Switch remote deploy to vendored source builds

Move remote deployment to a vendored source bundle built on the target host via Docker so redeploys no longer require local cross-compilation or host Go installation.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/assethandler.go

@@ -0,0 +1,205 @@
+package assetserver
+
+import (
+	"bytes"
+	"embed"
+	"errors"
+	"fmt"
+	"io"
+	iofs "io/fs"
+	"net/http"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+
+	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
+)
+
+type Logger interface {
+	Debug(message string, args ...interface{})
+	Error(message string, args ...interface{})
+}
+
+//go:embed defaultindex.html
+var defaultHTML []byte
+
+const (
+	indexHTML = "index.html"
+)
+
+type assetHandler struct {
+	fs      iofs.FS
+	handler http.Handler
+
+	logger Logger
+
+	retryMissingFiles bool
+}
+
+func NewAssetHandler(options assetserver.Options, log Logger) (http.Handler, error) {
+	vfs := options.Assets
+	if vfs != nil {
+		if _, err := vfs.Open("."); err != nil {
+			return nil, err
+		}
+
+		subDir, err := FindPathToFile(vfs, indexHTML)
+		if err != nil {
+			if errors.Is(err, os.ErrNotExist) {
+				msg := "no `index.html` could be found in your Assets fs.FS"
+				if embedFs, isEmbedFs := vfs.(embed.FS); isEmbedFs {
+					rootFolder, _ := FindEmbedRootPath(embedFs)
+					msg += fmt.Sprintf(", please make sure the embedded directory '%s' is correct and contains your assets", rootFolder)
+				}
+
+				return nil, fmt.Errorf(msg)
+			}
+
+			return nil, err
+		}
+
+		vfs, err = iofs.Sub(vfs, path.Clean(subDir))
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	var result http.Handler = &assetHandler{
+		fs:      vfs,
+		handler: options.Handler,
+		logger:  log,
+	}
+
+	if middleware := options.Middleware; middleware != nil {
+		result = middleware(result)
+	}
+
+	return result, nil
+}
+
+func (d *assetHandler) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	url := req.URL.Path
+	handler := d.handler
+	if strings.EqualFold(req.Method, http.MethodGet) {
+		filename := path.Clean(strings.TrimPrefix(url, "/"))
+
+		d.logDebug("Handling request '%s' (file='%s')", url, filename)
+		if err := d.serveFSFile(rw, req, filename); err != nil {
+			if os.IsNotExist(err) {
+				if handler != nil {
+					d.logDebug("File '%s' not found, serving '%s' by AssetHandler", filename, url)
+					handler.ServeHTTP(rw, req)
+					err = nil
+				} else {
+					rw.WriteHeader(http.StatusNotFound)
+					err = nil
+				}
+			}
+
+			if err != nil {
+				d.logError("Unable to handle request '%s': %s", url, err)
+				http.Error(rw, err.Error(), http.StatusInternalServerError)
+			}
+		}
+	} else if handler != nil {
+		d.logDebug("No GET request, serving '%s' by AssetHandler", url)
+		handler.ServeHTTP(rw, req)
+	} else {
+		rw.WriteHeader(http.StatusMethodNotAllowed)
+	}
+}
+
+// serveFSFile will try to load the file from the fs.FS and write it to the response
+func (d *assetHandler) serveFSFile(rw http.ResponseWriter, req *http.Request, filename string) error {
+	if d.fs == nil {
+		return os.ErrNotExist
+	}
+
+	file, err := d.fs.Open(filename)
+	if err != nil {
+		return err
+	}
+	defer file.Close()
+
+	statInfo, err := file.Stat()
+	if err != nil {
+		return err
+	}
+
+	url := req.URL.Path
+	isDirectoryPath := url == "" || url[len(url)-1] == '/'
+	if statInfo.IsDir() {
+		if !isDirectoryPath {
+			// If the URL doesn't end in a slash normally a http.redirect should be done, but that currently doesn't work on
+			// WebKit WebViews (macOS/Linux).
+			// So we handle this as a specific error
+			return fmt.Errorf("a directory has been requested without a trailing slash, please add a trailing slash to your request")
+		}
+
+		filename = path.Join(filename, indexHTML)
+
+		file, err = d.fs.Open(filename)
+		if err != nil {
+			return err
+		}
+		defer file.Close()
+
+		statInfo, err = file.Stat()
+		if err != nil {
+			return err
+		}
+	} else if isDirectoryPath {
+		return fmt.Errorf("a file has been requested with a trailing slash, please remove the trailing slash from your request")
+	}
+
+	var buf [512]byte
+	var n int
+	if _, haveType := rw.Header()[HeaderContentType]; !haveType {
+		// Detect MimeType by sniffing the first 512 bytes
+		n, err = file.Read(buf[:])
+		if err != nil && err != io.EOF {
+			return err
+		}
+
+		// Do the custom MimeType sniffing even though http.ServeContent would do it in case
+		// of an io.ReadSeeker. We would like to have a consistent behaviour in both cases.
+		if contentType := GetMimetype(filename, buf[:n]); contentType != "" {
+			rw.Header().Set(HeaderContentType, contentType)
+		}
+	}
+
+	if fileSeeker, _ := file.(io.ReadSeeker); fileSeeker != nil {
+		if _, err := fileSeeker.Seek(0, io.SeekStart); err != nil {
+			return fmt.Errorf("seeker can't seek")
+		}
+
+		http.ServeContent(rw, req, statInfo.Name(), statInfo.ModTime(), fileSeeker)
+		return nil
+	}
+
+	size := strconv.FormatInt(statInfo.Size(), 10)
+	rw.Header().Set(HeaderContentLength, size)
+
+	// Write the first 512 bytes used for MimeType sniffing
+	_, err = io.Copy(rw, bytes.NewReader(buf[:n]))
+	if err != nil {
+		return err
+	}
+
+	// Copy the remaining content of the file
+	_, err = io.Copy(rw, file)
+	return err
+}
+
+func (d *assetHandler) logDebug(message string, args ...interface{}) {
+	if d.logger != nil {
+		d.logger.Debug("[AssetHandler] "+message, args...)
+	}
+}
+
+func (d *assetHandler) logError(message string, args ...interface{}) {
+	if d.logger != nil {
+		d.logger.Error("[AssetHandler] "+message, args...)
+	}
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/assethandler_external.go

@@ -0,0 +1,84 @@
+package assetserver
+
+import (
+	"errors"
+	"fmt"
+	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+)
+
+func NewProxyServer(proxyURL string) http.Handler {
+	parsedURL, err := url.Parse(proxyURL)
+	if err != nil {
+		panic(err)
+	}
+	return httputil.NewSingleHostReverseProxy(parsedURL)
+}
+
+func NewExternalAssetsHandler(logger Logger, options assetserver.Options, url *url.URL) http.Handler {
+	baseHandler := options.Handler
+
+	errSkipProxy := fmt.Errorf("skip proxying")
+
+	proxy := httputil.NewSingleHostReverseProxy(url)
+	baseDirector := proxy.Director
+	proxy.Director = func(r *http.Request) {
+		baseDirector(r)
+		if logger != nil {
+			logger.Debug("[ExternalAssetHandler] Loading '%s'", r.URL)
+		}
+	}
+
+	proxy.ModifyResponse = func(res *http.Response) error {
+		if baseHandler == nil {
+			return nil
+		}
+
+		if res.StatusCode == http.StatusSwitchingProtocols {
+			return nil
+		}
+
+		if res.StatusCode == http.StatusNotFound || res.StatusCode == http.StatusMethodNotAllowed {
+			return errSkipProxy
+		}
+
+		return nil
+	}
+
+	proxy.ErrorHandler = func(rw http.ResponseWriter, r *http.Request, err error) {
+		if baseHandler != nil && errors.Is(err, errSkipProxy) {
+			if logger != nil {
+				logger.Debug("[ExternalAssetHandler] '%s' returned not found, using AssetHandler", r.URL)
+			}
+			baseHandler.ServeHTTP(rw, r)
+		} else {
+			if logger != nil {
+				logger.Error("[ExternalAssetHandler] Proxy error: %v", err)
+			}
+			rw.WriteHeader(http.StatusBadGateway)
+		}
+	}
+
+	var result http.Handler = http.HandlerFunc(
+		func(rw http.ResponseWriter, req *http.Request) {
+			if req.Method == http.MethodGet {
+				proxy.ServeHTTP(rw, req)
+				return
+			}
+
+			if baseHandler != nil {
+				baseHandler.ServeHTTP(rw, req)
+				return
+			}
+
+			rw.WriteHeader(http.StatusMethodNotAllowed)
+		})
+
+	if middleware := options.Middleware; middleware != nil {
+		result = middleware(result)
+	}
+
+	return result
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/assetserver.go

