diff --git a/go.mod b/go.mod new file mode 100644 index 0000000..651d1b1 --- /dev/null +++ b/go.mod @@ -0,0 +1,11 @@ +module github.com/schollz/croc/v7 + +go 1.13 + +require ( + github.com/gin-contrib/cors v1.3.0 + github.com/gin-gonic/gin v1.4.0 + github.com/gorilla/mux v1.7.3 + github.com/gorilla/websocket v1.4.1 + github.com/schollz/logger v1.0.1 +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..7257a86 --- /dev/null +++ b/go.sum @@ -0,0 +1,44 @@ +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/gin-contrib/cors v1.3.0 h1:PolezCc89peu+NgkIWt9OB01Kbzt6IP0J/JvkG6xxlg= +github.com/gin-contrib/cors v1.3.0/go.mod h1:artPvLlhkF7oG06nK8v3U8TNz6IeX+w1uzCSEId5/Vc= +github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3 h1:t8FVkw33L+wilf2QiWkw0UV77qRpcH/JHPKGpKa2E8g= +github.com/gin-contrib/sse v0.0.0-20190301062529-5545eab6dad3/go.mod h1:VJ0WA2NBN22VlZ2dKZQPAPnyWw5XTlK1KymzLKsr59s= +github.com/gin-gonic/gin v1.4.0 h1:3tMoCCfM7ppqsR0ptz/wi1impNpT7/9wQtMZ8lr1mCQ= +github.com/gin-gonic/gin v1.4.0/go.mod h1:OW2EZn3DO8Ln9oIKOvM++LBO+5UPHJJDH72/q/3rZdM= +github.com/golang/protobuf v1.3.1 h1:YF8+flBXS5eO826T4nzqPrxfhQThhXl0YzfuUPu4SBg= +github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= +github.com/gorilla/mux v1.7.3 h1:gnP5JzjVOuiZD07fKKToCAOjS0yOpj/qPETTXCCS6hw= +github.com/gorilla/mux v1.7.3/go.mod h1:1lud6UwP+6orDFRuTfBEV8e9/aOM/c4fVVCaMa2zaAs= +github.com/gorilla/websocket v1.4.1 h1:q7AeDBpnBk8AogcD4DSag/Ukw/KV+YhzLj2bP5HvKCM= +github.com/gorilla/websocket v1.4.1/go.mod h1:YR8l580nyteQvAITg2hZ9XVh4b55+EU/adAjf1fMHhE= +github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU= +github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= +github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= +github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= +github.com/mattn/go-isatty v0.0.7 h1:UvyT9uN+3r7yLEYSlJsbQGdsaB/a0DlgWP3pql6iwOc= +github.com/mattn/go-isatty v0.0.7/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s= +github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q= +github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0= +github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4= +github.com/schollz/croc v3.0.6+incompatible h1:rCfc8MGgcGjNW2/qSoulPh8CRGH+Ej4i3RWYOwhX9pE= +github.com/schollz/logger v1.0.1 h1:BuBAU+euqphM0Ny9qFVScl4RSxatis4nCHIkOxO2cUU= +github.com/schollz/logger v1.0.1/go.mod h1:P6F4/dGMGcx8wh+kG1zrNEd4vnNpEBY/mwEMd/vn6AM= +github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME= +github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI= +github.com/ugorji/go v1.1.4 h1:j4s+tAvLfL3bZyefP2SEWmhBzmuIlH/eqNuPdFPgngw= +github.com/ugorji/go v1.1.4/go.mod h1:uQMGLiO92mf5W77hV/PUCpI3pbzQx3CRekS0kk+RGrc= +golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w= +golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg= +golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY= +golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b h1:ag/x1USPSsqHud38I9BAC88qdNLDHHtQ4mlgQIZPPNA= +golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs= +golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ= +gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0= +gopkg.in/go-playground/assert.v1 v1.2.1/go.mod h1:9RXL0bg/zibRAgZUYszZSwO/z8Y/a8bDuhia5mkpMnE= +gopkg.in/go-playground/validator.v8 v8.18.2 h1:lFB4DoMU6B626w8ny76MV7VX6W2VHct2GVOI3xgiMrQ= +gopkg.in/go-playground/validator.v8 v8.18.2/go.mod h1:RX2a/7Ha8BgOhfk7j780h4/u/RRjR0eouCJSH80/M2Y= +gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw= +gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/main.go b/main.go new file mode 100644 index 0000000..7fbd5b9 --- /dev/null +++ b/main.go @@ -0,0 +1,18 @@ +package main + +import ( + "flag" + + "github.com/schollz/croc/v7/src/relay" + log "github.com/schollz/logger" +) + +func main() { + var startRelay bool + flag.BoolVar(&startRelay, "relay", false, "start relay") + flag.Parse() + log.SetLevel("debug") + if startRelay { + relay.Run() + } +} diff --git a/src/relay/relay.go b/src/relay/relay.go new file mode 100644 index 0000000..90bd73d --- /dev/null +++ b/src/relay/relay.go @@ -0,0 +1,214 @@ +package relay + +import ( + "net/http" + "sync" + "time" + + "github.com/gin-gonic/gin" + "github.com/gorilla/websocket" + log "github.com/schollz/logger" +) + +const ( + // Time allowed to write a message to the peer. + writeWait = 10 * time.Second + + // Time