Current File : //usr/share/nodejs/@types/node/net.d.ts
/**
* > Stability: 2 - Stable
*
* The `net` module provides an asynchronous network API for creating stream-based
* TCP or `IPC` servers ({@link createServer}) and clients
* ({@link createConnection}).
*
* It can be accessed using:
*
* ```js
* const net = require('net');
* ```
* @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/net.js)
*/
declare module "net" {
import * as stream from "node:stream";
import { Abortable, EventEmitter } from "node:events";
import * as dns from "node:dns";
type LookupFunction = (
hostname: string,
options: dns.LookupOneOptions,
callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void,
) => void;
interface AddressInfo {
address: string;
family: string;
port: number;
}
interface SocketConstructorOpts {
fd?: number | undefined;
allowHalfOpen?: boolean | undefined;
readable?: boolean | undefined;
writable?: boolean | undefined;
signal?: AbortSignal;
}
interface OnReadOpts {
buffer: Uint8Array | (() => Uint8Array);
/**
* This function is called for every chunk of incoming data.
* Two arguments are passed to it: the number of bytes written to buffer and a reference to buffer.
* Return false from this function to implicitly pause() the socket.
*/
callback(bytesWritten: number, buf: Uint8Array): boolean;
}
interface ConnectOpts {
/**
* If specified, incoming data is stored in a single buffer and passed to the supplied callback when data arrives on the socket.
* Note: this will cause the streaming functionality to not provide any data, however events like 'error', 'end', and 'close' will
* still be emitted as normal and methods like pause() and resume() will also behave as expected.
*/
onread?: OnReadOpts | undefined;
}
interface TcpSocketConnectOpts extends ConnectOpts {
port: number;
host?: string | undefined;
localAddress?: string | undefined;
localPort?: number | undefined;
hints?: number | undefined;
family?: number | undefined;
lookup?: LookupFunction | undefined;
noDelay?: boolean | undefined;
keepAlive?: boolean | undefined;
keepAliveInitialDelay?: number | undefined;
/**
* @since v18.13.0
*/
autoSelectFamily?: boolean | undefined;
/**
* @since v18.13.0
*/
autoSelectFamilyAttemptTimeout?: number | undefined;
}
interface IpcSocketConnectOpts extends ConnectOpts {
path: string;
}
type SocketConnectOpts = TcpSocketConnectOpts | IpcSocketConnectOpts;
type SocketReadyState = "opening" | "open" | "readOnly" | "writeOnly" | "closed";
/**
* This class is an abstraction of a TCP socket or a streaming `IPC` endpoint
* (uses named pipes on Windows, and Unix domain sockets otherwise). It is also
* an `EventEmitter`.
*
* A `net.Socket` can be created by the user and used directly to interact with
* a server. For example, it is returned by {@link createConnection},
* so the user can use it to talk to the server.
*
* It can also be created by Node.js and passed to the user when a connection
* is received. For example, it is passed to the listeners of a `'connection'` event emitted on a {@link Server}, so the user can use
* it to interact with the client.
* @since v0.3.4
*/
class Socket extends stream.Duplex {
constructor(options?: SocketConstructorOpts);
/**
* Destroys the socket after all data is written. If the `finish` event was already emitted the socket is destroyed immediately.
* If the socket is still writable it implicitly calls `socket.end()`.
* @since v0.3.4
*/
destroySoon(): void;
/**
* Sends data on the socket. The second parameter specifies the encoding in the
* case of a string. It defaults to UTF8 encoding.
*
* Returns `true` if the entire data was flushed successfully to the kernel
* buffer. Returns `false` if all or part of the data was queued in user memory.`'drain'` will be emitted when the buffer is again free.
*
* The optional `callback` parameter will be executed when the data is finally
* written out, which may not be immediately.
*
* See `Writable` stream `write()` method for more
* information.
* @since v0.1.90
* @param [encoding='utf8'] Only used when data is `string`.
*/
write(buffer: Uint8Array | string, cb?: (err?: Error) => void): boolean;
write(str: Uint8Array | string, encoding?: BufferEncoding, cb?: (err?: Error) => void): boolean;
/**
* Initiate a connection on a given socket.