@@ -0,0 +1,255 @@
+package assetserver
+
+import (
+	"bytes"
+	"fmt"
+	"math/rand"
+	"net/http"
+	"strings"
+
+	"golang.org/x/net/html"
+	"html/template"
+
+	"github.com/wailsapp/wails/v2/pkg/options"
+	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
+)
+
+const (
+	runtimeJSPath = "/wails/runtime.js"
+	ipcJSPath     = "/wails/ipc.js"
+	runtimePath   = "/wails/runtime"
+)
+
+type RuntimeAssets interface {
+	DesktopIPC() []byte
+	WebsocketIPC() []byte
+	RuntimeDesktopJS() []byte
+}
+
+type RuntimeHandler interface {
+	HandleRuntimeCall(w http.ResponseWriter, r *http.Request)
+}
+
+type AssetServer struct {
+	handler   http.Handler
+	runtimeJS []byte
+	ipcJS     func(*http.Request) []byte
+
+	logger  Logger
+	runtime RuntimeAssets
+
+	servingFromDisk     bool
+	appendSpinnerToBody bool
+
+	// Use http based runtime
+	runtimeHandler RuntimeHandler
+
+	// plugin scripts
+	pluginScripts map[string]string
+
+	assetServerWebView
+}
+
+func NewAssetServerMainPage(bindingsJSON string, options *options.App, servingFromDisk bool, logger Logger, runtime RuntimeAssets) (*AssetServer, error) {
+	assetOptions, err := BuildAssetServerConfig(options)
+	if err != nil {
+		return nil, err
+	}
+	return NewAssetServer(bindingsJSON, assetOptions, servingFromDisk, logger, runtime)
+}
+
+func NewAssetServer(bindingsJSON string, options assetserver.Options, servingFromDisk bool, logger Logger, runtime RuntimeAssets) (*AssetServer, error) {
+	handler, err := NewAssetHandler(options, logger)
+	if err != nil {
+		return nil, err
+	}
+
+	return NewAssetServerWithHandler(handler, bindingsJSON, servingFromDisk, logger, runtime)
+}
+
+func NewAssetServerWithHandler(handler http.Handler, bindingsJSON string, servingFromDisk bool, logger Logger, runtime RuntimeAssets) (*AssetServer, error) {
+
+	var buffer bytes.Buffer
+	if bindingsJSON != "" {
+		escapedBindingsJSON := template.JSEscapeString(bindingsJSON)
+		buffer.WriteString(`window.wailsbindings='` + escapedBindingsJSON + `';` + "\n")
+	}
+	buffer.Write(runtime.RuntimeDesktopJS())
+
+	result := &AssetServer{
+		handler:   handler,
+		runtimeJS: buffer.Bytes(),
+
+		// Check if we have been given a directory to serve assets from.
+		// If so, this means we are in dev mode and are serving assets off disk.
+		// We indicate this through the `servingFromDisk` flag to ensure requests
+		// aren't cached in dev mode.
+		servingFromDisk: servingFromDisk,
+		logger:          logger,
+		runtime:         runtime,
+	}
+
+	return result, nil
+}
+
+func (d *AssetServer) UseRuntimeHandler(handler RuntimeHandler) {
+	d.runtimeHandler = handler
+}
+
+func (d *AssetServer) AddPluginScript(pluginName string, script string) {
+	if d.pluginScripts == nil {
+		d.pluginScripts = make(map[string]string)
+	}
+	pluginName = strings.ReplaceAll(pluginName, "/", "_")
+	pluginName = html.EscapeString(pluginName)
+	pluginScriptName := fmt.Sprintf("/plugin_%s_%d.js", pluginName, rand.Intn(100000))
+	d.pluginScripts[pluginScriptName] = script
+}
+
+func (d *AssetServer) ServeHTTP(rw http.ResponseWriter, req *http.Request) {
+	if isWebSocket(req) {
+		// WebSockets are not supported by the AssetServer
+		rw.WriteHeader(http.StatusNotImplemented)
+		return
+	}
+
+	if d.servingFromDisk {
+		rw.Header().Add(HeaderCacheControl, "no-cache")
+	}
+
+	handler := d.handler
+	if req.Method != http.MethodGet {
+		handler.ServeHTTP(rw, req)
+		return
+	}
+
+	path := req.URL.Path
+	if path == runtimeJSPath {
+		d.writeBlob(rw, path, d.runtimeJS)
+	} else if path == runtimePath && d.runtimeHandler != nil {
+		d.runtimeHandler.HandleRuntimeCall(rw, req)
+	} else if path == ipcJSPath {
+		content := d.runtime.DesktopIPC()
+		if d.ipcJS != nil {
+			content = d.ipcJS(req)
+		}
+		d.writeBlob(rw, path, content)
+
+	} else if script, ok := d.pluginScripts[path]; ok {
+		d.writeBlob(rw, path, []byte(script))
+	} else if d.isRuntimeInjectionMatch(path) {
+		recorder := &bodyRecorder{
+			ResponseWriter: rw,
+			doRecord: func(code int, h http.Header) bool {
+				if code == http.StatusNotFound {
+					return true
+				}
+
+				if code != http.StatusOK {
+					return false
+				}
+
+				return strings.Contains(h.Get(HeaderContentType), "text/html")
+			},
+		}
+
+		handler.ServeHTTP(recorder, req)
+
+		body := recorder.Body()
+		if body == nil {
+			// The body has been streamed and not recorded, we are finished
+			return
+		}
+
+		code := recorder.Code()
+		switch code {
+		case http.StatusOK:
+			content, err := d.processIndexHTML(body.Bytes())
+			if err != nil {
+				d.serveError(rw, err, "Unable to processIndexHTML")
+				return
+			}
+			d.writeBlob(rw, indexHTML, content)
+
+		case http.StatusNotFound:
+			d.writeBlob(rw, indexHTML, defaultHTML)
+
+		default:
+			rw.WriteHeader(code)
+
+		}
+
+	} else {
+		handler.ServeHTTP(rw, req)
+	}
+}
+
+func (d *AssetServer) processIndexHTML(indexHTML []byte) ([]byte, error) {
+	htmlNode, err := getHTMLNode(indexHTML)
+	if err != nil {
+		return nil, err
+	}
+
+	if d.appendSpinnerToBody {
+		err = appendSpinnerToBody(htmlNode)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if err := insertScriptInHead(htmlNode, runtimeJSPath); err != nil {
+		return nil, err
+	}
+
+	if err := insertScriptInHead(htmlNode, ipcJSPath); err != nil {
+		return nil, err
+	}
+
+	// Inject plugins
+	for scriptName := range d.pluginScripts {
+		if err := insertScriptInHead(htmlNode, scriptName); err != nil {
+			return nil, err
+		}
+	}
+
+	var buffer bytes.Buffer
+	err = html.Render(&buffer, htmlNode)
+	if err != nil {
+		return nil, err
+	}
+	return buffer.Bytes(), nil
+}
+
+func (d *AssetServer) writeBlob(rw http.ResponseWriter, filename string, blob []byte) {
+	err := serveFile(rw, filename, blob)
+	if err != nil {
+		d.serveError(rw, err, "Unable to write content %s", filename)
+	}
+}
+
+func (d *AssetServer) serveError(rw http.ResponseWriter, err error, msg string, args ...interface{}) {
+	args = append(args, err)
+	d.logError(msg+": %s", args...)
+	rw.WriteHeader(http.StatusInternalServerError)
+}
+
+func (d *AssetServer) logDebug(message string, args ...interface{}) {
+	if d.logger != nil {
+		d.logger.Debug("[AssetServer] "+message, args...)
+	}
+}
+
+func (d *AssetServer) logError(message string, args ...interface{}) {
+	if d.logger != nil {
+		d.logger.Error("[AssetServer] "+message, args...)
+	}
+}
+
+func (AssetServer) isRuntimeInjectionMatch(path string) bool {
+	if path == "" {
+		path = "/"
+	}
+
+	return strings.HasSuffix(path, "/") ||
+		strings.HasSuffix(path, "/"+indexHTML)
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/assetserver_dev.go

@@ -0,0 +1,31 @@
+//go:build dev
+// +build dev
+
+package assetserver
+
+import (
+	"net/http"
+	"strings"
+)
+
+/*
+The assetserver for the dev mode.
+Depending on the UserAgent it injects a websocket based IPC script into `index.html` or the default desktop IPC. The
+default desktop IPC is injected when the webview accesses the devserver.
+*/
+func NewDevAssetServer(handler http.Handler, bindingsJSON string, servingFromDisk bool, logger Logger, runtime RuntimeAssets) (*AssetServer, error) {
+	result, err := NewAssetServerWithHandler(handler, bindingsJSON, servingFromDisk, logger, runtime)
+	if err != nil {
+		return nil, err
+	}
+
+	result.appendSpinnerToBody = true
+	result.ipcJS = func(req *http.Request) []byte {
+		if strings.Contains(req.UserAgent(), WailsUserAgentValue) {
+			return runtime.DesktopIPC()
+		}
+		return runtime.WebsocketIPC()
+	}
+
+	return result, nil
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/assetserver_webview.go

