diff --git a/a8/tcpclient.cc b/a8/tcpclient.cc
index 8c97e2d..67c8468 100644
--- a/a8/tcpclient.cc
+++ b/a8/tcpclient.cc
@@ -13,7 +13,7 @@
 #include <a8/a8.h>
 #include <a8/tcpclient.h>
 
-const int MAX_RECV_BUFFERSIZE = 1024 * 10;
+const int MAX_RECV_BUFFERSIZE = 1024 * 64;
 
 namespace a8
 {
@@ -120,6 +120,19 @@ namespace a8
             socket_ = INVALID_SOCKET;
             return false;
         }
+        //set nodelay
+        {
+            int flag = 1;
+            int ret = ::setsockopt(socket_,
+                                   IPPROTO_TCP,
+                                   TCP_NODELAY,
+                                   (char *)&flag,
+                                   sizeof(flag));
+            assert(ret >= 0);
+            if (ret < 0) {
+                abort();
+            }
+        }
         connected_ = true;
         if (on_connect) {
             on_connect(this);