545563e776
- Complete NestJS TypeScript implementation with WebSocket support - Direct messaging (DM) and group chat functionality - End-to-end encryption with AES encryption and key pairs - Media file support (images, videos, audio, documents) up to 100MB - Push notifications with Firebase Cloud Messaging integration - Mention alerts and real-time typing indicators - User authentication with JWT and Passport - SQLite database with TypeORM entities and relationships - Comprehensive API documentation with Swagger/OpenAPI - File upload handling with secure access control - Online/offline status tracking and presence management - Message editing, deletion, and reply functionality - Notification management with automatic cleanup - Health check endpoint for monitoring - CORS configuration for cross-origin requests - Environment-based configuration management - Structured for Flutter SDK integration Features implemented: ✅ Real-time messaging with Socket.IO ✅ User registration and authentication ✅ Direct messages and group chats ✅ Media file uploads and management ✅ End-to-end encryption ✅ Push notifications ✅ Mention alerts ✅ Typing indicators ✅ Message read receipts ✅ Online status tracking ✅ File access control ✅ Comprehensive API documentation Ready for Flutter SDK development and production deployment.
110 lines
3.1 KiB
Markdown
110 lines
3.1 KiB
Markdown
# Encode URL
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Encode a URL to a percent-encoded form, excluding already-encoded sequences.
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## Installation
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```sh
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npm install encodeurl
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```
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## API
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```js
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var encodeUrl = require('encodeurl')
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```
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### encodeUrl(url)
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Encode a URL to a percent-encoded form, excluding already-encoded sequences.
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This function accepts a URL and encodes all the non-URL code points (as UTF-8 byte sequences). It will not encode the "%" character unless it is not part of a valid sequence (`%20` will be left as-is, but `%foo` will be encoded as `%25foo`).
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This encode is meant to be "safe" and does not throw errors. It will try as hard as it can to properly encode the given URL, including replacing any raw, unpaired surrogate pairs with the Unicode replacement character prior to encoding.
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## Examples
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### Encode a URL containing user-controlled data
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```js
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var encodeUrl = require('encodeurl')
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var escapeHtml = require('escape-html')
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http.createServer(function onRequest (req, res) {
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// get encoded form of inbound url
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var url = encodeUrl(req.url)
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// create html message
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var body = '<p>Location ' + escapeHtml(url) + ' not found</p>'
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// send a 404
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res.statusCode = 404
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res.setHeader('Content-Type', 'text/html; charset=UTF-8')
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res.setHeader('Content-Length', String(Buffer.byteLength(body, 'utf-8')))
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res.end(body, 'utf-8')
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})
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```
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### Encode a URL for use in a header field
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```js
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var encodeUrl = require('encodeurl')
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var escapeHtml = require('escape-html')
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var url = require('url')
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http.createServer(function onRequest (req, res) {
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// parse inbound url
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var href = url.parse(req)
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// set new host for redirect
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href.host = 'localhost'
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href.protocol = 'https:'
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href.slashes = true
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// create location header
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var location = encodeUrl(url.format(href))
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// create html message
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var body = '<p>Redirecting to new site: ' + escapeHtml(location) + '</p>'
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// send a 301
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res.statusCode = 301
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res.setHeader('Content-Type', 'text/html; charset=UTF-8')
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res.setHeader('Content-Length', String(Buffer.byteLength(body, 'utf-8')))
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res.setHeader('Location', location)
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res.end(body, 'utf-8')
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})
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```
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## Similarities
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This function is _similar_ to the intrinsic function `encodeURI`. However, it will not encode:
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* The `\`, `^`, or `|` characters
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* The `%` character when it's part of a valid sequence
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* `[` and `]` (for IPv6 hostnames)
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* Replaces raw, unpaired surrogate pairs with the Unicode replacement character
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As a result, the encoding aligns closely with the behavior in the [WHATWG URL specification][whatwg-url]. However, this package only encodes strings and does not do any URL parsing or formatting.
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It is expected that any output from `new URL(url)` will not change when used with this package, as the output has already been encoded. Additionally, if we were to encode before `new URL(url)`, we do not expect the before and after encoded formats to be parsed any differently.
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## Testing
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```sh
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$ npm test
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$ npm run lint
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```
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## References
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- [RFC 3986: Uniform Resource Identifier (URI): Generic Syntax][rfc-3986]
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- [WHATWG URL Living Standard][whatwg-url]
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[rfc-3986]: https://tools.ietf.org/html/rfc3986
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[whatwg-url]: https://url.spec.whatwg.org/
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## License
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[MIT](LICENSE)
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