diff --git a/src/main/java/org/redkale/net/client/ClientCodec.java b/src/main/java/org/redkale/net/client/ClientCodec.java
index e259ff199..de51fd1fc 100644
--- a/src/main/java/org/redkale/net/client/ClientCodec.java
+++ b/src/main/java/org/redkale/net/client/ClientCodec.java
@@ -37,7 +37,7 @@ public abstract class ClientCodec<R extends ClientRequest, P extends ClientResul
 
     protected ClientMessageListener messageListener;
 
-    public ClientCodec(ClientConnection<R, P> connection) {
+    protected ClientCodec(ClientConnection<R, P> connection) {
         Objects.requireNonNull(connection);
         this.connection = connection;
     }
@@ -118,9 +118,7 @@ public abstract class ClientCodec<R extends ClientRequest, P extends ClientResul
 
     void responseComplete(boolean halfCompleted, ClientFuture<R, P> respFuture, P message, Throwable exc) {
         R request = respFuture.request;
-        if (request != null) {
-            Traces.currentTraceid(request.getTraceid());
-        }
+        Traces.currentTraceid(request.getTraceid());
         AsyncIOThread readThread = connection.channel.getReadIOThread();
         final WorkThread workThread = request.workThread;
         try {
diff --git a/src/main/java/org/redkale/net/http/HttpSimpleRequest.java b/src/main/java/org/redkale/net/http/HttpSimpleRequest.java
index 55d1ac1e3..6c469bff8 100644
--- a/src/main/java/org/redkale/net/http/HttpSimpleRequest.java
+++ b/src/main/java/org/redkale/net/http/HttpSimpleRequest.java
@@ -139,6 +139,11 @@ public class HttpSimpleRequest extends ClientRequest implements java.io.Serializ
         return sb.toString();
     }
 
+    public HttpSimpleRequest formUrlencoded() {
+        this.headers.put("Content-Type", "x-www-form-urlencoded");
+        return this;
+    }
+
     public HttpSimpleRequest rpc(boolean rpc) {
         this.rpc = rpc;
         return this;