*
* Possible signatures:
*
* * `socket.connect(options[, connectListener])`
* * `socket.connect(path[, connectListener])` for `IPC` connections.
* * `socket.connect(port[, host][, connectListener])` for TCP connections.
* * Returns: `net.Socket` The socket itself.
*
* This function is asynchronous. When the connection is established, the `'connect'` event will be emitted. If there is a problem connecting,
* instead of a `'connect'` event, an `'error'` event will be emitted with
* the error passed to the `'error'` listener.
* The last parameter `connectListener`, if supplied, will be added as a listener
* for the `'connect'` event **once**.
*
* This function should only be used for reconnecting a socket after`'close'` has been emitted or otherwise it may lead to undefined
* behavior.
*/
connect(options: SocketConnectOpts, connectionListener?: () => void): this;
connect(port: number, host: string, connectionListener?: () => void): this;
connect(port: number, connectionListener?: () => void): this;
connect(path: string, connectionListener?: () => void): this;
/**
* Set the encoding for the socket as a `Readable Stream`. See `readable.setEncoding()` for more information.
* @since v0.1.90
* @return The socket itself.
*/
setEncoding(encoding?: BufferEncoding): this;
/**
* Pauses the reading of data. That is, `'data'` events will not be emitted.
* Useful to throttle back an upload.
* @return The socket itself.
*/
pause(): this;
/**
* Close the TCP connection by sending an RST packet and destroy the stream.
* If this TCP socket is in connecting status, it will send an RST packet
* and destroy this TCP socket once it is connected. Otherwise, it will call
* `socket.destroy` with an `ERR_SOCKET_CLOSED` Error. If this is not a TCP socket
* (for example, a pipe), calling this method will immediately throw
* an `ERR_INVALID_HANDLE_TYPE` Error.
* @since v18.3.0
* @return The socket itself.
*/
resetAndDestroy(): this;
/**
* Resumes reading after a call to `socket.pause()`.
* @return The socket itself.
*/
resume(): this;
/**
* Sets the socket to timeout after `timeout` milliseconds of inactivity on
* the socket. By default `net.Socket` do not have a timeout.
*
* When an idle timeout is triggered the socket will receive a `'timeout'` event but the connection will not be severed. The user must manually call `socket.end()` or `socket.destroy()` to
* end the connection.
*
* ```js
* socket.setTimeout(3000);
* socket.on('timeout', () => {
* console.log('socket timeout');
* socket.end();
* });
* ```
*
* If `timeout` is 0, then the existing idle timeout is disabled.
*
* The optional `callback` parameter will be added as a one-time listener for the `'timeout'` event.
* @since v0.1.90
* @return The socket itself.
*/
setTimeout(timeout: number, callback?: () => void): this;
/**
* Enable/disable the use of Nagle's algorithm.
*
* When a TCP connection is created, it will have Nagle's algorithm enabled.
*
* Nagle's algorithm delays data before it is sent via the network. It attempts
* to optimize throughput at the expense of latency.
*
* Passing `true` for `noDelay` or not passing an argument will disable Nagle's
* algorithm for the socket. Passing `false` for `noDelay` will enable Nagle's
* algorithm.
* @since v0.1.90
* @param [noDelay=true]
* @return The socket itself.
*/
setNoDelay(noDelay?: boolean): this;
/**
* Enable/disable keep-alive functionality, and optionally set the initial
* delay before the first keepalive probe is sent on an idle socket.
*
* Set `initialDelay` (in milliseconds) to set the delay between the last
* data packet received and the first keepalive probe. Setting `0` for`initialDelay` will leave the value unchanged from the default
* (or previous) setting.
*
* Enabling the keep-alive functionality will set the following socket options:
*
* * `SO_KEEPALIVE=1`
* * `TCP_KEEPIDLE=initialDelay`
* * `TCP_KEEPCNT=10`
* * `TCP_KEEPINTVL=1`
* @since v0.1.92
* @param [enable=false]
* @param [initialDelay=0]
* @return The socket itself.
*/
setKeepAlive(enable?: boolean, initialDelay?: number): this;
/**
* Returns the bound `address`, the address `family` name and `port` of the
* socket as reported by the operating system:`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`
* @since v0.1.90
*/
address(): AddressInfo | {};
/**
* Calling `unref()` on a socket will allow the program to exit if this is the only
* active socket in the event system. If the socket is already `unref`ed calling`unref()` again will have no effect.