@@ -0,0 +1,185 @@
+package assetserver
+
+import (
+	"fmt"
+	"net/http"
+	"net/url"
+	"strconv"
+	"strings"
+	"sync"
+
+	"github.com/wailsapp/wails/v2/pkg/assetserver/webview"
+)
+
+type assetServerWebView struct {
+	// ExpectedWebViewHost is checked against the Request Host of every WebViewRequest, other hosts won't be processed.
+	ExpectedWebViewHost string
+
+	dispatchInit    sync.Once
+	dispatchReqC    chan<- webview.Request
+	dispatchWorkers int
+}
+
+// ServeWebViewRequest processes the HTTP Request asynchronously by faking a golang HTTP Server.
+// The request will be finished with a StatusNotImplemented code if no handler has written to the response.
+// The AssetServer takes ownership of the request and the caller mustn't close it or access it in any other way.
+func (d *AssetServer) ServeWebViewRequest(req webview.Request) {
+	d.dispatchInit.Do(func() {
+		workers := d.dispatchWorkers
+		if workers <= 0 {
+			return
+		}
+
+		workerC := make(chan webview.Request, workers*2)
+		for i := 0; i < workers; i++ {
+			go func() {
+				for req := range workerC {
+					d.processWebViewRequest(req)
+				}
+			}()
+		}
+
+		dispatchC := make(chan webview.Request)
+		go queueingDispatcher(50, dispatchC, workerC)
+
+		d.dispatchReqC = dispatchC
+	})
+
+	if d.dispatchReqC == nil {
+		go d.processWebViewRequest(req)
+	} else {
+		d.dispatchReqC <- req
+	}
+}
+
+func (d *AssetServer) processWebViewRequest(r webview.Request) {
+	uri, _ := r.URL()
+	d.processWebViewRequestInternal(r)
+	if err := r.Close(); err != nil {
+		d.logError("Unable to call close for request for uri '%s'", uri)
+	}
+}
+
+// processWebViewRequestInternal processes the HTTP Request by faking a golang HTTP Server.
+// The request will be finished with a StatusNotImplemented code if no handler has written to the response.
+func (d *AssetServer) processWebViewRequestInternal(r webview.Request) {
+	uri := "unknown"
+	var err error
+
+	wrw := r.Response()
+	defer func() {
+		if err := wrw.Finish(); err != nil {
+			d.logError("Error finishing request '%s': %s", uri, err)
+		}
+	}()
+
+	var rw http.ResponseWriter = &contentTypeSniffer{rw: wrw} // Make sure we have a Content-Type sniffer
+	defer rw.WriteHeader(http.StatusNotImplemented)           // This is a NOP when a handler has already written and set the status
+
+	uri, err = r.URL()
+	if err != nil {
+		d.logError("Error processing request, unable to get URL: %s (HttpResponse=500)", err)
+		http.Error(rw, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	method, err := r.Method()
+	if err != nil {
+		d.webviewRequestErrorHandler(uri, rw, fmt.Errorf("HTTP-Method: %w", err))
+		return
+	}
+
+	header, err := r.Header()
+	if err != nil {
+		d.webviewRequestErrorHandler(uri, rw, fmt.Errorf("HTTP-Header: %w", err))
+		return
+	}
+
+	body, err := r.Body()
+	if err != nil {
+		d.webviewRequestErrorHandler(uri, rw, fmt.Errorf("HTTP-Body: %w", err))
+		return
+	}
+
+	if body == nil {
+		body = http.NoBody
+	}
+	defer body.Close()
+
+	req, err := http.NewRequest(method, uri, body)
+	if err != nil {
+		d.webviewRequestErrorHandler(uri, rw, fmt.Errorf("HTTP-Request: %w", err))
+		return
+	}
+
+	// For server requests, the URL is parsed from the URI supplied on the Request-Line as stored in RequestURI. For
+	// most requests, fields other than Path and RawQuery will be empty. (See RFC 7230, Section 5.3)
+	req.URL.Scheme = ""
+	req.URL.Host = ""
+	req.URL.Fragment = ""
+	req.URL.RawFragment = ""
+
+	if url := req.URL; req.RequestURI == "" && url != nil {
+		req.RequestURI = url.String()
+	}
+
+	req.Header = header
+
+	if req.RemoteAddr == "" {
+		// 192.0.2.0/24 is "TEST-NET" in RFC 5737
+		req.RemoteAddr = "192.0.2.1:1234"
+	}
+
+	if req.ContentLength == 0 {
+		req.ContentLength = -1
+	} else {
+		size := strconv.FormatInt(req.ContentLength, 10)
+		req.Header.Set(HeaderContentLength, size)
+	}
+
+	if host := req.Header.Get(HeaderHost); host != "" {
+		req.Host = host
+	}
+
+	if expectedHost := d.ExpectedWebViewHost; expectedHost != "" && expectedHost != req.Host {
+		d.webviewRequestErrorHandler(uri, rw, fmt.Errorf("expected host '%s' in request, but was '%s'", expectedHost, req.Host))
+		return
+	}
+
+	d.ServeHTTP(rw, req)
+}
+
+func (d *AssetServer) webviewRequestErrorHandler(uri string, rw http.ResponseWriter, err error) {
+	logInfo := uri
+	if uri, err := url.ParseRequestURI(uri); err == nil {
+		logInfo = strings.Replace(logInfo, fmt.Sprintf("%s://%s", uri.Scheme, uri.Host), "", 1)
+	}
+
+	d.logError("Error processing request '%s': %s (HttpResponse=500)", logInfo, err)
+	http.Error(rw, err.Error(), http.StatusInternalServerError)
+}
+
+func queueingDispatcher[T any](minQueueSize uint, inC <-chan T, outC chan<- T) {
+	q := newRingqueue[T](minQueueSize)
+	for {
+		in, ok := <-inC
+		if !ok {
+			return
+		}
+
+		q.Add(in)
+		for q.Len() != 0 {
+			out, _ := q.Peek()
+			select {
+			case outC <- out:
+				q.Remove()
+			case in, ok := <-inC:
+				if !ok {
+					return
+				}
+
+				q.Add(in)
+			}
+		}
+	}
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/body_recorder.go

@@ -0,0 +1,61 @@
+package assetserver
+
+import (
+	"bytes"
+	"net/http"
+)
+
+type bodyRecorder struct {
+	http.ResponseWriter
+	doRecord func(code int, header http.Header) bool
+
+	body        *bytes.Buffer
+	code        int
+	wroteHeader bool
+}
+
+func (rw *bodyRecorder) Write(buf []byte) (int, error) {
+	rw.writeHeader(buf, http.StatusOK)
+	if rw.body != nil {
+		return rw.body.Write(buf)
+	}
+	return rw.ResponseWriter.Write(buf)
+}
+
+func (rw *bodyRecorder) WriteHeader(code int) {
+	rw.writeHeader(nil, code)
+}
+
+func (rw *bodyRecorder) Code() int {
+	return rw.code
+}
+
+func (rw *bodyRecorder) Body() *bytes.Buffer {
+	return rw.body
+}
+
+func (rw *bodyRecorder) writeHeader(buf []byte, code int) {
+	if rw.wroteHeader {
+		return
+	}
+
+	if rw.doRecord != nil {
+		header := rw.Header()
+		if len(buf) != 0 {
+			if _, hasType := header[HeaderContentType]; !hasType {
+				header.Set(HeaderContentType, http.DetectContentType(buf))
+			}
+		}
+
+		if rw.doRecord(code, header) {
+			rw.body = bytes.NewBuffer(nil)
+		}
+	}
+
+	if rw.body == nil {
+		rw.ResponseWriter.WriteHeader(code)
+	}
+
+	rw.code = code
+	rw.wroteHeader = true
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/common.go

@@ -0,0 +1,135 @@
+package assetserver
+
+import (
+	"bytes"
+	"errors"
+	"io"
+	"net/http"
+	"strconv"
+	"strings"
+
+	"github.com/wailsapp/wails/v2/pkg/options"
+	"github.com/wailsapp/wails/v2/pkg/options/assetserver"
+	"golang.org/x/net/html"
+)
+
+func BuildAssetServerConfig(appOptions *options.App) (assetserver.Options, error) {
+	var options assetserver.Options
+	if opt := appOptions.AssetServer; opt != nil {
+		if appOptions.Assets != nil || appOptions.AssetsHandler != nil {
+			panic("It's not possible to use the deprecated Assets and AssetsHandler options and the new AssetServer option at the same time. Please migrate all your Assets options to the AssetServer option.")
+		}
+
+		options = *opt
+	} else {
+		options = assetserver.Options{
+			Assets:  appOptions.Assets,
+			Handler: appOptions.AssetsHandler,
+		}
+	}
+
+	return options, options.Validate()
+}
+
+const (
+	HeaderHost          = "Host"
+	HeaderContentType   = "Content-Type"
+	HeaderContentLength = "Content-Length"
+	HeaderUserAgent     = "User-Agent"
+	HeaderCacheControl  = "Cache-Control"
+	HeaderUpgrade       = "Upgrade"
+
+	WailsUserAgentValue = "wails.io"
+)
+
+func serveFile(rw http.ResponseWriter, filename string, blob []byte) error {
+	header := rw.Header()
+	header.Set(HeaderContentLength, strconv.Itoa(len(blob)))
+	if mimeType := header.Get(HeaderContentType); mimeType == "" {
+		mimeType = GetMimetype(filename, blob)
+		header.Set(HeaderContentType, mimeType)
+	}
+
+	rw.WriteHeader(http.StatusOK)
+	_, err := io.Copy(rw, bytes.NewReader(blob))
+	return err
+}
+
+func createScriptNode(scriptName string) *html.Node {
+	return &html.Node{
+		Type: html.ElementNode,
+		Data: "script",
+		Attr: []html.Attribute{
+			{
+				Key: "src",
+				Val: scriptName,
+			},
+		},
+	}
+}
+
+func createDivNode(id string) *html.Node {
+	return &html.Node{
+		Type: html.ElementNode,
+		Data: "div",
+		Attr: []html.Attribute{
+			{
+				Namespace: "",
+				Key:       "id",
+				Val:       id,
+			},
+		},
+	}
+}
+
+func insertScriptInHead(htmlNode *html.Node, scriptName string) error {
+	headNode := findFirstTag(htmlNode, "head")
+	if headNode == nil {
+		return errors.New("cannot find head in HTML")
+	}
+	scriptNode := createScriptNode(scriptName)
+	if headNode.FirstChild != nil {
+		headNode.InsertBefore(scriptNode, headNode.FirstChild)
+	} else {
+		headNode.AppendChild(scriptNode)
+	}
+	return nil
+}
+
+func appendSpinnerToBody(htmlNode *html.Node) error {
+	bodyNode := findFirstTag(htmlNode, "body")
+	if bodyNode == nil {
+		return errors.New("cannot find body in HTML")
+	}
+	scriptNode := createDivNode("wails-spinner")
+	bodyNode.AppendChild(scriptNode)
+	return nil
+}
+
+func getHTMLNode(htmldata []byte) (*html.Node, error) {
+	return html.Parse(bytes.NewReader(htmldata))
+}
+
+func findFirstTag(htmlnode *html.Node, tagName string) *html.Node {
+	var extractor func(*html.Node) *html.Node
+	var result *html.Node
+	extractor = func(node *html.Node) *html.Node {
+		if node.Type == html.ElementNode && node.Data == tagName {
+			return node
+		}
+		for child := node.FirstChild; child != nil; child = child.NextSibling {
+			result := extractor(child)
+			if result != nil {
+				return result
+			}
+		}
+		return nil
+	}
+	result = extractor(htmlnode)
+	return result
+}
+
+func isWebSocket(req *http.Request) bool {
+	upgrade := req.Header.Get(HeaderUpgrade)
+	return strings.EqualFold(upgrade, "websocket")
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/content_type_sniffer.go

