add package contrib/rpc/grpcx (#2169)

example/rpc/grpcx/basic/client/main.go

@@ -0,0 +1,32 @@
+// Copyright GoFrame Author(https://goframe.org). All Rights Reserved.
+//
+// This Source Code Form is subject to the terms of the MIT License.
+// If a copy of the MIT was not distributed with this file,
+// You can obtain one at https://github.com/gogf/gf.
+
+package main
+
+import (
+	"time"
+
+	"github.com/gogf/gf/contrib/rpc/grpcx/v2"
+	"github.com/gogf/gf/example/rpc/grpcx/basic/protocol"
+	"github.com/gogf/gf/v2/frame/g"
+	"github.com/gogf/gf/v2/os/gctx"
+)
+
+func main() {
+	var (
+		ctx    = gctx.GetInitCtx()
+		client = protocol.NewEchoClient(grpcx.Client.MustNewGrpcClientConn("demo"))
+	)
+	for i := 0; i < 100; i++ {
+		res, err := client.Say(ctx, &protocol.SayReq{Content: "Hello"})
+		if err != nil {
+			g.Log().Error(ctx, err)
+			return
+		}
+		g.Log().Print(ctx, "Response:", res.Content)
+		time.Sleep(time.Second)
+	}
+}