* @since v0.9.1
* @return The socket itself.
*/
unref(): this;
/**
* Opposite of `unref()`, calling `ref()` on a previously `unref`ed socket will _not_ let the program exit if it's the only socket left (the default behavior).
* If the socket is `ref`ed calling `ref` again will have no effect.
* @since v0.9.1
* @return The socket itself.
*/
ref(): this;
/**
* This property shows the number of characters buffered for writing. The buffer
* may contain strings whose length after encoding is not yet known. So this number
* is only an approximation of the number of bytes in the buffer.
*
* `net.Socket` has the property that `socket.write()` always works. This is to
* help users get up and running quickly. The computer cannot always keep up
* with the amount of data that is written to a socket. The network connection
* simply might be too slow. Node.js will internally queue up the data written to a
* socket and send it out over the wire when it is possible.
*
* The consequence of this internal buffering is that memory may grow.
* Users who experience large or growing `bufferSize` should attempt to
* "throttle" the data flows in their program with `socket.pause()` and `socket.resume()`.
* @since v0.3.8
* @deprecated Since v14.6.0 - Use `writableLength` instead.
*/
readonly bufferSize: number;
/**
* The amount of received bytes.
* @since v0.5.3
*/
readonly bytesRead: number;
/**
* The amount of bytes sent.
* @since v0.5.3
*/
readonly bytesWritten: number;
/**
* If `true`,`socket.connect(options[, connectListener])` was
* called and has not yet finished. It will stay `true` until the socket becomes
* connected, then it is set to `false` and the `'connect'` event is emitted. Note
* that the `socket.connect(options[, connectListener])` callback is a listener for the `'connect'` event.
* @since v6.1.0
*/
readonly connecting: boolean;
/**
* This is `true` if the socket is not connected yet, either because `.connect()`
* has not yet been called or because it is still in the process of connecting (see `socket.connecting`).
* @since v10.16.0
*/
readonly pending: boolean;
/**
* See `writable.destroyed` for further details.
*/
readonly destroyed: boolean;
/**
* The string representation of the local IP address the remote client is
* connecting on. For example, in a server listening on `'0.0.0.0'`, if a client
* connects on `'192.168.1.1'`, the value of `socket.localAddress` would be`'192.168.1.1'`.
* @since v0.9.6
*/
readonly localAddress?: string;
/**
* The numeric representation of the local port. For example, `80` or `21`.
* @since v0.9.6
*/
readonly localPort?: number;
/**
* The string representation of the local IP family. `'IPv4'` or `'IPv6'`.
* @since v18.8.0
*/
readonly localFamily?: string;
/**
* This property represents the state of the connection as a string.
* @see {https://nodejs.org/api/net.html#socketreadystate}
* @since v0.5.0
*/
readonly readyState: SocketReadyState;
/**
* The string representation of the remote IP address. For example,`'74.125.127.100'` or `'2001:4860:a005::68'`. Value may be `undefined` if
* the socket is destroyed (for example, if the client disconnected).
* @since v0.5.10
*/
readonly remoteAddress?: string | undefined;
/**
* The string representation of the remote IP family. `'IPv4'` or `'IPv6'`.
* @since v0.11.14
*/
readonly remoteFamily?: string | undefined;
/**
* The numeric representation of the remote port. For example, `80` or `21`.
* @since v0.5.10
*/
readonly remotePort?: number | undefined;
/**
* The socket timeout in milliseconds as set by socket.setTimeout(). It is undefined if a timeout has not been set.
* @since v10.7.0
*/
readonly timeout?: number | undefined;
/**
* Half-closes the socket. i.e., it sends a FIN packet. It is possible the
* server will still send some data.
*
* See `writable.end()` for further details.
* @since v0.1.90
* @param [encoding='utf8'] Only used when data is `string`.
* @param callback Optional callback for when the socket is finished.
* @return The socket itself.