allowed to read the next pong message from the peer. + pongWait = 60 * time.Second + + // Send pings to peer with this period. Must be less than pongWait. + pingPeriod = (pongWait * 9) / 10 + + // Maximum message size allowed from peer. + maxMessageSize = 1024 * 64 +) + +var mutex sync.Mutex + +var upgrader = websocket.Upgrader{ + ReadBufferSize: 1024, + WriteBufferSize: 1024, + CheckOrigin: func(r *http.Request) bool { + return true + }, +} + +// connection is an middleman between the websocket connection and the hub. +type connection struct { + // The websocket connection. + ws *websocket.Conn + + // Buffered channel of outbound messages. + send chan []byte + + id int +} + +// readPump pumps messages from the websocket connection to the hub. +func (s subscription) readPump() { + c := s.conn + defer func() { + h.unregister <- s + c.ws.Close() + }() + c.ws.SetReadLimit(maxMessageSize) + c.ws.SetReadDeadline(time.Now().Add(pongWait)) + c.ws.SetPongHandler(func(string) error { c.ws.SetReadDeadline(time.Now().Add(pongWait)); return nil }) + for { + _, msg, err := c.ws.ReadMessage() + if err != nil { + if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway) { + log.Debugf("error: %v", err) + } + break + } + m := message{msg, s.room, c.id} + log.Debugf("[%s] msg from %d: '%s'", s.room, c.id, msg) + h.broadcast <- m + } +} + +// write writes a message with the given message type and payload. +func (c *connection) write(mt int, payload []byte) error { + c.ws.SetWriteDeadline(time.Now().Add(writeWait)) + return c.ws.WriteMessage(mt, payload) +} + +// writePump pumps messages from the hub to the websocket connection. +func (s *subscription) writePump() { + c := s.conn + ticker := time.NewTicker(pingPeriod) + defer func() { + ticker.Stop() + c.ws.Close() + }() + for { + select { + case message, ok := <-c.send: + if !ok { + c.write(websocket.CloseMessage, []byte{}) + return + } + if err := c.write(websocket.BinaryMessage, message); err != nil { + return + } + case <-ticker.C: + if err := c.write(websocket.PingMessage, []byte{}); err != nil { + return + } + } + } +} + +type message struct { + data []byte + room string + originID int +} + +type subscription struct { + conn *connection + room string +} + +// hub maintains the set of active connections and broadcasts messages to the +// connections. +type hub struct { + // Registered connections. + rooms map[string]map[*connection]bool + + // Inbound messages from the connections. + broadcast chan message + + // Register requests from the connections. + register chan subscription + + // Unregister requests from connections. + unregister chan subscription +} + +var h = hub{ + broadcast: make(chan message), + register: make(chan subscription), + unregister: make(chan subscription), + rooms: make(map[string]map[*connection]bool), +} + +func (h *hub) run() { + for { + select { + case s := <-h.register: + connections := h.rooms[s.room] + if connections == nil { + connections = make(map[*connection]bool) + h.rooms[s.room] = connections + } + log.Debug(len(connections)) + if len(connections) == 2 { + // only allow two connections per room + close(s.conn.send) + continue + } + log.Debugf("[%s/%+v] adding connection", s.room, s.conn) + h.rooms[s.room][s.conn] = true + case s := <-h.unregister: + connections := h.rooms[s.room] + if connections != nil { + if _, ok := connections[s.conn]; ok { + log.Debugf("[%s] deleting connection %d", s.room, s.conn.id) + delete(connections, s.conn) + close(s.conn.send) + if len(connections) == 0 { + delete(h.rooms, s.room) + } + } + } + case m := <-h.broadcast: + connections := h.rooms[m.room] + for c := range connections { + if c.id == m.originID { + continue + } + select { + case c.send <- m.data: + default: + close(c.send) + delete(connections, c) + if len(connections) == 0 { + log.Debugf("[%s] deleting", m.room) + delete(h.rooms, m.room) + } + } + } + } + } +} + +func Run() (err error) { + log.SetLevel("debug") + + go h.run() + + router := gin.Default() + router.GET("/ws/*room", func(gc *gin.Context) { + ws, err := upgrader.Upgrade(gc.Writer, gc.Request, nil) + room := gc.Param("room") + if err != nil { + log.Debug(err) + return + } + id := 0 + connections := h.rooms[room] + if connections != nil { + id = len(connections) + } + c := &connection{send: make(chan []byte, 4096), ws: ws, id: id} + s := subscription{c, room} + h.register <- s + go