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Set host of development server for setupDevtools 

Summary:
Related to #15126, and this would be useful for use React DevTools on real device without modify `setupDevtools.js`.

In Android emulator, the host of `SourceCode.scriptURL` is same with `PlatformConstants.ServerHost` so we can just replace it.

* Tested on iOS device with [react-devtools](https://github.com/facebook/react-devtools/tree/master/packages/react-devtools) package.
* Tested on Android emulator, the `getDevServer` module got the correctly hostname so that don't need `adb reverse`.

[ENHANCEMENT] [setupDevtools] Set host of development server for setupDevtools
Closes https://github.com/facebook/react-native/pull/15547

Differential Revision: D6544980

Pulled By: javache

fbshipit-source-id: a286874bcef0501c5d2e0be2251d58c236a5534a
This commit is contained in:
Jhen-Jie Hong 2017-12-29 07:44:42 -08:00 committed by Facebook Github Bot
parent 52f350a9cb
commit fa574c6092
1 changed files with 6 additions and 5 deletions
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11
Libraries/Core/Devtools/setupDevtools.js
View File

@ -28,11 +28,11 @@ let register = function () {
if (__DEV__) {
const AppState = require('AppState');
const WebSocket = require('WebSocket');
const {PlatformConstants} = require('NativeModules');
/* $FlowFixMe(>=0.54.0 site=react_native_oss) This comment suppresses an
* error found when Flow v0.54 was deployed. To see the error delete this
* comment and run Flow. */
const reactDevTools = require('react-devtools-core');
const getDevServer = require('getDevServer');
// Initialize dev tools only if the native module for WebSocket is available
if (WebSocket.isAvailable) {
@ -42,10 +42,11 @@ if (__DEV__) {
// or the code will throw for bundles that don't have it.
const isAppActive = () => AppState.currentState !== 'background';
// Special case: Genymotion is running on a different host.
const host = PlatformConstants && PlatformConstants.ServerHost ?
PlatformConstants.ServerHost.split(':')[0] :
'localhost';
// Get hostname from development server (packager)
const devServer = getDevServer();
const host = devServer.bundleLoadedFromServer
? devServer.url.replace(/https?:\/\//, '').split(':')[0]
: 'localhost';
reactDevTools.connectToDevTools({
isAppActive,