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08c375f828
Summary: In preparation for Blob support (wherein binary XHR and WebSocket responses can be retained as native data blobs on the native side and JS receives a web-like opaque Blob object), this change makes RCTNetworking aware of the responseType that JS requests. A `xhr.responseType` of `''` or `'text'` translates to a native response type of `'text'`. A `xhr.responseType` of `arraybuffer` translates to a native response type of `base64`, as we currently lack an API to transmit TypedArrays directly to JS. This is analogous to how the WebSocket module already works, and it's a lot more versatile and much less brittle than converting a JS *string* back to a TypedArray, which is what's currently going on. Now that we don't always send text down to JS, JS consumers might still want to get progress updates about a binary download. This is what the `'progress'` event is designed for, so this change also implements that. This change also follows the XHR spec with regards to `xhr.response` and `xhr.responseText`: - if the response type is `'text'`, `xhr.responseText` can be peeked at by the JS consumer. It will be updated periodically as the download progresses, so long as there's either an `onreadystatechange` or `onprogress` handler on the XHR. - if the response type is not `'text'`, `xhr.responseText` can't be accessed and `xhr.response` remains `null` until the response is fully received. `'progress'` events containing response details (total bytes, downloaded so far) are dispatched if there's an `onprogress` handler. Once Blobs are landed, `xhr.responseType` of `'blob'` will correspond to the same native response type, which will cause RCTNetworking to only send a blob ID down to JS, which can then create a `Blob` object from that for consumers. Closes https://github.com/facebook/react-native/pull/8324 Reviewed By: javache Differential Revision: D3508822 Pulled By: davidaurelio fbshipit-source-id: 441b2d4d40265b6036559c3ccb9fa962999fa5df
60 lines
1.5 KiB
JavaScript
60 lines
1.5 KiB
JavaScript
/**
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* Copyright (c) 2015-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*
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* @providesModule RCTNetworking
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* @flow
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*/
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'use strict';
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const FormData = require('FormData');
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const NativeEventEmitter = require('NativeEventEmitter');
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const RCTNetworkingNative = require('NativeModules').Networking;
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class RCTNetworking extends NativeEventEmitter {
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constructor() {
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super(RCTNetworkingNative);
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}
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sendRequest(
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method: string,
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trackingName: string,
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url: string,
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headers: Object,
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data: string | FormData | {uri: string},
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responseType: 'text' | 'base64',
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incrementalUpdates: boolean,
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timeout: number,
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callback: (requestId: number) => any
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) {
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const body =
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typeof data === 'string' ? {string: data} :
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data instanceof FormData ? {formData: data.getParts()} :
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data;
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RCTNetworkingNative.sendRequest({
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method,
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url,
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data: {...body, trackingName},
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headers,
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responseType,
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incrementalUpdates,
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timeout
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}, callback);
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}
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abortRequest(requestId: number) {
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RCTNetworkingNative.abortRequest(requestId);
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}
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clearCookies(callback: (result: boolean) => any) {
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console.warn('RCTNetworking.clearCookies is not supported on iOS');
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}
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}
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module.exports = new RCTNetworking();
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