diff --git a/Rules.mk b/Rules.mk
index 70ea69e06..0b0f8040a 100644
--- a/Rules.mk
+++ b/Rules.mk
@@ -53,6 +53,9 @@ include $(dir)/Rules.mk
dir := filestore/pb
include $(dir)/Rules.mk
+dir := misc/wasm
+include $(dir)/Rules.mk
+
# -------------------- #
# universal rules #
diff --git a/misc/wasm/.gitignore b/misc/wasm/.gitignore
new file mode 100644
index 000000000..827a970c8
--- /dev/null
+++ b/misc/wasm/.gitignore
@@ -0,0 +1 @@
+ipfs.wasm
diff --git a/misc/wasm/Rules.mk b/misc/wasm/Rules.mk
new file mode 100644
index 000000000..eba53e8d2
--- /dev/null
+++ b/misc/wasm/Rules.mk
@@ -0,0 +1,17 @@
+include mk/header.mk
+
+# TODO: target disabling all incompatible plugins
+
+$(d)/ipfs.wasm:
+ GOOS=js GOARCH=wasm $(GOCC) build -tags="nofuse purego" -ldflags="-X "github.com/ipfs/go-ipfs".CurrentCommit=47e9466ac" -o "$@" "github.com/ipfs/go-ipfs/misc/wasm"
+
+.PHONY: $(d)/ipfs.wasm
+
+$(d)/serve: $(d)/ipfs.wasm
+ go get github.com/shurcooL/goexec
+ @echo 'Listening on http://127.0.0.1:8000'
+ @(cd $(@D) && goexec 'http.ListenAndServe("127.0.0.1:8000", http.FileServer(http.Dir(".")))')
+
+.PHONY: $(d)/serve
+
+include mk/footer.mk
\ No newline at end of file
diff --git a/misc/wasm/index.html b/misc/wasm/index.html
new file mode 100644
index 000000000..4c8209389
--- /dev/null
+++ b/misc/wasm/index.html
@@ -0,0 +1,52 @@
+
+
+
+
+
+
+ Go wasm
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/misc/wasm/wasm_exec.js b/misc/wasm/wasm_exec.js
new file mode 100644
index 000000000..94b9552c5
--- /dev/null
+++ b/misc/wasm/wasm_exec.js
@@ -0,0 +1,437 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+(() => {
+ // Map web browser API and Node.js API to a single common API (preferring web standards over Node.js API).
+ const isNodeJS = typeof process !== "undefined";
+ if (isNodeJS) {
+ global.require = require;
+ global.fs = require("fs");
+
+ const nodeCrypto = require("crypto");
+ global.crypto = {
+ getRandomValues(b) {
+ nodeCrypto.randomFillSync(b);
+ },
+ };
+
+ global.performance = {
+ now() {
+ const [sec, nsec] = process.hrtime();
+ return sec * 1000 + nsec / 1000000;
+ },
+ };
+
+ const util = require("util");
+ global.TextEncoder = util.TextEncoder;
+ global.TextDecoder = util.TextDecoder;
+ } else {
+ if (typeof window !== "undefined") {
+ window.global = window;
+ } else if (typeof self !== "undefined") {
+ self.global = self;
+ } else {
+ throw new Error("cannot export Go (neither window nor self is defined)");
+ }
+
+ let outputBuf = "";
+ global.fs = {
+ constants: { O_WRONLY: -1, O_RDWR: -1, O_CREAT: -1, O_TRUNC: -1, O_APPEND: -1, O_EXCL: -1 }, // unused
+ writeSync(fd, buf) {
+ outputBuf += decoder.decode(buf);
+ const nl = outputBuf.lastIndexOf("\n");
+ if (nl != -1) {
+ console.log(outputBuf.substr(0, nl));
+ outputBuf = outputBuf.substr(nl + 1);
+ }
+ return buf.length;
+ },
+ openSync(path, flags, mode) {
+ const err = new Error("not implemented");
+ err.code = "ENOSYS";
+ throw err;
+ },
+ };
+ }
+
+ const encoder = new TextEncoder("utf-8");
+ const decoder = new TextDecoder("utf-8");
+
+ global.Go = class {
+ constructor() {
+ this.argv = ["js"];
+ this.env = {};
+ this.exit = (code) => {
+ if (code !== 0) {
+ console.warn("exit code:", code);
+ }
+ };
+ this._callbackTimeouts = new Map();
+ this._nextCallbackTimeoutID = 1;
+
+ const mem = () => {
+ // The buffer may change when requesting more memory.
