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http.d.ts
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/**
* To use the HTTP server and client one must `require('http')`.
*
* The HTTP interfaces in Node.js are designed to support many features
* of the protocol which have been traditionally difficult to use.
* In particular, large, possibly chunk-encoded, messages. The interface is
* careful to never buffer entire requests or responses, so the
* user is able to stream data.
*
* HTTP message headers are represented by an object like this:
*
* ```js
* { 'content-length': '123',
* 'content-type': 'text/plain',
* 'connection': 'keep-alive',
* 'host': 'mysite.com',
* 'accept': '*' }
* ```
*
* Keys are lowercased. Values are not modified.
*
* In order to support the full spectrum of possible HTTP applications, the Node.js
* HTTP API is very low-level. It deals with stream handling and message
* parsing only. It parses a message into headers and body but it does not
* parse the actual headers or the body.
*
* See `message.headers` for details on how duplicate headers are handled.
*
* The raw headers as they were received are retained in the `rawHeaders`property, which is an array of `[key, value, key2, value2, ...]`. For
* example, the previous message header object might have a `rawHeaders`list like the following:
*
* ```js
* [ 'ConTent-Length', '123456',
* 'content-LENGTH', '123',
* 'content-type', 'text/plain',
* 'CONNECTION', 'keep-alive',
* 'Host', 'mysite.com',
* 'accepT', '*' ]
* ```
* @see [source](https://github.com/nodejs/node/blob/v16.9.0/lib/http.js)
*/
declare module 'http' {
import * as stream from 'node:stream';
import { URL } from 'node:url';
import { Socket, Server as NetServer } from 'node:net';
// incoming headers will never contain number
interface IncomingHttpHeaders extends NodeJS.Dict<string | string[]> {
accept?: string | undefined;
'accept-language'?: string | undefined;
'accept-patch'?: string | undefined;
'accept-ranges'?: string | undefined;
'access-control-allow-credentials'?: string | undefined;
'access-control-allow-headers'?: string | undefined;
'access-control-allow-methods'?: string | undefined;
'access-control-allow-origin'?: string | undefined;
'access-control-expose-headers'?: string | undefined;
'access-control-max-age'?: string | undefined;
'access-control-request-headers'?: string | undefined;
'access-control-request-method'?: string | undefined;
age?: string | undefined;
allow?: string | undefined;
'alt-svc'?: string | undefined;
authorization?: string | undefined;
'cache-control'?: string | undefined;
connection?: string | undefined;
'content-disposition'?: string | undefined;
'content-encoding'?: string | undefined;
'content-language'?: string | undefined;
'content-length'?: string | undefined;
'content-location'?: string | undefined;
'content-range'?: string | undefined;
'content-type'?: string | undefined;
cookie?: string | undefined;
date?: string | undefined;
etag?: string | undefined;
expect?: string | undefined;
expires?: string | undefined;
forwarded?: string | undefined;
from?: string | undefined;
host?: string | undefined;
'if-match'?: string | undefined;
'if-modified-since'?: string | undefined;
'if-none-match'?: string | undefined;
'if-unmodified-since'?: string | undefined;
'last-modified'?: string | undefined;
location?: string | undefined;
origin?: string | undefined;
pragma?: string | undefined;
'proxy-authenticate'?: string | undefined;
'proxy-authorization'?: string | undefined;
'public-key-pins'?: string | undefined;
range?: string | undefined;
referer?: string | undefined;
'retry-after'?: string | undefined;
'sec-websocket-accept'?: string | undefined;
'sec-websocket-extensions'?: string | undefined;
'sec-websocket-key'?: string | undefined;
'sec-websocket-protocol'?: string | undefined;
'sec-websocket-version'?: string | undefined;
'set-cookie'?: string[] | undefined;
'strict-transport-security'?: string | undefined;
tk?: string | undefined;
trailer?: string | undefined;
'transfer-encoding'?: string | undefined;
upgrade?: string | undefined;
'user-agent'?: string | undefined;
vary?: string | undefined;
via?: string | undefined;
warning?: string | undefined;
'www-authenticate'?: string | undefined;
}
// outgoing headers allows numbers (as they are converted internally to strings)
type OutgoingHttpHeader = number | string | string[];
interface OutgoingHttpHeaders extends NodeJS.Dict<OutgoingHttpHeader> {}
interface ClientRequestArgs {
abort?: AbortSignal | undefined;
protocol?: string | null | undefined;
host?: string | null | undefined;
hostname?: string | null | undefined;
family?: number | undefined;
port?: number | string | null | undefined;
defaultPort?: number | string | undefined;
localAddress?: string | undefined;
socketPath?: string | undefined;
/**
* @default 8192
*/
maxHeaderSize?: number | undefined;
method?: string | undefined;
path?: string | null | undefined;
headers?: OutgoingHttpHeaders | undefined;
auth?: string | null | undefined;
agent?: Agent | boolean | undefined;
_defaultAgent?: Agent | undefined;
timeout?: number | undefined;
setHost?: boolean | undefined;
// https://github.com/nodejs/node/blob/master/lib/_http_client.js#L278
createConnection?: ((options: ClientRequestArgs, oncreate: (err: Error, socket: Socket) => void) => Socket) | undefined;
}
interface ServerOptions {
IncomingMessage?: typeof IncomingMessage | undefined;
ServerResponse?: typeof ServerResponse | undefined;
/**
* Optionally overrides the value of
* `--max-http-header-size` for requests received by this server, i.e.