*/
end(callback?: () => void): this;
end(buffer: Uint8Array | string, callback?: () => void): this;
end(str: Uint8Array | string, encoding?: BufferEncoding, callback?: () => void): this;
/**
* events.EventEmitter
* 1. close
* 2. connect
* 3. data
* 4. drain
* 5. end
* 6. error
* 7. lookup
* 8. ready
* 9. timeout
*/
addListener(event: string, listener: (...args: any[]) => void): this;
addListener(event: "close", listener: (hadError: boolean) => void): this;
addListener(event: "connect", listener: () => void): this;
addListener(event: "data", listener: (data: Buffer) => void): this;
addListener(event: "drain", listener: () => void): this;
addListener(event: "end", listener: () => void): this;
addListener(event: "error", listener: (err: Error) => void): this;
addListener(
event: "lookup",
listener: (err: Error, address: string, family: string | number, host: string) => void,
): this;
addListener(event: "ready", listener: () => void): this;
addListener(event: "timeout", listener: () => void): this;
emit(event: string | symbol, ...args: any[]): boolean;
emit(event: "close", hadError: boolean): boolean;
emit(event: "connect"): boolean;
emit(event: "data", data: Buffer): boolean;
emit(event: "drain"): boolean;
emit(event: "end"): boolean;
emit(event: "error", err: Error): boolean;
emit(event: "lookup", err: Error, address: string, family: string | number, host: string): boolean;
emit(event: "ready"): boolean;
emit(event: "timeout"): boolean;
on(event: string, listener: (...args: any[]) => void): this;
on(event: "close", listener: (hadError: boolean) => void): this;
on(event: "connect", listener: () => void): this;
on(event: "data", listener: (data: Buffer) => void): this;
on(event: "drain", listener: () => void): this;
on(event: "end", listener: () => void): this;
on(event: "error", listener: (err: Error) => void): this;
on(
event: "lookup",
listener: (err: Error, address: string, family: string | number, host: string) => void,
): this;
on(event: "ready", listener: () => void): this;
on(event: "timeout", listener: () => void): this;
once(event: string, listener: (...args: any[]) => void): this;
once(event: "close", listener: (hadError: boolean) => void): this;
once(event: "connect", listener: () => void): this;
once(event: "data", listener: (data: Buffer) => void): this;
once(event: "drain", listener: () => void): this;
once(event: "end", listener: () => void): this;
once(event: "error", listener: (err: Error) => void): this;
once(
event: "lookup",
listener: (err: Error, address: string, family: string | number, host: string) => void,
): this;
once(event: "ready", listener: () => void): this;
once(event: "timeout", listener: () => void): this;
prependListener(event: string, listener: (...args: any[]) => void): this;
prependListener(event: "close", listener: (hadError: boolean) => void): this;
prependListener(event: "connect", listener: () => void): this;
prependListener(event: "data", listener: (data: Buffer) => void): this;
prependListener(event: "drain", listener: () => void): this;
prependListener(event: "end", listener: () => void): this;
prependListener(event: "error", listener: (err: Error) => void): this;
prependListener(
event: "lookup",
listener: (err: Error, address: string, family: string | number, host: string) => void,
): this;
prependListener(event: "ready", listener: () => void): this;
prependListener(event: "timeout", listener: () => void): this;
prependOnceListener(event: string, listener: (...args: any[]) => void): this;
prependOnceListener(event: "close", listener: (hadError: boolean) => void): this;
prependOnceListener(event: "connect", listener: () => void): this;
prependOnceListener(event: "data", listener: (data: Buffer) => void): this;
prependOnceListener(event: "drain", listener: () => void): this;
prependOnceListener(event: "end", listener: () => void): this;
prependOnceListener(event: "error", listener: (err: Error) => void): this;
prependOnceListener(
event: "lookup",
listener: (err: Error, address: string, family: string | number, host: string) => void,
): this;
prependOnceListener(event: "ready", listener: () => void): this;
prependOnceListener(event: "timeout", listener: () => void): this;
}
interface ListenOptions extends Abortable {
port?: number | undefined;
host?: string | undefined;
backlog?: number | undefined;
path?: string | undefined;
exclusive?: boolean | undefined;
readableAll?: boolean | undefined;
writableAll?: boolean | undefined;
/**
* @default false
*/
ipv6Only?: boolean | undefined;
}
interface ServerOpts {
/**
* Indicates whether half-opened TCP connections are allowed.