+ return new DataView(this._inst.exports.mem.buffer);
+ }
+
+ const setInt64 = (addr, v) => {
+ mem().setUint32(addr + 0, v, true);
+ mem().setUint32(addr + 4, Math.floor(v / 4294967296), true);
+ }
+
+ const getInt64 = (addr) => {
+ const low = mem().getUint32(addr + 0, true);
+ const high = mem().getInt32(addr + 4, true);
+ return low + high * 4294967296;
+ }
+
+ const loadValue = (addr) => {
+ const f = mem().getFloat64(addr, true);
+ if (!isNaN(f)) {
+ return f;
+ }
+
+ const id = mem().getUint32(addr, true);
+ return this._values[id];
+ }
+
+ const storeValue = (addr, v) => {
+ const nanHead = 0x7FF80000;
+
+ if (typeof v === "number") {
+ if (isNaN(v)) {
+ mem().setUint32(addr + 4, nanHead, true);
+ mem().setUint32(addr, 0, true);
+ return;
+ }
+ mem().setFloat64(addr, v, true);
+ return;
+ }
+
+ switch (v) {
+ case undefined:
+ mem().setUint32(addr + 4, nanHead, true);
+ mem().setUint32(addr, 1, true);
+ return;
+ case null:
+ mem().setUint32(addr + 4, nanHead, true);
+ mem().setUint32(addr, 2, true);
+ return;
+ case true:
+ mem().setUint32(addr + 4, nanHead, true);
+ mem().setUint32(addr, 3, true);
+ return;
+ case false:
+ mem().setUint32(addr + 4, nanHead, true);
+ mem().setUint32(addr, 4, true);
+ return;
+ }
+
+ let ref = this._refs.get(v);
+ if (ref === undefined) {
+ ref = this._values.length;
+ this._values.push(v);
+ this._refs.set(v, ref);
+ }
+ let typeFlag = 0;
+ switch (typeof v) {
+ case "string":
+ typeFlag = 1;
+ break;
+ case "symbol":
+ typeFlag = 2;
+ break;
+ case "function":
+ typeFlag = 3;
+ break;
+ }
+ mem().setUint32(addr + 4, nanHead | typeFlag, true);
+ mem().setUint32(addr, ref, true);
+ }
+
+ const loadSlice = (addr) => {
+ const array = getInt64(addr + 0);
+ const len = getInt64(addr + 8);
+ return new Uint8Array(this._inst.exports.mem.buffer, array, len);
+ }
+
+ const loadSliceOfValues = (addr) => {
+ const array = getInt64(addr + 0);
+ const len = getInt64(addr + 8);
+ const a = new Array(len);
+ for (let i = 0; i < len; i++) {
+ a[i] = loadValue(array + i * 8);
+ }
+ return a;
+ }
+
+ const loadString = (addr) => {
+ const saddr = getInt64(addr + 0);
+ const len = getInt64(addr + 8);
+ return decoder.decode(new DataView(this._inst.exports.mem.buffer, saddr, len));
+ }
+
+ const timeOrigin = Date.now() - performance.now();
+ this.importObject = {
+ go: {
+ // func wasmExit(code int32)
+ "runtime.wasmExit": (sp) => {
+ const code = mem().getInt32(sp + 8, true);
+ this.exited = true;
+ delete this._inst;
+ delete this._values;
+ delete this._refs;
+ this.exit(code);
+ },
+
+ // func wasmWrite(fd uintptr, p unsafe.Pointer, n int32)
+ "runtime.wasmWrite": (sp) => {
+ const fd = getInt64(sp + 8);
+ const p = getInt64(sp + 16);
+ const n = mem().getInt32(sp + 24, true);
+ fs.writeSync(fd, new Uint8Array(this._inst.exports.mem.buffer, p, n));
+ },
+
+ // func nanotime() int64
+ "runtime.nanotime": (sp) => {
+ setInt64(sp + 8, (timeOrigin + performance.now()) * 1000000);
+ },
+
+ // func walltime() (sec int64, nsec int32)
+ "runtime.walltime": (sp) => {
+ const msec = (new Date).getTime();
+ setInt64(sp + 8, msec / 1000);
+ mem().setInt32(sp + 16, (msec % 1000) * 1000000, true);
+ },
+
+ // func scheduleCallback(delay int64) int32
+ "runtime.scheduleCallback": (sp) => {
+ const id = this._nextCallbackTimeoutID;
+ this._nextCallbackTimeoutID++;
+ this._callbackTimeouts.set(id, setTimeout(
+ () => { this._resolveCallbackPromise(); },
