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|
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(())
}
}
|
