86 lines
3 KiB
Markdown
86 lines
3 KiB
Markdown
# net
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> Issue HTTP/HTTPS requests using Chromium's native networking library
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Process: [Main](../glossary.md#main-process)
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The `net` module is a client-side API for issuing HTTP(S) requests. It is
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similar to the [HTTP](https://nodejs.org/api/http.html) and
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[HTTPS](https://nodejs.org/api/https.html) modules of Node.js but uses
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Chromium's native networking library instead of the Node.js implementation,
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offering better support for web proxies. It also supports checking network status.
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The following is a non-exhaustive list of why you may consider using the `net`
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module instead of the native Node.js modules:
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* Automatic management of system proxy configuration, support of the wpad
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protocol and proxy pac configuration files.
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* Automatic tunneling of HTTPS requests.
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* Support for authenticating proxies using basic, digest, NTLM, Kerberos or
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negotiate authentication schemes.
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* Support for traffic monitoring proxies: Fiddler-like proxies used for access
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control and monitoring.
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The API components (including classes, methods, properties and event names) are similar to those used in
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Node.js.
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Example usage:
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```javascript
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const { app } = require('electron')
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app.whenReady().then(() => {
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const { net } = require('electron')
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const request = net.request('https://github.com')
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request.on('response', (response) => {
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console.log(`STATUS: ${response.statusCode}`)
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console.log(`HEADERS: ${JSON.stringify(response.headers)}`)
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response.on('data', (chunk) => {
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console.log(`BODY: ${chunk}`)
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})
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response.on('end', () => {
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console.log('No more data in response.')
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})
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})
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request.end()
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})
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```
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The `net` API can be used only after the application emits the `ready` event.
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Trying to use the module before the `ready` event will throw an error.
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## Methods
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The `net` module has the following methods:
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### `net.request(options)`
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* `options` (ClientRequestConstructorOptions | String) - The `ClientRequest` constructor options.
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Returns [`ClientRequest`](./client-request.md)
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Creates a [`ClientRequest`](./client-request.md) instance using the provided
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`options` which are directly forwarded to the `ClientRequest` constructor.
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The `net.request` method would be used to issue both secure and insecure HTTP
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requests according to the specified protocol scheme in the `options` object.
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### `net.isOnline()`
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Returns `Boolean` - Whether there is currently internet connection.
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A return value of `false` is a pretty strong indicator that the user
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won't be able to connect to remote sites. However, a return value of
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`true` is inconclusive; even if some link is up, it is uncertain
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whether a particular connection attempt to a particular remote site
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will be successful.
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## Properties
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### `net.online` _Readonly_
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A `Boolean` property. Whether there is currently internet connection.
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A return value of `false` is a pretty strong indicator that the user
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won't be able to connect to remote sites. However, a return value of
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`true` is inconclusive; even if some link is up, it is uncertain
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whether a particular connection attempt to a particular remote site
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will be successful.
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