refactor: downgrade tcp_connection functionality to test utilities

- Remove handle, target, target_configure, target_connection modules from main library
- Create test_utils module in test project to contain temporary connection functionality
- Update import paths in test files
- Keep instance and error modules as core functionality
- Adjust vcs_test configurations to adapt to new test structure

5 files changed, 0 insertions, 357 deletions

diff --git a/crates/utils/tcp_connection/src/handle.rs b/crates/utils/tcp_connection/src/handle.rs
deleted file mode 100644
index ee77b43..0000000
--- a/crates/utils/tcp_connection/src/handle.rs
+++ /dev/null
@@ -1,10 +0,0 @@
-use crate::instance::ConnectionInstance;
-use std::future::Future;
-
-pub trait ClientHandle<RequestServer> {
-    fn process(instance: ConnectionInstance) -> impl Future<Output = ()> + Send;
-}
-
-pub trait ServerHandle<RequestClient> {
-    fn process(instance: ConnectionInstance) -> impl Future<Output = ()> + Send;
-}
diff --git a/crates/utils/tcp_connection/src/lib.rs b/crates/utils/tcp_connection/src/lib.rs
index 928457b..a5b5c20 100644
--- a/crates/utils/tcp_connection/src/lib.rs
+++ b/crates/utils/tcp_connection/src/lib.rs
@@ -1,10 +1,4 @@
-pub mod target;
-pub mod target_configure;
-pub mod target_connection;
-
 #[allow(dead_code)]
 pub mod instance;
 
-pub mod handle;
-
 pub mod error;
diff --git a/crates/utils/tcp_connection/src/target.rs b/crates/utils/tcp_connection/src/target.rs
deleted file mode 100644
index 88b931a..0000000
--- a/crates/utils/tcp_connection/src/target.rs
+++ /dev/null
@@ -1,198 +0,0 @@
-use crate::handle::{ClientHandle, ServerHandle};
-use crate::target_configure::{ClientTargetConfig, ServerTargetConfig};
-use serde::{Deserialize, Serialize};
-use std::{
-    fmt::{Display, Formatter},
-    marker::PhantomData,
-    net::{AddrParseError, IpAddr, Ipv4Addr, SocketAddr},
-    str::FromStr,
-};
-use tokio::net::lookup_host;
-
-const DEFAULT_PORT: u16 = 8080;
-
-#[derive(Debug, Serialize, Deserialize)]
-pub struct TcpServerTarget<Client, Server>
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    /// Client Config
-    client_cfg: Option<ClientTargetConfig>,
-
-    /// Server Config
-    server_cfg: Option<ServerTargetConfig>,
-
-    /// Server port
-    port: u16,
-
-    /// Bind addr
-    bind_addr: IpAddr,
-
-    /// Client Phantom Data
-    _client: PhantomData<Client>,
-
-    /// Server Phantom Data
-    _server: PhantomData<Server>,
-}
-
-impl<Client, Server> Default for TcpServerTarget<Client, Server>
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    fn default() -> Self {
-        Self {
-            client_cfg: None,
-            server_cfg: None,
-            port: DEFAULT_PORT,
-            bind_addr: IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
-            _client: PhantomData,
-            _server: PhantomData,
-        }
-    }
-}
-
-impl<Client, Server> From<SocketAddr> for TcpServerTarget<Client, Server>
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    /// Convert SocketAddr to TcpServerTarget
-    fn from(value: SocketAddr) -> Self {
-        Self {
-            port: value.port(),
-            bind_addr: value.ip(),
-            ..Self::default()
-        }
-    }
-}
-
-impl<Client, Server> From<TcpServerTarget<Client, Server>> for SocketAddr
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    /// Convert TcpServerTarget to SocketAddr
-    fn from(val: TcpServerTarget<Client, Server>) -> Self {
-        SocketAddr::new(val.bind_addr, val.port)
-    }
-}
-
-impl<Client, Server> Display for TcpServerTarget<Client, Server>
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
-        write!(f, "{}:{}", self.bind_addr, self.port)
-    }
-}
-
-impl<Client, Server> TcpServerTarget<Client, Server>
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    /// Create target by address
