Add basic codes

src/request.rs

@@ -0,0 +1,46 @@
+use std::str::FromStr;
+
+#[derive(Debug)]
+pub(crate) struct ReqLine {
+    pub(crate) method: String,
+    pub(crate) route: String,
+    pub(crate) version: String,
+}
+
+impl FromStr for ReqLine {
+    type Err = std::io::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let (method, rest) = s
+            .split_once(" ")
+            .ok_or(std::io::Error::other("Missing route"))?;
+        let (route, version) = rest
+            .split_once(" ")
+            .ok_or(std::io::Error::other("Missing version"))?;
+        Ok(Self {
+            method: method.trim().to_string(),
+            route: route.trim().to_string(),
+            version: version.trim().to_string(),
+        })
+    }
+}
+
+#[derive(Debug)]
+pub(crate) struct Header {
+    pub(crate) key: String,
+    pub(crate) value: String,
+}
+
+impl FromStr for Header {
+    type Err = std::io::Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let (key, value) = s
+            .split_once(":")
+            .ok_or(std::io::Error::other("Missing value"))?;
+        Ok(Self {
+            key: key.trim().to_string(),
+            value: value.trim().to_string(),
+        })
+    }
+}