add request method

request.go

@@ -0,0 +1,15 @@
+package natsio
+
+import (
+	"time"
+
+	"github.com/nats-io/nats.go"
+)
+
+// Default timeout 10s
+const requestTimeout = 10 * time.Second
+
+// Request ...
+func Request(subject string, payload []byte) (*nats.Msg, error) {
+	return natsClient.Request(subject, payload, requestTimeout)
+}