@@ -0,0 +1,42 @@
+package assetserver
+
+import (
+	"net/http"
+)
+
+type contentTypeSniffer struct {
+	rw http.ResponseWriter
+
+	wroteHeader bool
+}
+
+func (rw *contentTypeSniffer) Header() http.Header {
+	return rw.rw.Header()
+}
+
+func (rw *contentTypeSniffer) Write(buf []byte) (int, error) {
+	rw.writeHeader(buf)
+	return rw.rw.Write(buf)
+}
+
+func (rw *contentTypeSniffer) WriteHeader(code int) {
+	if rw.wroteHeader {
+		return
+	}
+
+	rw.rw.WriteHeader(code)
+	rw.wroteHeader = true
+}
+
+func (rw *contentTypeSniffer) writeHeader(b []byte) {
+	if rw.wroteHeader {
+		return
+	}
+
+	m := rw.rw.Header()
+	if _, hasType := m[HeaderContentType]; !hasType {
+		m.Set(HeaderContentType, http.DetectContentType(b))
+	}
+
+	rw.WriteHeader(http.StatusOK)
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/fs.go

@@ -0,0 +1,75 @@
+package assetserver
+
+import (
+	"embed"
+	"fmt"
+	"io/fs"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+// FindEmbedRootPath finds the root path in the embed FS. It's the directory which contains all the files.
+func FindEmbedRootPath(fsys embed.FS) (string, error) {
+	stopErr := fmt.Errorf("files or multiple dirs found")
+
+	fPath := ""
+	err := fs.WalkDir(fsys, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+
+		if d.IsDir() {
+			fPath = path
+			if entries, dErr := fs.ReadDir(fsys, path); dErr != nil {
+				return dErr
+			} else if len(entries) <= 1 {
+				return nil
+			}
+		}
+
+		return stopErr
+	})
+
+	if err != nil && err != stopErr {
+		return "", err
+	}
+
+	return fPath, nil
+}
+
+func FindPathToFile(fsys fs.FS, file string) (string, error) {
+	stat, _ := fs.Stat(fsys, file)
+	if stat != nil {
+		return ".", nil
+	}
+	var indexFiles []string
+	err := fs.WalkDir(fsys, ".", func(path string, d fs.DirEntry, err error) error {
+		if err != nil {
+			return err
+		}
+		if strings.HasSuffix(path, file) {
+			indexFiles = append(indexFiles, path)
+		}
+		return nil
+	})
+	if err != nil {
+		return "", err
+	}
+
+	if len(indexFiles) > 1 {
+		selected := indexFiles[0]
+		for _, f := range indexFiles {
+			if len(f) < len(selected) {
+				selected = f
+			}
+		}
+		path, _ := filepath.Split(selected)
+		return path, nil
+	}
+	if len(indexFiles) > 0 {
+		path, _ := filepath.Split(indexFiles[0])
+		return path, nil
+	}
+	return "", fmt.Errorf("%s: %w", file, os.ErrNotExist)
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/mimecache.go

@@ -0,0 +1,67 @@
+package assetserver
+
+import (
+	"net/http"
+	"path/filepath"
+	"sync"
+
+	"github.com/wailsapp/mimetype"
+)
+
+var (
+	mimeCache = map[string]string{}
+	mimeMutex sync.Mutex
+
+	// The list of builtin mime-types by extension as defined by
+	// the golang standard lib package "mime"
+	// The standard lib also takes into account mime type definitions from
+	// etc files like '/etc/apache2/mime.types' but we want to have the
+	// same behavivour on all platforms and not depend on some external file.
+	mimeTypesByExt = map[string]string{
+		".avif": "image/avif",
+		".css":  "text/css; charset=utf-8",
+		".gif":  "image/gif",
+		".htm":  "text/html; charset=utf-8",
+		".html": "text/html; charset=utf-8",
+		".jpeg": "image/jpeg",
+		".jpg":  "image/jpeg",
+		".js":   "text/javascript; charset=utf-8",
+		".json": "application/json",
+		".mjs":  "text/javascript; charset=utf-8",
+		".pdf":  "application/pdf",
+		".png":  "image/png",
+		".svg":  "image/svg+xml",
+		".wasm": "application/wasm",
+		".webp": "image/webp",
+		".xml":  "text/xml; charset=utf-8",
+	}
+)
+
+func GetMimetype(filename string, data []byte) string {
+	mimeMutex.Lock()
+	defer mimeMutex.Unlock()
+
+	result := mimeTypesByExt[filepath.Ext(filename)]
+	if result != "" {
+		return result
+	}
+
+	result = mimeCache[filename]
+	if result != "" {
+		return result
+	}
+
+	detect := mimetype.Detect(data)
+	if detect == nil {
+		result = http.DetectContentType(data)
+	} else {
+		result = detect.String()
+	}
+
+	if result == "" {
+		result = "application/octet-stream"
+	}
+
+	mimeCache[filename] = result
+	return result
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/ringqueue.go

@@ -0,0 +1,101 @@
+// Code from https://github.com/erikdubbelboer/ringqueue
+/*
+The MIT License (MIT)
+
+Copyright (c) 2015 Erik Dubbelboer
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+*/
+package assetserver
+
+type ringqueue[T any] struct {
+	nodes []T
+	head  int
+	tail  int
+	cnt   int
+
+	minSize int
+}
+
+func newRingqueue[T any](minSize uint) *ringqueue[T] {
+	if minSize < 2 {
+		minSize = 2
+	}
+	return &ringqueue[T]{
+		nodes:   make([]T, minSize),
+		minSize: int(minSize),
+	}
+}
+
+func (q *ringqueue[T]) resize(n int) {
+	nodes := make([]T, n)
+	if q.head < q.tail {
+		copy(nodes, q.nodes[q.head:q.tail])
+	} else {
+		copy(nodes, q.nodes[q.head:])
+		copy(nodes[len(q.nodes)-q.head:], q.nodes[:q.tail])
+	}
+
+	q.tail = q.cnt % n
+	q.head = 0
+	q.nodes = nodes
+}
+
+func (q *ringqueue[T]) Add(i T) {
+	if q.cnt == len(q.nodes) {
+		// Also tested a grow rate of 1.5, see: http://stackoverflow.com/questions/2269063/buffer-growth-strategy
+		// In Go this resulted in a higher memory usage.
+		q.resize(q.cnt * 2)
+	}
+	q.nodes[q.tail] = i
+	q.tail = (q.tail + 1) % len(q.nodes)
+	q.cnt++
+}
+
+func (q *ringqueue[T]) Peek() (T, bool) {
+	if q.cnt == 0 {
+		var none T
+		return none, false
+	}
+	return q.nodes[q.head], true
+}
+
+func (q *ringqueue[T]) Remove() (T, bool) {
+	if q.cnt == 0 {
+		var none T
+		return none, false
+	}
+	i := q.nodes[q.head]
+	q.head = (q.head + 1) % len(q.nodes)
+	q.cnt--
+
+	if n := len(q.nodes) / 2; n > q.minSize && q.cnt <= n {
+		q.resize(n)
+	}
+
+	return i, true
+}
+
+func (q *ringqueue[T]) Cap() int {
+	return cap(q.nodes)
+}
+
+func (q *ringqueue[T]) Len() int {
+	return q.cnt
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/request.go

@@ -0,0 +1,17 @@
+package webview
+
+import (
+	"io"
+	"net/http"
+)
+
+type Request interface {
+	URL() (string, error)
+	Method() (string, error)
+	Header() (http.Header, error)
+	Body() (io.ReadCloser, error)
+
+	Response() ResponseWriter
+
+	Close() error
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/request_darwin.go

