diff --git a/.github/workflows/publish-exe.yml b/.github/workflows/publish-exe.yml
index 4a316b5..5e9e500 100644
--- a/.github/workflows/publish-exe.yml
+++ b/.github/workflows/publish-exe.yml
@@ -62,14 +62,15 @@ jobs:
           else
             cargo build --all-features --release --target ${{ matrix.target }}
           fi
+          cbindgen --config cbindgen.toml -l C -o target/tun2proxy-ffi.h
           if [[ "${{ matrix.host_os }}" == "windows-latest" ]]; then
             powershell -Command "(Get-Item README.md).LastWriteTime = Get-Date"
             powershell -Command "(Get-Item target/${{ matrix.target }}/release/wintun.dll).LastWriteTime = Get-Date"
-            powershell Compress-Archive -Path target/${{ matrix.target }}/release/tun2proxy.exe, README.md, target/${{ matrix.target }}/release/wintun.dll -DestinationPath mypubdir4/tun2proxy-${{ matrix.target }}.zip
+            powershell Compress-Archive -Path target/${{ matrix.target }}/release/tun2proxy.exe, README.md, target/tun2proxy-ffi.h, target/${{ matrix.target }}/release/tun2proxy.dll, target/${{ matrix.target }}/release/wintun.dll -DestinationPath mypubdir4/tun2proxy-${{ matrix.target }}.zip
           elif [[ "${{ matrix.host_os }}" == "macos-latest" ]]; then
-            zip -j mypubdir4/tun2proxy-${{ matrix.target }}.zip target/${{ matrix.target }}/release/tun2proxy README.md
+            zip -j mypubdir4/tun2proxy-${{ matrix.target }}.zip target/${{ matrix.target }}/release/tun2proxy README.md target/tun2proxy-ffi.h target/${{ matrix.target }}/release/libtun2proxy.dylib
           elif [[ "${{ matrix.host_os }}" == "ubuntu-latest" ]]; then
-            zip -j mypubdir4/tun2proxy-${{ matrix.target }}.zip target/${{ matrix.target }}/release/tun2proxy README.md
+            zip -j mypubdir4/tun2proxy-${{ matrix.target }}.zip target/${{ matrix.target }}/release/tun2proxy README.md target/tun2proxy-ffi.h target/${{ matrix.target }}/release/libtun2proxy.so
           fi
 
       - name: Publish
diff --git a/Cargo.toml b/Cargo.toml
index 7db99ec..5bb8714 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "tun2proxy"
-version = "0.2.5"
+version = "0.2.6"
 edition = "2021"
 license = "MIT"
 repository = "https://github.com/blechschmidt/tun2proxy"
diff --git a/apple/tun2proxy/Tun2proxyWrapper.m b/apple/tun2proxy/Tun2proxyWrapper.m
index 76f6ac7..3620390 100644
--- a/apple/tun2proxy/Tun2proxyWrapper.m
+++ b/apple/tun2proxy/Tun2proxyWrapper.m
@@ -15,8 +15,10 @@
 + (void)startWithConfig:(NSString *)proxy_url
                  tun_fd:(int)tun_fd
                 tun_mtu:(uint32_t)tun_mtu
-           dns_strategy:(ArgDns)dns_strategy
-              verbosity:(ArgVerbosity)verbosity {
+           dns_over_tcp:(bool)dns_over_tcp
+                verbose:(bool)verbose {
+  ArgDns dns_strategy = dns_over_tcp ? OverTcp : Direct;
+  ArgVerbosity verbosity = verbose ? Trace : Info;
   tun2proxy_run(proxy_url.UTF8String, tun_fd, tun_mtu, dns_strategy, verbosity);
 }
 
diff --git a/src/lib.rs b/src/lib.rs
index 5bd32b5..d1fde87 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -4,10 +4,10 @@ use crate::{
     session_info::{IpProtocol, SessionInfo},
     virtual_dns::VirtualDns,
 };
-pub use clap;
 use ipstack::stream::{IpStackStream, IpStackTcpStream, IpStackUdpStream};
 use proxy_handler::{ProxyHandler, ProxyHandlerManager};
 use socks::SocksProxyManager;
+pub use socks5_impl::protocol::UserKey;
 use std::{collections::VecDeque, future::Future, net::SocketAddr, pin::Pin, sync::Arc};
 use tokio::{
     io::{AsyncRead, AsyncReadExt, AsyncWrite, AsyncWriteExt},