+ getInt64(sp + 8) + 1, // setTimeout has been seen to fire up to 1 millisecond early
+ ));
+ mem().setInt32(sp + 16, id, true);
+ },
+
+ // func clearScheduledCallback(id int32)
+ "runtime.clearScheduledCallback": (sp) => {
+ const id = mem().getInt32(sp + 8, true);
+ clearTimeout(this._callbackTimeouts.get(id));
+ this._callbackTimeouts.delete(id);
+ },
+
+ // func getRandomData(r []byte)
+ "runtime.getRandomData": (sp) => {
+ crypto.getRandomValues(loadSlice(sp + 8));
+ },
+
+ // func stringVal(value string) ref
+ "syscall/js.stringVal": (sp) => {
+ storeValue(sp + 24, loadString(sp + 8));
+ },
+
+ // func valueGet(v ref, p string) ref
+ "syscall/js.valueGet": (sp) => {
+ storeValue(sp + 32, Reflect.get(loadValue(sp + 8), loadString(sp + 16)));
+ },
+
+ // func valueSet(v ref, p string, x ref)
+ "syscall/js.valueSet": (sp) => {
+ Reflect.set(loadValue(sp + 8), loadString(sp + 16), loadValue(sp + 32));
+ },
+
+ // func valueIndex(v ref, i int) ref
+ "syscall/js.valueIndex": (sp) => {
+ storeValue(sp + 24, Reflect.get(loadValue(sp + 8), getInt64(sp + 16)));
+ },
+
+ // valueSetIndex(v ref, i int, x ref)
+ "syscall/js.valueSetIndex": (sp) => {
+ Reflect.set(loadValue(sp + 8), getInt64(sp + 16), loadValue(sp + 24));
+ },
+
+ // func valueCall(v ref, m string, args []ref) (ref, bool)
+ "syscall/js.valueCall": (sp) => {
+ try {
+ const v = loadValue(sp + 8);
+ const m = Reflect.get(v, loadString(sp + 16));
+ const args = loadSliceOfValues(sp + 32);
+ storeValue(sp + 56, Reflect.apply(m, v, args));
+ mem().setUint8(sp + 64, 1);
+ } catch (err) {
+ storeValue(sp + 56, err);
+ mem().setUint8(sp + 64, 0);
+ }
+ },
+
+ // func valueInvoke(v ref, args []ref) (ref, bool)
+ "syscall/js.valueInvoke": (sp) => {
+ try {
+ const v = loadValue(sp + 8);
+ const args = loadSliceOfValues(sp + 16);
+ storeValue(sp + 40, Reflect.apply(v, undefined, args));
+ mem().setUint8(sp + 48, 1);
+ } catch (err) {
+ storeValue(sp + 40, err);
+ mem().setUint8(sp + 48, 0);
+ }
+ },
+
+ // func valueNew(v ref, args []ref) (ref, bool)
+ "syscall/js.valueNew": (sp) => {
+ try {
+ const v = loadValue(sp + 8);
+ const args = loadSliceOfValues(sp + 16);
+ storeValue(sp + 40, Reflect.construct(v, args));
+ mem().setUint8(sp + 48, 1);
+ } catch (err) {
+ storeValue(sp + 40, err);
+ mem().setUint8(sp + 48, 0);
+ }
+ },
+
+ // func valueLength(v ref) int
+ "syscall/js.valueLength": (sp) => {
+ setInt64(sp + 16, parseInt(loadValue(sp + 8).length));
+ },
+
+ // valuePrepareString(v ref) (ref, int)
+ "syscall/js.valuePrepareString": (sp) => {
+ const str = encoder.encode(String(loadValue(sp + 8)));
+ storeValue(sp + 16, str);
+ setInt64(sp + 24, str.length);
+ },
+
+ // valueLoadString(v ref, b []byte)
+ "syscall/js.valueLoadString": (sp) => {
+ const str = loadValue(sp + 8);
+ loadSlice(sp + 16).set(str);
+ },
+
+ // func valueInstanceOf(v ref, t ref) bool
+ "syscall/js.valueInstanceOf": (sp) => {
+ mem().setUint8(sp + 24, loadValue(sp + 8) instanceof loadValue(sp + 16));
+ },
+
+ "debug": (value) => {
+ console.log(value);
+ },
+ }
+ };
+ }
+
+ async run(instance) {
+ this._inst = instance;
+ this._values = [ // TODO: garbage collection
+ NaN,
+ undefined,
+ null,
+ true,
+ false,
+ global,
+ this._inst.exports.mem,
+ this,
+ ];
+ this._refs = new Map();
+ this._callbackShutdown = false;
+ this.exited = false;
+
+ const mem = new DataView(this._inst.exports.mem.buffer)
+
+ // Pass command line arguments and environment variables to WebAssembly by writing them to the linear memory.