@@ -0,0 +1,251 @@
+//go:build darwin
+
+package webview
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework Foundation -framework WebKit
+
+#import <Foundation/Foundation.h>
+#import <WebKit/WebKit.h>
+#include <string.h>
+
+static void URLSchemeTaskRetain(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	[urlSchemeTask retain];
+}
+
+static void URLSchemeTaskRelease(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	[urlSchemeTask release];
+}
+
+static const char * URLSchemeTaskRequestURL(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	@autoreleasepool {
+		return [urlSchemeTask.request.URL.absoluteString UTF8String];
+	}
+}
+
+static const char * URLSchemeTaskRequestMethod(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	@autoreleasepool {
+		return [urlSchemeTask.request.HTTPMethod UTF8String];
+	}
+}
+
+static const char * URLSchemeTaskRequestHeadersJSON(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	@autoreleasepool {
+		NSData *headerData = [NSJSONSerialization dataWithJSONObject: urlSchemeTask.request.allHTTPHeaderFields options:0 error: nil];
+		if (!headerData) {
+			return nil;
+		}
+
+		NSString* headerString = [[[NSString alloc] initWithData:headerData encoding:NSUTF8StringEncoding] autorelease];
+		const char * headerJSON = [headerString UTF8String];
+
+		return strdup(headerJSON);
+	}
+}
+
+static bool URLSchemeTaskRequestBodyBytes(void *wkUrlSchemeTask, const void **body, int *bodyLen) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	@autoreleasepool {
+		if (!urlSchemeTask.request.HTTPBody) {
+			return false;
+		}
+
+		*body = urlSchemeTask.request.HTTPBody.bytes;
+		*bodyLen = urlSchemeTask.request.HTTPBody.length;
+		return true;
+	}
+}
+
+static bool URLSchemeTaskRequestBodyStreamOpen(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	@autoreleasepool {
+		if (!urlSchemeTask.request.HTTPBodyStream) {
+			return false;
+		}
+
+		[urlSchemeTask.request.HTTPBodyStream open];
+		return true;
+	}
+}
+
+static void URLSchemeTaskRequestBodyStreamClose(void *wkUrlSchemeTask) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+	@autoreleasepool {
+		if (!urlSchemeTask.request.HTTPBodyStream) {
+			return;
+		}
+
+		[urlSchemeTask.request.HTTPBodyStream close];
+	}
+}
+
+static int URLSchemeTaskRequestBodyStreamRead(void *wkUrlSchemeTask, void *buf, int bufLen) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+
+	@autoreleasepool {
+		NSInputStream *stream = urlSchemeTask.request.HTTPBodyStream;
+		if (!stream) {
+			return -2;
+		}
+
+		NSStreamStatus status = stream.streamStatus;
+		if (status == NSStreamStatusAtEnd || !stream.hasBytesAvailable) {
+			return 0;
+		} else if (status != NSStreamStatusOpen) {
+			return -3;
+		}
+
+		return [stream read:buf maxLength:bufLen];
+	}
+}
+*/
+import "C"
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io"
+	"net/http"
+	"unsafe"
+)
+
+// NewRequest creates as new WebViewRequest based on a pointer to an `id<WKURLSchemeTask>`
+func NewRequest(wkURLSchemeTask unsafe.Pointer) Request {
+	C.URLSchemeTaskRetain(wkURLSchemeTask)
+	return newRequestFinalizer(&request{task: wkURLSchemeTask})
+}
+
+var _ Request = &request{}
+
+type request struct {
+	task unsafe.Pointer
+
+	header http.Header
+	body   io.ReadCloser
+	rw     *responseWriter
+}
+
+func (r *request) URL() (string, error) {
+	return C.GoString(C.URLSchemeTaskRequestURL(r.task)), nil
+}
+
+func (r *request) Method() (string, error) {
+	return C.GoString(C.URLSchemeTaskRequestMethod(r.task)), nil
+}
+
+func (r *request) Header() (http.Header, error) {
+	if r.header != nil {
+		return r.header, nil
+	}
+
+	header := http.Header{}
+	if cHeaders := C.URLSchemeTaskRequestHeadersJSON(r.task); cHeaders != nil {
+		if headers := C.GoString(cHeaders); headers != "" {
+			var h map[string]string
+			if err := json.Unmarshal([]byte(headers), &h); err != nil {
+				return nil, fmt.Errorf("unable to unmarshal request headers: %s", err)
+			}
+
+			for k, v := range h {
+				header.Add(k, v)
+			}
+		}
+		C.free(unsafe.Pointer(cHeaders))
+	}
+	r.header = header
+	return header, nil
+}
+
+func (r *request) Body() (io.ReadCloser, error) {
+	if r.body != nil {
+		return r.body, nil
+	}
+
+	var body unsafe.Pointer
+	var bodyLen C.int
+	if C.URLSchemeTaskRequestBodyBytes(r.task, &body, &bodyLen) {
+		if body != nil && bodyLen > 0 {
+			r.body = io.NopCloser(bytes.NewReader(C.GoBytes(body, bodyLen)))
+		} else {
+			r.body = http.NoBody
+		}
+	} else if C.URLSchemeTaskRequestBodyStreamOpen(r.task) {
+		r.body = &requestBodyStreamReader{task: r.task}
+	}
+
+	return r.body, nil
+}
+
+func (r *request) Response() ResponseWriter {
+	if r.rw != nil {
+		return r.rw
+	}
+
+	r.rw = &responseWriter{r: r}
+	return r.rw
+}
+
+func (r *request) Close() error {
+	var err error
+	if r.body != nil {
+		err = r.body.Close()
+	}
+	err = r.Response().Finish()
+	if err != nil {
+		return err
+	}
+	C.URLSchemeTaskRelease(r.task)
+	return err
+}
+
+var _ io.ReadCloser = &requestBodyStreamReader{}
+
+type requestBodyStreamReader struct {
+	task   unsafe.Pointer
+	closed bool
+}
+
+// Read implements io.Reader
+func (r *requestBodyStreamReader) Read(p []byte) (n int, err error) {
+	var content unsafe.Pointer
+	var contentLen int
+	if p != nil {
+		content = unsafe.Pointer(&p[0])
+		contentLen = len(p)
+	}
+
+	res := C.URLSchemeTaskRequestBodyStreamRead(r.task, content, C.int(contentLen))
+	if res > 0 {
+		return int(res), nil
+	}
+
+	switch res {
+	case 0:
+		return 0, io.EOF
+	case -1:
+		return 0, fmt.Errorf("body: stream error")
+	case -2:
+		return 0, fmt.Errorf("body: no stream defined")
+	case -3:
+		return 0, io.ErrClosedPipe
+	default:
+		return 0, fmt.Errorf("body: unknown error %d", res)
+	}
+}
+
+func (r *requestBodyStreamReader) Close() error {
+	if r.closed {
+		return nil
+	}
+	r.closed = true
+
+	C.URLSchemeTaskRequestBodyStreamClose(r.task)
+	return nil
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/request_finalizer.go

@@ -0,0 +1,40 @@
+package webview
+
+import (
+	"runtime"
+	"sync/atomic"
+)
+
+var _ Request = &requestFinalizer{}
+
+type requestFinalizer struct {
+	Request
+	closed int32
+}
+
+// newRequestFinalizer returns a request with a runtime finalizer to make sure it will be closed from the finalizer
+// if it has not been already closed.
+// It also makes sure Close() of the wrapping request is only called once.
+func newRequestFinalizer(r Request) Request {
+	rf := &requestFinalizer{Request: r}
+	// Make sure to async release since it might block the finalizer goroutine for a longer period
+	runtime.SetFinalizer(rf, func(obj *requestFinalizer) { rf.close(true) })
+	return rf
+}
+
+func (r *requestFinalizer) Close() error {
+	return r.close(false)
+}
+
+func (r *requestFinalizer) close(asyncRelease bool) error {
+	if atomic.CompareAndSwapInt32(&r.closed, 0, 1) {
+		runtime.SetFinalizer(r, nil)
+		if asyncRelease {
+			go r.Request.Close()
+			return nil
+		} else {
+			return r.Request.Close()
+		}
+	}
+	return nil
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/request_linux.go