* the maximum length of request headers in bytes.
* @default 8192
*/
maxHeaderSize?: number | undefined;
/**
* Use an insecure HTTP parser that accepts invalid HTTP headers when true.
* Using the insecure parser should be avoided.
* See --insecure-http-parser for more information.
* @default false
*/
insecureHTTPParser?: boolean | undefined;
}
type RequestListener = (req: IncomingMessage, res: ServerResponse) => void;
/**
* @since v0.1.17
*/
class Server extends NetServer {
constructor(requestListener?: RequestListener);
constructor(options: ServerOptions, requestListener?: RequestListener);
/**
* Sets the timeout value for sockets, and emits a `'timeout'` event on
* the Server object, passing the socket as an argument, if a timeout
* occurs.
*
* If there is a `'timeout'` event listener on the Server object, then it
* will be called with the timed-out socket as an argument.
*
* By default, the Server does not timeout sockets. However, if a callback
* is assigned to the Server's `'timeout'` event, timeouts must be handled
* explicitly.
* @since v0.9.12
* @param [msecs=0 (no timeout)]
*/
setTimeout(msecs?: number, callback?: () => void): this;
setTimeout(callback: () => void): this;
/**
* Limits maximum incoming headers count. If set to 0, no limit will be applied.
* @since v0.7.0
*/
maxHeadersCount: number | null;
/**
* The maximum number of requests socket can handle
* before closing keep alive connection.
*
* A value of `0` will disable the limit.
*
* When the limit is reached it will set the `Connection` header value to `close`,
* but will not actually close the connection, subsequent requests sent
* after the limit is reached will get `503 Service Unavailable` as a response.
* @since v16.10.0
*/
maxRequestsPerSocket: number | null;
/**
* The number of milliseconds of inactivity before a socket is presumed
* to have timed out.
*
* A value of `0` will disable the timeout behavior on incoming connections.
*
* The socket timeout logic is set up on connection, so changing this
* value only affects new connections to the server, not any existing connections.
* @since v0.9.12
*/
timeout: number;
/**
* Limit the amount of time the parser will wait to receive the complete HTTP
* headers.
*
* In case of inactivity, the rules defined in `server.timeout` apply. However,
* that inactivity based timeout would still allow the connection to be kept open
* if the headers are being sent very slowly (by default, up to a byte per 2
* minutes). In order to prevent this, whenever header data arrives an additional
* check is made that more than `server.headersTimeout` milliseconds has not
* passed since the connection was established. If the check fails, a `'timeout'`event is emitted on the server object, and (by default) the socket is destroyed.
* See `server.timeout` for more information on how timeout behavior can be
* customized.
* @since v11.3.0, v10.14.0
*/
headersTimeout: number;
/**
* The number of milliseconds of inactivity a server needs to wait for additional
* incoming data, after it has finished writing the last response, before a socket
* will be destroyed. If the server receives new data before the keep-alive
* timeout has fired, it will reset the regular inactivity timeout, i.e.,`server.timeout`.
*
* A value of `0` will disable the keep-alive timeout behavior on incoming
* connections.
* A value of `0` makes the http server behave similarly to Node.js versions prior
* to 8.0.0, which did not have a keep-alive timeout.