+ let offset = 4096;
+
+ const strPtr = (str) => {
+ let ptr = offset;
+ new Uint8Array(mem.buffer, offset, str.length + 1).set(encoder.encode(str + "\0"));
+ offset += str.length + (8 - (str.length % 8));
+ return ptr;
+ };
+
+ const argc = this.argv.length;
+
+ const argvPtrs = [];
+ this.argv.forEach((arg) => {
+ argvPtrs.push(strPtr(arg));
+ });
+
+ const keys = Object.keys(this.env).sort();
+ argvPtrs.push(keys.length);
+ keys.forEach((key) => {
+ argvPtrs.push(strPtr(`${key}=${this.env[key]}`));
+ });
+
+ const argv = offset;
+ argvPtrs.forEach((ptr) => {
+ mem.setUint32(offset, ptr, true);
+ mem.setUint32(offset + 4, 0, true);
+ offset += 8;
+ });
+
+ while (true) {
+ const callbackPromise = new Promise((resolve) => {
+ this._resolveCallbackPromise = () => {
+ if (this.exited) {
+ throw new Error("bad callback: Go program has already exited");
+ }
+ setTimeout(resolve, 0); // make sure it is asynchronous
+ };
+ });
+ this._inst.exports.run(argc, argv);
+ if (this.exited) {
+ break;
+ }
+ await callbackPromise;
+ }
+ }
+
+ static _makeCallbackHelper(id, pendingCallbacks, go) {
+ return function() {
+ pendingCallbacks.push({ id: id, args: arguments });
+ go._resolveCallbackPromise();
+ };
+ }
+
+ static _makeEventCallbackHelper(preventDefault, stopPropagation, stopImmediatePropagation, fn) {
+ return function(event) {
+ if (preventDefault) {
+ event.preventDefault();
+ }
+ if (stopPropagation) {
+ event.stopPropagation();
+ }
+ if (stopImmediatePropagation) {
+ event.stopImmediatePropagation();
+ }
+ fn(event);
+ };
+ }
+ }
+
+ if (isNodeJS) {
+ if (process.argv.length < 3) {
+ process.stderr.write("usage: go_js_wasm_exec [wasm binary] [arguments]\n");
+ process.exit(1);
+ }
+
+ const go = new Go();
+ go.argv = process.argv.slice(2);
+ go.env = process.env;
+ go.exit = process.exit;
+ WebAssembly.instantiate(fs.readFileSync(process.argv[2]), go.importObject).then((result) => {
+ process.on("exit", (code) => { // Node.js exits if no callback is pending
+ if (code === 0 && !go.exited) {
+ // deadlock, make Go print error and stack traces
+ go._callbackShutdown = true;
+ go._inst.exports.run();
+ }
+ });
+ return go.run(result.instance);
+ }).catch((err) => {
+ throw err;
+ });
+ }
+})();
diff --git a/misc/wasm/wrapper.go b/misc/wasm/wrapper.go
new file mode 100644
index 000000000..8eece805d
--- /dev/null
+++ b/misc/wasm/wrapper.go
@@ -0,0 +1,141 @@
+package main
+
+import (
+ "context"
+ "encoding/base64"
+ "fmt"
+ "github.com/ipfs/go-ipfs/core"
+ "github.com/ipfs/go-ipfs/core/coreapi"
+ "github.com/ipfs/go-ipfs/keystore"
+ "github.com/ipfs/go-ipfs/repo"
+ "syscall/js"
+ "time"
+
+ ci "gx/ipfs/QmNiJiXwWE3kRhZrC5ej3kSjWHm337pYfhjLGSCDNKJP2s/go-libp2p-crypto"
+ "gx/ipfs/QmRBaUEQEeFWywfrZJ64QgsmvcqgLSK3VbvGMR2NM2Edpf/go-libp2p"
+ "gx/ipfs/QmXWZCd8jfaHmt4UDSnjKmGcrQMw95bDGWqEeVLVJjoANX/go-ipfs-files"
+ "gx/ipfs/QmY5Grm8pJdiSSVsYxx4uNRgweY72EmYwuSDbRnbFok3iY/go-libp2p-peer"