@@ -0,0 +1,85 @@
+//go:build linux
+// +build linux
+
+package webview
+
+/*
+#cgo linux pkg-config: gtk+-3.0 gio-unix-2.0
+#cgo !webkit2_41 pkg-config: webkit2gtk-4.0
+#cgo webkit2_41 pkg-config: webkit2gtk-4.1
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+*/
+import "C"
+
+import (
+	"io"
+	"net/http"
+	"unsafe"
+)
+
+// NewRequest creates as new WebViewRequest based on a pointer to an `WebKitURISchemeRequest`
+func NewRequest(webKitURISchemeRequest unsafe.Pointer) Request {
+	webkitReq := (*C.WebKitURISchemeRequest)(webKitURISchemeRequest)
+	C.g_object_ref(C.gpointer(webkitReq))
+
+	req := &request{req: webkitReq}
+	return newRequestFinalizer(req)
+}
+
+var _ Request = &request{}
+
+type request struct {
+	req *C.WebKitURISchemeRequest
+
+	header http.Header
+	body   io.ReadCloser
+	rw     *responseWriter
+}
+
+func (r *request) URL() (string, error) {
+	return C.GoString(C.webkit_uri_scheme_request_get_uri(r.req)), nil
+}
+
+func (r *request) Method() (string, error) {
+	return webkit_uri_scheme_request_get_http_method(r.req), nil
+}
+
+func (r *request) Header() (http.Header, error) {
+	if r.header != nil {
+		return r.header, nil
+	}
+
+	r.header = webkit_uri_scheme_request_get_http_headers(r.req)
+	return r.header, nil
+}
+
+func (r *request) Body() (io.ReadCloser, error) {
+	if r.body != nil {
+		return r.body, nil
+	}
+
+	r.body = webkit_uri_scheme_request_get_http_body(r.req)
+
+	return r.body, nil
+}
+
+func (r *request) Response() ResponseWriter {
+	if r.rw != nil {
+		return r.rw
+	}
+
+	r.rw = &responseWriter{req: r.req}
+	return r.rw
+}
+
+func (r *request) Close() error {
+	var err error
+	if r.body != nil {
+		err = r.body.Close()
+	}
+	r.Response().Finish()
+	C.g_object_unref(C.gpointer(r.req))
+	return err
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/request_windows.go

@@ -0,0 +1,217 @@
+//go:build windows
+// +build windows
+
+package webview
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"strings"
+
+	"github.com/wailsapp/go-webview2/pkg/edge"
+)
+
+// NewRequest creates as new WebViewRequest for chromium. This Method must be called from the Main-Thread!
+func NewRequest(env *edge.ICoreWebView2Environment, args *edge.ICoreWebView2WebResourceRequestedEventArgs, invokeSync func(fn func())) (Request, error) {
+	req, err := args.GetRequest()
+	if err != nil {
+		return nil, fmt.Errorf("GetRequest failed: %s", err)
+	}
+	defer req.Release()
+
+	r := &request{
+		invokeSync: invokeSync,
+	}
+
+	code := http.StatusInternalServerError
+	r.response, err = env.CreateWebResourceResponse(nil, code, http.StatusText(code), "")
+	if err != nil {
+		return nil, fmt.Errorf("CreateWebResourceResponse failed: %s", err)
+	}
+
+	if err := args.PutResponse(r.response); err != nil {
+		r.finishResponse()
+		return nil, fmt.Errorf("PutResponse failed: %s", err)
+	}
+
+	r.deferral, err = args.GetDeferral()
+	if err != nil {
+		r.finishResponse()
+		return nil, fmt.Errorf("GetDeferral failed: %s", err)
+	}
+
+	r.url, r.urlErr = req.GetUri()
+	r.method, r.methodErr = req.GetMethod()
+	r.header, r.headerErr = getHeaders(req)
+
+	if content, err := req.GetContent(); err != nil {
+		r.bodyErr = err
+	} else if content != nil {
+		// It is safe to access Content from another Thread: https://learn.microsoft.com/en-us/microsoft-edge/webview2/concepts/threading-model#thread-safety
+		r.body = &iStreamReleaseCloser{stream: content}
+	}
+
+	return r, nil
+}
+
+var _ Request = &request{}
+
+type request struct {
+	response *edge.ICoreWebView2WebResourceResponse
+	deferral *edge.ICoreWebView2Deferral
+
+	url    string
+	urlErr error
+
+	method    string
+	methodErr error
+
+	header    http.Header
+	headerErr error
+
+	body    io.ReadCloser
+	bodyErr error
+	rw      *responseWriter
+
+	invokeSync func(fn func())
+}
+
+func (r *request) URL() (string, error) {
+	return r.url, r.urlErr
+}
+
+func (r *request) Method() (string, error) {
+	return r.method, r.methodErr
+}
+
+func (r *request) Header() (http.Header, error) {
+	return r.header, r.headerErr
+}
+
+func (r *request) Body() (io.ReadCloser, error) {
+	return r.body, r.bodyErr
+}
+
+func (r *request) Response() ResponseWriter {
+	if r.rw != nil {
+		return r.rw
+	}
+
+	r.rw = &responseWriter{req: r}
+	return r.rw
+}
+
+func (r *request) Close() error {
+	var errs []error
+	if r.body != nil {
+		if err := r.body.Close(); err != nil {
+			errs = append(errs, err)
+		}
+		r.body = nil
+	}
+
+	if err := r.Response().Finish(); err != nil {
+		errs = append(errs, err)
+	}
+
+	return combineErrs(errs)
+}
+
+// finishResponse must be called on the main-thread
+func (r *request) finishResponse() error {
+	var errs []error
+	if r.response != nil {
+		if err := r.response.Release(); err != nil {
+			errs = append(errs, err)
+		}
+		r.response = nil
+	}
+	if r.deferral != nil {
+		if err := r.deferral.Complete(); err != nil {
+			errs = append(errs, err)
+		}
+
+		if err := r.deferral.Release(); err != nil {
+			errs = append(errs, err)
+		}
+		r.deferral = nil
+	}
+	return combineErrs(errs)
+}
+
+type iStreamReleaseCloser struct {
+	stream *edge.IStream
+	closed bool
+}
+
+func (i *iStreamReleaseCloser) Read(p []byte) (int, error) {
+	if i.closed {
+		return 0, io.ErrClosedPipe
+	}
+	return i.stream.Read(p)
+}
+
+func (i *iStreamReleaseCloser) Close() error {
+	if i.closed {
+		return nil
+	}
+	i.closed = true
+	return i.stream.Release()
+}
+
+func getHeaders(req *edge.ICoreWebView2WebResourceRequest) (http.Header, error) {
+	header := http.Header{}
+	headers, err := req.GetHeaders()
+	if err != nil {
+		return nil, fmt.Errorf("GetHeaders Error: %s", err)
+	}
+	defer headers.Release()
+
+	headersIt, err := headers.GetIterator()
+	if err != nil {
+		return nil, fmt.Errorf("GetIterator Error: %s", err)
+	}
+	defer headersIt.Release()
+
+	for {
+		has, err := headersIt.HasCurrentHeader()
+		if err != nil {
+			return nil, fmt.Errorf("HasCurrentHeader Error: %s", err)
+		}
+		if !has {
+			break
+		}
+
+		name, value, err := headersIt.GetCurrentHeader()
+		if err != nil {
+			return nil, fmt.Errorf("GetCurrentHeader Error: %s", err)
+		}
+
+		header.Set(name, value)
+		if _, err := headersIt.MoveNext(); err != nil {
+			return nil, fmt.Errorf("MoveNext Error: %s", err)
+		}
+	}
+
+	// WebView2 has problems when a request returns a 304 status code and the WebView2 is going to hang for other
+	// requests including IPC calls.
+	// So prevent 304 status codes by removing the headers that are used in combinationwith caching.
+	header.Del("If-Modified-Since")
+	header.Del("If-None-Match")
+	return header, nil
+}
+
+func combineErrs(errs []error) error {
+	// TODO use Go1.20 errors.Join
+	if len(errs) == 0 {
+		return nil
+	}
+
+	errStrings := make([]string, len(errs))
+	for i, err := range errs {
+		errStrings[i] = err.Error()
+	}
+
+	return fmt.Errorf(strings.Join(errStrings, "\n"))
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/responsewriter.go

@@ -0,0 +1,25 @@
+package webview
+
+import (
+	"errors"
+	"net/http"
+)
+
+const (
+	HeaderContentLength = "Content-Length"
+	HeaderContentType   = "Content-Type"
+)
+
+var (
+	errRequestStopped   = errors.New("request has been stopped")
+	errResponseFinished = errors.New("response has been finished")
+)
+
+// A ResponseWriter interface is used by an HTTP handler to
+// construct an HTTP response for the WebView.
+type ResponseWriter interface {
+	http.ResponseWriter
+
+	// Finish the response and flush all data. A Finish after the request has already been finished has no effect.
+	Finish() error
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/responsewriter_darwin.go

