Removing use of clap::builder::PossibleValuesParser

README.md

@@ -59,6 +59,7 @@ Check out the `docker-compose-proxy.yml` or `docker-compose-extensive.yml` file
 
 
 ## TODO
+- [ ] make socksx work for macOS
 - [ ] support chaining in socks 5
 - [ ] add badge for coverage (coveralls)
 - [ ] add badge for crates link 

socksx/examples/client.rs

@@ -3,7 +3,6 @@
 /// This also serves as a test to ensure that the crate works as expected.
 use anyhow::Result;
 use clap::Parser;
-use clap::builder::PossibleValuesParser;
 use socksx::{Socks5Client, Socks6Client};
 use tokio::io::AsyncWriteExt;
 
@@ -12,7 +11,7 @@ use tokio::io::AsyncWriteExt;
 #[derive(Debug, Parser)]
 #[clap(name = "Client")]
 struct Arguments {
-    #[clap(name="VERSION", short='s', long="socks", value_parser=PossibleValuesParser::new(["5", "6"]), default_value="6", help="The SOCKS version to use")]
+    #[clap(name="VERSION", short='s', long="socks", default_value="6", help="The SOCKS version to use")]
     version    : u8,
     #[clap(name="PROXY_HOST", long="host", default_value="127.0.0.1", help="The IP/hostname of the proxy")]
     proxy_host : String,
@@ -38,11 +37,11 @@ async fn main() -> Result<()> {
     let proxy_addr = format!("{}:{}", args.proxy_host, args.proxy_port);
     let dest_addr = format!("{}:{}", args.dest_host, args.dest_port);
 
-    // Determine the SOCKS version specified in the arguments.
+    // Determine the appropriate SOCKS handler based on the specified version and restricting them to 5 and 6
     match args.version {
         5 => connect_v5(proxy_addr, dest_addr).await,
         6 => connect_v6(proxy_addr, dest_addr).await,
-        version => panic!("Unsupported version: {}", version),
+        version => { eprintln!("ERROR: Unsupported SOCKS-version '{version}' (supported: `5`, `6`)"); std::process::exit(1); },
     }
 }
 

socksx/examples/functions.rs

@@ -10,7 +10,6 @@ use bytes::BytesMut;
 use chacha20::{ChaCha20, Key, Nonce};
 use chacha20::cipher::{KeyIvInit as _, StreamCipher};
 use clap::Parser;
-use clap::builder::PossibleValuesParser;
 use dotenv::dotenv;
 use pin_project_lite::pin_project;
 use tokio::io::{self, AsyncBufRead, BufReader, BufWriter};
@@ -34,7 +33,7 @@ struct Args {
     port: u16,
 
     /// SOCKS version
-    #[clap(short, long, env = "SOCKS", default_value = "6", value_parser = PossibleValuesParser::new(["5", "6"]))]
+    #[clap(short, long, env = "SOCKS", default_value = "6")]
     socks: u8,
 
     #[clap(subcommand)]
@@ -63,10 +62,11 @@ async fn main() -> Result<()> {
     // Create a TCP listener bound to the specified host and port.
     let listener = TcpListener::bind(format!("{}:{}", args.host, args.port)).await?;
     // Determine the appropriate SOCKS handler based on the specified version.
+    // Determine the appropriate SOCKS handler based on the specified version and restricting them to 5 and 6
     let handler: Handler = match args.socks {
         5 => Arc::new(Socks5Handler::default()),
         6 => Arc::new(Socks6Handler::default()),
-        _ => unreachable!(),
+        version => { eprintln!("ERROR: Unsupported SOCKS-version '{version}' (supported: `5`, `6`)"); std::process::exit(1); },
     };
 
     // Main loop for accepting incoming connections and processing them.

socksx/examples/redirector.rs

@@ -3,7 +3,6 @@
 /// through a proxy.
 use anyhow::Result;
 use clap::Parser;
-use clap::builder::PossibleValuesParser;
 use tokio::net::{TcpListener, TcpStream};
 
 use socksx::{self, Socks5Client, Socks6Client};
@@ -13,7 +12,7 @@ use socksx::{self, Socks5Client, Socks6Client};
 #[derive(Debug, Parser)]
 #[clap(name = "Redirector")]
 struct Arguments {
-    #[clap(name="VERSION", short='s', long="socks", value_parser=PossibleValuesParser::new(["5", "6"]), default_value="6", help="The SOCKS version to use")]
+    #[clap(name="VERSION", short='s', long="socks", default_value="6", help="The SOCKS version to use")]
     version    : u8,
     #[clap(name="PROXY_HOST", long="host", default_value="127.0.0.1", help="The IP/hostname of the proxy")]
     proxy_host : String,
@@ -33,6 +32,7 @@ async fn main() -> Result<()> {
     let proxy_addr = format!("{}:{}", args.proxy_host, args.proxy_port);
 
     let listener = TcpListener::bind("127.0.0.1:42000").await?;
+    // Determine the appropriate SOCKS handler based on the specified version and restricting them to 5 and 6
     match args.version {
         5 => {
             let client = Socks5Client::new(proxy_addr, None).await?;
@@ -50,7 +50,7 @@ async fn main() -> Result<()> {
                 tokio::spawn(redirect_v6(stream, client.clone()));
             }
         }
-        version => panic!("Unsupported version: {}", version),
+        version => { eprintln!("ERROR: Unsupported SOCKS-version '{version}' (supported: `5`, `6`)"); std::process::exit(1); },
     };
 }
 

socksx/src/main.rs

@@ -12,7 +12,6 @@ use std::{convert::TryInto, sync::Arc};
 
 use anyhow::Result;
 use clap::Parser;
-use clap::builder::PossibleValuesParser;
 use dotenv::dotenv;
 use itertools::Itertools;
 use log::LevelFilter;
@@ -50,7 +49,7 @@ struct Args {
     port: u16,
 
     /// SOCKS version
-    #[clap(short, long, env = "SOCKS", default_value = "6", value_parser = PossibleValuesParser::new(["5", "6"]))]
+    #[clap(short, long, env = "SOCKS", default_value = "6")]
     socks: u8,
 }
 
@@ -93,6 +92,7 @@ async fn main() -> Result<()> {
 
     // Bind TCP listener to the specified host and port
     let listener = TcpListener::bind(format!("{}:{}", args.host, args.port)).await?;
+    // Determine the appropriate SOCKS handler based on the specified version and restricting them to 5 and 6
     let handler: Handler = match args.socks {
         5 => Arc::new(Socks5Handler::new(chain)),
         6 => Arc::new(Socks6Handler::new(chain)),