-    pub fn from_addr(addr: impl Into<IpAddr>, port: impl Into<u16>) -> Self {
-        Self {
-            port: port.into(),
-            bind_addr: addr.into(),
-            ..Self::default()
-        }
-    }
-
-    /// Try to create target by string
-    pub fn from_address_str<'a>(addr_str: impl Into<&'a str>) -> Result<Self, AddrParseError> {
-        let socket_addr = SocketAddr::from_str(addr_str.into());
-        match socket_addr {
-            Ok(socket_addr) => Ok(Self::from_addr(socket_addr.ip(), socket_addr.port())),
-            Err(err) => Err(err),
-        }
-    }
-
-    /// Try to create target by domain name
-    pub async fn from_domain<'a>(domain: impl Into<&'a str>) -> Result<Self, std::io::Error> {
-        match domain_to_addr(domain).await {
-            Ok(domain_addr) => Ok(Self::from(domain_addr)),
-            Err(e) => Err(e),
-        }
-    }
-
-    /// Set client config
-    pub fn client_cfg(mut self, config: ClientTargetConfig) -> Self {
-        self.client_cfg = Some(config);
-        self
-    }
-
-    /// Set server config
-    pub fn server_cfg(mut self, config: ServerTargetConfig) -> Self {
-        self.server_cfg = Some(config);
-        self
-    }
-
-    /// Add client config
-    pub fn add_client_cfg(&mut self, config: ClientTargetConfig) {
-        self.client_cfg = Some(config);
-    }
-
-    /// Add server config
-    pub fn add_server_cfg(&mut self, config: ServerTargetConfig) {
-        self.server_cfg = Some(config);
-    }
-
-    /// Get client config ref
-    pub fn get_client_cfg(&self) -> Option<&ClientTargetConfig> {
-        self.client_cfg.as_ref()
-    }
-
-    /// Get server config ref
-    pub fn get_server_cfg(&self) -> Option<&ServerTargetConfig> {
-        self.server_cfg.as_ref()
-    }
-
-    /// Get SocketAddr of TcpServerTarget
-    pub fn get_addr(&self) -> SocketAddr {
-        SocketAddr::new(self.bind_addr, self.port)
-    }
-}
-
-/// Parse Domain Name to IpAddr via DNS
-async fn domain_to_addr<'a>(domain: impl Into<&'a str>) -> Result<SocketAddr, std::io::Error> {
-    let domain = domain.into();
-    let default_port: u16 = DEFAULT_PORT;
-
-    if let Ok(socket_addr) = domain.parse::<SocketAddr>() {
-        return Ok(match socket_addr.ip() {
-            IpAddr::V4(_) => socket_addr,
-            IpAddr::V6(_) => SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), socket_addr.port()),
-        });
-    }
-
-    if let Ok(_v6_addr) = domain.parse::<std::net::Ipv6Addr>() {
-        return Ok(SocketAddr::new(
-            IpAddr::V4(Ipv4Addr::LOCALHOST),
-            default_port,
-        ));
-    }
-
-    let (host, port_str) = if let Some((host, port)) = domain.rsplit_once(':') {
-        (host.trim_matches(|c| c == '[' || c == ']'), Some(port))
-    } else {
-        (domain, None)
-    };
-
-    let port = port_str
-        .and_then(|p| p.parse::<u16>().ok())
-        .map(|p| p.clamp(0, u16::MAX))
-        .unwrap_or(default_port);
-
-    let mut socket_iter = lookup_host((host, 0)).await?;
-
-    if let Some(addr) = socket_iter.find(|addr| addr.is_ipv4()) {
-        return Ok(SocketAddr::new(addr.ip(), port));
-    }
-
-    Ok(SocketAddr::new(IpAddr::V4(Ipv4Addr::LOCALHOST), port))
-}
diff --git a/crates/utils/tcp_connection/src/target_configure.rs b/crates/utils/tcp_connection/src/target_configure.rs
deleted file mode 100644
index d739ac9..0000000
--- a/crates/utils/tcp_connection/src/target_configure.rs
+++ /dev/null
@@ -1,53 +0,0 @@
-use serde::{Deserialize, Serialize};
-
-#[derive(Default, Debug, Clone, Copy, Serialize, Deserialize)]
-pub struct ServerTargetConfig {
-    /// Only process a single connection, then shut down the server.
-    once: bool,
-
-    /// Timeout duration in milliseconds. (0 is Closed)
-    timeout: u64,
-}
-
-impl ServerTargetConfig {
-    /// Set `once` to True
-    /// This method configures the `once` field of `ServerTargetConfig`.
