chore: v2.2.1

TinyGo compatible packages

.all-contributorsrc

@@ -0,0 +1,37 @@
+{
+  "projectName": "go-wasm-http-server",
+  "projectOwner": "nlepage",
+  "repoType": "github",
+  "repoHost": "https://github.com",
+  "files": [
+    "README.md"
+  ],
+  "imageSize": 100,
+  "commit": false,
+  "commitConvention": "gitmoji",
+  "contributors": [
+    {
+      "login": "jphastings",
+      "name": "JP Hastings-Edrei",
+      "avatar_url": "https://avatars.githubusercontent.com/u/42999?v=4",
+      "profile": "https://byjp.me/",
+      "contributions": [
+        "code",
+        "doc",
+        "example"
+      ]
+    },
+    {
+      "login": "EliCDavis",
+      "name": "Eli Davis",
+      "avatar_url": "https://avatars.githubusercontent.com/u/9094977?v=4",
+      "profile": "https://recolude.com/",
+      "contributions": [
+        "code",
+        "bug"
+      ]
+    }
+  ],
+  "contributorsPerLine": 7,
+  "linkToUsage": false
+}

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2021 Nicolas Lepage
+   Copyright 2025 Nicolas Lepage
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

README.md

@@ -6,9 +6,6 @@
   <a href="https://github.com/nlepage/go-wasm-http-server/blob/master/LICENSE" target="_blank">
     <img alt="License: Apache 2.0" src="https://img.shields.io/badge/License-Apache--2.0-yellow.svg" />
   </a>
-  <a href="https://twitter.com/njblepage" target="_blank">
-    <img alt="Twitter: njblepage" src="https://img.shields.io/twitter/follow/njblepage.svg?style=social" />
-  </a>
 </p>
 
 > Embed your Go HTTP handlers in a ServiceWorker (using [WebAssembly](https://mdn.io/WebAssembly/)) and emulate an HTTP server!
@@ -18,9 +15,10 @@
  - [Hello example](https://nlepage.github.io/go-wasm-http-server/hello) ([sources](https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello))
  - [Hello example with state](https://nlepage.github.io/go-wasm-http-server/hello-state) ([sources](https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello-state))
  - [Hello example with state and keepalive](https://nlepage.github.io/go-wasm-http-server/hello-state-keepalive) ([sources](https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello-state-keepalive))
+ - [Hello example with Server Sent Events](https://nlepage.github.io/go-wasm-http-server/hello-sse/) ([sources](https://nlepage.github.io/go-wasm-http-server/hello-sse/))
  - [😺 Catption generator example](https://nlepage.github.io/catption/wasm) ([sources](https://github.com/nlepage/catption/tree/wasm))
  - [Random password generator web server](https://nlepage.github.io/random-password-please/) ([sources](https://github.com/nlepage/random-password-please) forked from [jbarham/random-password-please](https://github.com/jbarham/random-password-please))
-
+ - [Server fallbacks, and compiling with TinyGo](https://nlepage.github.io/go-wasm-http-server/tinygo/) (runs locally; see [sources & readme](https://github.com/nlepage/go-wasm-http-server/tree/master/docs/tinygo#readme) for how to run this example)
 
 ## How?
 
@@ -39,6 +37,7 @@ The slides are available [here](https://nlepage.github.io/go-wasm-http-talk/).
 `go-wasm-http-server` requires you to build your Go application to WebAssembly, so you need to make sure your code is compatible:
 - no C bindings
 - no System dependencies such as file system or network (database server for example)
+- For smaller WASM blobs, your code may also benefit from being compatible with, and compiled by, [TinyGo](https://tinygo.org/docs/reference/lang-support/stdlib/). See the TinyGo specific details below.
 
