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doc: move onread option from socket.connect() to new net.socket()
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Fixes: #53792
PR-URL: #54194
Reviewed-By: Paolo Insogna <paolo@cowtech.it>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Tim Perry <pimterry@gmail.com>
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sendoru authored and targos committed Aug 14, 2024
1 parent 8daeccf commit 5175903
Showing 1 changed file with 33 additions and 33 deletions.
66 changes: 33 additions & 33 deletions doc/api/net.md
Original file line number Diff line number Diff line change
Expand Up @@ -667,6 +667,19 @@ changes:
`false`.
* `fd` {number} If specified, wrap around an existing socket with
the given file descriptor, otherwise a new socket will be created.
* `onread` {Object} If specified, incoming data is stored in a single `buffer`
and passed to the supplied `callback` when data arrives on the socket.
This will cause the streaming functionality to not provide any data.
The socket will emit events like `'error'`, `'end'`, and `'close'`
as usual. Methods like `pause()` and `resume()` will also behave as
expected.
* `buffer` {Buffer|Uint8Array|Function} Either a reusable chunk of memory to
use for storing incoming data or a function that returns such.
* `callback` {Function} 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. This function will be executed in the
global context.
* `readable` {boolean} Allow reads on the socket when an `fd` is passed,
otherwise ignored. **Default:** `false`.
* `signal` {AbortSignal} An Abort signal that may be used to destroy the
Expand Down Expand Up @@ -1038,39 +1051,6 @@ For [IPC][] connections, available `options` are:
See [Identifying paths for IPC connections][]. If provided, the TCP-specific
options above are ignored.

For both types, available `options` include:

* `onread` {Object} If specified, incoming data is stored in a single `buffer`
and passed to the supplied `callback` when data arrives on the socket.
This will cause the streaming functionality to not provide any data.
The socket will emit events like `'error'`, `'end'`, and `'close'`
as usual. Methods like `pause()` and `resume()` will also behave as
expected.
* `buffer` {Buffer|Uint8Array|Function} Either a reusable chunk of memory to
use for storing incoming data or a function that returns such.
* `callback` {Function} 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. This function will be executed in the
global context.

Following is an example of a client using the `onread` option:

```js
const net = require('node:net');
net.connect({
port: 80,
onread: {
// Reuses a 4KiB Buffer for every read from the socket.
buffer: Buffer.alloc(4 * 1024),
callback: function(nread, buf) {
// Received data is available in `buf` from 0 to `nread`.
console.log(buf.toString('utf8', 0, nread));
},
},
});
```

#### `socket.connect(path[, connectListener])`

* `path` {string} Path the client should connect to. See
Expand Down Expand Up @@ -1573,6 +1553,26 @@ To connect on the socket `/tmp/echo.sock`:
const client = net.createConnection({ path: '/tmp/echo.sock' });
```

Following is an example of a client using the `port` and `onread`
option. In this case, the `onread` option will be only used to call
`new net.Socket([options])` and the `port` option will be used to
call `socket.connect(options[, connectListener])`.

```js
const net = require('node:net');
net.createConnection({
port: 80,
onread: {
// Reuses a 4KiB Buffer for every read from the socket.
buffer: Buffer.alloc(4 * 1024),
callback: function(nread, buf) {
// Received data is available in `buf` from 0 to `nread`.
console.log(buf.toString('utf8', 0, nread));
},
},
});
```

### `net.createConnection(path[, connectListener])`

<!-- YAML
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