+ pstore "gx/ipfs/QmZ9zH2FnLcxv1xyzFeUpDUeo55xEhZQHgveZijcxr7TLj/go-libp2p-peerstore"
+ "gx/ipfs/QmcZfkbgwwwH5ZLTQRHkSQBDiDqd3skY2eU6MZRgWuXcse/go-ipfs-config"
+ logging "gx/ipfs/QmcuXC5cxs79ro2cUuHs4HQ2bkDLJUYokwL8aivcX6HW3C/go-log"
+ "gx/ipfs/Qmf4xQhNomPNhrtZc67qSnfJSjxjXs9LWvknJtSXwimPrM/go-datastore"
+ syncds "gx/ipfs/Qmf4xQhNomPNhrtZc67qSnfJSjxjXs9LWvknJtSXwimPrM/go-datastore/sync"
+ p2phost "gx/ipfs/QmfD51tKgJiTMnW9JEiDiPwsCY4mqUoxkhKhBfyW12spTC/go-libp2p-host"
+)
+
+func constructPeerHost(ctx context.Context, id peer.ID, ps pstore.Peerstore, options ...libp2p.Option) (p2phost.Host, error) {
+ pkey := ps.PrivKey(id)
+ if pkey == nil {
+ return nil, fmt.Errorf("missing private key for node ID: %s", id.Pretty())
+ }
+ options = append(options,
+ libp2p.Identity(pkey),
+ libp2p.NoTransports,
+ libp2p.Transport(NewJsWs),
+ libp2p.Peerstore(ps),
+ libp2p.EnableAutoRelay(),
+ libp2p.EnableRelay())
+ return libp2p.New(ctx, options...)
+}
+
+func main() {
+ logging.SetDebugLogging()
+ ctx := context.Background()
+
+ sk, pk, err := ci.GenerateKeyPair(ci.RSA, 2048)
+ if err != nil {
+ panic(err)
+ }
+
+ id, err := peer.IDFromPublicKey(pk)
+ if err != nil {
+ panic(err)
+ }
+
+ kbytes, err := sk.Bytes()
+ if err != nil {
+ panic(err)
+ }
+
+ ident := config.Identity{
+ PeerID: id.Pretty(),
+ PrivKey: base64.StdEncoding.EncodeToString(kbytes),
+ }
+
+ c := config.Config{
+ Bootstrap: []string{
+ "/ip4/127.0.0.1/tcp/4006/ws/ipfs/QmZatNPNW8DnpMRgSuUJjmzc6nETJi21c2quikh4jbmPKk",
+ "/ip4/51.75.35.194/tcp/4002/ws/ipfs/QmVGX47BzePPqEzpkTwfUJogPZxHcifpSXsGdgyHjtk5t7",
+ },
+ }
+ c.Identity = ident
+ c.Swarm.DisableNatPortMap = true
+
+ r := &repo.Mock{
+ C: c,
+ D: syncds.MutexWrap(datastore.NewMapDatastore()),
+ K: keystore.NewMemKeystore(),
+ }
+
+ ncfg := &core.BuildCfg{
+ Repo: r,
+ Permanent: true, // It is temporary way to signify that node is permanent
+ Online: true,
+ DisableEncryptedConnections: false,
+ Host: constructPeerHost,
+ ExtraOpts: map[string]bool{
+ "pubsub": false,
+ "ipnsps": false,
+ "mplex": false,
+ },
+ }
+
+ browserNode, err := core.NewNode(ctx, ncfg)
+ if err != nil {
+ panic(err)
+ }
+
+ api, err := coreapi.NewCoreAPI(browserNode)
+ if err != nil {
+ panic(err)
+ }
+
+ p, err := api.Unixfs().Add(ctx, files.NewBytesFile([]byte("an unique string not to be found anywhere else")))
+ if err != nil {
+ panic(err)
+ }
+
+ println(p.String())
+
+ js.Global().Get("document").Call("getElementById", "addForm").Set("onsubmit", js.NewCallback(func(args []js.Value) {
+ s := js.Global().Get("document").Call("getElementById", "toadd").Get("value").String() + "\n"
+ p, err := api.Unixfs().Add(ctx, files.NewBytesFile([]byte(s)))
+ if err != nil {
+ panic(err)
+ }
+
+ pe := js.Global().Get("document").Call("createElement", "p")
+ pe.Call("appendChild", js.Global().Get("document").Call("createTextNode", p.String()))
+ results := js.Global().Get("document").Call("getElementById", "results")