 ## Usage
 
@@ -87,17 +86,37 @@ You may want to use build tags as shown above (or file name suffixes) in order t
 Then build your WebAssembly binary:
 
 ```sh
+# To compile with Go
 GOOS=js GOARCH=wasm go build -o server.wasm .
+
+# To compile with TinyGo, if your code is compatible
+GOOS=js GOARCH=wasm tinygo build -o server.wasm  .
 ```
 
 ### Step 2: Create ServiceWorker file
 
+First, check the version of Go/TinyGo you compiled your wasm with:
+
+```sh
+$ go version
+go version go1.23.4 darwin/arm64
+#          ^------^
+
+$ tinygo version
+tinygo version 0.35.0 darwin/arm64 (using go version go1.23.4 and LLVM version 18.1.2)
+#              ^----^
+```
+
 Create a ServiceWorker file with the following code:
 
 📄 `sw.js`
 ```js
-importScripts('https://cdn.jsdelivr.net/gh/golang/go@go1.18.4/misc/wasm/wasm_exec.js')
+// Note the 'go.1.23.4' below, that matches the version you just found:
-importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.0.5/sw.js')
+importScripts('https://cdn.jsdelivr.net/gh/golang/go@go1.23.4/misc/wasm/wasm_exec.js')
+// If you compiled with TinyGo then, similarly, use:
+importScripts('https://cdn.jsdelivr.net/gh/tinygo-org/tinygo@0.35.0/targets/wasm_exec.js')
+
+importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.2.1/sw.js')
 
 registerWasmHTTPListener('path/to/server.wasm')
 ```
@@ -163,15 +182,44 @@ URL string of the WebAssembly module, example: `"path/to/my-module.wasm"`.
 An optional object containing:
 
 - `base` (`string`): Base path of the server, relative to the ServiceWorker's scope.
+- `cacheName` (`string`): Name of the [Cache](https://developer.mozilla.org/en-US/docs/Web/API/Cache) to store the WebAssembly binary.
 - `args` (`string[]`): Arguments for the WebAssembly module.
+- `passthrough` (`(request: Request): boolean`): Optional callback to allow passing the request through to network.
 
-## Author
+## <abbr title="Frequently Asked Questions">FAQ</abbr> ❓
 
-👤 **Nicolas Lepage**
+### Are WebSockets supported?
 
-* Website: https://nicolas.lepage.dev/
+No, WebSockets aren’t and won’t be supported, because Service Workers cannot intercept websocket connections.
-* Twitter: [@njblepage](https://twitter.com/njblepage)
+
-* Github: [@nlepage](https://github.com/nlepage)
+However [Server Sent Events](https://developer.mozilla.org/en-US/docs/Web/API/Server-sent_events), which is an alternative to WebSockets, are supported, you can find the code for an example [here](https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello-sse) and the demo [here](https://nlepage.github.io/go-wasm-http-server/hello-sse/).
+
+### Is it compatible with TinyGo?
+
+Yes, an example and some specific information is available [here](https://github.com/nlepage/go-wasm-http-server/tree/master/docs/tinygo).
+
+## Contributors ✨
+
+Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/docs/en/emoji-key)):
+
+<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
+<!-- prettier-ignore-start -->
+<!-- markdownlint-disable -->
+<table>
+  <tbody>
+    <tr>
+      <td align="center" valign="top" width="14.28%"><a href="https://byjp.me/"><img src="https://avatars.githubusercontent.com/u/42999?v=4?s=100" width="100px;" alt="JP Hastings-Edrei"/><br /><sub><b>JP Hastings-Edrei</b></sub></a><br /><a href="https://github.com/nlepage/go-wasm-http-server/commits?author=jphastings" title="Code">💻</a> <a href="https://github.com/nlepage/go-wasm-http-server/commits?author=jphastings" title="Documentation">📖</a> <a href="#example-jphastings" title="Examples">💡</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="https://recolude.com/"><img src="https://avatars.githubusercontent.com/u/9094977?v=4?s=100" width="100px;" alt="Eli Davis"/><br /><sub><b>Eli Davis</b></sub></a><br /><a href="https://github.com/nlepage/go-wasm-http-server/commits?author=EliCDavis" title="Code">💻</a> <a href="https://github.com/nlepage/go-wasm-http-server/issues?q=author%3AEliCDavis" title="Bug reports">🐛</a></td>
+    </tr>
+  </tbody>
+</table>
+
+<!-- markdownlint-restore -->
+<!-- prettier-ignore-end -->
+
+<!-- ALL-CONTRIBUTORS-LIST:END -->
+
+This project follows the [all-contributors](https://github.com/all-contributors/all-contributors) specification. Contributions of any kind welcome!
 
 ## 🤝 Contributing
 
@@ -183,7 +231,7 @@ Give a ⭐️ if this project helped you!
 
