find_header returns &str

src/http/mod.rs

@@ -177,11 +177,11 @@ impl Header {
         Header { fields }
     }
 
-    pub fn find_field(&self, field_name: &str) -> Option<String> {
+    pub fn find_field(&self, field_name: &str) -> Option<&str> {
         let field_name = field_name.to_lowercase();
         for field in &self.fields {
             if field.name.to_lowercase().eq(field_name.as_str()) {
-                return Some(field.value.clone());
+                return Some(field.value.as_str());
             }
         }
         return None;
@@ -196,7 +196,7 @@ impl Header {
 }
 
 impl Request {
-    pub fn find_header(&self, name: &str) -> Option<String> {
+    pub fn find_header(&self, name: &str) -> Option<&str> {
         self.header.find_field(name)
     }
 
@@ -223,7 +223,7 @@ impl Response {
         res
     }
 
-    pub fn find_header(&self, name: &str) -> Option<String> {
+    pub fn find_header(&self, name: &str) -> Option<&str> {
         self.header.find_field(name)
     }