s.writePump() + log.Debugf("[%s] new connection %+v", room, c) + s.readPump() + }) + return router.Run(":8000") +} diff --git a/src/webrtc/go.mod b/src/webrtc/go.mod deleted file mode 100644 index 53db1dd..0000000 --- a/src/webrtc/go.mod +++ /dev/null @@ -1,17 +0,0 @@ -module github.com/schollz/croc/src/webrtc - -go 1.13 - -require ( - github.com/golang/protobuf v1.3.2 // indirect - github.com/lucas-clemente/quic-go v0.13.1 // indirect - github.com/pion/datachannel v1.4.13 // indirect - github.com/pion/dtls v1.5.4 // indirect - github.com/pion/ice v0.7.2 // indirect - github.com/pion/webrtc/v2 v2.1.12 - github.com/schollz/browsersync v0.0.0-20190614205345-265e980b28c3 // indirect - github.com/schollz/logger v1.0.1 - golang.org/x/crypto v0.0.0-20191108234033-bd318be0434a // indirect - golang.org/x/net v0.0.0-20191109021931-daa7c04131f5 // indirect - golang.org/x/sys v0.0.0-20191110163157-d32e6e3b99c4 // indirect -) diff --git a/src/webrtc/go.sum b/src/webrtc/go.sum deleted file mode 100644 index a773b07..0000000 --- a/src/webrtc/go.sum +++ /dev/null @@ -1,151 +0,0 @@ -github.com/alangpierce/go-forceexport v0.0.0-20160317203124-8f1d6941cd75/go.mod h1:uAXEEpARkRhCZfEvy/y0Jcc888f9tHCc1W7/UeEtreE= -github.com/cheekybits/genny v1.0.0 h1:uGGa4nei+j20rOSeDeP5Of12XVm7TGUd4dJA9RDitfE= -github.com/cheekybits/genny v1.0.0/go.mod h1:+tQajlRqAUrPI7DOSpB0XAqZYtQakVtB7wXkRAgjxjQ= -github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= -github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I= -github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo= -github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A= -github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= -github.com/golang/protobuf v1.3.0 h1:kbxbvI4Un1LUWKxufD+BiE6AEExYYgkQLQmLFqA1LFk= -github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0= -github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs= -github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U= -github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q= -github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ= -github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU= -github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo= -github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ= -github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI= -github.com/lucas-clemente/quic-go v0.7.1-0.20190401152353-907071221cf9 h1:tbuodUh2vuhOVZAdW3NEUvosFHUMJwUNl7jk/VSEiwc= -github.com/lucas-clemente/quic-go v0.7.1-0.20190401152353-907071221cf9/go.mod h1:PpMmPfPKO9nKJ/psF49ESTAGQSdfXxlg1otPbEB2nOw= -github.com/lucas-clemente/quic-go v0.13.1 h1:CxtJTXQIh2aboCPk0M6vf530XOov6DZjVBiSE3nSj8s= -github.com/lucas-clemente/quic-go v0.13.1/go.mod h1:Vn3/Fb0/77b02SGhQk36KzOUmXgVpFfizUfW5WMaqyU= -github.com/marten-seemann/chacha20 v0.2.0 h1:f40vqzzx+3GdOmzQoItkLX5WLvHgPgyYqFFIO5Gh4hQ= -github.com/marten-seemann/chacha20 v0.2.0/go.mod h1:HSdjFau7GzYRj+ahFNwsO3ouVJr1HFkWoEwNDb4TMtE= -github.com/marten-seemann/qpack v0.1.0/go.mod h1:LFt1NU/Ptjip0C2CPkhimBz5CGE3WGDAUWqna+CNTrI= -github.com/marten-seemann/qtls v0.2.3 h1:0yWJ43C62LsZt08vuQJDK1uC1czUc3FJeCLPoNAI4vA= -github.com/marten-seemann/qtls v0.2.3/go.mod 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h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= -gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI= diff --git a/src/webrtc/websend/index.html b/src/webrtc/websend/index.html index 020f1a6..7e53078 100644 --- a/src/webrtc/websend/index.html +++ b/src/webrtc/websend/index.html @@ -120,6 +120,29 @@ pc.setRemoteDescription(new RTCSessionDescription(JSON.parse(atob(document.getElementById('remoteSessionDescription').value)))).catch(log) pc.createAnswer().then(d => pc.setLocalDescription(d)).catch(log) } + + // websockets + var socket; + + const socketMessageListener = (event) => { + log(event); + }; + const socketOpenListener = (event) => { + log('Connected'); + } + const socketCloseListener = (event) => { + if (socket) { + log('Disconnected.'); + } + // var ws_url = window.origin.replace("http", "ws") + '/ws/test1'; + var ws_url = "ws://localhost:8000/ws/test1"; + log(`connecting to '${ws_url}'`) + socket = new WebSocket(ws_url); + socket.addEventListener('open', socketOpenListener); + socket.addEventListener('message', socketMessageListener); + socket.addEventListener('close', socketCloseListener); + }; + socketCloseListener();