 ## 📝 License
 
-Copyright © 2021 [Nicolas Lepage](https://github.com/nlepage).<br />
+Copyright © 2025 [Nicolas Lepage](https://github.com/nlepage).<br />
 This project is [Apache 2.0](https://github.com/nlepage/go-wasm-http-server/blob/master/LICENSE) licensed.
 
 ***

docs/hello-sse/sw.js

@@ -1,5 +1,5 @@
 importScripts('https://cdn.jsdelivr.net/gh/golang/go@go1.23.1/misc/wasm/wasm_exec.js')
-importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.0.5/sw.js')
+importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.2.1/sw.js')
 
 const wasm = 'api.wasm'
 

docs/hello-state/sw.js

@@ -1,5 +1,5 @@
 importScripts('https://cdn.jsdelivr.net/gh/golang/go@go1.23.1/misc/wasm/wasm_exec.js')
-importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.0.5/sw.js')
+importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.2.1/sw.js')
 
 const wasm = 'api.wasm'
 

docs/hello/sw.js

@@ -1,5 +1,5 @@
 importScripts('https://cdn.jsdelivr.net/gh/golang/go@go1.23.1/misc/wasm/wasm_exec.js')
-importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.0.5/sw.js')
+importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.2.1/sw.js')
 
 const wasm = 'api.wasm'
 

docs/index.html

@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<html lang="en">
+  <head>
+    <title>go-wasm-http-server examples</title>
+  </head>
+  <body>
+    <h1>go-wasm-http-server examples</h1>
+    <ul>
+      <li><a href="hello/">Hello example</a> (<a href="https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello">Sources</a>)</li>
+      <li><a href="hello-state/">Hello example with state</a> (<a href="https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello-state">Sources</a>)</li>
+      <li><a href="hello-state-keepalive/">Hello example with state and keepalive</a> (<a href="https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello-state-keepalive">Sources</a>)</li>
+      <li><a href="hello-sse/">Hello example with Server Sent Events</a> (<a href="https://github.com/nlepage/go-wasm-http-server/tree/master/docs/hello-sse">Sources</a>)</li>
+    </ul>
+    <p>See <a href="https://github.com/nlepage/go-wasm-http-server?tab=readme-ov-file#readme">README</a> for more information.</p>
+  </body>
+</html>

docs/tinygo/README.md

@@ -0,0 +1,42 @@
+# Compiling with TinyGo
+
+This example demonstrates that go-wasm-http-server can also be compiled with [TinyGo](https://www.tinygo.org), producing significantly smaller WASM blobs, though at the expense of [at least one known bug](https://github.com/tinygo-org/tinygo/issues/1140) and a [reduced standard library](https://tinygo.org/docs/reference/lang-support/stdlib/).
+
+This example also demonstrates how the same code can be used for both server-side execution, and client-side execution in WASM (providing support for clients that cannot interpret WASM).
+
+## Prerequisites
+
+You'll need a version of [TinyGo installed](https://tinygo.org/getting-started/install/).  (eg. `brew install tinygo-org/tools/tinygo`)
+
+You'll need to make sure the first line of `sw.js` here has the same tinygo version number as your TinyGo version (this was v0.35.0 at time of writing).
+
+## Build & run
+
+Compile the WASM blob with TinyGo (this has been done for you for this example):
+
+```bash
+GOOS=js GOARCH=wasm tinygo build -o api.wasm  .
+```
+
+Run the server (with Go, not TinyGo):
+
+```bash
+$ go run .
+Server starting on http://127.0.0.1:<port>
+```
+
+## Important notes
+
+You **must** use the TinyGo `wasm_exec.js`, specific to the version of TinyGo used to compile the WASM, in your `sw.js`. For example, if using the JSDelivr CDN:
+
+```js
+importScripts('https://cdn.jsdelivr.net/gh/tinygo-org/tinygo@0.35.0/targets/wasm_exec.js')
+```
+
+Note that the `0.35.0` within the path matches the TinyGo version used:
+
+```sh
+$ tinygo version
+tinygo version 0.35.0 darwin/arm64 (using go version go1.23.4 and LLVM version 18.1.2)
+#              ^----^
+```