@@ -0,0 +1,164 @@
+//go:build darwin
+
+package webview
+
+/*
+#cgo CFLAGS: -x objective-c
+#cgo LDFLAGS: -framework Foundation -framework WebKit
+
+#import <Foundation/Foundation.h>
+#import <WebKit/WebKit.h>
+
+typedef void (^schemeTaskCaller)(id<WKURLSchemeTask>);
+
+static bool urlSchemeTaskCall(void *wkUrlSchemeTask, schemeTaskCaller fn) {
+	id<WKURLSchemeTask> urlSchemeTask = (id<WKURLSchemeTask>) wkUrlSchemeTask;
+    if (urlSchemeTask == nil) {
+        return false;
+    }
+
+	@autoreleasepool {
+		@try {
+			fn(urlSchemeTask);
+		} @catch (NSException *exception) {
+			// This is very bad to detect a stopped schemeTask this should be implemented in a better way
+			// But it seems to be very tricky to not deadlock when keeping a lock curing executing fn()
+			// It seems like those call switch the thread back to the main thread and then deadlocks when they reentrant want
+			// to get the lock again to start another request or stop it.
+			if ([exception.reason isEqualToString: @"This task has already been stopped"]) {
+				return false;
+			}
+
+			@throw exception;
+		}
+
+		return true;
+	}
+}
+
+static bool URLSchemeTaskDidReceiveData(void *wkUrlSchemeTask, void* data, int datalength) {
+	return urlSchemeTaskCall(
+		wkUrlSchemeTask,
+		^(id<WKURLSchemeTask> urlSchemeTask) {
+			NSData *nsdata = [NSData dataWithBytes:data length:datalength];
+			[urlSchemeTask didReceiveData:nsdata];
+    	});
+}
+
+static bool URLSchemeTaskDidFinish(void *wkUrlSchemeTask) {
+	return urlSchemeTaskCall(
+		wkUrlSchemeTask,
+		^(id<WKURLSchemeTask> urlSchemeTask) {
+			[urlSchemeTask didFinish];
+    	});
+}
+
+static bool URLSchemeTaskDidReceiveResponse(void *wkUrlSchemeTask, int statusCode, void *headersString, int headersStringLength) {
+	return urlSchemeTaskCall(
+		wkUrlSchemeTask,
+		^(id<WKURLSchemeTask> urlSchemeTask) {
+			NSData *nsHeadersJSON = [NSData dataWithBytes:headersString length:headersStringLength];
+			NSDictionary *headerFields = [NSJSONSerialization JSONObjectWithData:nsHeadersJSON options: NSJSONReadingMutableContainers error: nil];
+        	NSHTTPURLResponse *response = [[[NSHTTPURLResponse alloc] initWithURL:urlSchemeTask.request.URL statusCode:statusCode HTTPVersion:@"HTTP/1.1" headerFields:headerFields] autorelease];
+
+			[urlSchemeTask didReceiveResponse:response];
+    	});
+}
+*/
+import "C"
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"unsafe"
+)
+
+var _ ResponseWriter = &responseWriter{}
+
+type responseWriter struct {
+	r *request
+
+	header      http.Header
+	wroteHeader bool
+
+	finished bool
+}
+
+func (rw *responseWriter) Header() http.Header {
+	if rw.header == nil {
+		rw.header = http.Header{}
+	}
+	return rw.header
+}
+
+func (rw *responseWriter) Write(buf []byte) (int, error) {
+	if rw.finished {
+		return 0, errResponseFinished
+	}
+
+	rw.WriteHeader(http.StatusOK)
+
+	var contentLen int
+	if buf != nil {
+		contentLen = len(buf)
+	}
+
+	if contentLen > 0 {
+		// Create a C array to hold the data
+		cBuf := C.malloc(C.size_t(contentLen))
+		if cBuf == nil {
+			return 0, fmt.Errorf("memory allocation failed for %d bytes", contentLen)
+		}
+		defer C.free(cBuf)
+
+		// Copy the Go slice to the C array
+		C.memcpy(cBuf, unsafe.Pointer(&buf[0]), C.size_t(contentLen))
+
+		if !C.URLSchemeTaskDidReceiveData(rw.r.task, cBuf, C.int(contentLen)) {
+			return 0, errRequestStopped
+		}
+	} else {
+		if !C.URLSchemeTaskDidReceiveData(rw.r.task, nil, 0) {
+			return 0, errRequestStopped
+		}
+	}
+
+	return contentLen, nil
+}
+
+func (rw *responseWriter) WriteHeader(code int) {
+	if rw.wroteHeader || rw.finished {
+		return
+	}
+	rw.wroteHeader = true
+
+	header := map[string]string{}
+	for k := range rw.Header() {
+		header[k] = rw.Header().Get(k)
+	}
+	headerData, _ := json.Marshal(header)
+
+	var headers unsafe.Pointer
+	var headersLen int
+	if len(headerData) != 0 {
+		headers = unsafe.Pointer(&headerData[0])
+		headersLen = len(headerData)
+	}
+
+	C.URLSchemeTaskDidReceiveResponse(rw.r.task, C.int(code), headers, C.int(headersLen))
+}
+
+func (rw *responseWriter) Finish() error {
+	if !rw.wroteHeader {
+		rw.WriteHeader(http.StatusNotImplemented)
+	}
+
+	if rw.finished {
+		return nil
+	}
+	rw.finished = true
+
+	C.URLSchemeTaskDidFinish(rw.r.task)
+	return nil
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/responsewriter_linux.go

@@ -0,0 +1,132 @@
+//go:build linux
+// +build linux
+
+package webview
+
+/*
+#cgo linux pkg-config: gtk+-3.0 gio-unix-2.0
+#cgo !webkit2_41 pkg-config: webkit2gtk-4.0
+#cgo webkit2_41 pkg-config: webkit2gtk-4.1
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+#include "gio/gunixinputstream.h"
+
+*/
+import "C"
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"os"
+	"strconv"
+	"syscall"
+	"unsafe"
+)
+
+type responseWriter struct {
+	req *C.WebKitURISchemeRequest
+
+	header      http.Header
+	wroteHeader bool
+	finished    bool
+
+	w    io.WriteCloser
+	wErr error
+}
+
+func (rw *responseWriter) Header() http.Header {
+	if rw.header == nil {
+		rw.header = http.Header{}
+	}
+	return rw.header
+}
+
+func (rw *responseWriter) Write(buf []byte) (int, error) {
+	if rw.finished {
+		return 0, errResponseFinished
+	}
+
+	rw.WriteHeader(http.StatusOK)
+	if rw.wErr != nil {
+		return 0, rw.wErr
+	}
+	return rw.w.Write(buf)
+}
+
+func (rw *responseWriter) WriteHeader(code int) {
+	if rw.wroteHeader || rw.finished {
+		return
+	}
+	rw.wroteHeader = true
+
+	contentLength := int64(-1)
+	if sLen := rw.Header().Get(HeaderContentLength); sLen != "" {
+		if pLen, _ := strconv.ParseInt(sLen, 10, 64); pLen > 0 {
+			contentLength = pLen
+		}
+	}
+
+	// We can't use os.Pipe here, because that returns files with a finalizer for closing the FD. But the control over the
+	// read FD is given to the InputStream and will be closed there.
+	// Furthermore we especially don't want to have the FD_CLOEXEC
+	rFD, w, err := pipe()
+	if err != nil {
+		rw.finishWithError(http.StatusInternalServerError, fmt.Errorf("unable to open pipe: %s", err))
+		return
+	}
+	rw.w = w
+
+	stream := C.g_unix_input_stream_new(C.int(rFD), C.gboolean(1))
+	defer C.g_object_unref(C.gpointer(stream))
+
+	if err := webkit_uri_scheme_request_finish(rw.req, code, rw.Header(), stream, contentLength); err != nil {
+		rw.finishWithError(http.StatusInternalServerError, fmt.Errorf("unable to finish request: %s", err))
+		return
+	}
+}
+
+func (rw *responseWriter) Finish() error {
+	if !rw.wroteHeader {
+		rw.WriteHeader(http.StatusNotImplemented)
+	}
+
+	if rw.finished {
+		return nil
+	}
+	rw.finished = true
+	if rw.w != nil {
+		rw.w.Close()
+	}
+	return nil
+}
+
+func (rw *responseWriter) finishWithError(code int, err error) {
+	if rw.w != nil {
+		rw.w.Close()
+		rw.w = &nopCloser{io.Discard}
+	}
+	rw.wErr = err
+
+	msg := C.CString(err.Error())
+	gerr := C.g_error_new_literal(C.g_quark_from_string(msg), C.int(code), msg)
+	C.webkit_uri_scheme_request_finish_error(rw.req, gerr)
+	C.g_error_free(gerr)
+	C.free(unsafe.Pointer(msg))
+}
+
+type nopCloser struct {
+	io.Writer
+}
+
+func (nopCloser) Close() error { return nil }
+
+func pipe() (r int, w *os.File, err error) {
+	var p [2]int
+	e := syscall.Pipe2(p[0:], 0)
+	if e != nil {
+		return 0, nil, fmt.Errorf("pipe2: %s", e)
+	}
+
+	return p[0], os.NewFile(uintptr(p[1]), "|1"), nil
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/responsewriter_windows.go

@@ -0,0 +1,105 @@
+//go:build windows
+// +build windows
+
+package webview
+
+import (
+	"bytes"
+	"fmt"
+	"net/http"
+	"strings"
+)
+
+var _ http.ResponseWriter = &responseWriter{}
+
+type responseWriter struct {
+	req *request
+
+	header      http.Header
+	wroteHeader bool
+	code        int
+	body        *bytes.Buffer
+
+	finished bool
+}
+
+func (rw *responseWriter) Header() http.Header {
+	if rw.header == nil {
+		rw.header = http.Header{}
+	}
+	return rw.header
+}
+
+func (rw *responseWriter) Write(buf []byte) (int, error) {
+	if rw.finished {
+		return 0, errResponseFinished
+	}
+
+	rw.WriteHeader(http.StatusOK)
+
+	return rw.body.Write(buf)
+}
+
+func (rw *responseWriter) WriteHeader(code int) {
+	if rw.wroteHeader || rw.finished {
+		return
+	}
+	rw.wroteHeader = true
+
+	if rw.body == nil {
+		rw.body = &bytes.Buffer{}
+	}
+
+	rw.code = code
+}
+
+func (rw *responseWriter) Finish() error {
+	if !rw.wroteHeader {
+		rw.WriteHeader(http.StatusNotImplemented)
+	}
+
+	if rw.finished {
+		return nil
+	}
+	rw.finished = true
+
+	var errs []error
+
+	code := rw.code
+	if code == http.StatusNotModified {
+		// WebView2 has problems when a request returns a 304 status code and the WebView2 is going to hang for other
+		// requests including IPC calls.
+		errs = append(errs, fmt.Errorf("AssetServer returned 304 - StatusNotModified which are going to hang WebView2, changed code to 505 - StatusInternalServerError"))
+		code = http.StatusInternalServerError
+	}
+
+	rw.req.invokeSync(func() {
+		resp := rw.req.response
+
+		hdrs, err := resp.GetHeaders()
+		if err != nil {
+			errs = append(errs, fmt.Errorf("Resp.GetHeaders failed: %s", err))
+		} else {
+			for k, v := range rw.header {
+				if err := hdrs.AppendHeader(k, strings.Join(v, ",")); err != nil {
+					errs = append(errs, fmt.Errorf("Resp.AppendHeader failed: %s", err))
+				}
+			}
+			hdrs.Release()
+		}
+
+		if err := resp.PutStatusCode(code); err != nil {
+			errs = append(errs, fmt.Errorf("Resp.PutStatusCode failed: %s", err))
+		}
+
+		if err := resp.PutByteContent(rw.body.Bytes()); err != nil {
+			errs = append(errs, fmt.Errorf("Resp.PutByteContent failed: %s", err))
+		}
+
+		if err := rw.req.finishResponse(); err != nil {
+			errs = append(errs, fmt.Errorf("Resp.finishResponse failed: %s", err))
+		}
+	})
+
+	return combineErrs(errs)
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/webkit2_36+.go