*
* The socket timeout logic is set up on connection, so changing this value only
* affects new connections to the server, not any existing connections.
* @since v8.0.0
*/
keepAliveTimeout: number;
/**
* Sets the timeout value in milliseconds for receiving the entire request from
* the client.
*
* If the timeout expires, the server responds with status 408 without
* forwarding the request to the request listener and then closes the connection.
*
* It must be set to a non-zero value (e.g. 120 seconds) to protect against
* potential Denial-of-Service attacks in case the server is deployed without a
* reverse proxy in front.
* @since v14.11.0
*/
requestTimeout: number;
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: 'checkContinue', listener: RequestListener): this;
addListener(event: 'checkExpectation', listener: RequestListener): this;
addListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
addListener(event: 'connect', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
addListener(event: 'request', listener: RequestListener): this;
addListener(event: 'upgrade', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
emit(event: string, ...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: 'checkContinue', req: IncomingMessage, res: ServerResponse): boolean;
emit(event: 'checkExpectation', req: IncomingMessage, res: ServerResponse): boolean;
emit(event: 'clientError', err: Error, socket: stream.Duplex): boolean;
emit(event: 'connect', req: IncomingMessage, socket: stream.Duplex, head: Buffer): boolean;
emit(event: 'request', req: IncomingMessage, res: ServerResponse): boolean;
emit(event: 'upgrade', req: IncomingMessage, socket: stream.Duplex, head: Buffer): 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: 'checkContinue', listener: RequestListener): this;
on(event: 'checkExpectation', listener: RequestListener): this;
on(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
on(event: 'connect', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
on(event: 'request', listener: RequestListener): this;
on(event: 'upgrade', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => 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: 'checkContinue', listener: RequestListener): this;
once(event: 'checkExpectation', listener: RequestListener): this;
once(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
once(event: 'connect', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
once(event: 'request', listener: RequestListener): this;
once(event: 'upgrade', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => 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: 'checkContinue', listener: RequestListener): this;
prependListener(event: 'checkExpectation', listener: RequestListener): this;
prependListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
prependListener(event: 'connect', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
prependListener(event: 'request', listener: RequestListener): this;
prependListener(event: 'upgrade', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => 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: 'checkContinue', listener: RequestListener): this;
prependOnceListener(event: 'checkExpectation', listener: RequestListener): this;
prependOnceListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
prependOnceListener(event: 'connect', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
prependOnceListener(event: 'request', listener: RequestListener): this;
prependOnceListener(event: 'upgrade', listener: (req: IncomingMessage, socket: stream.Duplex, head: Buffer) => void): this;
}
/**
* This class serves as the parent class of {@link ClientRequest} and {@link ServerResponse}. It is an abstract of outgoing message from
* the perspective of the participants of HTTP transaction.
* @since v0.1.17
*/
class OutgoingMessage extends stream.Writable {
readonly req: IncomingMessage;
chunkedEncoding: boolean;
shouldKeepAlive: boolean;
useChunkedEncodingByDefault: boolean;
sendDate: boolean;
/**
* @deprecated Use `writableEnded` instead.
*/
finished: boolean;
/**
* Read-only. `true` if the headers were sent, otherwise `false`.
* @since v0.9.3
*/
readonly headersSent: boolean;
/**
* Aliases of `outgoingMessage.socket`
* @since v0.3.0
* @deprecated Since v15.12.0 - Use `socket` instead.
*/
readonly connection: Socket | null;
/**
* Reference to the underlying socket. Usually, users will not want to access
* this property.
*
* After calling `outgoingMessage.end()`, this property will be nulled.
* @since v0.3.0
*/
readonly socket: Socket | null;
constructor();
/**
* Once a socket is associated with the message and is connected,`socket.setTimeout()` will be called with `msecs` as the first parameter.
* @since v0.9.12
* @param callback Optional function to be called when a timeout occurs. Same as binding to the `timeout` event.
*/
setTimeout(msecs: number, callback?: () => void): this;
/**
* Sets a single header value for the header object.
* @since v0.4.0
* @param name Header name
* @param value Header value
*/
setHeader(name: string, value: number | string | ReadonlyArray<string>): this;
/**
* Gets the value of HTTP header with the given name. If such a name doesn't
* exist in message, it will be `undefined`.
