Simple http server web

CMakeLists.txt

@@ -339,7 +339,11 @@ if(${PLATFORM} MATCHES "Web")
     
     set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${EM_FLAGS}")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${EM_FLAGS}")
-    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EM_FLAGS} --preload-file ${CMAKE_SOURCE_DIR}/data@/data")
+    set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} ${EM_FLAGS} --preload-file \"${CMAKE_SOURCE_DIR}/data@/data\"")
+    set_target_properties(${PROJECT_NAME} PROPERTIES RULE_LAUNCH_LINK "set EMCC_WASM_OPT=0 &&")
+    # Remove -g (DWARF) to prevent wasm-opt post-link optimizations from running
+    string(REPLACE "-g" "" CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO}")
+    string(REPLACE "-g" "" CMAKE_CXX_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
 
     target_compile_options(${PROJECT_NAME} PUBLIC
         "-Os"
@@ -355,7 +359,7 @@ if(${PLATFORM} MATCHES "Web")
         "-sFORCE_FILESYSTEM=1"
         "-sLEGACY_GL_EMULATION=1"
         "-sGL_UNSAFE_OPTS=0"
-        "-sEMULATE_FUNCTION_POINTER_CASTS=1"
+        "-sEMULATE_FUNCTION_POINTER_CASTS=0"
         "-sALLOW_TABLE_GROWTH=1"
         "-sEXPORTED_RUNTIME_METHODS=['FS','stringToUTF8','UTF8ToString','cwrap','ccall','HEAP8','HEAPU8','HEAP32','HEAPU32']"
         "-sEXPORTED_FUNCTIONS=['_main']"
@@ -404,6 +408,7 @@ else()
         TARGET ${PROJECT_NAME} 
         POST_BUILD
             COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_SOURCE_DIR}/misc/web/index.html" $<TARGET_FILE_DIR:${PROJECT_NAME}>
+            COMMAND ${CMAKE_COMMAND} -E copy "${CMAKE_SOURCE_DIR}/misc/web/coi-serviceworker.js" $<TARGET_FILE_DIR:${PROJECT_NAME}>
     )
 endif()
 

README.md

@@ -176,7 +176,7 @@ cmake --build .
 2. Configure and build project:
    ```
    mkdir build && cd build
-   cmake .. -B . -G Ninja "-DCMAKE_TOOLCHAIN_FILE=$EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
+   cmake .. -G Ninja -DCMAKE_TOOLCHAIN_FILE="$env:EMSDK/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake"
    cmake --build . --target MinecraftPE
    ```
    > [!Note]

misc/web/coi-serviceworker.js

@@ -0,0 +1,57 @@
+/* coi-serviceworker.js */
+
+if (typeof window === "undefined") {
+    // Código del Worker: Intercepta peticiones
+    self.addEventListener("install", () => self.skipWaiting());
+
+    self.addEventListener("activate", (event) =>
+        event.waitUntil(self.clients.claim())
+    );
+
+    self.addEventListener("fetch", (event) => {
+        if (event.request.method !== "GET") return;
+
+        event.respondWith(
+            fetch(event.request)
+                .then((response) => {
+                    if (response.status === 0) return response;
+
+                    const newHeaders = new Headers(response.headers);
+                    newHeaders.set("Cross-Origin-Embedder-Policy", "require-corp");
+                    newHeaders.set("Cross-Origin-Opener-Policy", "same-origin");
+                    newHeaders.set("Cross-Origin-Resource-Policy", "cross-origin");
+
+                    return new Response(response.body, {
+                        status: response.status,
+                        statusText: response.statusText,
+                        headers: newHeaders,
+                    });
+                })
+                .catch(() => fetch(event.request))
+        );
+    });
+} else {
+    // Código de la Ventana: Registra el worker y recarga
+    (function () {
+        if ("serviceWorker" in navigator) {
+            navigator.serviceWorker
+                .register(window.document.currentScript.src)
+                .then((registration) => {
+                    registration.addEventListener("updatefound", () => {
+                        // Si hay una actualización, recargamos
+                        location.reload();
+                    });
+
+                    if (registration.active && !navigator.serviceWorker.controller) {
+                        // Si el worker está activo pero no controla la página aún, recargamos
+                        location.reload();
+                    }
+                });
+        }
+
+        // Si ya estamos aislados, perfecto
+        if (window.crossOriginIsolated) {
+            console.log("Aislamiento de origen ACTIVADO");
+        }
+    })();
+}

misc/web/index.html

@@ -23,6 +23,8 @@
 
 <canvas id="canvas"></canvas>
 
+<script src="coi-serviceworker.js"></script>
+
 <script>
   var Module = {
     canvas: document.getElementById('canvas'),