* @default false
*/
allowHalfOpen?: boolean | undefined;
/**
* Indicates whether the socket should be paused on incoming connections.
* @default false
*/
pauseOnConnect?: boolean | undefined;
/**
* If set to `true`, it disables the use of Nagle's algorithm immediately after a new incoming connection is received.
* @default false
* @since v16.5.0
*/
noDelay?: boolean | undefined;
/**
* If set to `true`, it enables keep-alive functionality on the socket immediately after a new incoming connection is received,
* similarly on what is done in `socket.setKeepAlive([enable][, initialDelay])`.
* @default false
* @since v16.5.0
*/
keepAlive?: boolean | undefined;
/**
* If set to a positive number, it sets the initial delay before the first keepalive probe is sent on an idle socket.
* @default 0
* @since v16.5.0
*/
keepAliveInitialDelay?: number | undefined;
}
interface DropArgument {
localAddress?: string;
localPort?: number;
localFamily?: string;
remoteAddress?: string;
remotePort?: number;
remoteFamily?: string;
}
/**
* This class is used to create a TCP or `IPC` server.
* @since v0.1.90
*/
class Server extends EventEmitter {
constructor(connectionListener?: (socket: Socket) => void);
constructor(options?: ServerOpts, connectionListener?: (socket: Socket) => void);
/**
* Start a server listening for connections. A `net.Server` can be a TCP or
* an `IPC` server depending on what it listens to.
*
* Possible signatures:
*
* * `server.listen(handle[, backlog][, callback])`
* * `server.listen(options[, callback])`
* * `server.listen(path[, backlog][, callback])` for `IPC` servers
* * `server.listen([port[, host[, backlog]]][, callback])` for TCP servers
*
* This function is asynchronous. When the server starts listening, the `'listening'` event will be emitted. The last parameter `callback`will be added as a listener for the `'listening'`
* event.
*
* All `listen()` methods can take a `backlog` parameter to specify the maximum
* length of the queue of pending connections. The actual length will be determined
* by the OS through sysctl settings such as `tcp_max_syn_backlog` and `somaxconn`on Linux. The default value of this parameter is 511 (not 512).
*
* All {@link Socket} are set to `SO_REUSEADDR` (see [`socket(7)`](https://man7.org/linux/man-pages/man7/socket.7.html) for
* details).
*
* The `server.listen()` method can be called again if and only if there was an
* error during the first `server.listen()` call or `server.close()` has been
* called. Otherwise, an `ERR_SERVER_ALREADY_LISTEN` error will be thrown.
*
* One of the most common errors raised when listening is `EADDRINUSE`.
* This happens when another server is already listening on the requested`port`/`path`/`handle`. One way to handle this would be to retry
* after a certain amount of time:
*
* ```js
* server.on('error', (e) => {
* if (e.code === 'EADDRINUSE') {
* console.log('Address in use, retrying...');
* setTimeout(() => {
* server.close();
* server.listen(PORT, HOST);
* }, 1000);
* }
* });
* ```
*/
listen(port?: number, hostname?: string, backlog?: number, listeningListener?: () => void): this;
listen(port?: number, hostname?: string, listeningListener?: () => void): this;
listen(port?: number, backlog?: number, listeningListener?: () => void): this;
listen(port?: number, listeningListener?: () => void): this;
listen(path: string, backlog?: number, listeningListener?: () => void): this;
listen(path: string, listeningListener?: () => void): this;
listen(options: ListenOptions, listeningListener?: () => void): this;
listen(handle: any, backlog?: number, listeningListener?: () => void): this;
listen(handle: any, listeningListener?: () => void): this;
/**
* Stops the server from accepting new connections and keeps existing
* connections. This function is asynchronous, the server is finally closed
* when all connections are ended and the server emits a `'close'` event.
* The optional `callback` will be called once the `'close'` event occurs. Unlike
* that event, it will be called with an `Error` as its only argument if the server
* was not open when it was closed.
* @since v0.1.90
* @param callback Called when the server is closed.
*/
close(callback?: (err?: Error) => void): this;
/**
* Returns the bound `address`, the address `family` name, and `port` of the server
* as reported by the operating system if listening on an IP socket
* (useful to find which port was assigned when getting an OS-assigned address):`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`.