* @since v0.4.0
* @param name Name of header
*/
getHeader(name: string): number | string | string[] | undefined;
/**
* Returns a shallow copy of the current outgoing headers. Since a shallow
* copy is used, array values may be mutated without additional calls to
* various header-related HTTP module methods. The keys of the returned
* object are the header names and the values are the respective header
* values. All header names are lowercase.
*
* The object returned by the `outgoingMessage.getHeaders()` method does
* not prototypically inherit from the JavaScript Object. This means that
* typical Object methods such as `obj.toString()`, `obj.hasOwnProperty()`,
* and others are not defined and will not work.
*
* ```js
* outgoingMessage.setHeader('Foo', 'bar');
* outgoingMessage.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
*
* const headers = outgoingMessage.getHeaders();
* // headers === { foo: 'bar', 'set-cookie': ['foo=bar', 'bar=baz'] }
* ```
* @since v8.0.0
*/
getHeaders(): OutgoingHttpHeaders;
/**
* Returns an array of names of headers of the outgoing outgoingMessage. All
* names are lowercase.
* @since v8.0.0
*/
getHeaderNames(): string[];
/**
* Returns `true` if the header identified by `name` is currently set in the
* outgoing headers. The header name is case-insensitive.
*
* ```js
* const hasContentType = outgoingMessage.hasHeader('content-type');
* ```
* @since v8.0.0
*/
hasHeader(name: string): boolean;
/**
* Removes a header that is queued for implicit sending.
*
* ```js
* outgoingMessage.removeHeader('Content-Encoding');
* ```
* @since v0.4.0
*/
removeHeader(name: string): void;
/**
* Adds HTTP trailers (headers but at the end of the message) to the message.
*
* Trailers are **only** be emitted if the message is chunked encoded. If not,
* the trailer will be silently discarded.
*
* HTTP requires the `Trailer` header to be sent to emit trailers,
* with a list of header fields in its value, e.g.
*
* ```js
* message.writeHead(200, { 'Content-Type': 'text/plain',
* 'Trailer': 'Content-MD5' });
* message.write(fileData);
* message.addTrailers({ 'Content-MD5': '7895bf4b8828b55ceaf47747b4bca667' });
* message.end();
* ```
*
* Attempting to set a header field name or value that contains invalid characters
* will result in a `TypeError` being thrown.
* @since v0.3.0
*/
addTrailers(headers: OutgoingHttpHeaders | ReadonlyArray<[string, string]>): void;
/**
* Compulsorily flushes the message headers
*
* For efficiency reason, Node.js normally buffers the message headers
* until `outgoingMessage.end()` is called or the first chunk of message data
* is written. It then tries to pack the headers and data into a single TCP
* packet.
*
* It is usually desired (it saves a TCP round-trip), but not when the first
* data is not sent until possibly much later. `outgoingMessage.flushHeaders()`bypasses the optimization and kickstarts the request.
* @since v1.6.0
*/
flushHeaders(): void;
}
/**
* This object is created internally by an HTTP server, not by the user. It is
* passed as the second parameter to the `'request'` event.
* @since v0.1.17
*/
class ServerResponse extends OutgoingMessage {
/**
* When using implicit headers (not calling `response.writeHead()` explicitly),
* this property controls the status code that will be sent to the client when
* the headers get flushed.
*
* ```js
* response.statusCode = 404;
* ```
*
* After response header was sent to the client, this property indicates the
* status code which was sent out.
* @since v0.4.0
*/
statusCode: number;
/**
* When using implicit headers (not calling `response.writeHead()` explicitly),
* this property controls the status message that will be sent to the client when
* the headers get flushed. If this is left as `undefined` then the standard
* message for the status code will be used.
*
* ```js
* response.statusMessage = 'Not found';
* ```
*
* After response header was sent to the client, this property indicates the
* status message which was sent out.
* @since v0.11.8
*/
statusMessage: string;
constructor(req: IncomingMessage);
assignSocket(socket: Socket): void;
detachSocket(socket: Socket): void;
/**
* Sends a HTTP/1.1 100 Continue message to the client, indicating that
* the request body should be sent. See the `'checkContinue'` event on`Server`.
* @since v0.3.0
*/
writeContinue(callback?: () => void): void;
/**
* Sends a response header to the request. The status code is a 3-digit HTTP
* status code, like `404`. The last argument, `headers`, are the response headers.
* Optionally one can give a human-readable `statusMessage` as the second
* argument.
*
* `headers` may be an `Array` where the keys and values are in the same list.
