proxy_selector

Description:

proxy selector

proxy_selector #
This plugin lets you retrieve proxy settings for specific URL.
Currently iOS and Android supported.
On Android it uses ProxySelector from java.net.
On iOS it uses CFNetworkCopySystemProxySettings/CFNetworkCopyProxiesForURL and for PAC (Script/Url) CFNetworkExecuteProxyAutoConfigurationURL/CFNetworkExecuteProxyAutoConfigurationScript to resolve PAC script.
FTP (iOS only) and SOCKS not tested.
Credentials (iOS) not supported.
How to test #
You can use your own proxy server or any other proxy tools for testing purpose. I used Proxyman.

Install Proxyman
Set up your physical device with Proxyman. Goal is to be able track all traffic in Proxyman
Open browser and enter some random address
Proxyman displays all requests
Run example project on your device
Execute entered URL
No proxy displayed in Proxyman
Enable Proxy
Execute entered URL
Proxy settings displayed

To test pac. #
You need nginx on your device and a pac file.
For easy set up i used this PAC which points to Proxyman proxy
function FindProxyForURL (url, host) {

// return 'PROXY 1111.1111.1111.1111:9999; DIRECT';
return 'PROXY [Enter here ip address of Proxyman and port]; DIRECT';
}
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and nginx.conf with root as path to dir ith contained pac file.
events {}
http {
include mime.types;
default_type application/x-ns-proxy-autoconfig;

server {
location / {
# path to root where testfile.pac located
root /../../../;
}
}
}
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After this reload or start nginx. Your PAC should now be accessible under your local ip address (localhost). Care that the file returned with the mime type: application/x-ns-proxy-autoconfig
Enter your ip address as URL in your proxy setting of the device. After this you can test PAC with the example.
Example:
1111.1111.1111.1111/testfile.pac
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Source #
Following sources were used to implement this plugin.
https://yamsergey.medium.com/flutter-and-proxy-1e2b6acd24f5
iOS:
https://developer.apple.com/forums/thread/65416
https://developer.apple.com/documentation/cfnetwork/1426639-cfnetworkcopyproxiesforurl
https://developer.apple.com/forums/thread/669346
Android:
https://developer.android.com/reference/java/net/ProxySelector