-
Notifications
You must be signed in to change notification settings - Fork 310
Expand file tree
/
Copy pathnet.d.ts
More file actions
999 lines (999 loc) 路 45.2 KB
/
Copy pathnet.d.ts
File metadata and controls
999 lines (999 loc) 路 45.2 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
/**
* > Stability: 2 - Stable
*
* The `node: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('node:net');
* ```
* @see [source](https://github.com/nodejs/node/blob/v22.x/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.LookupOptions,
callback: (err: NodeJS.ErrnoException | null, address: string | dns.LookupAddress[], 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, v16.17.0
*/
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 is only present if the family autoselection algorithm is enabled in `socket.connect(options)`
* and it is an array of the addresses that have been attempted.
*
* Each address is a string in the form of `$IP:$PORT`.
* If the connection was successful, then the last address is the one that the socket is currently connected to.
* @since v19.4.0
*/
readonly autoSelectFamilyAttemptedAddresses: string[];
/**
* 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 v11.2.0, 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, v16.18.0
*/
readonly localFamily?: string;
/**
* This property represents the state of the connection as a string.
*
* * If the stream is connecting `socket.readyState` is `opening`.
* * If the stream is readable and writable, it is `open`.
* * If the stream is readable and not writable, it is `readOnly`.
* * If the stream is not readable and writable, it is `writeOnly`.
* @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'`. Value may be `undefined` if
* the socket is destroyed (for example, if the client disconnected).
* @since v0.11.14
*/
readonly remoteFamily?: string | undefined;
/**
* The numeric representation of the remote port. For example, `80` or `21`. Value may be `undefined` if
* the socket is destroyed (for example, if the client disconnected).
* @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. connectionAttempt
* 4. connectionAttemptFailed
* 5. connectionAttemptTimeout
* 6. data
* 7. drain
* 8. end
* 9. error
* 10. lookup
* 11. ready
* 12. 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: "connectionAttempt", listener: (ip: string, port: number, family: number) => void): this;
addListener(
event: "connectionAttemptFailed",
listener: (ip: string, port: number, family: number) => void,
): this;
addListener(
event: "connectionAttemptTimeout",
listener: (ip: string, port: number, family: number) => 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: "connectionAttempt", ip: string, port: number, family: number): boolean;
emit(event: "connectionAttemptFailed", ip: string, port: number, family: number): boolean;
emit(event: "connectionAttemptTimeout", ip: string, port: number, family: number): 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: "connectionAttempt", listener: (ip: string, port: number, family: number) => void): this;
on(event: "connectionAttemptFailed", listener: (ip: string, port: number, family: number) => void): this;
on(event: "connectionAttemptTimeout", listener: (ip: string, port: number, family: number) => 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: "connectionAttempt", listener: (ip: string, port: number, family: number) => void): this;
once(event: "connectionAttemptFailed", listener: (ip: string, port: number, family: number) => void): this;
once(event: "connectionAttemptTimeout", listener: (ip: string, port: number, family: number) => 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: "connectionAttempt", listener: (ip: string, port: number, family: number) => void): this;
prependListener(
event: "connectionAttemptFailed",
listener: (ip: string, port: number, family: number) => void,
): this;
prependListener(
event: "connectionAttemptTimeout",
listener: (ip: string, port: number, family: number) => 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: "connectionAttempt",
listener: (ip: string, port: number, family: number) => void,
): this;
prependOnceListener(
event: "connectionAttemptFailed",
listener: (ip: string, port: number, family: number) => void,
): this;
prependOnceListener(
event: "connectionAttemptTimeout",
listener: (ip: string, port: number, family: number) => 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.error('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
*/
readonly 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 v20.5.0
*/
[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;
/**
* The list of rules added to the blocklist.
* @since v15.0.0, v14.18.0
*/
rules: readonly string[];
}
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('node: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`:
*
* ```bash
* 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:
*
* ```bash
* 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;
/**
* Gets the current default value of the `autoSelectFamily` option of `socket.connect(options)`.
* The initial default value is `true`, unless the command line option`--no-network-family-autoselection` is provided.
* @since v19.4.0
*/
function getDefaultAutoSelectFamily(): boolean;
/**
* Sets the default value of the `autoSelectFamily` option of `socket.connect(options)`.
* @since v19.4.0
*/
function setDefaultAutoSelectFamily(value: boolean): void;
/**
* Gets the current default value of the `autoSelectFamilyAttemptTimeout` option of `socket.connect(options)`.
* The initial default value is `250` or the value specified via the command line option `--network-family-autoselection-attempt-timeout`.
* @returns The current default value of the `autoSelectFamilyAttemptTimeout` option.
* @since v19.8.0, v18.8.0
*/
function getDefaultAutoSelectFamilyAttemptTimeout(): number;
/**
* Sets the default value of the `autoSelectFamilyAttemptTimeout` option of `socket.connect(options)`.
* @param value The new default value, which must be a positive number. If the number is less than `10`, the value `10` is used instead. The initial default value is `250` or the value specified via the command line
* option `--network-family-autoselection-attempt-timeout`.
* @since v19.8.0, v18.8.0
*/
function setDefaultAutoSelectFamilyAttemptTimeout(value: number): void;
/**
* 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);
/**
* Either \`'ipv4'\` or \`'ipv6'\`.
* @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";
}