docs/tinygo/handlers.go

@@ -0,0 +1,19 @@
+package main
+
+import (
+	"encoding/json"
+	"net/http"
+	"runtime"
+)
+
+func goRuntimeHandler(res http.ResponseWriter, req *http.Request) {
+	res.Header().Add("Content-Type", "application/json")
+	if err := json.NewEncoder(res).Encode(map[string]string{
+		"os":       runtime.GOOS,
+		"arch":     runtime.GOARCH,
+		"compiler": runtime.Compiler,
+		"version":  runtime.Version(),
+	}); err != nil {
+		panic(err)
+	}
+}

docs/tinygo/index.html

@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>go-wasm-http-server tinygo demo</title>
+    <script>
+      const sw = navigator.serviceWorker
+
+      function attachServiceWorker() {
+        sw.register('sw.js')
+          .then(() => {
+            document.getElementById('wasm-status').innerText = "⚡️ Loaded - Will execute WASM locally"
+          })
+          .catch((err) => {
+            document.getElementById('wasm-status').innerText = "🛑 Error loading service worker — Check console"
+            console.error(err)
+          })
+      }
+
+      async function makeQuery() {
+        const res = await fetch('api/tiny', {
+          method: 'POST',
+          headers: {
+            'Content-Type': 'application/json'
+          }
+        })
+
+        document.getElementById('output').innerText = await res.text()
+      }
+    </script>
+  </head>
+  <body>
+    <p>This example demonstrates that go-wasm-http-server can be compiled with <a href="https://www.tinygo.org">TinyGo</em>, producing significantly smaller WASM blobs, at the expense of <a href="https://github.com/tinygo-org/tinygo/issues/1140">at least one known bug</a>, and a <a href="https://tinygo.org/docs/reference/lang-support/stdlib/">reduced standard library</a>.</p>
+    <dl><dt>WASM HTTP Service Worker:</dt><dd id="wasm-status">☁️ Not loaded — will call server</dd></dl>
+    
+    <ol>
+      <li><button onclick="makeQuery()">Call API</button></li>
+      <li><button onclick="attachServiceWorker()">Attach the service worker</button></li>
+      <li><span>Call the API again (Step 1)</span></li>
+    </ol>
+
+    <h3>Response:</h3>
+    <pre id="output"></pre>
+  </body>
+</html>

docs/tinygo/server.go

@@ -0,0 +1,34 @@
+//go:build !wasm
+// +build !wasm
+
+package main
+
+import (
+	"embed"
+	"fmt"
+	"log"
+	"net"
+	"net/http"
+)
+
+//go:embed *.html *.js *.wasm
+var thisDir embed.FS
+
+func main() {
+	// Serve all files in this directory statically
+	http.Handle("/", http.FileServer(http.FS(thisDir)))
+
+	// Note that this needs to be mounted at /api/tiny, rather than just /tiny (like in wasm.go)
+	// because the service worker mounts the WASM server at /api (at the end of sw.js)
+	http.HandleFunc("/api/tiny", goRuntimeHandler)
+
+	// Pick any available port. Note that ServiceWorkers _require_ localhost for non-SSL serving (so other LAN/WAN IPs will prevent the service worker from loading)
+	listener, err := net.Listen("tcp", ":0")
+	if err != nil {
+		log.Fatalf("Unable to claim a port to start server on: %v", err)
+	}
+
+	// Share the port being used & start
+	fmt.Printf("Server starting on http://127.0.0.1:%d\n", listener.Addr().(*net.TCPAddr).Port)
+	panic(http.Serve(listener, nil))
+}

docs/tinygo/sw.js

@@ -0,0 +1,14 @@
+importScripts('https://cdn.jsdelivr.net/gh/tinygo-org/tinygo@0.35.0/targets/wasm_exec.js')
+importScripts('https://cdn.jsdelivr.net/gh/nlepage/go-wasm-http-server@v2.2.1/sw.js')
+
+const wasm = 'api.wasm'
+
+addEventListener('install', (event) => {
+  event.waitUntil(caches.open('examples').then((cache) => cache.add(wasm)))
+})
+
+addEventListener('activate', (event) => {
+  event.waitUntil(clients.claim())
+})
+
+registerWasmHTTPListener(wasm, { base: 'api' })

docs/tinygo/wasm.go

@@ -0,0 +1,18 @@
+//go:build wasm
+// +build wasm
+
+package main
+
+import (
+	"net/http"
+
+	wasmhttp "github.com/nlepage/go-wasm-http-server/v2"
+)
+
+func main() {
+	http.HandleFunc("/tiny", goRuntimeHandler)
+
+	wasmhttp.Serve(nil)
+
+	select {}
+}

