@rpldy/chunked-sender/README.md

adds chunked upload capabilities on top of the regular XHR uploads

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# Chunked Sender

Adds chunked upload capabilities on top of the regular XHR [@rpldy/sender](https://react-uploady.org/docs/packages/rpldy-sender/)
Exposes an UploaderEnhancer that replaces the default send method the [uploader](https://react-uploady.org/docs/packages/rpldy-uploader/) uses.

For usage with your React app, see [@rpldy/chunked-uploady](https://react-uploady.org/docs/packages/rpldy-chunked-uploady/).

Chunked uploading doesn't support grouped uploads (in single XHR request) or URL uploading. 
These will be handed over to the default [@rpldy/sender](https://react-uploady.org/docs/packages/rpldy-sender/)

**The best place to get started is at our: [React-Uploady Documentation Website](https://react-uploady.org)**

## Installation

```shell
#Yarn:
  $ yarn add @rpldy/chunked-sender

#NPM:
  $ npm i @rpldy/chunked-sender
``` 

## Options

| Name (* = mandatory) | Type    | Default | Description                                                             |
|----------------------|---------|---------|-------------------------------------------------------------------------|
| chunked              | boolean | true    | chunk uploads. setting to false will return to default sending behavior |
| chunkSize            | number  | 5242880 | the chunk size. relevant when uploaded file is larger than the value    |
| retries              | number  | 0       | how many times to retry sending a failed chunk                          |
| parallel             | number  | 0       | how many (chunk) requests to send simultaneously                        |

## Events

Chunked Sender makes it possible to handle chunk life-time events.
See [uploader events](https://react-uploady.org/docs/api/events/) section on more info regarding how to register for events.

### CHUNK_EVENTS.CHUNK_START

Triggered when a chunk is about to be sent to the server

> This event is _[cancellable](https://react-uploady.org/docs/api/events/#cancellable-events)_

The event handler may return an object with the following shape: 

```javascript
type StartEventResponse = {
	url: string,
    sendOptions: SendOptions
}
``` 

> * [SendOptions](https://react-uploady.org/docs/api/types/#sendoptions)

### CHUNK_EVENTS.CHUNK_FINISH

Triggered when a chunk has finished uploading

### Item Error

In case of chunk upload error in conjunction of using the [ITEM_ERROR](https://react-uploady.org/docs/api/events/#itemError) or the
[useItemErrorListener](https://react-uploady.org/docs/api/hooks/useItemErrorListener/) hook, it is possible to access the error information returned from the server like so:

```jsx

import { useItemErrorListener } from "@rpldy/uploady";

const MyComponent = () => {
    useItemErrorListener((item) => {
        console.log(`item ${item.id} failed -  status code:`, item.uploadResponse.chunkUploadResponse.status); //the status code returned by the server on the failed chunk
        console.log(`item ${item.id} failed -  msg:`, item.uploadResponse.chunkUploadResponse.response); //the response data (if) sent by the server on the failed chunk
    });

    //...
};
```