feat: udpate fetch-rs

__network/fetch-rs/README.md

@@ -22,12 +22,12 @@ let response = fetch(
     "https://hatter.ink/util/print_request.action",
     &FetchOptions {
         method: FetchMethod::Post,
-        headers: Some(vec![
+        headers: vec![
             FetchHeader {
                 key: "content-type".to_string(),
                 value: "application/json".to_string(),
             }
-        ]),
+        ],
         body: Some("{}".as_bytes().to_vec()),
         ..Default::default()
     })?;

__network/fetch-rs/src/main.rs

@@ -28,12 +28,12 @@ fn main() -> XResult<()> {
         "https://hatter.ink/util/print_request.action",
         &FetchOptions {
             method: FetchMethod::Post,
-            headers: Some(vec![
+            headers: vec![
                 FetchHeader {
                     key: "content-type".to_string(),
                     value: "application/json".to_string(),
                 }
-            ]),
+            ],
             body: Some("{}".as_bytes().to_vec()),
             ..Default::default()
         })?;
@@ -83,7 +83,7 @@ pub struct FetchHeader {
 #[derive(Clone, Debug, Default)]
 pub struct FetchOptions {
     pub method: FetchMethod,
-    pub headers: Option<Vec<FetchHeader>>,
+    pub headers: Vec<FetchHeader>,
     pub body: Option<Vec<u8>>,
     // FIXME connect timeout or read timeout?
     pub timeout: Option<Duration>,
@@ -135,9 +135,9 @@ pub fn fetch(url: &str, option: &FetchOptions) -> XResult<FetchResponse> {
     if let Some(timeout) = &option.timeout {
         let _ = request.timeout_mut().insert(timeout.to_owned());
     }
-    if let Some(headers) = &option.headers {
+    if !option.headers.is_empty() {
         let headers_mut = request.headers_mut();
-        for header in headers {
+        for header in &option.headers {
             let header_name = HeaderName::from_str(&header.key)?;
             let header_value = HeaderValue::from_str(&header.value)?;
             headers_mut.insert(header_name, header_value);