogsize + 1);
// which will thus give us a backlog of 512 entries.
return handle.listen(backlog || 511);
}
var createServerHandle = exports._createServerHandle =
function(address, port, addressType, fd) {
var err = 0;
// assign handle in listen, and clean up if bind or listen fails
var handle;
var isTCP = false;
if (typeof fd === 'number' && fd >= 0) {
try {
handle = createHandle(fd);
}
catch (e) {
// Not a fd we can listen on. This will trigger an error.
debug('listen invalid fd=' + fd + ': ' + e.message);
return uv.UV_EINVAL;
}
handle.open(fd);
handle.readable = true;
handle.writable = true;
assert(!address && !port);
} else if (port === -1 && addressType === -1) {
handle = new Pipe();
Iif (process.platform === 'win32') {
var instances = parseInt(process.env.NODE_PENDING_PIPE_INSTANCES);
if (!isNaN(instances)) {
handle.setPendingInstances(instances);
}
}
} else {
handle = new TCP();
isTCP = true;
}
Eif (address || port || isTCP) {
debug('bind to ' + (address || 'anycast'));
if (!address) {
// Try binding to ipv6 first
err = handle.bind6('::', port);
if (err) {
handle.close();
// Fallback to ipv4
return createServerHandle('0.0.0.0', port);
}
} else if (addressType === 6) {
err = handle.bind6(address, port);
} else {
err = handle.bind(address, port);
}
}
if (err) {
handle.close();
return err;
}
return handle;
};
Server.prototype._listen2 = function(address, port, addressType, backlog, fd) {
debug('listen2', address, port, addressType, backlog, fd);
var self = this;
// If there is not yet a handle, we need to create one and bind.
// In the case of a server sent via IPC, we don't need to do this.
if (self._handle) {
debug('_listen2: have a handle already');
} else {
debug('_listen2: create a handle');
var rval = null;
if (!address && typeof fd !== 'number') {
rval = createServerHandle('::', port, 6, fd);
if (typeof rval === 'number') {
rval = null;
address = '0.0.0.0';
addressType = 4;
} else {
address = '::';
addressType = 6;
}
}
if (rval === null)
rval = createServerHandle(address, port, addressType, fd);
if (typeof rval === 'number') {
var error = exceptionWithHostPort(rval, 'listen', address, port);
process.nextTick(emitErrorNT, self, error);
return;
}
self._handle = rval;
}
self._handle.onconnection = onconnection;
self._handle.owner = self;
var err = _listen(self._handle, backlog);
if (err) {
var ex = exceptionWithHostPort(err, 'listen', address, port);
self._handle.close();
self._handle = null;
process.nextTick(emitErrorNT, self, ex);
return;
}
// generate connection key, this should be unique to the connection
this._connectionKey = addressType + ':' + address + ':' + port;
// unref the handle if the server was unref'ed prior to listening
if (this._unref)
this.unref();
process.nextTick(emitListeningNT, self);
};
function emitErrorNT(self, err) {
self.emit('error', err);
}
function emitListeningNT(self) {
// ensure handle hasn't closed
if (self._handle)
self.emit('listening');
}
function listen(self, address, port, addressType, backlog, fd, exclusive) {
exclusive = !!exclusive;
if (!cluster) cluster = require('cluster');
if (cluster.isMaster || exclusive) {
self._listen2(address, port, addressType, backlog, fd);
return;
}
cluster._getServer(self, address, port, addressType, fd, cb);
function cb(err, handle) {
// EADDRINUSE may not be reported until we call listen(). To complicate
// matters, a failed bind() followed by listen() will implicitly bind to
// a random port. Ergo, check that the socket is bound to the expected
// port before calling listen().
//
// FIXME(bnoordhuis) Doesn't work for pipe handles, they don't have a
// getsockname() method. Non-issue for now, the cluster module doesn't
// really support pipes anyway.
if (err === 0 && port > 0 && handle.getsockname) {
var out = {};
err = handle.getsockname(out);
Iif (err === 0 && port !== out.port)
err = uv.UV_EADDRINUSE;
}
if (err) {
var ex = exceptionWithHostPort(err, 'bind', address, port);
return self.emit('error', ex);
}
self._handle = handle;
self._listen2(address, port, addressType, backlog, fd);
}
}
Server.prototype.listen = function() {
var self = this;
var lastArg = arguments[arguments.length - 1];
if (typeof lastArg === 'function') {
self.once('listening', lastArg);
}
var port = toNumber(arguments[0]);
// The third optional argument is the backlog size.
// When the ip is omitted it can be the second argument.
var backlog = toNumber(arguments[1]) || toNumber(arguments[2]);
if (arguments.length === 0 || typeof arguments[0] === 'function') {
// Bind to a random port.
listen(self, null, 0, null, backlog);
} else if (arguments[0] !== null && typeof arguments[0] === 'object') {
var h = arguments[0];
h = h._handle || h.handle || h;
if (h instanceof TCP) {
self._handle = h;
listen(self, null, -1, -1, backlog);
} else if (typeof h.fd === 'number' && h.fd >= 0) {
listen(self, null, null, null, backlog, h.fd);
} else {
// The first argument is a configuration object
Iif (h.backlog)
backlog = h.backlog;
if (typeof h.port === 'number' || typeof h.port === 'string' ||
(typeof h.port === 'undefined' && 'port' in h)) {
// Undefined is interpreted as zero (random port) for consistency
// with net.connect().