-    pub fn once(mut self) -> Self {
-        self.once = true;
-        self
-    }
-
-    /// Set `timeout` to the given value
-    /// This method configures the `timeout` field of `ServerTargetConfig`.
-    pub fn timeout(mut self, timeout: u64) -> Self {
-        self.timeout = timeout;
-        self
-    }
-
-    /// Set `once` to the given value
-    /// This method configures the `once` field of `ServerTargetConfig`.
-    pub fn set_once(&mut self, enable: bool) {
-        self.once = enable;
-    }
-
-    /// Set `timeout` to the given value
-    /// This method configures the `timeout` field of `ServerTargetConfig`.
-    pub fn set_timeout(&mut self, timeout: u64) {
-        self.timeout = timeout;
-    }
-
-    /// Check if the server is configured to process only a single connection.
-    /// Returns `true` if the server will shut down after processing one connection.
-    pub fn is_once(&self) -> bool {
-        self.once
-    }
-
-    /// Get the current timeout value in milliseconds.
-    /// Returns the timeout duration. A value of 0 indicates the connection is closed.
-    pub fn get_timeout(&self) -> u64 {
-        self.timeout
-    }
-}
-
-#[derive(Default, Debug, Clone, Copy, Serialize, Deserialize)]
-pub struct ClientTargetConfig {}
diff --git a/crates/utils/tcp_connection/src/target_connection.rs b/crates/utils/tcp_connection/src/target_connection.rs
deleted file mode 100644
index 0462f7b..0000000
--- a/crates/utils/tcp_connection/src/target_connection.rs
+++ /dev/null
@@ -1,90 +0,0 @@
-use tokio::{
-    net::{TcpListener, TcpSocket},
-    spawn,
-};
-
-use crate::{
-    error::TcpTargetError,
-    handle::{ClientHandle, ServerHandle},
-    instance::ConnectionInstance,
-    target::TcpServerTarget,
-    target_configure::ServerTargetConfig,
-};
-
-impl<Client, Server> TcpServerTarget<Client, Server>
-where
-    Client: ClientHandle<Server>,
-    Server: ServerHandle<Client>,
-{
-    /// Attempts to establish a connection to the TCP server.
-    ///
-    /// This function initiates a connection to the server address
-    /// specified in the target configuration.
-    ///
-    /// This is a Block operation.
-    pub async fn connect(&self) -> Result<(), TcpTargetError> {
-        let addr = self.get_addr();
-        let Ok(socket) = TcpSocket::new_v4() else {
-            return Err(TcpTargetError::from("Create tcp socket failed!"));
-        };
-        let stream = match socket.connect(addr).await {
-            Ok(stream) => stream,
-            Err(e) => {
-                let err = format!("Connect to `{}` failed: {}", addr, e);
-                return Err(TcpTargetError::from(err));
-            }
-        };
-        let instance = ConnectionInstance::from(stream);
-        Client::process(instance).await;
-        Ok(())
-    }
-
-    /// Attempts to establish a connection to the TCP server.
-    ///
-    /// This function initiates a connection to the server address
-    /// specified in the target configuration.
-    pub async fn listen(&self) -> Result<(), TcpTargetError> {
-        let addr = self.get_addr();
-        let listener = match TcpListener::bind(addr).await {
-            Ok(listener) => listener,
-            Err(_) => {
-                let err = format!("Bind to `{}` failed", addr);
-                return Err(TcpTargetError::from(err));
-            }
-        };
-
-        let cfg: ServerTargetConfig = match self.get_server_cfg() {
-            Some(cfg) => *cfg,
-            None => ServerTargetConfig::default(),
-        };
-
-        if cfg.is_once() {
-            // Process once (Blocked)
-            let (stream, _) = match listener.accept().await {
-                Ok(result) => result,
-                Err(e) => {
-                    let err = format!("Accept connection failed: {}", e);
-                    return Err(TcpTargetError::from(err));
-                }
-            };
-            let instance = ConnectionInstance::from(stream);
-            Server::process(instance).await;
-        } else {
-            loop {
-                // Process multiple times (Concurrent)
-                let (stream, _) = match listener.accept().await {
-                    Ok(result) => result,
-                    Err(e) => {
-                        let err = format!("Accept connection failed: {}", e);
-                        return Err(TcpTargetError::from(err));
-                    }
-                };
-                let instance = ConnectionInstance::from(stream);
-                spawn(async move {
-                    Server::process(instance).await;
-                });
-            }
-        }
-        Ok(())
-    }
-}