+ results.Call("insertBefore", pe, results.Get("firstChild"))
+ }))
+
+ t := time.Tick(time.Second)
+ for range t {
+ peers := js.Global().Get("document").Call("getElementById", "peers")
+ peers.Set("innerHTML", "")
+ list, err := api.Swarm().Peers(ctx)
+ if err != nil {
+ panic(err)
+ }
+
+ for _, ci := range list {
+ pe := js.Global().Get("document").Call("createElement", "p")
+ pe.Call("appendChild", js.Global().Get("document").Call("createTextNode", ci.Address().String()))
+ peers.Call("appendChild", pe)
+ }
+ }
+
+ wch := make(chan struct{})
+ <-wch
+}
diff --git a/misc/wasm/wstpt.go b/misc/wasm/wstpt.go
new file mode 100644
index 000000000..97ba83bf1
--- /dev/null
+++ b/misc/wasm/wstpt.go
@@ -0,0 +1,205 @@
+package main
+
+import (
+ "context"
+ "errors"
+ "fmt"
+ "gx/ipfs/QmQVUtnrNGtCRkCMpXgpApfzQjc8FDaDVxHqWH8cnZQeh5/go-multiaddr-net"
+ "io"
+ "net"
+ "syscall/js"
+ "time"
+
+ ma "gx/ipfs/QmRKLtwMw131aK7ugC3G7ybpumMz78YrJe5dzneyindvG1/go-multiaddr"
+ "gx/ipfs/QmY5Grm8pJdiSSVsYxx4uNRgweY72EmYwuSDbRnbFok3iY/go-libp2p-peer"
+ ws "gx/ipfs/QmZJpaENuYSCLnV4gWjrWhN2LMJWgTp3u2b6XZx3C12rNF/go-ws-transport"
+ "gx/ipfs/Qmb3qartY8DSgRaBA3Go4EEjY1ZbXhCcvmc4orsBKMjgRg/go-libp2p-transport"
+ tptu "gx/ipfs/Qmc9KUyhx1adPnHX2TBjEWvKej2Gg2kvisAFoQ74UiWYhd/go-libp2p-transport-upgrader"
+)
+
+const (
+ wsConnecting = iota
+ wsOpen
+ wsClosing
+ wsClosed
+)
+
+type jsws struct {
+ Upgrader *tptu.Upgrader
+}
+
+type jsconn struct {
+ ready chan struct{}
+
+ raddr ma.Multiaddr
+ wsock js.Value
+
+ readR *io.PipeReader
+ readW *io.PipeWriter
+
+ cb js.Callback
+}
+
+func (c *jsconn) Read(b []byte) (n int, err error) {
+ return c.readR.Read(b)
+}
+
+func (c *jsconn) onmessage(value []js.Value) {
+ u8a := js.Global().Get("Uint8Array").New(value[0].Get("data"))
+
+ // there is, very likely, a much, much better way
+ buf := make([]byte, u8a.Length())
+ for i := range buf {
+ buf[i] = byte(u8a.Index(i).Int())
+ }
+
+ if _, err := c.readW.Write(buf); err != nil {
+ panic(err)
+ }
+}
+
+func (c *jsconn) Write(b []byte) (n int, err error) {
+ <-c.ready
+ arr := js.TypedArrayOf(b)
+ defer arr.Release()
+ c.wsock.Call("send", arr)
+ return len(b), err
+}
+
+func (c *jsconn) LocalAddr() net.Addr {
+ a, _ := manet.ToNetAddr(c.LocalMultiaddr())
+ return a //TODO: probably broken
+}
+
+func (c *jsconn) RemoteAddr() net.Addr {
+ a, _ := manet.ToNetAddr(c.raddr)
+ return a //TODO: probably broken
+}
+
+func (c *jsconn) SetDeadline(t time.Time) error {
+ return nil
+}
+
+func (c *jsconn) SetReadDeadline(t time.Time) error {
+ return nil
+}
+
+func (c *jsconn) SetWriteDeadline(t time.Time) error {
+ return nil
+}
+
+func (c *jsconn) LocalMultiaddr() ma.Multiaddr {
+ m, _ := ma.NewMultiaddr("/ip4/127.0.0.1/tcp/80/ws")
+ return m
+}
+
+func (c *jsconn) RemoteMultiaddr() ma.Multiaddr {
+ return c.raddr
+}
+
+func (c *jsconn) Close() error {
+ c.wsock.Call("close")
+ c.cb.Release()
+ return nil // todo: errors?
