diff --git a/ylong_http/src/h3/octets.rs b/ylong_http/src/h3/octets.rs
index 05f7c7c3b689ecc4ea82458ea636c33bf1b690cc..6595219dde29696d4cb3f23a32890a7596c228c5 100644
--- a/ylong_http/src/h3/octets.rs
+++ b/ylong_http/src/h3/octets.rs
@@ -284,18 +284,10 @@ impl<'a> WriteVarint<'a> {
 /// integer.
 pub const fn varint_len(v: u64) -> usize {
     match v {
-        0..=63 => {
-            1
-        }
-        64..=16383 => {
-            2
-        }
-        16384..=1_073_741_823 => {
-            4
-        }
-        1_073_741_824..=4_611_686_018_427_387_903 => {
-            8
-        }
+        0..=63 => 1,
+        64..=16383 => 2,
+        16384..=1_073_741_823 => 4,
+        1_073_741_824..=4_611_686_018_427_387_903 => 8,
         _ => {unreachable!()}
     }
 }
diff --git a/ylong_http_client/examples/async_http.rs b/ylong_http_client/examples/async_http.rs
index f2c415f2f48d52259c2271a2b8309a979c4a1d3a..7a1acf2dbb661303efa8d74b70699395daadcfcf 100644
--- a/ylong_http_client/examples/async_http.rs
+++ b/ylong_http_client/examples/async_http.rs
@@ -33,7 +33,7 @@ async fn client_send() -> Result<(), HttpClientError> {
 
     // Creates a `Request`.
     let request = Request::builder()
-        .url("https://sf3-cn.feishucdn.com/obj/ee-appcenter/47273f95/Feishu-win32_ia32-7.9.7-signed.exe")
+        .url("https://www.example.com")
         .body(Body::empty())?;
 
     // Sends request and receives a `Response`.
diff --git a/ylong_http_client/src/util/c_openssl/adapter.rs b/ylong_http_client/src/util/c_openssl/adapter.rs
index 06bc44302fff905f531f443691461829bdd7c610..b28f1165f2cdc0e7d4e9936b6f2b8ab4cfe9d1bc 100644
--- a/ylong_http_client/src/util/c_openssl/adapter.rs
+++ b/ylong_http_client/src/util/c_openssl/adapter.rs
@@ -395,7 +395,8 @@ impl TlsConfigBuilder {
     pub fn build(mut self) -> Result<TlsConfig, HttpClientError> {
         for cert in self.certs_list {
             self.inner = self.inner.and_then(|mut builder| {
-                { Ok(builder.cert_store_mut()).map(|store| store.add_cert(cert.0)) }
+                Ok(builder.cert_store_mut())
+                    .and_then(|store| store.add_cert(cert.0))
                     .map(|_| builder)
             });
         }
@@ -403,7 +404,9 @@ impl TlsConfigBuilder {
         #[cfg(feature = "c_openssl_3_0")]
         for path in self.paths_list {
             self.inner = self.inner.and_then(|mut builder| {
-                { Ok(builder.cert_store_mut()).map(|store| store.add_path(path)) }.map(|_| builder)
+                Ok(builder.cert_store_mut())
+                    .and_then(|store| store.add_path(path))
+                    .map(|_| builder)
             });
         }