go.sum

@@ -4,3 +4,6 @@ github.com/nlepage/go-js-promise v1.0.0 h1:K7OmJ3+0BgWJ2LfXchg2sI6RDr7AW/KWR8182
 github.com/nlepage/go-js-promise v1.0.0/go.mod h1:bdOP0wObXu34euibyK39K1hoBCtlgTKXGc56AGflaRo=
 github.com/tmaxmax/go-sse v0.8.0 h1:pPpTgyyi1r7vG2o6icebnpGEh3ebcnBXqDWkb7aTofs=
 github.com/tmaxmax/go-sse v0.8.0/go.mod h1:HLoxqxdH+7oSUItjtnpxjzJedfr/+Rrm/dNWBcTxJFM=
+golang.org/x/mod v0.7.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
+golang.org/x/sys v0.4.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/tools v0.5.0/go.mod h1:N+Kgy78s5I24c24dU8OfWNEotWjutIs8SnJvn5IDq+k=

internal/readablestream/reader.go

@@ -14,7 +14,7 @@ type Reader struct {
 	off   int
 }
 
-var _ io.Reader = (*Reader)(nil)
+var _ io.ReadCloser = (*Reader)(nil)
 
 func NewReader(r safejs.Value) *Reader {
 	return &Reader{
@@ -83,3 +83,14 @@ func (r *Reader) Read(p []byte) (int, error) {
 
 	return n, nil
 }
+
+func (r *Reader) Close() error {
+	p, err := r.value.Call("cancel")
+	if err != nil {
+		return err
+	}
+
+	_, err = promise.Await(safejs.Unsafe(p))
+
+	return err
+}

