A bit over my head here. I'm using charles and it works fine inspecting all of my retrofit calls. Bu...

# squarelibraries

[Colton Idle]

A bit over my head here. I'm using charles and it works fine inspecting all of my retrofit calls. But when I use mockHttpServer from okhttp and I'm hooked up to charles I get a failure.

<h1>Charles Error Report</h1>
<h2>Failed to connect to remote host</h2>

Is there some kind of configuration I can set on mockHttpServer so I can have it set to localhost but also use charles?

[ephemient]

"localhost" to Charles is not the same host as "localhost" on device

[ephemient]

if you run the mock server directly on the computer running Charles instead it might work

[Colton Idle]

That might be true, but I'm constrained to running the mockHttpServer on the device and so I want to see that traffic in charles even though it's mocked.

I can see the requests come into charles, but the response is always the error snippet in the OP

[ephemient]

that's entirely expected, when you're using the proxy it's Charles attempting to connect to "localhost", which from its perspective doesn't respond

[ephemient]

you may be able to hack something together with adb forward tcp:8080 tcp:8080 (or whatever your port is)

[Colton Idle]

will look into those commands. my main problem is that my testers have these builds available to them where I run a mockwebserver (because our backend isn't ready) and they are used to using charles proxy and so an adb command isn't really a solution that'd work for my situation.

[Colton Idle]

Hm. I wonder if this gets me any closer. https://www.charlesproxy.com/documentation/faqs/localhost-traffic-doesnt-appear-in-charles/

But I guess in this case... localhost traffic is showing up, it's just that it's androids localhost, and not the machine I'm running on.

[ephemient]

if you're using Charles, it has to be able to forward (proxy) connections to the server, period. if you can't reliably use ADB there's probably no other reliable methods either

[ephemient]

there's other tools like https://github.com/ChuckerTeam/chucker and https://fbflipper.com/docs/getting-started/android-native/ that hook in at the network layer of the application itself instead of going through an external proxy

[Colton Idle]

Gotcha. Looks like I won't see my image library load requests if I go through chucker (I have it setup now). Looks like I have some decisions to make. Appreciate the tips

[Colton Idle]

Just following up on this. When you setup a proxy on your device, you can omit certain domains in the wifi settings. So on your phone you can just do that and I can have my localhost connections work properly, while being able to inspect other traffic (like images). 👍

[ephemient]

ah, it wasn't clear that you didn't want to inspect localhost traffic but had other traffic instead

[Colton Idle]

I mean. Ideally I'd be able to see both, but yeah the localhost traffic I can modify, but the other calls I can't.