* It is _not_ a list of tuples. So, the even-numbered offsets are key values,
* and the odd-numbered offsets are the associated values. The array is in the same
* format as `request.rawHeaders`.
*
* Returns a reference to the `ServerResponse`, so that calls can be chained.
*
* ```js
* const body = 'hello world';
* response
* .writeHead(200, {
* 'Content-Length': Buffer.byteLength(body),
* 'Content-Type': 'text/plain'
* })
* .end(body);
* ```
*
* This method must only be called once on a message and it must
* be called before `response.end()` is called.
*
* If `response.write()` or `response.end()` are called before calling
* this, the implicit/mutable headers will be calculated and call this function.
*
* When headers have been set with `response.setHeader()`, they will be merged
* with any headers passed to `response.writeHead()`, with the headers passed
* to `response.writeHead()` given precedence.
*
* If this method is called and `response.setHeader()` has not been called,
* it will directly write the supplied header values onto the network channel
* without caching internally, and the `response.getHeader()` on the header
* will not yield the expected result. If progressive population of headers is
* desired with potential future retrieval and modification, use `response.setHeader()` instead.
*
* ```js
* // Returns content-type = text/plain
* const server = http.createServer((req, res) => {
* res.setHeader('Content-Type', 'text/html');
* res.setHeader('X-Foo', 'bar');
* res.writeHead(200, { 'Content-Type': 'text/plain' });
* res.end('ok');
* });
* ```
*
* `Content-Length` is given in bytes, not characters. Use `Buffer.byteLength()` to determine the length of the body in bytes. Node.js
* does not check whether `Content-Length` and the length of the body which has
* been transmitted are equal or not.
*
* Attempting to set a header field name or value that contains invalid characters
* will result in a `TypeError` being thrown.
* @since v0.1.30
*/
writeHead(statusCode: number, statusMessage?: string, headers?: OutgoingHttpHeaders | OutgoingHttpHeader[]): this;
writeHead(statusCode: number, headers?: OutgoingHttpHeaders | OutgoingHttpHeader[]): this;
/**
* Sends a HTTP/1.1 102 Processing message to the client, indicating that
* the request body should be sent.
* @since v10.0.0
*/
writeProcessing(): void;
}
interface InformationEvent {
statusCode: number;
statusMessage: string;
httpVersion: string;
httpVersionMajor: number;
httpVersionMinor: number;
headers: IncomingHttpHeaders;
rawHeaders: string[];
}
/**
* This object is created internally and returned from {@link request}. It
* represents an _in-progress_ request whose header has already been queued. The
* header is still mutable using the `setHeader(name, value)`,`getHeader(name)`, `removeHeader(name)` API. The actual header will
* be sent along with the first data chunk or when calling `request.end()`.
*
* To get the response, add a listener for `'response'` to the request object.`'response'` will be emitted from the request object when the response
* headers have been received. The `'response'` event is executed with one
* argument which is an instance of {@link IncomingMessage}.
*
* During the `'response'` event, one can add listeners to the
* response object; particularly to listen for the `'data'` event.
*
* If no `'response'` handler is added, then the response will be
* entirely discarded. However, if a `'response'` event handler is added,
* then the data from the response object **must** be consumed, either by
* calling `response.read()` whenever there is a `'readable'` event, or
* by adding a `'data'` handler, or by calling the `.resume()` method.
* Until the data is consumed, the `'end'` event will not fire. Also, until
* the data is read it will consume memory that can eventually lead to a
* 'process out of memory' error.
*
* For backward compatibility, `res` will only emit `'error'` if there is an`'error'` listener registered.
*
* Node.js does not check whether Content-Length and the length of the
* body which has been transmitted are equal or not.
* @since v0.1.17
*/
class ClientRequest extends OutgoingMessage {
/**
* The `request.aborted` property will be `true` if the request has
* been aborted.
* @since v0.11.14
*/
aborted: boolean;
/**
* The request host.
* @since v14.5.0, v12.19.0
*/
host: string;
/**
* The request protocol.
* @since v14.5.0, v12.19.0
*/
protocol: string;
constructor(url: string | URL | ClientRequestArgs, cb?: (res: IncomingMessage) => void);
/**
* The request method.
* @since v0.1.97
*/
method: string;
/**
* The request path.
* @since v0.4.0
*/
path: string;
/**
* Marks the request as aborting. Calling this will cause remaining data
* in the response to be dropped and the socket to be destroyed.
