fix(core): use postMessage IPC for remote URLs on macOS closes #7662

.changes/fix-ipc-remote-url-macos.md

@@ -0,0 +1,5 @@
+---
+"tauri": patch:bug
+---
+
+Fixes IPC failing to communicate for remote URLs on macOS.

core/tauri/scripts/ipc-protocol.js

@@ -10,11 +10,35 @@
 
   Object.defineProperty(window, '__TAURI_POST_MESSAGE__', {
     value: (message) => {
-      const { cmd, callback, error, payload, options } = message
+      const {
+        cmd,
+        callback,
+        error,
+        payload,
+        options
+      } = message
 
-      // use custom protocol for IPC if the flag is set to true, the command is the fetch data command or when not on Linux/Android
-      if (useCustomProtocol || cmd === fetchChannelDataCommand || (osName !== 'linux' && osName !== 'android')) {
-        const { contentType, data } = processIpcMessage(payload)
+      console.log(osName, location.protocol)
+
+      // use custom protocol for IPC if:
+      // - the flag is set to true or
+      // - the command is the fetch data command or
+      // - when not on Linux/Android
+      // AND
+      // - when not on macOS with an https URL
+      if (
+        (
+          useCustomProtocol ||
+          cmd === fetchChannelDataCommand ||
+          !(osName === 'linux' || osName === 'android')
+        ) &&
+        !(osName === 'macos' && location.protocol === 'https:')
+      ) {
+        console.log('process')
+        const {
+          contentType,
+          data
+        } = processIpcMessage(payload)
         fetch(window.__TAURI__.convertFileSrc(cmd, 'ipc'), {
           method: 'POST',
           body: data,
@@ -44,7 +68,15 @@
         })
       } else {
         // otherwise use the postMessage interface
-        const { data } = processIpcMessage({ cmd, callback, error, options, payload })
+        const {
+          data
+        } = processIpcMessage({
+          cmd,
+          callback,
+          error,
+          options,
+          payload
+        })
         window.ipc.postMessage(data)
       }
     }

core/tauri/src/ipc/mod.rs

@@ -21,7 +21,7 @@ use crate::{
 };
 
 pub(crate) mod channel;
-#[cfg(not(ipc_custom_protocol))]
+#[cfg(any(target_os = "macos", not(ipc_custom_protocol)))]
 pub(crate) mod format_callback;
 pub(crate) mod protocol;
 

core/tauri/src/ipc/protocol.rs

@@ -19,7 +19,7 @@ use super::{CallbackFn, InvokeBody, InvokeResponse};
 const TAURI_CALLBACK_HEADER_NAME: &str = "Tauri-Callback";
 const TAURI_ERROR_HEADER_NAME: &str = "Tauri-Error";
 
-#[cfg(not(ipc_custom_protocol))]
+#[cfg(any(target_os = "macos", not(ipc_custom_protocol)))]
 pub fn message_handler<R: Runtime>(
   manager: WindowManager<R>,
 ) -> crate::runtime::webview::WebviewIpcHandler<crate::EventLoopMessage, R> {
@@ -87,7 +87,7 @@ pub fn get<R: Runtime>(manager: WindowManager<R>, label: String) -> UriSchemePro
   })
 }
 
-#[cfg(not(ipc_custom_protocol))]
+#[cfg(any(target_os = "macos", not(ipc_custom_protocol)))]
 fn handle_ipc_message<R: Runtime>(message: String, manager: &WindowManager<R>, label: &str) {
   if let Some(window) = manager.get_window(label) {
     use serde::{Deserialize, Deserializer};

core/tauri/src/manager.rs

@@ -1188,7 +1188,8 @@ impl<R: Runtime> WindowManager<R> {
       #[allow(clippy::redundant_clone)]
       app_handle.clone(),
     )?;
-    #[cfg(not(ipc_custom_protocol))]
+
+    #[cfg(any(target_os = "macos", not(ipc_custom_protocol)))]
     {
       pending.ipc_handler = Some(crate::ipc::protocol::message_handler(self.clone()));
     }

core/tauri/src/window.rs

@@ -2099,7 +2099,8 @@ impl<R: Runtime> Window<R> {
       Arc::new(
         #[allow(unused_variables)]
         move |window: Window<R>, cmd, response, callback, error| {
-          #[cfg(not(ipc_custom_protocol))]
+          if (cfg!(target_os = "macos") && window.url().scheme() == "https")
+            || !cfg!(ipc_custom_protocol)
           {
             use crate::ipc::{
               format_callback::{