*
* For a server listening on a pipe or Unix domain socket, the name is returned
* as a string.
*
* ```js
* const server = net.createServer((socket) => {
* socket.end('goodbye\n');
* }).on('error', (err) => {
* // Handle errors here.
* throw err;
* });
*
* // Grab an arbitrary unused port.
* server.listen(() => {
* console.log('opened server on', server.address());
* });
* ```
*
* `server.address()` returns `null` before the `'listening'` event has been
* emitted or after calling `server.close()`.
* @since v0.1.90
*/
address(): AddressInfo | string | null;
/**
* Asynchronously get the number of concurrent connections on the server. Works
* when sockets were sent to forks.
*
* Callback should take two arguments `err` and `count`.
* @since v0.9.7
*/
getConnections(cb: (error: Error | null, count: number) => void): void;
/**
* Opposite of `unref()`, calling `ref()` on a previously `unref`ed server will _not_ let the program exit if it's the only server left (the default behavior).
* If the server is `ref`ed calling `ref()` again will have no effect.
* @since v0.9.1
*/
ref(): this;
/**
* Calling `unref()` on a server will allow the program to exit if this is the only
* active server in the event system. If the server is already `unref`ed calling`unref()` again will have no effect.
* @since v0.9.1
*/
unref(): this;
/**
* Set this property to reject connections when the server's connection count gets
* high.
*
* It is not recommended to use this option once a socket has been sent to a child
* with `child_process.fork()`.
* @since v0.2.0
*/
maxConnections: number;
connections: number;
/**
* Indicates whether or not the server is listening for connections.
* @since v5.7.0
*/
listening: boolean;
/**
* events.EventEmitter
* 1. close
* 2. connection
* 3. error
* 4. listening
* 5. drop
*/
addListener(event: string, listener: (...args: any[]) => void): this;
addListener(event: "close", listener: () => void): this;
addListener(event: "connection", listener: (socket: Socket) => void): this;
addListener(event: "error", listener: (err: Error) => void): this;
addListener(event: "listening", listener: () => void): this;
addListener(event: "drop", listener: (data?: DropArgument) => void): this;
emit(event: string | symbol, ...args: any[]): boolean;
emit(event: "close"): boolean;
emit(event: "connection", socket: Socket): boolean;
emit(event: "error", err: Error): boolean;
emit(event: "listening"): boolean;
emit(event: "drop", data?: DropArgument): boolean;
on(event: string, listener: (...args: any[]) => void): this;
on(event: "close", listener: () => void): this;
on(event: "connection", listener: (socket: Socket) => void): this;
on(event: "error", listener: (err: Error) => void): this;
on(event: "listening", listener: () => void): this;
on(event: "drop", listener: (data?: DropArgument) => void): this;
once(event: string, listener: (...args: any[]) => void): this;
once(event: "close", listener: () => void): this;
once(event: "connection", listener: (socket: Socket) => void): this;
once(event: "error", listener: (err: Error) => void): this;
once(event: "listening", listener: () => void): this;
once(event: "drop", listener: (data?: DropArgument) => void): this;
prependListener(event: string, listener: (...args: any[]) => void): this;
prependListener(event: "close", listener: () => void): this;
prependListener(event: "connection", listener: (socket: Socket) => void): this;
prependListener(event: "error", listener: (err: Error) => void): this;
prependListener(event: "listening", listener: () => void): this;
prependListener(event: "drop", listener: (data?: DropArgument) => void): this;
prependOnceListener(event: string, listener: (...args: any[]) => void): this;
prependOnceListener(event: "close", listener: () => void): this;
prependOnceListener(event: "connection", listener: (socket: Socket) => void): this;
prependOnceListener(event: "error", listener: (err: Error) => void): this;
prependOnceListener(event: "listening", listener: () => void): this;
prependOnceListener(event: "drop", listener: (data?: DropArgument) => void): this;
/**
* Calls {@link Server.close()} and returns a promise that fulfills when the server has closed.
* @since v18.18.0
*/
[Symbol.asyncDispose](): Promise<void>;
}
type IPVersion = "ipv4" | "ipv6";
/**
* The `BlockList` object can be used with some network APIs to specify rules for
* disabling inbound or outbound access to specific IP addresses, IP ranges, or
* IP subnets.
