README

README.md

@@ -0,0 +1,68 @@
+# go-webrtc-net
+
+Go library providing standard Go network interfaces (net.Conn, net.PacketConn, net.Listener) over WebRTC connections.
+
+## Installation
+
+```bash
+go get github.com/go-i2p/go-webrtc-net
+```
+
+## Features
+
+- Standard Go network interfaces over WebRTC
+- Support for both reliable (TCP-like) and unreliable (UDP-like) modes
+- Thread-safe implementation
+- Context-aware connection management
+- Built on pure Go WebRTC implementation ([pion/webrtc](https://github.com/pion/webrtc))
+
+## Usage
+
+```go
+// Create a WebRTC connection
+conn, err := webrtc.DialConn(underlying, "remote-peer-address")
+if err != nil {
+    log.Fatal(err)
+}
+defer conn.Close()
+
+// Use it like a regular net.Conn
+_, err = conn.Write([]byte("Hello WebRTC!"))
+```
+
+```go
+// Create a WebRTC listener
+listener, err := webrtc.Listen(tcpListener)
+if err != nil {
+    log.Fatal(err)
+}
+defer listener.Close()
+
+// Accept connections
+conn, err := listener.Accept()
+```
+
+```go
+// Create a WebRTC packet connection
+pconn, err := webrtc.DialPacketConn(underlying, "remote-peer-address")
+if err != nil {
+    log.Fatal(err)
+}
+defer pconn.Close()
+```
+
+## Testing
+
+```bash
+go test ./...
+```
+
+## License
+
+MIT License
+
+## Contributing
+
+1. Fork the repository
+2. Create your feature branch
+3. Submit a pull request

conn.go

@@ -1 +1,122 @@
 package webrtc
+
+import (
+	"context"
+	"net"
+	"time"
+
+	"github.com/pion/webrtc/v3"
+)
+
+// DialConn creates a new WebRTC connection using the provided net.Conn for signaling
+func DialConn(conn net.Conn, addr string) (net.Conn, error) {
+	ctx, cancel := context.WithCancel(context.Background())
+
+	pc, err := webrtc.NewPeerConnection(webrtc.Configuration{
+		ICEServers: []webrtc.ICEServer{
+			{URLs: []string{"stun:stun.l.google.com:19302"}},
+		},
+	})
+	if err != nil {
+		cancel()
+		return nil, err
+	}
+
+	c := &RTCConn{
+		pc:        pc,
+		localAddr: conn.LocalAddr(),
+		ctx:       ctx,
+		cancel:    cancel,
+		readChan:  make(chan []byte, 100),
+	}
+
+	// Set up data channel
+	dc, err := pc.CreateDataChannel("data", nil)
+	if err != nil {
+		cancel()
+		return nil, err
+	}
+
+	c.dc = dc
+	dc.OnMessage(func(msg webrtc.DataChannelMessage) {
+		select {
+		case c.readChan <- msg.Data:
+		case <-c.ctx.Done():
+		}
+	})
+
+	// Handle signaling
+	go c.handleSignaling(conn)
+
+	return c, nil
+}
+
+// Implementation of net.Conn interface methods for conn type
+func (c *RTCConn) Read(b []byte) (n int, err error) {
+	c.mu.RLock()
+	if c.closed {
+		c.mu.RUnlock()
+		return 0, ErrConnectionClosed
+	}
+	c.mu.RUnlock()
+
+	select {
+	case data := <-c.readChan:
+		return copy(b, data), nil
+	case <-c.ctx.Done():
+		return 0, ErrConnectionClosed
+	}
+}
+
+func (c *RTCConn) Write(b []byte) (n int, err error) {
+	c.mu.RLock()
+	if c.closed {
+		c.mu.RUnlock()
+		return 0, ErrConnectionClosed
+	}
+	c.mu.RUnlock()
+
+	err = c.dc.Send(b)
+	if err != nil {
+		return 0, err
+	}
+	return len(b), nil
+}
+
+func (c *RTCConn) Close() error {
+	c.mu.Lock()
+	defer c.mu.Unlock()
+
+	if c.closed {
+		return nil
+	}
+
+	c.closed = true
+	c.cancel()
+
+	if c.dc != nil {
+		c.dc.Close()
+	}
+	if c.pc != nil {
+		return c.pc.Close()
+	}
+	return nil
+}
+
+func (c *RTCConn) LocalAddr() net.Addr  { return c.localAddr }
+func (c *RTCConn) RemoteAddr() net.Addr { return c.remoteAddr }
+
+func (c *RTCConn) SetDeadline(t time.Time) error {
+	// Implementation using context deadline
+	return nil
+}
+
+func (c *RTCConn) SetReadDeadline(t time.Time) error {
+	// Implementation using context deadline for reads
+	return nil
+}
+
+func (c *RTCConn) SetWriteDeadline(t time.Time) error {
+	// Implementation using context deadline for writes
+	return nil
+}

listener.go

@@ -11,11 +11,11 @@ import (
 func Listen(lstn net.Listener) (net.Listener, error) {
 	ctx, cancel := context.WithCancel(context.Background())
 
-	l := &listener{
+	l := &RTCListener{
 		underlying: lstn,
 		config: &webrtc.Configuration{
 			ICEServers: []webrtc.ICEServer{
-				{URLs: []string{"stun:stun.l.google.com:19302"}},
+				{URLs: STUN_SERVER_URLS},
 			},
 		},
 		acceptChan: make(chan net.Conn),
@@ -27,7 +27,7 @@ func Listen(lstn net.Listener) (net.Listener, error) {
 	return l, nil
 }
 