+}
+
+func NewJsWs(u *tptu.Upgrader) *jsws {
+ return &jsws{u}
+}
+
+func (t *jsws) CanDial(addr ma.Multiaddr) bool {
+ return ws.WsFmt.Matches(addr)
+}
+
+func (t *jsws) Protocols() []int {
+ return []int{ws.WsProtocol.Code}
+}
+
+func (t *jsws) Proxy() bool {
+ return false
+}
+
+func (t *jsws) Dial(ctx context.Context, raddr ma.Multiaddr, p peer.ID) (transport.Conn, error) {
+ var addr = ""
+ var err error
+
+ ps := raddr.Protocols()
+ if len(ps) != 3 {
+ return nil, fmt.Errorf("unexpected protocol count")
+ }
+
+ switch ps[0].Code {
+ case ma.P_IP6:
+ addr, err = raddr.ValueForProtocol(ps[0].Code)
+ if err != nil {
+ return nil, err
+ }
+ addr = fmt.Sprintf("[%s]", addr)
+ case ma.P_IP4:
+ addr, err = raddr.ValueForProtocol(ps[0].Code)
+ if err != nil {
+ return nil, err
+ }
+ default:
+ return nil, fmt.Errorf("unsupported proto %d", ps[0].Code)
+ }
+
+ switch ps[1].Code {
+ case ma.P_TCP:
+ port, err := raddr.ValueForProtocol(ps[1].Code)
+ if err != nil {
+ return nil, err
+ }
+ addr = fmt.Sprintf("%s:%s", addr, port)
+ default:
+ return nil, fmt.Errorf("unsupported proto %d", ps[0].Code)
+ }
+
+ switch ps[2].Code {
+ case ws.WsProtocol.Code:
+ addr = "ws://" + addr
+ default:
+ return nil, fmt.Errorf("unsupported proto %d", ps[0].Code)
+ }
+ println("connecting to " + addr)
+
+ wsock := js.Global().Get("WebSocket").New(addr)
+ rr, rw := io.Pipe()
+ ready := make(chan struct{})
+
+ conn := &jsconn{
+ ready: ready,
+
+ raddr: raddr,
+ wsock: wsock,
+
+ readR: rr,
+ readW: rw,
+ }
+ conn.cb = js.NewCallback(conn.onmessage)
+ opencb := js.NewCallback(func(args []js.Value) {
+ println("onopen")
+ close(conn.ready)
+ })
+ go func() {
+ <-conn.ready
+ opencb.Release()
+ }()
+ var closecb js.Callback
+ closecb = js.NewCallback(func(args []js.Value) {
+ println("onclose")
+ _ = conn.readR.Close()
+ closecb.Release()
+ })
+
+ wsock.Set("binaryType", "arraybuffer")
+ wsock.Set("onmessage", conn.cb)
+ wsock.Set("onopen", opencb)
+ wsock.Set("onclose", closecb)
+
+ return t.Upgrader.UpgradeOutbound(ctx, t, conn, p)
+}
+
+func (t *jsws) Listen(laddr ma.Multiaddr) (transport.Listener, error) {
+ return nil, errors.New("not supported")
+}