Features/websocket

examples/websocket/client.go

@@ -0,0 +1,105 @@
+/*
+ *
+ * Copyright 2020 waterdrop authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package main
+
+import (
+	"flag"
+	"fmt"
+	"log"
+	"net/url"
+	"os"
+	"os/signal"
+	"time"
+
+	"github.com/gorilla/websocket"
+)
+
+var addr = flag.String("addr", "localhost:9000", "http service address")
+var ping = []byte("ping")
+
+func main() {
+	flag.Parse()
+	log.SetFlags(0)
+
+	interrupt := make(chan os.Signal, 1)
+	signal.Notify(interrupt, os.Interrupt)
+
+	u := url.URL{Scheme: "ws", Host: *addr, Path: "/ws"}
+	log.Printf("connecting to %s", u.String())
+
+	c, _, err := websocket.DefaultDialer.Dial(u.String(), nil)
+	if err != nil {
+		log.Fatal("dial:", err)
+	}
+	defer c.Close()
+
+	done := make(chan struct{})
+
+	go func() {
+		defer close(done)
+		for {
+			_, message, err := c.ReadMessage()
+			if err != nil {
+				log.Println("read:", err)
+				return
+			}
+			log.Printf("recv: %s", message)
+		}
+	}()
+
+	ticker := time.NewTicker(10 * time.Second)
+	pingTicker := time.NewTicker(time.Second * 5)
+	defer ticker.Stop()
+	defer pingTicker.Stop()
+
+	for {
+		select {
+		case <-done:
+			return
+		case t := <-ticker.C:
+			err := c.WriteMessage(websocket.TextMessage, []byte(t.String()))
+			if err != nil {
+				log.Println("write:", err)
+				return
+			}
+		case <-pingTicker.C:
+			err := c.WriteMessage(websocket.PingMessage, ping)
+			if err != nil {
+				log.Println("write:", err)
+				return
+			}
+			fmt.Println("write ping")
+		case <-interrupt:
+			log.Println("interrupt")
+
+			// Cleanly close the connection by sending a close message and then
+			// waiting (with timeout) for the server to close the connection.
+			err := c.WriteMessage(websocket.CloseMessage, websocket.FormatCloseMessage(websocket.CloseNormalClosure, ""))
+			if err != nil {
+				log.Println("write close:", err)
+				return
+			}
+			select {
+			case <-done:
+			case <-time.After(time.Second):
+			}
+			return
+		}
+	}
+}

examples/websocket/server.go

@@ -0,0 +1,66 @@
+/*
+ *
+ * Copyright 2020 waterdrop authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package main
+
+import (
+	"fmt"
+	"github.com/UnderTreeTech/waterdrop/pkg/log"
+	"github.com/UnderTreeTech/waterdrop/pkg/server/http"
+	"github.com/gorilla/websocket"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+)
+
+var pong = []byte("pong")
+
+func main() {
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, syscall.SIGHUP, syscall.SIGQUIT, syscall.SIGTERM, syscall.SIGINT)
+
+	defer log.New(nil).Sync()
+
+	srv := http.NewServer(nil)
+	srv.Upgrade(http.NewWebSocket("/ws", func(ws *http.WebSocket) {
+		ws.SetPingHandler(func(message string) error {
+			ws.SetReadDeadline(time.Now().Add(time.Second * 10))
+			return ws.WriteControl(websocket.PongMessage, pong, time.Now().Add(time.Second))
+		})
+		for {
+			ws.SetReadDeadline(time.Now().Add(time.Second * 10))
+			msgType, message, err := ws.ReadMessage()
+			if err != nil {
+				fmt.Println("read msg fail", err.Error())
+				break
+			}
+			fmt.Println("recv msg", string(message), msgType)
+
+			err = ws.WriteMessage(msgType, message)
+			if err != nil {
+				fmt.Println("write msg fail", err.Error())
+				break
+			}
+		}
+	}))
+
+	srv.Start()
+
+	<-c
+}

go.mod

@@ -7,7 +7,6 @@ require (
 	github.com/Masterminds/squirrel v1.4.0
 	github.com/Shopify/sarama v1.27.0
 	github.com/UnderTreeTech/protobuf v0.0.0-20200819073955-77c6ad3d6345
-	github.com/alibaba/sentinel-golang v0.6.1 // indirect
 	github.com/apache/rocketmq-client-go/v2 v2.0.0
 	github.com/codahale/hdrhistogram v0.0.0-20161010025455-3a0bb77429bd // indirect
 	github.com/coreos/go-semver v0.3.0 // indirect
@@ -23,7 +22,7 @@ require (
 	github.com/golang/protobuf v1.4.2
 	github.com/gomodule/redigo v1.8.2
 	github.com/google/uuid v1.1.1 // indirect
-	github.com/gorilla/websocket v1.4.2 // indirect
+	github.com/gorilla/websocket v1.4.2
 	github.com/grpc-ecosystem/go-grpc-middleware v1.1.0 // indirect
 	github.com/konsorten/go-windows-terminal-sequences v1.0.2 // indirect
 	github.com/mitchellh/mapstructure v1.3.3