refactor: remove port_scanner dependency and simplify port checking logic

Cargo.lock

@@ -1220,7 +1220,6 @@ dependencies = [
  "open",
  "parking_lot",
  "percent-encoding",
- "port_scanner",
  "regex",
  "reqwest",
  "reqwest_dav",
@@ -5656,12 +5655,6 @@ dependencies = [
  "universal-hash",
 ]
 
-[[package]]
-name = "port_scanner"
-version = "0.1.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "325a6d2ac5dee293c3b2612d4993b98aec1dff096b0a2dae70ed7d95784a05da"
-
 [[package]]
 name = "portable-atomic"
 version = "1.11.1"

src-tauri/Cargo.toml

@@ -61,7 +61,6 @@ nanoid = "0.4"
 chrono = "0.4.42"
 boa_engine = "0.21.0"
 once_cell = { version = "1.21.3", features = ["parking_lot"] }
-port_scanner = "0.1.5"
 delay_timer = "0.11.6"
 percent-encoding = "2.3.2"
 reqwest = { version = "0.12.24", features = ["json", "cookies", "rustls-tls"] }

src-tauri/src/cmd/network.rs

@@ -99,8 +99,5 @@ pub fn get_network_interfaces_info() -> CmdResult<Vec<NetworkInterface>> {
 
 #[tauri::command]
 pub fn is_port_in_use(port: u16) -> bool {
-    match TcpListener::bind(("127.0.0.1", port)) {
-        Ok(_listener) => false,
-        Err(_) => true,
-    }
+    TcpListener::bind(("127.0.0.1", port)).is_err()
 }

src-tauri/src/utils/server.rs

@@ -1,5 +1,6 @@
 use super::resolve;
 use crate::{
+    cmd::is_port_in_use,
     config::{Config, DEFAULT_PAC, IVerge},
     module::lightweight,
     process::AsyncHandler,
@@ -9,7 +10,6 @@ use anyhow::{Result, bail};
 use clash_verge_logging::{Type, logging, logging_error};
 use once_cell::sync::OnceCell;
 use parking_lot::Mutex;
-use port_scanner::local_port_available;
 use reqwest::ClientBuilder;
 use smartstring::alias::String;
 use std::time::Duration;
@@ -27,7 +27,7 @@ static SHUTDOWN_SENDER: OnceCell<Mutex<Option<oneshot::Sender<()>>>> = OnceCell:
 /// check whether there is already exists
 pub async fn check_singleton() -> Result<()> {
     let port = IVerge::get_singleton_port();
-    if !local_port_available(port) {
+    if is_port_in_use(port) {
         let client = ClientBuilder::new().timeout(Duration::from_millis(500)).build()?;
         // 需要确保 Send
         #[allow(clippy::needless_collect)]