examples: More examples

examples/1proc/main.go

@@ -0,0 +1,86 @@
+package main
+
+import "io"
+import "log"
+import "time"
+import "errors"
+import "context"
+import "git.tebibyte.media/sashakoshka/hopp"
+
+var network = "tcp"
+var addr    = "localhost:7959"
+
+func main() {
+	go func() {
+		defer log.Println("SERVER closing")
+		
+		listener, err := hopp.Listen(network, addr, nil)
+		if err != nil { log.Println("SERVER", err); return }
+		log.Println("SERVER listening")
+		conn, err := listener.Accept()
+		if err != nil { log.Println("SERVER", err); return }
+		defer conn.Close()
+		
+		trans, err := conn.AcceptTrans()
+		if err != nil { log.Println("SERVER", err); return }
+		defer trans.Close()
+
+		for {
+			method, data, err := trans.Receive()
+			if err != nil { log.Println("SERVER", err); return }
+			log.Println("SERVER got", method, data)
+			log.Println("SERVER send", method, data)
+			err = trans.Send(1, data[:])
+			if err != nil { log.Println("SERVER", err); return }
+		}
+	}()
+
+	time.Sleep(time.Second * 2)
+	
+	func() {
+		log.Println("CLIENT dialing")
+		conn, err := hopp.Dial(context.Background(), network, addr, nil)
+		if err != nil { log.Fatalln("CLIENT", err) }
+		log.Println("CLIENT dialed")
+		
+		trans, err := conn.OpenTrans()
+		if err != nil {
+			log.Println("CLIENT", err)
+			return
+		}
+
+		go func() {
+			for {
+				method, data, err := trans.Receive()
+				if err != nil {
+					if !errors.Is(err, io.EOF) {
+						log.Printf("CLIENT failed to receive message: %v", err)
+					}
+					return
+				}
+				log.Println("CLIENT got", method, data)
+			}
+		}()
+		
+		data := [1]byte { }
+		for {
+			log.Println("CLIENT send", 1, data)
+			err := trans.Send(1, data[:])
+			if err != nil {
+				log.Println("CLIENT", err)
+				return
+			}
+			data[0] ++
+			time.Sleep(time.Second)
+		}
+		
+		log.Println("CLIENT waiting for connection close...")
+		trans, err = conn.AcceptTrans()
+		if !errors.Is(err, io.EOF) {
+			log.Println("CLIENT wrong error:", err)
+			log.Fatalln("CLIENT trans:", trans)
+		}
+		log.Println("CLIENT DONE")
+		conn.Close()
+	}()
+}