chore: add aria2 rpc package

pkg/aria2/rpc/call_test.go

@@ -0,0 +1,23 @@
+package rpc
+
+import (
+	"context"
+	"testing"
+	"time"
+)
+
+func TestWebsocketCaller(t *testing.T) {
+	time.Sleep(time.Second)
+	c, err := newWebsocketCaller(context.Background(), "ws://localhost:6800/jsonrpc", time.Second, &DummyNotifier{})
+	if err != nil {
+		t.Fatal(err.Error())
+	}
+	defer c.Close()
+
+	var info VersionInfo
+	if err := c.Call(aria2GetVersion, []interface{}{}, &info); err != nil {
+		t.Error(err.Error())
+	} else {
+		println(info.Version)
+	}
+}