feat: enable udpgw client via tun2proxy CLI API — no fork needed#271
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therealaleph merged 1 commit intotherealaleph:mainfrom Apr 26, 2026
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Uses tun2proxy_run_with_cli_args (the C API) via dlsym instead of modifying the JNI run() signature. The upstream tun2proxy maintainer recommended this path — the CLI API accepts --udpgw-server natively. - Cargo.toml: enable udpgw feature, remove [patch.crates-io] - MhrvVpnService.kt: build CLI args with --udpgw-server in full mode - Native.kt + android_jni.rs: dlsym wrapper for the C API - Tun2proxy.kt: reverted to upstream signature No fork, no patch, no submodule. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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Whish there was an easy way to use this on the other platforms as well. do you think proxifier would be able to use the somehow? |
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@Feiabyte |
does that mean if i use proxifier i can get the same results as on android? |
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Apr 26, 2026
Move from yyoyoian-pixel/tun2proxy fork (with patched JNI signature) to canonical tun2proxy 0.7.21 from crates.io with feature flag "udpgw". Cargo.toml [patch.crates-io] section removed entirely. The Android side now resolves tun2proxy_run_with_cli_args at runtime via dlsym from libtun2proxy.so, which is the upstream maintainer's recommended path for callers that need full CLI flexibility. mhrv-rs builds the CLI string in MhrvVpnService and passes it through Native.runTun2proxy → src/android_jni.rs → dlsym → tun2proxy. Future tun2proxy upgrades are now a single Cargo version bump. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Enables udpgw on Android using upstream tun2proxy's
tun2proxy_run_with_cli_argsC API — no fork, no patch, no submodule.The tun2proxy maintainer recommended this approach over modifying the JNI
run()signature. The CLI API accepts--udpgw-servernatively and offers more flexibility.How it works
Cargo.toml: enableudpgwfeature on upstream tun2proxy (features = ["udpgw"]), remove[patch.crates-io]MhrvVpnService.kt: builds CLI args string with--udpgw-server 198.18.0.1:7300in full modeNative.runTun2proxy()→ Rust JNI wrapper resolvestun2proxy_run_with_cli_argsat runtime viadlsymfromlibtun2proxy.soTun2proxy.kt: reverted to upstream signature (no extra parameter)Why dlsym?
Android's linker namespaces prevent compile-time cross-
.sosymbol resolution.libmhrv_rs.socan't statically link againstlibtun2proxy.so— the app crashes on load withUnsatisfiedLinkError. Runtimedlsymavoids this cleanly.Changes
Cargo.tomlfeatures = ["udpgw"], remove[patch.crates-io]Cargo.lockMhrvVpnService.kt--udpgw-serverin full modeNative.ktrunTun2proxy(cliArgs, tunMtu)declarationandroid_jni.rsdlsymwrapper fortun2proxy_run_with_cli_argsTun2proxy.ktTest plan
Tun2proxy.stop()cleanly shuts down🤖 Generated with Claude Code