* @since v0.3.8
* @deprecated Since v14.1.0,v13.14.0 - Use `destroy` instead.
*/
abort(): void;
onSocket(socket: Socket): void;
/**
* Once a socket is assigned to this request and is connected `socket.setTimeout()` will be called.
* @since v0.5.9
* @param timeout Milliseconds before a request times out.
* @param callback Optional function to be called when a timeout occurs. Same as binding to the `'timeout'` event.
*/
setTimeout(timeout: number, callback?: () => void): this;
/**
* Once a socket is assigned to this request and is connected `socket.setNoDelay()` will be called.
* @since v0.5.9
*/
setNoDelay(noDelay?: boolean): void;
/**
* Once a socket is assigned to this request and is connected `socket.setKeepAlive()` will be called.
* @since v0.5.9
*/
setSocketKeepAlive(enable?: boolean, initialDelay?: number): void;
/**
* Returns an array containing the unique names of the current outgoing raw
* headers. Header names are returned with their exact casing being set.
*
* ```js
* request.setHeader('Foo', 'bar');
* request.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
*
* const headerNames = request.getRawHeaderNames();
* // headerNames === ['Foo', 'Set-Cookie']
* ```
* @since v15.13.0
*/
getRawHeaderNames(): string[];
addListener(event: 'abort', listener: () => void): this;
addListener(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
addListener(event: 'continue', listener: () => void): this;
addListener(event: 'information', listener: (info: InformationEvent) => void): this;
addListener(event: 'response', listener: (response: IncomingMessage) => void): this;
addListener(event: 'socket', listener: (socket: Socket) => void): this;
addListener(event: 'timeout', listener: () => void): this;
addListener(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
addListener(event: 'close', listener: () => void): this;
addListener(event: 'drain', listener: () => void): this;
addListener(event: 'error', listener: (err: Error) => void): this;
addListener(event: 'finish', listener: () => void): this;
addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
addListener(event: string | symbol, listener: (...args: any[]) => void): this;
on(event: 'abort', listener: () => void): this;
on(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
on(event: 'continue', listener: () => void): this;
on(event: 'information', listener: (info: InformationEvent) => void): this;
on(event: 'response', listener: (response: IncomingMessage) => void): this;
on(event: 'socket', listener: (socket: Socket) => void): this;
on(event: 'timeout', listener: () => void): this;
on(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
on(event: 'close', listener: () => void): this;
on(event: 'drain', listener: () => void): this;
on(event: 'error', listener: (err: Error) => void): this;
on(event: 'finish', listener: () => void): this;
on(event: 'pipe', listener: (src: stream.Readable) => void): this;
on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
on(event: string | symbol, listener: (...args: any[]) => void): this;
once(event: 'abort', listener: () => void): this;
once(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
once(event: 'continue', listener: () => void): this;
once(event: 'information', listener: (info: InformationEvent) => void): this;
once(event: 'response', listener: (response: IncomingMessage) => void): this;
once(event: 'socket', listener: (socket: Socket) => void): this;
once(event: 'timeout', listener: () => void): this;
once(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
once(event: 'close', listener: () => void): this;
once(event: 'drain', listener: () => void): this;
once(event: 'error', listener: (err: Error) => void): this;
once(event: 'finish', listener: () => void): this;
once(event: 'pipe', listener: (src: stream.Readable) => void): this;
once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
once(event: string | symbol, listener: (...args: any[]) => void): this;
prependListener(event: 'abort', listener: () => void): this;
prependListener(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
prependListener(event: 'continue', listener: () => void): this;
prependListener(event: 'information', listener: (info: InformationEvent) => void): this;
prependListener(event: 'response', listener: (response: IncomingMessage) => void): this;
prependListener(event: 'socket', listener: (socket: Socket) => void): this;
prependListener(event: 'timeout', listener: () => void): this;
prependListener(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
prependListener(event: 'close', listener: () => void): this;
prependListener(event: 'drain', listener: () => void): this;
prependListener(event: 'error', listener: (err: Error) => void): this;
prependListener(event: 'finish', listener: () => void): this;
prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
prependOnceListener(event: 'abort', listener: () => void): this;
prependOnceListener(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
prependOnceListener(event: 'continue', listener: () => void): this;
prependOnceListener(event: 'information', listener: (info: InformationEvent) => void): this;
prependOnceListener(event: 'response', listener: (response: IncomingMessage) => void): this;
prependOnceListener(event: 'socket', listener: (socket: Socket) => void): this;
prependOnceListener(event: 'timeout', listener: () => void): this;
prependOnceListener(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
prependOnceListener(event: 'close', listener: () => void): this;
prependOnceListener(event: 'drain', listener: () => void): this;
prependOnceListener(event: 'error', listener: (err: Error) => void): this;
prependOnceListener(event: 'finish', listener: () => void): this;
prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
}
/**
* An `IncomingMessage` object is created by {@link Server} or {@link ClientRequest} and passed as the first argument to the `'request'` and `'response'` event respectively. It may be used to
* access response
* status, headers and data.
