MCP Server Tauri

//! Simple port discovery for multiple Tauri instances. //! //! This module provides a lightweight mechanism for multiple Tauri apps //! to coexist on the same machine by finding available ports dynamically. /// Finds an available port for the WebSocket server. /// /// # Arguments /// /// * `bind_address` - The address to bind to (e.g., "0.0.0.0" or "127.0.0.1") /// * `base_port` - The starting port number to scan from /// /// # Returns /// /// An available port number in the range base_port to base_port+99, or base_port if none are available. pub fn find_available_port(bind_address: &str, base_port: u16) -> u16 { let max_attempts = 100; for offset in 0..max_attempts { let port = base_port + offset; if is_port_available(bind_address, port) { return port; } } // If no ports in the range are available, use default // (The app will need to handle port conflicts) base_port } /// Checks if a port is available on the specified bind address. fn is_port_available(bind_address: &str, port: u16) -> bool { use std::net::TcpListener; TcpListener::bind(format!("{bind_address}:{port}")).is_ok() } #[cfg(test)] mod tests { use super::*; #[test] fn test_port_availability_all_interfaces() { let port = find_available_port("0.0.0.0", 9223); assert!(port >= 9223); assert!(port < 9323); } #[test] fn test_port_availability_localhost() { let port = find_available_port("127.0.0.1", 9223); assert!(port >= 9223); assert!(port < 9323); } #[test] fn test_port_availability_custom_base() { let port = find_available_port("127.0.0.1", 9400); assert!(port >= 9400); assert!(port < 9500); } }