18b2fca397
Related: - https://github.com/socketio/socket.io-client-java/issues/606 - https://github.com/socketio/socket.io-client-java/issues/435
60 lines
1.7 KiB
Markdown
60 lines
1.7 KiB
Markdown
# Android
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<!-- MACRO{toc} -->
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## How to keep a Socket.IO client running in the background?
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Long story short, you probably shouldn't. The Socket.IO client is not meant to be used in a [background service](https://developer.android.com/guide/components/services?hl=en), as it will keep an open TCP connection to the server and quickly drain the battery of your users.
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It is totally usable in the foreground though.
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See also: https://developer.android.com/training/connectivity
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## How to reach an HTTP server?
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Starting with Android 9 (API level 28) you need to explicitly allow cleartext traffic to be able to reach an HTTP server (e.g. a local server at `http://192.168.0.10`):
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- either for all domains:
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`app/src/main/AndroidManifest.xml`
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```xml
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<?xml version="1.0" encoding="utf-8"?>
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<manifest>
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<uses-permission android:name="android.permission.INTERNET" />
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<application android:usesCleartextTraffic="true">
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...
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</application>
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</manifest>
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```
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- or for a restricted list of domains:
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`app/src/main/AndroidManifest.xml`
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```xml
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<?xml version="1.0" encoding="utf-8"?>
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<manifest>
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<uses-permission android:name="android.permission.INTERNET" />
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<application android:networkSecurityConfig="@xml/network_security_config">
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...
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</application>
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</manifest>
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```
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`app/src/main/res/xml/network_security_config.xml`
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```xml
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<?xml version="1.0" encoding="utf-8"?>
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<network-security-config>
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<domain-config cleartextTrafficPermitted="true">
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<domain includeSubdomains="true">localhost</domain>
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<domain includeSubdomains="true">192.168.0.10</domain>
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</domain-config>
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</network-security-config>
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```
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Reference: https://developer.android.com/training/articles/security-config
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