Proxy Android
Millaray Ball
No, they do not apply globally and without root there is no way to force a proxy to be used by all applications. The reason the message you found is worded that way is that it is up to the app creator to respect the proxy settings and use them or do the wrong thing and ignore them.
The reason that this is not the default behavior is because it could present some security risks. If all traffic could be redirected, users could have all of their traffic be going through some bad proxy server that snoops on them so they default to only allowing apps to use proxy if they explicitly ask for it.
I got around this by using an app called drony, which doesn't require the device to be rooted. I have a few apps and they all happily proxied to drony without having to do anything to the app. I then set drony to proxy to fiddler on my local machine. Instructions to set this up are all here: Setup global proxy in your android device without rooting!
I guess many users will come here in search of a way to capture and analyze Android app traffic, although this is not explicitly mentioned in the OP. So please forgive my only 50% hit of the question:
If you change the proxy settings via Wifi->Settings->Proxy(Manual) , as informed by your device, it is clearly not possible to apply in all applications. Despite this, it is possible to achieve the result, without rooting your device, with the Drony application.
On one of the Androids that I use, you tap and hold on the wireless network that you are connected to in the "settings"-"wireless and network"-"Wi-Fi settings" and you get a "modify network config" option and ticking advanced will allow you to change the proxy for that network.
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After trying some workarounds, figured it was the proxy. I added settings including some through terminal using "gradlew -Dhttp.proxyHost etc" but now I am at home and trying to remove all proxy settings and I figure the ones added through terminal are the last but can't find how to remove or set to null.
You can try the latest Buildship snapshot which has a support for proxy settings. If you set the http/https proxy settings in the Eclipse preferences UI, Buildship and Gradle will automatically make use of it.
While those browsers have full support for HTTP/SOCKS proxies under all other OSes (Linux, OSX and even Windows), they are lacking it completely under Android. There's no setting at all to configure one.
There's some system-wide support when you configure wifi, but that's not what I talk about. I mean the good ol' application-level proxy support. I don't want to send all traffic through a proxy, but just that for a specific browser on demand.
There's no apparent "technical" reason for that lack. I suspect it'd be something related to the "Android Program Policy" (or whatever else it's called).In my opinion it looks like an intentional choice as the system-level proxy you can normally configure could be leaking information for some reason or bug.
N.B. Starting with v68.11 Firefox for Android doesn't provide anymore access to settings via the about:config pseudo-page, even if it's listed in about:about pseudo-page. This is not mentioned within the release notes and means that there's no way anymore to use a proxy within a browser.However Firefox Nightly releases still allow users to access about:config, you can install theses builds to use a proxy.
edit: I forgot to mention that the ports are of course enabled, the portforwarding for the turn server do not go through the reverse proxy but directly to the server 2 with the Nextcloud installation.
A big difference to @Janon solution here is that I have only SSL encryption up to the proxy. The communication in my private network between the proxy and the NC runs over http (unencrypted). This is similar to the linked settings in the as solution marked post. Could this be the problem? Does the Android app require continuous SSL encryption (also behind the proxy) when accessing from the mobile network (ipv6)?
This article will show you how to configure the Android proxy settings to set up or disable a proxy server on your Android device. Note that we use a OnePlus device; your proxy configuration settings might slightly differ.
As of Android N, additional steps area required to to add configuration to your application so that it trusts the SSL certificates generated by Charles SSL proxying. This means that you can only use SSL proxying with applications that you control.
In order to configure your app to trust Charles, you must first add a Network Security Configuration File to your app. This file can override the system default, enabling your app to trust user-installed CA certificates, such as the Charles Root Certificate.
The key thing is to have a proper certificate configured on the reverse proxy (in my case haproxy). So I think it is not allowed to have a self signed certificate (saw that in another post). So I use a let's encrypt certificate.
There is a potential issue with Android devices where a proxy is set by an app or an update. This will interfere with your Wifi connection and you will need to turn it off. There may be slight variations to these instructions because different devices have different manufacturers.
Recently, my team had a problem. When our app was talking to our test servers, we had a seemingly identical request that worked from iPhone and failed from Android. The failure was that instead of returning the expected 200 OK with a response, the server responds with 302 Found and redirects the caller to an authentication page where they must authenticate themselves when approaching from outside a corporate network. This authentication is fine, but it was unclear why the same request returned 200 OK on iPhone and 302 Found on Android.
Tons of stuff: the actual content, supporting CSS, Javascript, images, and external hosts that have nothing to do with CNN, that I guess are some sort of tracking/analytics. Pretty informative, actually. Just try using some apps on your phone and see what kinds of data they send. (Or turn on Mac OS X proxying and do the same on your computer.)
curl is another amazing commandline tool for HTTP. You can perform any HTTP request/response and just watch things happen. Charlesproxy had handily already captured all the parameters, so all I needed to do was to navigate to the right tab to grab the POST parameters (the request in question was a POST)
So if I ran the above, indeed, the request showed up in my Charlesproxy next to the failing request from Android. Now it was really time for deep detective work and comparing each bit and piece of the requests.
Could you please confirm if proxy is supported on the Android GP App. Our end users are using proxies on mobile devices including iOS, Chromebooks, and Android. It appears that only the GP clients on Android are having issues connecting. The GP client reports that there is no internet connection. This used to work 1-2 weeks ago(on old GP version 5.2.4) so not sure if the new GP App on Android is causing the problem.
Below article says the proxy setting is only supported on Windows and MacOS, but it actually works on iOS and Chromebooks, so could you please confirm? thanks.
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I've pentested a lot of websites and a few apps too but this app eludes them all.On the websites, when there's a websocket upgrade the BURP proxy recognizes it and starts showing it in the websockets tab. Somewhat similar happens on the apps, but not on this one.
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After installing a firewall and a Web proxy on my home LAN to try and protect my children from **bleep** and abuse on the Web, Spotify on Android has ceased to work. The desktop version offers to set the proxy manually, and works with those settings.
But Spotify for Android ignores the system proxy settings, and offers no option to set it in the app. When Spotify is started, it shows the error message "no internet connection". The "idea" to implement proper proxy support on mobile versions of Spotify is not new, but it has been closed a few months ago, the second time already, for lack of support. The first time the idea came up was more than 4 years ago.
Spotify requires unrestricted internet access in order to work. Feel free to vote and comment in the idea you found. Even if an idea is inactive as of now, it might change in the future depending on how popular it becomes.
as I already mentioned in the first post, my firewall settings are such that Spotify does work - on the desktop, if the proxy settings are made. What I'm complaining about is that the Android client doesn't have the same functionality. Web proxies are not precisely a new technology.
I'm just surprised that so few people seem to be interested in an important security feature like this. It's interesting to see that the current top-voted "idea" is banning Alex Jones. People who want to save their children from reading Jones' rants might also be interested in installing an effective web filter, no? But they can't if they want to use Spotify on their mobile phones...
When we start the capsule client on the android device we lose Internet because we are routing all traffic to the tunnel and to get out to the internet we need to configure the proxy. The only way I think I can do that is using https_mapped but is a bad solution with a lot of impact on performance.
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