bug: Android proxy not setting all cookies, only sets last set-cookie header

[tlancina]

Bug Report

Platform(s)

Android

Current Behavior

If there are multiple Set-Cookie headers on a proxied response, only the last one is set.

Expected Behavior

It should set all of the cookies.

Code Reproduction

Run a server that responds to http://localhost:8000 with two Set-Cookie headers, ie:

printf "HTTP/1.1 200 OK\r\nSet-Cookie: a=123\r\nSet-Cookie:b=456\r\n\r\nHello World\r\n" | nc -l 8000

Then run:
https://github.com/tlancina/cap-cookie-repro

Other Technical Details

capacitor/android/capacitor/src/main/java/com/getcapacitor/WebViewLocalServer.java

Line 363 in ad83827

String cookie = conn.getHeaderField("Set-Cookie");

From https://developer.android.com/reference/java/net/URLConnection#getHeaderField(java.lang.String): "If called on a connection that sets the same header multiple times with possibly different values, only the last value is returned."

[tlancina]

Closing as dup of #5394

[ionitron-bot]

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