package-lock.json

@@ -0,0 +1,787 @@
+{
+  "name": "go-wasm-http-server",
+  "version": "0.1.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "go-wasm-http-server",
+      "version": "0.1.0",
+      "license": "Apache-2.0",
+      "devDependencies": {
+        "all-contributors-cli": "^6.26.1"
+      }
+    },
+    "node_modules/@babel/runtime": {
+      "version": "7.26.0",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.26.0.tgz",
+      "integrity": "sha512-FDSOghenHTiToteC/QRlv2q3DhPZ/oOXTBoirfWNx1Cx3TMVcGWQtMMmQcSvb/JjpNeGzx8Pq/b4fKEJuWm1sw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "regenerator-runtime": "^0.14.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
+    "node_modules/all-contributors-cli": {
+      "version": "6.26.1",
+      "resolved": "https://registry.npmjs.org/all-contributors-cli/-/all-contributors-cli-6.26.1.tgz",
+      "integrity": "sha512-Ymgo3FJACRBEd1eE653FD1J/+uD0kqpUNYfr9zNC1Qby0LgbhDBzB3EF6uvkAbYpycStkk41J+0oo37Lc02yEw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@babel/runtime": "^7.7.6",
+        "async": "^3.1.0",
+        "chalk": "^4.0.0",
+        "didyoumean": "^1.2.1",
+        "inquirer": "^7.3.3",
+        "json-fixer": "^1.6.8",
+        "lodash": "^4.11.2",
+        "node-fetch": "^2.6.0",
+        "pify": "^5.0.0",
+        "yargs": "^15.0.1"
+      },
+      "bin": {
+        "all-contributors": "dist/cli.js"
+      },
+      "engines": {
+        "node": ">=4"
+      },
+      "optionalDependencies": {
+        "prettier": "^2"
+      }
+    },
+    "node_modules/ansi-escapes": {
+      "version": "4.3.2",
+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-4.3.2.tgz",
+      "integrity": "sha512-gKXj5ALrKWQLsYG9jlTRmR/xKluxHV+Z9QEwNIgCfM1/uwPMCuzVVnh5mwTd+OuBZcwSIMbqssNWRm1lE51QaQ==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "type-fest": "^0.21.3"
+      },
+      "engines": {
+        "node": ">=8"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/ansi-regex": {
+      "version": "5.0.1",
+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-5.0.1.tgz",
+      "integrity": "sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
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+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/require-main-filename": {
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+      "license": "ISC"
+    },
+    "node_modules/restore-cursor": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-3.1.0.tgz",
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+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "onetime": "^5.1.0",
+        "signal-exit": "^3.0.2"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/run-async": {
+      "version": "2.4.1",
+      "resolved": "https://registry.npmjs.org/run-async/-/run-async-2.4.1.tgz",
+      "integrity": "sha512-tvVnVv01b8c1RrA6Ep7JkStj85Guv/YrMcwqYQnwjsAS2cTmmPGBBjAjpCW7RrSodNSoE2/qg9O4bceNvUuDgQ==",
+      "dev": true,
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.12.0"
+      }
+    },
+    "node_modules/rxjs": {
+      "version": "6.6.7",
+      "resolved": "https://registry.npmjs.org/rxjs/-/rxjs-6.6.7.tgz",
+      "integrity": "sha512-hTdwr+7yYNIT5n4AMYp85KA6yw2Va0FLa3Rguvbpa4W3I5xynaBZo41cM3XM+4Q6fRMj3sBYIR1VAmZMXYJvRQ==",
+      "dev": true,
+      "license": "Apache-2.0",
+      "dependencies": {
+        "tslib": "^1.9.0"
+      },
+      "engines": {
+        "npm": ">=2.0.0"
+      }
+    },
+    "node_modules/safer-buffer": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/set-blocking": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
+      "integrity": "sha512-KiKBS8AnWGEyLzofFfmvKwpdPzqiy16LvQfK3yv/fVH7Bj13/wl3JSR1J+rfgRE9q7xUJK4qvgS8raSOeLUehw==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/signal-exit": {
+      "version": "3.0.7",
+      "resolved": "https://registry.npmjs.org/signal-exit/-/signal-exit-3.0.7.tgz",
+      "integrity": "sha512-wnD2ZE+l+SPC/uoS0vXeE9L1+0wuaMqKlfz9AMUo38JsyLSBWSFcHR1Rri62LZc12vLr1gb3jl7iwQhgwpAbGQ==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/string-width": {
+      "version": "4.2.3",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-4.2.3.tgz",
+      "integrity": "sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "emoji-regex": "^8.0.0",
+        "is-fullwidth-code-point": "^3.0.0",
+        "strip-ansi": "^6.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/strip-ansi": {
+      "version": "6.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-6.0.1.tgz",
+      "integrity": "sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-regex": "^5.0.1"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/supports-color": {
+      "version": "7.2.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-7.2.0.tgz",
+      "integrity": "sha512-qpCAvRl9stuOHveKsn7HncJRvv501qIacKzQlO/+Lwxc9+0q2wLyv4Dfvt80/DPn2pqOBsJdDiogXGR9+OvwRw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "has-flag": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/through": {
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "integrity": "sha512-w89qg7PI8wAdvX60bMDP+bFoD5Dvhm9oLheFp5O4a2QF0cSBGsBX4qZmadPMvVqlLJBBci+WqGGOAPvcDeNSVg==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tmp": {
+      "version": "0.0.33",
+      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.0.33.tgz",
+      "integrity": "sha512-jRCJlojKnZ3addtTOjdIqoRuPEKBvNXcGYqzO6zWZX8KfKEpnGY5jfggJQ3EjKuu8D4bJRr0y+cYJFmYbImXGw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "os-tmpdir": "~1.0.2"
+      },
+      "engines": {
+        "node": ">=0.6.0"
+      }
+    },
+    "node_modules/tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw==",
+      "dev": true,
+      "license": "MIT"
+    },
+    "node_modules/tslib": {
+      "version": "1.14.1",
+      "resolved": "https://registry.npmjs.org/tslib/-/tslib-1.14.1.tgz",
+      "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
+      "dev": true,
+      "license": "0BSD"
+    },
+    "node_modules/type-fest": {
+      "version": "0.21.3",
+      "resolved": "https://registry.npmjs.org/type-fest/-/type-fest-0.21.3.tgz",
+      "integrity": "sha512-t0rzBq87m3fVcduHDUFhKmyyX+9eo6WQjZvf51Ea/M0Q7+T374Jp1aUiyUl0GKxp8M/OETVHSDvmkyPgvX+X2w==",
+      "dev": true,
+      "license": "(MIT OR CC0-1.0)",
+      "engines": {
+        "node": ">=10"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ==",
+      "dev": true,
+      "license": "BSD-2-Clause"
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
+    "node_modules/which-module": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.1.tgz",
+      "integrity": "sha512-iBdZ57RDvnOR9AGBhML2vFZf7h8vmBjhoaZqODJBFWHVtKkDmKuHai3cx5PgVMrX5YDNp27AofYbAwctSS+vhQ==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/wrap-ansi": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
+      "integrity": "sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.0.0",
+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/y18n": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.3.tgz",
+      "integrity": "sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==",
+      "dev": true,
+      "license": "ISC"
+    },
+    "node_modules/yargs": {
+      "version": "15.4.1",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.4.1.tgz",
+      "integrity": "sha512-aePbxDmcYW++PaqBsJ+HYUFwCdv4LVvdnhBy78E57PIor8/OVvhMrADFFEDh8DHDFRv/O9i3lPhsENjO7QX0+A==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "cliui": "^6.0.0",
+        "decamelize": "^1.2.0",
+        "find-up": "^4.1.0",
+        "get-caller-file": "^2.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^4.2.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^18.1.2"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/yargs-parser": {
+      "version": "18.1.3",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
+      "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==",
+      "dev": true,
+      "license": "ISC",
+      "dependencies": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    }
+  }
+}

