diff --git a/Cargo.toml b/Cargo.toml
index 7498940..603d96f 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -67,10 +67,13 @@ tokio-websockets = { version = "0.8", features = [
     "client",
     "fastrand",
     "sha1_smol",
+    "rustls-webpki-roots",
 ] }
 bytes = "1.10.0"
 
 qrcode = { version = "0.14.1", default-features = false, features = [] }
+rustls-rustcrypto = "0.0.2-alpha"
+chrono = { version = "0.4.41", default-features = false, features = ["now", "pure-rust-locales", "clock"] }
 
 [build-dependencies]
 embuild = "0.33"
diff --git a/sdkconfig.defaults b/sdkconfig.defaults
index f6e4d34..5f43c98 100644
--- a/sdkconfig.defaults
+++ b/sdkconfig.defaults
@@ -1,5 +1,5 @@
 # Rust often needs a bit of an extra main task stack size compared to C (the default is 3K)
-CONFIG_ESP_MAIN_TASK_STACK_SIZE=30720
+CONFIG_ESP_MAIN_TASK_STACK_SIZE=65536
 
 # Use this to set FreeRTOS kernel tick frequency to 1000 Hz (100 Hz by default).
 # This allows to use 1 ms granularity for thread sleeps (10 ms by default).
diff --git a/src/main.rs b/src/main.rs
index 0e547e5..ea7d629 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -10,6 +10,7 @@ mod network;
 mod protocol;
 mod ui;
 mod ws;
+mod sntp;
 
 #[derive(Debug, Clone)]
 struct Setting {
@@ -184,6 +185,13 @@ fn main() -> anyhow::Result<()> {
     let wifi = _wifi.unwrap();
     log_heap();
 
+    let now_time = sntp::sync_time();
+    gui.state = "SNTP sync".to_string();
+    gui.text = format!("{}", now_time);
+    gui.display_flush().unwrap();
+
+    log_heap();
+
     let mac = wifi.ap_netif().get_mac().unwrap();
     let mac_str = format!(
         "{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}",
diff --git a/src/sntp.rs b/src/sntp.rs
new file mode 100644
index 0000000..13920de
--- /dev/null
+++ b/src/sntp.rs
@@ -0,0 +1,31 @@
+use chrono::{DateTime, FixedOffset, TimeZone, Utc};
+use esp_idf_svc::sntp::{EspSntp, SyncStatus::Completed};
+use std::{thread::sleep, time::Duration};
+
+pub fn sync_time() -> String {
+    log::info!("SNTP sync time");
+    show_now();
+    let ntp_client = EspSntp::new_default().unwrap();
+    loop {
+        let status = ntp_client.get_sync_status();
+        log::debug!("sntp sync status {:?}", status);
+        if status == Completed {
+            break;
+        }
+        sleep(Duration::from_secs(1));
+    }
+    log::info!("SNTP synchronized!");
+    show_now()
+}
+
+fn show_now() -> String {
+    let cst = FixedOffset::east_opt(8 * 3600).unwrap(); // 安全的偏移量创建
+
+    let utc_now = Utc::now();
+    let local_now: DateTime<FixedOffset> = cst.from_utc_datetime(&utc_now.naive_utc());
+    let now_str = local_now.format("%Y-%m-%dT%H:%M:%S%:z").to_string();
+
+    log::info!("now time: {}", now_str);
+
+    now_str.to_string()
+}
diff --git a/src/ws.rs b/src/ws.rs
index 1b6e0f8..6b13c27 100644
--- a/src/ws.rs
+++ b/src/ws.rs
@@ -7,24 +7,61 @@ fn print_stack_high() {
 
 use crate::{app::Event, protocol::ServerEvent};
 use futures_util::{SinkExt, StreamExt, TryFutureExt};
-use tokio_websockets::Message;
+use std::sync::Arc;
+use tokio::net::TcpStream;
+use tokio_websockets::{Connector, Message};
 
 pub struct Server {
-    pub uri: String,
     timeout: std::time::Duration,
     ws: tokio_websockets::WebSocketStream<tokio_websockets::MaybeTlsStream<tokio::net::TcpStream>>,
 }
 
 impl Server {
     pub async fn new(uri: String) -> anyhow::Result<Self> {
-        let (ws, _resp) = tokio_websockets::ClientBuilder::new()
+        log::info!("uri: {}", uri);
+
+        let (scheme, rest) = uri.split_once("://").unwrap();
+        let default_port = match scheme {
+            "wss" => 443,
+            _ => 80,
+        };
+
+        // 提取 host[:port] 部分
+        let host_port = rest.split('/').next().unwrap();
+        let (host, port) = if let Some((h, p)) = host_port.split_once(':') {
+            (h, p.parse::<u16>().unwrap_or(default_port))
+        } else {
+            (host_port, default_port)
+        };
+        log::info!("connecting to {}:{}", host, port);
+
+        log::info!("establish tcp connection");
+        let tcp_stream = TcpStream::connect(format!("{host}:{port}")).await?;
+        let stream = match scheme {
+            "ws" => Connector::Plain.wrap(host, tcp_stream).await?,
+            _ => {
+                log::info!("init tls provider");
+                let provider = Arc::new(rustls_rustcrypto::provider());
+                log::info!("init tls connector");
+                let connector = Connector::new_rustls_with_crypto_provider(provider)?;
+                log::info!("warp tls connection");
+                connector.wrap(host, tcp_stream).await?
+            }
+        };
+        let (ws, resp) = tokio_websockets::ClientBuilder::new()
             .uri(&uri)?
-            .connect()
+            .connect_on(stream)
             .await?;
 
+        log::info!(
+            "ws resp status: {:?}, headers: {:?} ",
+            resp.status(),
+            resp.headers()
+        );
+
         let timeout = std::time::Duration::from_secs(30);
 
-        Ok(Self { uri, timeout, ws })
+        Ok(Self { timeout, ws })
     }
 
     pub fn set_timeout(&mut self, timeout: std::time::Duration) {