Not connecting to the internet when Vpn is enabled

[dmitrybbch]

Hi, I'm trying to build a really simple local VpnService that just sends the packages without actually doing anything to them, and looking for similiar projects (because I don't know much about networking) I found yours.
Download and build works fine, however when launching on Android it seems like internet connection doesn't work anymore.
Is this expected?

Thanks,
Dmitry

[LipiLee]

Hi, @dmitrybbch No, it isn't expected. Internet connection should work fine after running this app. If you need a very simple VpnService sample code, check the Google's original Android VPN sample.
https://github.com/aosp-mirror/platform_development/tree/master/samples/ToyVpn .

[dmitrybbch]

Thanks! But it seems to me that the sample from Google is not a local VPN, it has to connect to an external server. So I guess yours is the most similar to what I had in mind.
On the connecting issue, if it helps, this is the Log:
03-17 13:49:44.348 28176-28311/com.lipisoft.toyshark E/SessionHandler: **** ==> Session not found: 10.120.0.1:33519-66.102.1.188:5228
03-17 13:49:45.460 28176-28311/com.lipisoft.toyshark E/SessionHandler: **** ==> Session not found: 10.120.0.1:56871-74.125.200.188:443
03-17 13:49:46.273 28176-28311/com.lipisoft.toyshark E/SessionHandler: **** ==> Session not found: 10.120.0.1:51401-169.47.5.248:5222
03-17 13:49:46.781 28176-28311/com.lipisoft.toyshark E/SessionHandler: **** ==> Session not found: 10.120.0.1:56566-169.60.79.89:80
03-17 13:49:54.685 28176-28311/com.lipisoft.toyshark E/SessionHandler: **** ==> Session not found: 10.120.0.1:40942-31.13.86.34:443
(and keeps going)

[LipiLee]

@dmitrybbch, thanks for your critical bug report. I found the current master version was not working well. I committed some patches for it.

[CandySu]

[CandySu]

I fetch the latest code,then Logcat output too much error info as before

[LipiLee]

@CandySu , thanks for your report. So I submitted a patch for it. And this project have used AT&T ARO project(https://github.com/attdevsupport/ARO) as TCP/IP stack. Unfortunately it has been not clean as you know. If you want to clean it, welcome to your PRs for it.

[CandySu]

@LipiLee Thank you for your kindly help and sharing.