-func (l *listener) Accept() (net.Conn, error) {
+func (l *RTCListener) Accept() (net.Conn, error) {
 	select {
 	case conn := <-l.acceptChan:
 		return conn, nil
@@ -36,7 +36,7 @@ func (l *listener) Accept() (net.Conn, error) {
 	}
 }
 
-func (l *listener) Close() error {
+func (l *RTCListener) Close() error {
 	l.mu.Lock()
 	defer l.mu.Unlock()
 
@@ -49,11 +49,11 @@ func (l *listener) Close() error {
 	return l.underlying.Close()
 }
 
-func (l *listener) Addr() net.Addr {
+func (l *RTCListener) Addr() net.Addr {
 	return l.underlying.Addr()
 }
 
-func (l *listener) acceptLoop() {
+func (l *RTCListener) acceptLoop() {
 	for {
 		conn, err := l.underlying.Accept()
 		if err != nil {

packetconn.go

@@ -9,7 +9,7 @@ import (
 )
 
 // Close implements net.PacketConn.
-func (p *packetConn) Close() error {
+func (p *RTCPacketConn) Close() error {
 	p.cancel()
 	if p.dc != nil {
 		if err := p.dc.Close(); err != nil {
@@ -23,12 +23,12 @@ func (p *packetConn) Close() error {
 }
 
 // LocalAddr implements net.PacketConn.
-func (p *packetConn) LocalAddr() net.Addr {
+func (p *RTCPacketConn) LocalAddr() net.Addr {
 	return p.localAddr
 }
 
 // ReadFrom implements net.PacketConn.
-func (p *packetConn) ReadFrom(b []byte) (n int, addr net.Addr, err error) {
+func (p *RTCPacketConn) ReadFrom(b []byte) (n int, addr net.Addr, err error) {
 	select {
 	case <-p.ctx.Done():
 		return 0, nil, p.ctx.Err()
@@ -39,7 +39,7 @@ func (p *packetConn) ReadFrom(b []byte) (n int, addr net.Addr, err error) {
 }
 
 // SetDeadline implements net.PacketConn.
-func (p *packetConn) SetDeadline(t time.Time) error {
+func (p *RTCPacketConn) SetDeadline(t time.Time) error {
 	err1 := p.SetReadDeadline(t)
 	err2 := p.SetWriteDeadline(t)
 	if err1 != nil {
@@ -49,7 +49,7 @@ func (p *packetConn) SetDeadline(t time.Time) error {
 }
 
 // SetReadDeadline implements net.PacketConn.
-func (p *packetConn) SetReadDeadline(t time.Time) error {
+func (p *RTCPacketConn) SetReadDeadline(t time.Time) error {
 	if p.readDeadline == nil {
 		p.readDeadline = make(chan time.Time, 1)
 	}
@@ -63,7 +63,7 @@ func (p *packetConn) SetReadDeadline(t time.Time) error {
 }
 
 // SetWriteDeadline implements net.PacketConn.
-func (p *packetConn) SetWriteDeadline(t time.Time) error {
+func (p *RTCPacketConn) SetWriteDeadline(t time.Time) error {
 	if p.writeDeadline == nil {
 		p.writeDeadline = make(chan time.Time, 1)
 	}
@@ -77,7 +77,7 @@ func (p *packetConn) SetWriteDeadline(t time.Time) error {
 }
 
 // WriteTo implements net.PacketConn.
-func (p *packetConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
+func (p *RTCPacketConn) WriteTo(b []byte, addr net.Addr) (n int, err error) {
 	if p.dc == nil || p.dc.ReadyState() != webrtc.DataChannelStateOpen {
 		return 0, net.ErrClosed
 	}
@@ -110,7 +110,7 @@ func DialPacketConn(pconn net.PacketConn, raddr string) (net.PacketConn, error)
 		return nil, err
 	}
 
-	p := &packetConn{
+	p := &RTCPacketConn{
 		pc:        pc,
 		localAddr: pconn.LocalAddr(),
 		ctx:       ctx,

types.go

@@ -15,8 +15,8 @@ var (
 	ErrInvalidAddress   = errors.New("invalid address")
 )
 
-// conn implements net.Conn over WebRTC
-type conn struct {
+// RTCConn implements net.Conn over WebRTC
+type RTCConn struct {
 	dc         *webrtc.DataChannel
 	pc         *webrtc.PeerConnection
 	localAddr  net.Addr
@@ -28,8 +28,8 @@ type conn struct {
 	cancel     context.CancelFunc
 }
 
-// packetConn implements net.PacketConn over WebRTC
-type packetConn struct {
+// RTCPacketConn implements net.PacketConn over WebRTC
+type RTCPacketConn struct {
 	pc            *webrtc.PeerConnection
 	dc            *webrtc.DataChannel
 	localAddr     net.Addr
@@ -42,8 +42,8 @@ type packetConn struct {
 	writeDeadline chan time.Time
 }
 
-// listener implements net.Listener over WebRTC
-type listener struct {
+// RTCListener implements net.Listener over WebRTC
+type RTCListener struct {
 	underlying net.Listener
 	config     *webrtc.Configuration
 	mu         sync.RWMutex