package.json

@@ -5,5 +5,8 @@
   "main": "index.js",
   "repository": "https://github.com/nlepage/go-wasm-http-server",
   "author": "Nicolas Lepage <19571875+nlepage@users.noreply.github.com>",
-  "license": "Apache-2.0"
+  "license": "Apache-2.0",
+  "devDependencies": {
+    "all-contributors-cli": "^6.26.1"
+  }
 }

request.go

@@ -3,7 +3,7 @@ package wasmhttp
 import (
 	"io"
 	"net/http"
-	"net/http/httptest"
+	"net/url"
 	"syscall/js"
 
 	promise "github.com/nlepage/go-js-promise"
@@ -20,7 +20,11 @@ func Request(uvalue js.Value) (*http.Request, error) {
 		return nil, err
 	}
 
-	url, err := value.GetString("url")
+	rawURL, err := value.GetString("url")
+	if err != nil {
+		return nil, err
+	}
+	u, err := url.Parse(rawURL)
 	if err != nil {
 		return nil, err
 	}
@@ -30,7 +34,7 @@ func Request(uvalue js.Value) (*http.Request, error) {
 		return nil, err
 	}
 
-	var bodyReader io.Reader
+	var bodyReader io.ReadCloser
 
 	if !body.IsNull() {
 		// WORKAROUND: Firefox does not have request.body ReadableStream
@@ -59,11 +63,15 @@ func Request(uvalue js.Value) (*http.Request, error) {
 		bodyReader = readablestream.NewReader(r)
 	}
 
-	req := httptest.NewRequest(
+	req := &http.Request{
-		method,
+		Method:     method,
-		url,
+		URL:        u,
-		bodyReader,
+		Body:       bodyReader,
-	)
+		Header:     make(http.Header),
+		Proto:      "HTTP/1.1",
+		ProtoMajor: 1,
+		ProtoMinor: 1,
+	}
 
 	headers, err := value.Get("headers")
 	if err != nil {

response.go

@@ -123,6 +123,9 @@ func (r *response) Flush() {
 
 // Close implements [io.Closer]
 func (r *response) Close() error {
+	if !r.wroteHeader {
+		r.WriteHeader(200)
+	}
 	if err := r.body.Flush(); err != nil {
 		return err
 	}

sw.js

@@ -1,4 +1,4 @@
-function registerWasmHTTPListener(wasm, { base, cacheName, args = [] } = {}) {
+function registerWasmHTTPListener(wasm, { base, cacheName, passthrough, args = [] } = {}) {
   let path = new URL(registration.scope).pathname
   if (base && base !== '') path = `${trimEnd(path, '/')}/${trimStart(base, '/')}`
 
@@ -17,6 +17,11 @@ function registerWasmHTTPListener(wasm, { base, cacheName, args = [] } = {}) {
   WebAssembly.instantiateStreaming(source, go.importObject).then(({ instance }) => go.run(instance))
 
   addEventListener('fetch', e => {
+    if (passthrough?.(e.request)) {
+        e.respondWith(fetch(e.request))
+        return;
+    }
+
     const { pathname } = new URL(e.request.url)
     if (!pathname.startsWith(path)) return