@@ -0,0 +1,71 @@
+//go:build linux && (webkit2_36 || webkit2_40 || webkit2_41 )
+
+package webview
+
+/*
+#cgo linux pkg-config: gtk+-3.0 
+#cgo !webkit2_41 pkg-config: webkit2gtk-4.0 libsoup-2.4
+#cgo webkit2_41 pkg-config: webkit2gtk-4.1 libsoup-3.0
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+#include "libsoup/soup.h"
+*/
+import "C"
+
+import (
+	"net/http"
+	"strings"
+	"unsafe"
+)
+
+func webkit_uri_scheme_request_get_http_method(req *C.WebKitURISchemeRequest) string {
+	method := C.GoString(C.webkit_uri_scheme_request_get_http_method(req))
+	return strings.ToUpper(method)
+}
+
+func webkit_uri_scheme_request_get_http_headers(req *C.WebKitURISchemeRequest) http.Header {
+	hdrs := C.webkit_uri_scheme_request_get_http_headers(req)
+
+	var iter C.SoupMessageHeadersIter
+	C.soup_message_headers_iter_init(&iter, hdrs)
+
+	var name *C.char
+	var value *C.char
+
+	h := http.Header{}
+	for C.soup_message_headers_iter_next(&iter, &name, &value) != 0 {
+		h.Add(C.GoString(name), C.GoString(value))
+	}
+
+	return h
+}
+
+func webkit_uri_scheme_request_finish(req *C.WebKitURISchemeRequest, code int, header http.Header, stream *C.GInputStream, streamLength int64) error {
+	resp := C.webkit_uri_scheme_response_new(stream, C.gint64(streamLength))
+	defer C.g_object_unref(C.gpointer(resp))
+
+	cReason := C.CString(http.StatusText(code))
+	C.webkit_uri_scheme_response_set_status(resp, C.guint(code), cReason)
+	C.free(unsafe.Pointer(cReason))
+
+	cMimeType := C.CString(header.Get(HeaderContentType))
+	C.webkit_uri_scheme_response_set_content_type(resp, cMimeType)
+	C.free(unsafe.Pointer(cMimeType))
+
+	hdrs := C.soup_message_headers_new(C.SOUP_MESSAGE_HEADERS_RESPONSE)
+	for name, values := range header {
+		cName := C.CString(name)
+		for _, value := range values {
+			cValue := C.CString(value)
+			C.soup_message_headers_append(hdrs, cName, cValue)
+			C.free(unsafe.Pointer(cValue))
+		}
+		C.free(unsafe.Pointer(cName))
+	}
+
+	C.webkit_uri_scheme_response_set_http_headers(resp, hdrs)
+
+	C.webkit_uri_scheme_request_finish_with_response(req, resp)
+	return nil
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/webkit2_36.go

@@ -0,0 +1,21 @@
+//go:build linux && webkit2_36
+
+package webview
+
+/*
+#cgo linux pkg-config: webkit2gtk-4.0
+
+#include "webkit2/webkit2.h"
+*/
+import "C"
+
+import (
+	"io"
+	"net/http"
+)
+
+const Webkit2MinMinorVersion = 36
+
+func webkit_uri_scheme_request_get_http_body(_ *C.WebKitURISchemeRequest) io.ReadCloser {
+	return http.NoBody
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/webkit2_40+.go

@@ -0,0 +1,85 @@
+//go:build linux && (webkit2_40 || webkit2_41)
+
+package webview
+
+/*
+#cgo linux pkg-config: gtk+-3.0 gio-unix-2.0
+#cgo !webkit2_41 pkg-config: webkit2gtk-4.0
+#cgo webkit2_41 pkg-config: webkit2gtk-4.1
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+#include "gio/gunixinputstream.h"
+*/
+import "C"
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"unsafe"
+)
+
+func webkit_uri_scheme_request_get_http_body(req *C.WebKitURISchemeRequest) io.ReadCloser {
+	stream := C.webkit_uri_scheme_request_get_http_body(req)
+	if stream == nil {
+		return http.NoBody
+	}
+	return &webkitRequestBody{stream: stream}
+}
+
+type webkitRequestBody struct {
+	stream *C.GInputStream
+	closed bool
+}
+
+// Read implements io.Reader
+func (r *webkitRequestBody) Read(p []byte) (int, error) {
+	if r.closed {
+		return 0, io.ErrClosedPipe
+	}
+
+	var content unsafe.Pointer
+	var contentLen int
+	if p != nil {
+		content = unsafe.Pointer(&p[0])
+		contentLen = len(p)
+	}
+
+	var n C.gsize
+	var gErr *C.GError
+	res := C.g_input_stream_read_all(r.stream, content, C.gsize(contentLen), &n, nil, &gErr)
+	if res == 0 {
+		return 0, formatGError("stream read failed", gErr)
+	} else if n == 0 {
+		return 0, io.EOF
+	}
+	return int(n), nil
+}
+
+func (r *webkitRequestBody) Close() error {
+	if r.closed {
+		return nil
+	}
+	r.closed = true
+
+	// https://docs.gtk.org/gio/method.InputStream.close.html
+	// Streams will be automatically closed when the last reference is dropped, but you might want to call this function
+	// to make sure resources are released as early as possible.
+	var err error
+	var gErr *C.GError
+	if C.g_input_stream_close(r.stream, nil, &gErr) == 0 {
+		err = formatGError("stream close failed", gErr)
+	}
+	C.g_object_unref(C.gpointer(r.stream))
+	r.stream = nil
+	return err
+}
+
+func formatGError(msg string, gErr *C.GError, args ...any) error {
+	if gErr != nil && gErr.message != nil {
+		msg += ": " + C.GoString(gErr.message)
+		C.g_error_free(gErr)
+	}
+	return fmt.Errorf(msg, args...)
+}

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/webkit2_40.go

@@ -0,0 +1,5 @@
+//go:build linux && webkit2_40
+
+package webview
+
+const Webkit2MinMinorVersion = 40

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/webkit2_41.go

@@ -0,0 +1,5 @@
+//go:build linux && webkit2_41
+
+package webview
+
+const Webkit2MinMinorVersion = 41

vendor/github.com/wailsapp/wails/v2/pkg/assetserver/webview/webkit2_legacy.go

@@ -0,0 +1,48 @@
+//go:build linux && !(webkit2_36 || webkit2_40 || webkit2_41)
+
+package webview
+
+/*
+#cgo linux pkg-config: gtk+-3.0 webkit2gtk-4.0
+
+#include "gtk/gtk.h"
+#include "webkit2/webkit2.h"
+*/
+import "C"
+
+import (
+	"fmt"
+	"io"
+	"net/http"
+	"unsafe"
+)
+
+const Webkit2MinMinorVersion = 0
+
+func webkit_uri_scheme_request_get_http_method(_ *C.WebKitURISchemeRequest) string {
+	return http.MethodGet
+}
+
+func webkit_uri_scheme_request_get_http_headers(_ *C.WebKitURISchemeRequest) http.Header {
+	// Fake some basic default headers that are needed if e.g. request are being proxied to the an external sever, like
+	// we do in the devserver.
+	h := http.Header{}
+	h.Add("Accept", "*/*")
+	h.Add("User-Agent", "wails.io/605.1.15")
+	return h
+}
+
+func webkit_uri_scheme_request_get_http_body(_ *C.WebKitURISchemeRequest) io.ReadCloser {
+	return http.NoBody
+}
+
+func webkit_uri_scheme_request_finish(req *C.WebKitURISchemeRequest, code int, header http.Header, stream *C.GInputStream, streamLength int64) error {
+	if code != http.StatusOK {
+		return fmt.Errorf("StatusCodes not supported: %d - %s", code, http.StatusText(code))
+	}
+
+	cMimeType := C.CString(header.Get(HeaderContentType))
+	C.webkit_uri_scheme_request_finish(req, stream, C.gint64(streamLength), cMimeType)
+	C.free(unsafe.Pointer(cMimeType))
+	return nil
+}