*
* Different from its `socket` value which is a subclass of `stream.Duplex`, the`IncomingMessage` itself extends `stream.Readable` and is created separately to
* parse and emit the incoming HTTP headers and payload, as the underlying socket
* may be reused multiple times in case of keep-alive.
* @since v0.1.17
*/
class IncomingMessage extends stream.Readable {
constructor(socket: Socket);
/**
* The `message.aborted` property will be `true` if the request has
* been aborted.
* @since v10.1.0
*/
aborted: boolean;
/**
* In case of server request, the HTTP version sent by the client. In the case of
* client response, the HTTP version of the connected-to server.
* Probably either `'1.1'` or `'1.0'`.
*
* Also `message.httpVersionMajor` is the first integer and`message.httpVersionMinor` is the second.
* @since v0.1.1
*/
httpVersion: string;
httpVersionMajor: number;
httpVersionMinor: number;
/**
* The `message.complete` property will be `true` if a complete HTTP message has
* been received and successfully parsed.
*
* This property is particularly useful as a means of determining if a client or
* server fully transmitted a message before a connection was terminated:
*
* ```js
* const req = http.request({
* host: '127.0.0.1',
* port: 8080,
* method: 'POST'
* }, (res) => {
* res.resume();
* res.on('end', () => {
* if (!res.complete)
* console.error(
* 'The connection was terminated while the message was still being sent');
* });
* });
* ```
* @since v0.3.0
*/
complete: boolean;
/**
* Alias for `message.socket`.
* @since v0.1.90
* @deprecated Since v16.0.0 - Use `socket`.
*/
connection: Socket;
/**
* The `net.Socket` object associated with the connection.
*
* With HTTPS support, use `request.socket.getPeerCertificate()` to obtain the
* client's authentication details.
*
* This property is guaranteed to be an instance of the `net.Socket` class,
* a subclass of `stream.Duplex`, unless the user specified a socket
* type other than `net.Socket`.
* @since v0.3.0
*/
socket: Socket;
/**
* The request/response headers object.
*
* Key-value pairs of header names and values. Header names are lower-cased.
*
* ```js
* // Prints something like:
* //
* // { 'user-agent': 'curl/7.22.0',
* // host: '127.0.0.1:8000',
* // accept: '*' }
* console.log(request.headers);
* ```
*
* Duplicates in raw headers are handled in the following ways, depending on the
* header name:
*
* * Duplicates of `age`, `authorization`, `content-length`, `content-type`,`etag`, `expires`, `from`, `host`, `if-modified-since`, `if-unmodified-since`,`last-modified`, `location`,
* `max-forwards`, `proxy-authorization`, `referer`,`retry-after`, `server`, or `user-agent` are discarded.
* * `set-cookie` is always an array. Duplicates are added to the array.
* * For duplicate `cookie` headers, the values are joined together with '; '.
* * For all other headers, the values are joined together with ', '.
* @since v0.1.5
*/
headers: IncomingHttpHeaders;
/**
* The raw request/response headers list exactly as they were received.
*
* The keys and values are in the same list. It is _not_ a
* list of tuples. So, the even-numbered offsets are key values, and the
* odd-numbered offsets are the associated values.
*
* Header names are not lowercased, and duplicates are not merged.
*
* ```js
* // Prints something like:
* //
* // [ 'user-agent',
* // 'this is invalid because there can be only one',
* // 'User-Agent',
* // 'curl/7.22.0',
* // 'Host',
* // '127.0.0.1:8000',
* // 'ACCEPT',
* // '*' ]
* console.log(request.rawHeaders);
* ```
* @since v0.11.6
*/
rawHeaders: string[];
/**
* The request/response trailers object. Only populated at the `'end'` event.
