diff --git a/src/request.rs b/src/request.rs
index a59f68f..4cf75de 100644
--- a/src/request.rs
+++ b/src/request.rs
@@ -4,6 +4,8 @@ pub mod titan;
 pub use gemini::Gemini;
 pub use titan::Titan;
 
+pub const HEADER_MAX_LEN: usize = 1024;
+
 use anyhow::{bail, Result};
 
 /// https://geminiprotocol.net/docs/protocol-specification.gmi#requests
@@ -30,3 +32,19 @@ impl<'a> Request<'a> {
         }
     }
 }
+
+pub fn header_bytes(buffer: &[u8]) -> Result<&[u8]> {
+    match buffer.iter().position(|&b| b == b'\r') {
+        Some(n) => {
+            if n > HEADER_MAX_LEN {
+                bail!("Header bytes length reached")
+            }
+            if buffer.get(n + 1).is_some_and(|&b| b == b'\n') {
+                Ok(&buffer[..n])
+            } else {
+                bail!("LF byte not found")
+            }
+        }
+        None => bail!("CR byte not found"),
+    }
+}
diff --git a/src/request/gemini.rs b/src/request/gemini.rs
index 4bc7c84..e9568e2 100644
--- a/src/request/gemini.rs
+++ b/src/request/gemini.rs
@@ -1,4 +1,4 @@
-use anyhow::{bail, Result};
+use anyhow::Result;
 
 /// [Gemini](https://geminiprotocol.net/docs/protocol-specification.gmi) request
 pub struct Gemini {
@@ -7,21 +7,9 @@ pub struct Gemini {
 
 impl Gemini {
     pub fn from_bytes(buffer: &[u8]) -> Result<Self> {
-        if buffer.len() > 1024 {
-            bail!("Header bytes length reached")
-        }
-        match buffer.iter().position(|&b| b == b'\r') {
-            Some(n) => {
-                if buffer.get(n + 1).is_some_and(|&b| b == b'\n') {
-                    Ok(Self {
-                        url: String::from_utf8(buffer[..n].to_vec())?,
-                    })
-                } else {
-                    bail!("LF byte not found")
-                }
-            }
-            None => bail!("CR byte not found"),
-        }
+        Ok(Self {
+            url: String::from_utf8(crate::request::header_bytes(buffer)?.to_vec())?,
+        })
     }
     pub fn into_bytes(self) -> Vec<u8> {
         let mut bytes = Vec::with_capacity(self.url.len() + 2);