Spaces:
Runtime error
Runtime error
File size: 1,524 Bytes
311cc15 |
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 |
# Interface: DispatchInterceptor
Extends: `Function`
A function that can be applied to the `Dispatcher.Dispatch` function before it is invoked with a dispatch request.
This allows one to write logic to intercept both the outgoing request, and the incoming response.
### Parameter: `Dispatcher.Dispatch`
The base dispatch function you are decorating.
### ReturnType: `Dispatcher.Dispatch`
A dispatch function that has been altered to provide additional logic
### Basic Example
Here is an example of an interceptor being used to provide a JWT bearer token
```js
'use strict'
const insertHeaderInterceptor = dispatch => {
return function InterceptedDispatch(opts, handler){
opts.headers.push('Authorization', 'Bearer [Some token]')
return dispatch(opts, handler)
}
}
const client = new Client('https://localhost:3000', {
interceptors: { Client: [insertHeaderInterceptor] }
})
```
### Basic Example 2
Here is a contrived example of an interceptor stripping the headers from a response.
```js
'use strict'
const clearHeadersInterceptor = dispatch => {
const { DecoratorHandler } = require('undici')
class ResultInterceptor extends DecoratorHandler {
onHeaders (statusCode, headers, resume) {
return super.onHeaders(statusCode, [], resume)
}
}
return function InterceptedDispatch(opts, handler){
return dispatch(opts, new ResultInterceptor(handler))
}
}
const client = new Client('https://localhost:3000', {
interceptors: { Client: [clearHeadersInterceptor] }
})
```
|