diff --git a/src/utils/request.rs b/src/utils/http.rs
similarity index 73%
rename from src/utils/request.rs
rename to src/utils/http.rs
index e96d74b..f5f967a 100644
--- a/src/utils/request.rs
+++ b/src/utils/http.rs
@@ -1,12 +1,31 @@
+use crate::types::GeminiKey;
+use crate::{config::KeyCheckerConfig, error::ValidatorError};
 use backon::{ExponentialBuilder, Retryable};
 use reqwest::Client;
 use serde::Serialize;
-use tokio::time::Duration;
+use std::time::Duration;
+use tokio::time::Duration as TokioDuration;
 use tracing::debug;
 use url::Url;
 
-use crate::error::ValidatorError;
-use crate::types::GeminiKey;
+pub fn client_builder(config: &KeyCheckerConfig) -> Result<Client, ValidatorError> {
+    // Set the maximum number of connections per host based on concurrency.
+    let pool_size = config.concurrency / 2;
+
+    let mut builder = Client::builder()
+        .timeout(Duration::from_secs(config.timeout_sec))
+        .pool_max_idle_per_host(pool_size);
+
+    if let Some(ref proxy_url) = config.proxy {
+        builder = builder.proxy(reqwest::Proxy::all(proxy_url.clone())?);
+    }
+
+    if !config.enable_multiplexing {
+        builder = builder.http1_only();
+    }
+
+    Ok(builder.build()?)
+}
 
 pub async fn send_request<T>(
     client: Client,
@@ -20,8 +39,8 @@ where
 {
     let retry_policy = ExponentialBuilder::default()
         .with_max_times(max_retries)
-        .with_min_delay(Duration::from_secs(1))
-        .with_max_delay(Duration::from_secs(2));
+        .with_min_delay(TokioDuration::from_secs(1))
+        .with_max_delay(TokioDuration::from_secs(2));
 
     (async || {
         let response = client
diff --git a/src/utils/http_client.rs b/src/utils/http_client.rs
deleted file mode 100644
index 3fb86eb..0000000
--- a/src/utils/http_client.rs
+++ /dev/null
@@ -1,22 +0,0 @@
-use crate::{config::KeyCheckerConfig, error::ValidatorError};
-use reqwest::Client;
-use std::time::Duration;
-
-pub fn client_builder(config: &KeyCheckerConfig) -> Result<Client, ValidatorError> {
-    // Set the maximum number of connections per host based on concurrency.
-    let pool_size = config.concurrency / 2;
-
-    let mut builder = Client::builder()
-        .timeout(Duration::from_secs(config.timeout_sec))
-        .pool_max_idle_per_host(pool_size);
-
-    if let Some(ref proxy_url) = config.proxy {
-        builder = builder.proxy(reqwest::Proxy::all(proxy_url.clone())?);
-    }
-
-    if !config.enable_multiplexing {
-        builder = builder.http1_only();
-    }
-
-    Ok(builder.build()?)
-}
diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 53cd21a..7d723a4 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -1,5 +1,3 @@
-pub mod http_client;
-pub mod request;
+pub mod http;
 
-pub use http_client::client_builder;
-pub use request::send_request;
\ No newline at end of file
+pub use http::{client_builder, send_request};
diff --git a/src/validation/validation_service.rs b/src/validation/validation_service.rs
index 050a046..21b8eea 100644
--- a/src/validation/validation_service.rs
+++ b/src/validation/validation_service.rs
@@ -101,13 +101,10 @@ impl ValidationService {
 pub async fn start_validation() -> Result<(), ValidatorError> {
     let config = KeyCheckerConfig::load_config()?;
 
-    // 加载密钥
     let keys = load_keys_from_txt(config.input_path.as_path())?;
 
-    // 构建HTTP客户端
     let client = client_builder(&config)?;
 
-    // 创建验证服务并启动
     let validation_service = ValidationService::new(config, client);
     validation_service.validate_keys(keys).await
 }