Update client_opt.go

rpc/client_opt.go

@@ -20,6 +20,7 @@ import (
 	"net/http"
 
 	"github.com/gorilla/websocket"
+	"go.opentelemetry.io/otel/trace"
 )
 
 // ClientOption is a configuration option for the RPC client.
@@ -41,6 +42,7 @@ type clientConfig struct {
 	idgen              func() ID
 	batchItemLimit     int
 	batchResponseLimit int
+	tracerProvider     trace.TracerProvider
 }
 
 func (cfg *clientConfig) initHeaders() {