if (typeof h.port !== 'undefined' && !isLegalPort(h.port))
throw new RangeError('port should be >= 0 and < 65536: ' + h.port);
Iif (h.host)
listenAfterLookup(h.port | 0, h.host, backlog, h.exclusive);
else
listen(self, null, h.port | 0, 4, backlog, undefined, h.exclusive);
} else Iif (h.path && isPipeName(h.path)) {
var pipeName = self._pipeName = h.path;
listen(self, pipeName, -1, -1, backlog, undefined, h.exclusive);
} else {
throw new Error('Invalid listen argument: ' + h);
}
}
} else if (isPipeName(arguments[0])) {
// UNIX socket or Windows pipe.
var pipeName = self._pipeName = arguments[0];
listen(self, pipeName, -1, -1, backlog);
} else if (arguments[1] === undefined ||
typeof arguments[1] === 'function' ||
typeof arguments[1] === 'number') {
// The first argument is the port, no IP given.
listen(self, null, port, 4, backlog);
} else {
// The first argument is the port, the second an IP.
listenAfterLookup(port, arguments[1], backlog);
}
function listenAfterLookup(port, address, backlog, exclusive) {
require('dns').lookup(address, function(err, ip, addressType) {
Iif (err) {
self.emit('error', err);
} else {
addressType = ip ? addressType : 4;
listen(self, ip, port, addressType, backlog, undefined, exclusive);
}
});
}
return self;
};
Server.prototype.address = function() {
if (this._handle && this._handle.getsockname) {
var out = {};
this._handle.getsockname(out);
// TODO(bnoordhuis) Check err and throw?
return out;
} else Eif (this._pipeName) {
return this._pipeName;
} else {
return null;
}
};
function onconnection(err, clientHandle) {
var handle = this;
var self = handle.owner;
debug('onconnection');
Iif (err) {
self.emit('error', errnoException(err, 'accept'));
return;
}
if (self.maxConnections && self._connections >= self.maxConnections) {
clientHandle.close();
return;
}
var socket = new Socket({
handle: clientHandle,
allowHalfOpen: self.allowHalfOpen,
pauseOnCreate: self.pauseOnConnect
});
socket.readable = socket.writable = true;
self._connections++;
socket.server = self;
DTRACE_NET_SERVER_CONNECTION(socket);
;
;
self.emit('connection', socket);
}
Server.prototype.getConnections = function(cb) {
function end(err, connections) {
process.nextTick(cb, err, connections);
}
Iif (!this._usingSlaves) {
return end(null, this._connections);
}
// Poll slaves
var left = this._slaves.length,
total = this._connections;
function oncount(err, count) {
Iif (err) {
left = -1;
return end(err);
}
total += count;
Eif (--left === 0) return end(null, total);
}
this._slaves.forEach(function(slave) {
slave.getConnections(oncount);
});
};
Server.prototype.close = function(cb) {
function onSlaveClose() {
if (--left !== 0) return;
self._connections = 0;
self._emitCloseIfDrained();
}
if (typeof cb === 'function') {
if (!this._handle) {
this.once('close', function() {
cb(new Error('Not running'));
});
} else {
this.once('close', cb);
}
}
if (this._handle) {
this._handle.close();
this._handle = null;
}
if (this._usingSlaves) {
var self = this,
left = this._slaves.length;
// Increment connections to be sure that, even if all sockets will be closed
// during polling of slaves, `close` event will be emitted only once.
this._connections++;
// Poll slaves
this._slaves.forEach(function(slave) {
slave.close(onSlaveClose);
});
} else {
this._emitCloseIfDrained();
}
return this;
};
Server.prototype._emitCloseIfDrained = function() {
debug('SERVER _emitCloseIfDrained');
var self = this;
if (self._handle || self._connections) {
debug('SERVER handle? %j connections? %d',
!!self._handle, self._connections);
return;
}
process.nextTick(emitCloseNT, self);
};
function emitCloseNT(self) {
debug('SERVER: emit close');
self.emit('close');
}
Server.prototype.listenFD = util.deprecate(function(fd, type) {
return this.listen({ fd: fd });
}, 'listenFD is deprecated. Use listen({fd: <number>}).');
Server.prototype._setupSlave = function(socketList) {
this._usingSlaves = true;
this._slaves.push(socketList);
};
Server.prototype.ref = function() {
this._unref = false;
Iif (this._handle)
this._handle.ref();
return this;
};
Server.prototype.unref = function() {
this._unref = true;
if (this._handle)
this._handle.unref();
return this;
};
exports.isIP = cares.isIP;
exports.isIPv4 = function(input) {
return exports.isIP(input) === 4;
};
exports.isIPv6 = function(input) {
return exports.isIP(input) === 6;
};
Iif (process.platform === 'win32') {
var simultaneousAccepts;
exports._setSimultaneousAccepts = function(handle) {
if (handle === undefined) {
return;
}
if (simultaneousAccepts === undefined) {
simultaneousAccepts = (process.env.NODE_MANY_ACCEPTS &&
process.env.NODE_MANY_ACCEPTS !== '0');
}
if (handle._simultaneousAccepts !== simultaneousAccepts) {
handle.setSimultaneousAccepts(simultaneousAccepts);
handle._simultaneousAccepts = simultaneousAccepts;
}
};
} else {
exports._setSimultaneousAccepts = function(handle) {};
}
}());
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