* @since v15.0.0, v14.18.0
*/
class BlockList {
/**
* Adds a rule to block the given IP address.
* @since v15.0.0, v14.18.0
* @param address An IPv4 or IPv6 address.
* @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
*/
addAddress(address: string, type?: IPVersion): void;
addAddress(address: SocketAddress): void;
/**
* Adds a rule to block a range of IP addresses from `start` (inclusive) to`end` (inclusive).
* @since v15.0.0, v14.18.0
* @param start The starting IPv4 or IPv6 address in the range.
* @param end The ending IPv4 or IPv6 address in the range.
* @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
*/
addRange(start: string, end: string, type?: IPVersion): void;
addRange(start: SocketAddress, end: SocketAddress): void;
/**
* Adds a rule to block a range of IP addresses specified as a subnet mask.
* @since v15.0.0, v14.18.0
* @param net The network IPv4 or IPv6 address.
* @param prefix The number of CIDR prefix bits. For IPv4, this must be a value between `0` and `32`. For IPv6, this must be between `0` and `128`.
* @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
*/
addSubnet(net: SocketAddress, prefix: number): void;
addSubnet(net: string, prefix: number, type?: IPVersion): void;
/**
* Returns `true` if the given IP address matches any of the rules added to the`BlockList`.
*
* ```js
* const blockList = new net.BlockList();
* blockList.addAddress('123.123.123.123');
* blockList.addRange('10.0.0.1', '10.0.0.10');
* blockList.addSubnet('8592:757c:efae:4e45::', 64, 'ipv6');
*
* console.log(blockList.check('123.123.123.123')); // Prints: true
* console.log(blockList.check('10.0.0.3')); // Prints: true
* console.log(blockList.check('222.111.111.222')); // Prints: false
*
* // IPv6 notation for IPv4 addresses works:
* console.log(blockList.check('::ffff:7b7b:7b7b', 'ipv6')); // Prints: true
* console.log(blockList.check('::ffff:123.123.123.123', 'ipv6')); // Prints: true
* ```
* @since v15.0.0, v14.18.0
* @param address The IP address to check
* @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
*/
check(address: SocketAddress): boolean;
check(address: string, type?: IPVersion): boolean;
}
interface TcpNetConnectOpts extends TcpSocketConnectOpts, SocketConstructorOpts {
timeout?: number | undefined;
}
interface IpcNetConnectOpts extends IpcSocketConnectOpts, SocketConstructorOpts {
timeout?: number | undefined;
}
type NetConnectOpts = TcpNetConnectOpts | IpcNetConnectOpts;
/**
* Creates a new TCP or `IPC` server.
*
* If `allowHalfOpen` is set to `true`, when the other end of the socket
* signals the end of transmission, the server will only send back the end of
* transmission when `socket.end()` is explicitly called. For example, in the
* context of TCP, when a FIN packed is received, a FIN packed is sent
* back only when `socket.end()` is explicitly called. Until then the
* connection is half-closed (non-readable but still writable). See `'end'` event and [RFC 1122](https://tools.ietf.org/html/rfc1122) (section 4.2.2.13) for more information.
*
* If `pauseOnConnect` is set to `true`, then the socket associated with each
* incoming connection will be paused, and no data will be read from its handle.
* This allows connections to be passed between processes without any data being
* read by the original process. To begin reading data from a paused socket, call `socket.resume()`.
*
* The server can be a TCP server or an `IPC` server, depending on what it `listen()` to.
*
* Here is an example of a TCP echo server which listens for connections
* on port 8124:
*
* ```js
* const net = require('net');
* const server = net.createServer((c) => {
* // 'connection' listener.
* console.log('client connected');
* c.on('end', () => {
* console.log('client disconnected');
* });
* c.write('hello\r\n');
* c.pipe(c);
* });
* server.on('error', (err) => {
* throw err;
* });
* server.listen(8124, () => {
* console.log('server bound');
* });
* ```
*
* Test this by using `telnet`:
*
* ```console
* $ telnet localhost 8124
* ```
*
* To listen on the socket `/tmp/echo.sock`:
*
* ```js
* server.listen('/tmp/echo.sock', () => {
* console.log('server bound');
* });
* ```
*
* Use `nc` to connect to a Unix domain socket server:
*
* ```console
* $ nc -U /tmp/echo.sock
* ```
* @since v0.5.0
* @param connectionListener Automatically set as a listener for the {@link 'connection'} event.