* @since v0.3.0
*/
trailers: NodeJS.Dict<string>;
/**
* The raw request/response trailer keys and values exactly as they were
* received. Only populated at the `'end'` event.
* @since v0.11.6
*/
rawTrailers: string[];
/**
* Calls `message.socket.setTimeout(msecs, callback)`.
* @since v0.5.9
*/
setTimeout(msecs: number, callback?: () => void): this;
/**
* **Only valid for request obtained from {@link Server}.**
*
* The request method as a string. Read only. Examples: `'GET'`, `'DELETE'`.
* @since v0.1.1
*/
method?: string | undefined;
/**
* **Only valid for request obtained from {@link Server}.**
*
* Request URL string. This contains only the URL that is present in the actual
* HTTP request. Take the following request:
*
* ```http
* GET /status?name=ryan HTTP/1.1
* Accept: text/plain
* ```
*
* To parse the URL into its parts:
*
* ```js
* new URL(request.url, `http://${request.headers.host}`);
* ```
*
* When `request.url` is `'/status?name=ryan'` and`request.headers.host` is `'localhost:3000'`:
*
* ```console
* $ node
* > new URL(request.url, `http://${request.headers.host}`)
* URL {
* href: 'http://localhost:3000/status?name=ryan',
* origin: 'http://localhost:3000',
* protocol: 'http:',
* username: '',
* password: '',
* host: 'localhost:3000',
* hostname: 'localhost',
* port: '3000',
* pathname: '/status',
* search: '?name=ryan',
* searchParams: URLSearchParams { 'name' => 'ryan' },
* hash: ''
* }
* ```
* @since v0.1.90
*/
url?: string | undefined;
/**
* **Only valid for response obtained from {@link ClientRequest}.**
*
* The 3-digit HTTP response status code. E.G. `404`.
* @since v0.1.1
*/
statusCode?: number | undefined;
/**
* **Only valid for response obtained from {@link ClientRequest}.**
*
* The HTTP response status message (reason phrase). E.G. `OK` or `Internal Server Error`.
* @since v0.11.10
*/
statusMessage?: string | undefined;
/**
* Calls `destroy()` on the socket that received the `IncomingMessage`. If `error`is provided, an `'error'` event is emitted on the socket and `error` is passed
* as an argument to any listeners on the event.
* @since v0.3.0
*/
destroy(error?: Error): void;
}
interface AgentOptions {
/**
* Keep sockets around in a pool to be used by other requests in the future. Default = false
*/
keepAlive?: boolean | undefined;
/**
* When using HTTP KeepAlive, how often to send TCP KeepAlive packets over sockets being kept alive. Default = 1000.
* Only relevant if keepAlive is set to true.
*/
keepAliveMsecs?: number | undefined;
/**
* Maximum number of sockets to allow per host. Default for Node 0.10 is 5, default for Node 0.12 is Infinity
*/
maxSockets?: number | undefined;
/**
* Maximum number of sockets allowed for all hosts in total. Each request will use a new socket until the maximum is reached. Default: Infinity.
*/
maxTotalSockets?: number | undefined;
/**
* Maximum number of sockets to leave open in a free state. Only relevant if keepAlive is set to true. Default = 256.
*/
maxFreeSockets?: number | undefined;
/**
* Socket timeout in milliseconds. This will set the timeout after the socket is connected.
*/
timeout?: number | undefined;
/**
* Scheduling strategy to apply when picking the next free socket to use.
* @default `lifo`
*/
scheduling?: 'fifo' | 'lifo' | undefined;
}
/**
* An `Agent` is responsible for managing connection persistence
* and reuse for HTTP clients. It maintains a queue of pending requests
* for a given host and port, reusing a single socket connection for each
* until the queue is empty, at which time the socket is either destroyed
* or put into a pool where it is kept to be used again for requests to the
* same host and port. Whether it is destroyed or pooled depends on the`keepAlive` `option`.
*
* Pooled connections have TCP Keep-Alive enabled for them, but servers may
* still close idle connections, in which case they will be removed from the
* pool and a new connection will be made when a new HTTP request is made for
* that host and port. Servers may also refuse to allow multiple requests
* over the same connection, in which case the connection will have to be
* remade for every request and cannot be pooled. The `Agent` will still make
* the requests to that server, but each one will occur over a new connection.
*