48 lines
3.5 KiB
Markdown
48 lines
3.5 KiB
Markdown
# Errors
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Undici exposes a variety of error objects that you can use to enhance your error handling.
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You can find all the error objects inside the `errors` key.
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```js
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import { errors } from 'undici'
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```
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| Error | Error Codes | Description |
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| ------------------------------------ | ------------------------------------- | ------------------------------------------------------------------------- |
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| `UndiciError` | `UND_ERR` | all errors below are extended from `UndiciError`. |
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| `ConnectTimeoutError` | `UND_ERR_CONNECT_TIMEOUT` | socket is destroyed due to connect timeout. |
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| `HeadersTimeoutError` | `UND_ERR_HEADERS_TIMEOUT` | socket is destroyed due to headers timeout. |
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| `HeadersOverflowError` | `UND_ERR_HEADERS_OVERFLOW` | socket is destroyed due to headers' max size being exceeded. |
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| `BodyTimeoutError` | `UND_ERR_BODY_TIMEOUT` | socket is destroyed due to body timeout. |
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| `ResponseStatusCodeError` | `UND_ERR_RESPONSE_STATUS_CODE` | an error is thrown when `throwOnError` is `true` for status codes >= 400. |
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| `InvalidArgumentError` | `UND_ERR_INVALID_ARG` | passed an invalid argument. |
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| `InvalidReturnValueError` | `UND_ERR_INVALID_RETURN_VALUE` | returned an invalid value. |
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| `RequestAbortedError` | `UND_ERR_ABORTED` | the request has been aborted by the user |
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| `ClientDestroyedError` | `UND_ERR_DESTROYED` | trying to use a destroyed client. |
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| `ClientClosedError` | `UND_ERR_CLOSED` | trying to use a closed client. |
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| `SocketError` | `UND_ERR_SOCKET` | there is an error with the socket. |
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| `NotSupportedError` | `UND_ERR_NOT_SUPPORTED` | encountered unsupported functionality. |
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| `RequestContentLengthMismatchError` | `UND_ERR_REQ_CONTENT_LENGTH_MISMATCH` | request body does not match content-length header |
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| `ResponseContentLengthMismatchError` | `UND_ERR_RES_CONTENT_LENGTH_MISMATCH` | response body does not match content-length header |
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| `InformationalError` | `UND_ERR_INFO` | expected error with reason |
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| `ResponseExceededMaxSizeError` | `UND_ERR_RES_EXCEEDED_MAX_SIZE` | response body exceed the max size allowed |
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### `SocketError`
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The `SocketError` has a `.socket` property which holds socket metadata:
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```ts
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interface SocketInfo {
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localAddress?: string
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localPort?: number
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remoteAddress?: string
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remotePort?: number
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remoteFamily?: string
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timeout?: number
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bytesWritten?: number
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bytesRead?: number
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}
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```
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Be aware that in some cases the `.socket` property can be `null`.
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