diff --git a/crates/auth/src/webview.rs b/crates/auth/src/webview.rs
index 4b0c337..6d9def1 100644
--- a/crates/auth/src/webview.rs
+++ b/crates/auth/src/webview.rs
@@ -1,5 +1,5 @@
 mod auth_messenger;
-mod auth_response;
+mod response_reader;
 mod webview_auth;
 
 #[cfg_attr(not(target_os = "macos"), path = "webview/unix.rs")]
diff --git a/crates/auth/src/webview/macos.rs b/crates/auth/src/webview/macos.rs
index 43c4395..4c20762 100644
--- a/crates/auth/src/webview/macos.rs
+++ b/crates/auth/src/webview/macos.rs
@@ -8,32 +8,29 @@ use objc2::{
 use objc2_foundation::{NSError, NSHTTPURLResponse, NSString};
 use wry::WebViewExtMacOS;
 
-use super::{auth_messenger::AuthError, navigation_delegate::NavigationDelegate};
+use super::{auth_messenger::AuthError, navigation_delegate::NavigationDelegate, response_reader::ResponseReader};
 
 pub struct AuthResponse {
   response: Option<Retained<NSHTTPURLResponse>>,
   body: Option<String>,
 }
 
-impl AuthResponse {
-  pub fn url(&self) -> Option<String> {
+impl ResponseReader for AuthResponse {
+  fn url(&self) -> Option<String> {
     let response = self.response.as_ref()?;
     let url = unsafe { response.URL().and_then(|url| url.absoluteString()) };
 
     url.map(|u| u.to_string())
   }
 
-  pub fn get_header(&self, key: &str) -> Option<String> {
+  fn get_header(&self, key: &str) -> Option<String> {
     let response = self.response.as_ref()?;
     let value = unsafe { response.valueForHTTPHeaderField(&NSString::from_str(key)) };
 
     value.map(|v| v.to_string())
   }
 
-  pub fn get_body<F>(&self, cb: F)
-  where
-    F: FnOnce(anyhow::Result<Option<Cow<'_, str>>>) + 'static,
-  {
+  fn get_body(&self, cb: Box<dyn FnOnce(anyhow::Result<Option<Cow<'_, str>>>) + 'static>) {
     if let Some(body) = self.body.as_deref() {
       cb(Ok(Some(Cow::Borrowed(body))));
     } else {
@@ -84,7 +81,7 @@ where
   let proto_delegate = ProtocolObject::from_ref(delegate.as_ref());
   unsafe {
     wv.setNavigationDelegate(Some(proto_delegate));
-    // The UI will freeze if we don't call this method
+    // The UI will freeze if we don't call this method, but it's not clear why.
     let _ = wv.navigationDelegate();
   };
 }
diff --git a/crates/auth/src/webview/auth_response.rs b/crates/auth/src/webview/response_reader.rs
similarity index 82%
rename from crates/auth/src/webview/auth_response.rs
rename to crates/auth/src/webview/response_reader.rs
index 1b20aee..c8c111f 100644
--- a/crates/auth/src/webview/auth_response.rs
+++ b/crates/auth/src/webview/response_reader.rs
@@ -1,3 +1,5 @@
+use std::borrow::Cow;
+
 use gpapi::{
   auth::{AuthDataParseResult, SamlAuthData},
   error::AuthDataParseError,
@@ -7,17 +9,25 @@ use regex::Regex;
 
 use crate::webview::auth_messenger::AuthError;
 
-use super::{auth_messenger::AuthResult, platform_impl::AuthResponse};
+use super::auth_messenger::AuthResult;
 
-fn is_acs_endpoint(auth_response: &AuthResponse) -> bool {
+pub trait ResponseReader {
+  fn url(&self) -> Option<String>;
+
+  fn get_header(&self, key: &str) -> Option<String>;
+
+  fn get_body(&self, cb: Box<dyn FnOnce(anyhow::Result<Option<Cow<'_, str>>>) + 'static>);
+}
+
+fn is_acs_endpoint(auth_response: &impl ResponseReader) -> bool {
   auth_response.url().map_or(false, |url| url.ends_with("/SAML20/SP/ACS"))
 }
 
-pub fn read_auth_data<F>(auth_response: AuthResponse, cb: F)
+pub fn read_auth_data<F>(auth_response: &impl ResponseReader, cb: F)
 where
   F: Fn(AuthResult) + 'static,
 {
-  match read_from_headers(&auth_response) {
+  match read_from_headers(auth_response) {
     Ok(auth_data) => {
       info!("Found auth data in headers");
       cb(Ok(auth_data))
@@ -26,8 +36,8 @@ where
     Err(header_err) => {
       info!("Failed to read auth data from headers: {}", header_err);
 
-      let is_acs_endpoint = is_acs_endpoint(&auth_response);
-      read_from_body(&auth_response, move |auth_result| {
+      let is_acs_endpoint = is_acs_endpoint(auth_response);
+      read_from_body(auth_response, move |auth_result| {
         // If the endpoint is `/SAML20/SP/ACS` and no auth data found in body, it should be considered as invalid
         let auth_result = auth_result.map_err(move |e| {
           info!("Failed to read auth data from body: {}", e);
@@ -44,7 +54,7 @@ where
   }
 }
 
-fn read_from_headers(auth_response: &AuthResponse) -> AuthDataParseResult {
+fn read_from_headers(auth_response: &impl ResponseReader) -> AuthDataParseResult {
   let Some(status) = auth_response.get_header("saml-auth-status") else {
     info!("No SAML auth status found in headers");
     return Err(AuthDataParseError::NotFound);
@@ -65,11 +75,11 @@ fn read_from_headers(auth_response: &AuthResponse) -> AuthDataParseResult {
   })
 }
 
-fn read_from_body<F>(auth_response: &AuthResponse, cb: F)
+fn read_from_body<F>(auth_response: &impl ResponseReader, cb: F)
 where
   F: FnOnce(AuthDataParseResult) + 'static,
 {
-  auth_response.get_body(|body| match body {
+  auth_response.get_body(Box::new(|body| match body {
     Ok(body) => {
       if let Some(html) = body {
         cb(read_from_html(&html))
@@ -79,7 +89,7 @@ where
       info!("Failed to read body: {}", err);
       cb(Err(AuthDataParseError::Invalid))
     }
-  });
+  }));
 }
 
 fn read_from_html(html: &str) -> AuthDataParseResult {
diff --git a/crates/auth/src/webview/webview_auth.rs b/crates/auth/src/webview/webview_auth.rs
index a5e5fc2..bd1bca7 100644
--- a/crates/auth/src/webview/webview_auth.rs
+++ b/crates/auth/src/webview/webview_auth.rs
@@ -7,7 +7,7 @@ use tao::{
 };
 use wry::WebViewBuilder;
 
-use crate::{auth_prelogin, webview::auth_response::read_auth_data};
+use crate::{auth_prelogin, webview::response_reader::read_auth_data};
 
 use super::platform_impl::connect_webview_response;
 
@@ -98,7 +98,7 @@ impl<'a> WebviewAuthenticatorBuilder<'a> {
     connect_webview_response(&webview, |response| {
       // println!("Received response: {:?}", response.unwrap().url());
       match response {
-        Ok(response) => read_auth_data(response, |auth_result| {
+        Ok(response) => read_auth_data(&response, |auth_result| {
           println!("Auth result: {:?}", auth_result);
         }),
         Err(err) => todo!(),