*/
function createServer(connectionListener?: (socket: Socket) => void): Server;
function createServer(options?: ServerOpts, connectionListener?: (socket: Socket) => void): Server;
/**
* Aliases to {@link createConnection}.
*
* Possible signatures:
*
* * {@link connect}
* * {@link connect} for `IPC` connections.
* * {@link connect} for TCP connections.
*/
function connect(options: NetConnectOpts, connectionListener?: () => void): Socket;
function connect(port: number, host?: string, connectionListener?: () => void): Socket;
function connect(path: string, connectionListener?: () => void): Socket;
/**
* A factory function, which creates a new {@link Socket},
* immediately initiates connection with `socket.connect()`,
* then returns the `net.Socket` that starts the connection.
*
* When the connection is established, a `'connect'` event will be emitted
* on the returned socket. The last parameter `connectListener`, if supplied,
* will be added as a listener for the `'connect'` event **once**.
*
* Possible signatures:
*
* * {@link createConnection}
* * {@link createConnection} for `IPC` connections.
* * {@link createConnection} for TCP connections.
*
* The {@link connect} function is an alias to this function.
*/
function createConnection(options: NetConnectOpts, connectionListener?: () => void): Socket;
function createConnection(port: number, host?: string, connectionListener?: () => void): Socket;
function createConnection(path: string, connectionListener?: () => void): Socket;
/**
* Returns `6` if `input` is an IPv6 address. Returns `4` if `input` is an IPv4
* address in [dot-decimal notation](https://en.wikipedia.org/wiki/Dot-decimal_notation) with no leading zeroes. Otherwise, returns`0`.
*
* ```js
* net.isIP('::1'); // returns 6
* net.isIP('127.0.0.1'); // returns 4
* net.isIP('127.000.000.001'); // returns 0
* net.isIP('127.0.0.1/24'); // returns 0
* net.isIP('fhqwhgads'); // returns 0
* ```
* @since v0.3.0
*/
function isIP(input: string): number;
/**
* Returns `true` if `input` is an IPv4 address in [dot-decimal notation](https://en.wikipedia.org/wiki/Dot-decimal_notation) with no
* leading zeroes. Otherwise, returns `false`.
*
* ```js
* net.isIPv4('127.0.0.1'); // returns true
* net.isIPv4('127.000.000.001'); // returns false
* net.isIPv4('127.0.0.1/24'); // returns false
* net.isIPv4('fhqwhgads'); // returns false
* ```
* @since v0.3.0
*/
function isIPv4(input: string): boolean;
/**
* Returns `true` if `input` is an IPv6 address. Otherwise, returns `false`.
*
* ```js
* net.isIPv6('::1'); // returns true
* net.isIPv6('fhqwhgads'); // returns false
* ```
* @since v0.3.0
*/
function isIPv6(input: string): boolean;
interface SocketAddressInitOptions {
/**
* The network address as either an IPv4 or IPv6 string.
* @default 127.0.0.1
*/
address?: string | undefined;
/**
* @default `'ipv4'`
*/
family?: IPVersion | undefined;
/**
* An IPv6 flow-label used only if `family` is `'ipv6'`.
* @default 0
*/
flowlabel?: number | undefined;
/**
* An IP port.
* @default 0
*/
port?: number | undefined;
}
/**
* @since v15.14.0, v14.18.0
*/
class SocketAddress {
constructor(options: SocketAddressInitOptions);
/**
* @since v15.14.0, v14.18.0
*/
readonly address: string;
/**
* Either \`'ipv4'\` or \`'ipv6'\`.
* @since v15.14.0, v14.18.0
*/
readonly family: IPVersion;
/**
* @since v15.14.0, v14.18.0
*/
readonly port: number;
/**
* @since v15.14.0, v14.18.0
*/
readonly flowlabel: number;
}
}
declare module "node:net" {
export * from "net";
}
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