diff --git a/src/idempotency/client/receipt_handler.c b/src/idempotency/client/receipt_handler.c
index b6db0bf..061d3ef 100644
--- a/src/idempotency/client/receipt_handler.c
+++ b/src/idempotency/client/receipt_handler.c
@@ -523,6 +523,7 @@ static int do_init(FCAddressPtrArray *address_array)
 {
     const int task_arg_size = 0;
     const bool double_buffers = false;
+    const bool need_shrink_task_buffer = false;
     const bool explicit_post_recv = false;
     int result;
     int bytes;
@@ -555,8 +556,8 @@ static int do_init(FCAddressPtrArray *address_array)
             NULL, sf_proto_set_body_length, NULL, NULL, receipt_deal_task,
             receipt_task_finish_cleanup, receipt_recv_timeout_callback,
             1000, sizeof(SFCommonProtoHeader), TASK_PADDING_SIZE,
-            task_arg_size, double_buffers, explicit_post_recv,
-            receipt_init_task, pd, NULL);
+            task_arg_size, double_buffers, need_shrink_task_buffer,
+            explicit_post_recv, receipt_init_task, pd, NULL);
 }
 
 int receipt_handler_init(FCAddressPtrArray *address_array)
diff --git a/src/sf_nio.c b/src/sf_nio.c
index 44cbc58..291583c 100644
--- a/src/sf_nio.c
+++ b/src/sf_nio.c
@@ -269,14 +269,16 @@ static inline int set_read_event(struct fast_task_info *task)
 
 int sf_set_read_event(struct fast_task_info *task)
 {
+    /* reset recv offset and length */
+    task->recv.ptr->offset = 0;
+    task->recv.ptr->length = 0;
+
 #if IOEVENT_USE_URING
     if (task->handler->use_io_uring) {
         return 0;
     }
 #endif
 
-    task->recv.ptr->offset = 0;
-    task->recv.ptr->length = 0;
     task->nio_stages.current = SF_NIO_STAGE_RECV;
     return set_read_event(task);
 }
diff --git a/src/sf_service.c b/src/sf_service.c
index a9adfee..26393b7 100644
--- a/src/sf_service.c
+++ b/src/sf_service.c
@@ -34,6 +34,7 @@
 #include "fastcommon/ioevent_loop.h"
 #include "fastcommon/fc_memory.h"
 #include "sf_nio.h"
+#include "sf_proto.h"
 #include "sf_util.h"
 #include "sf_service.h"
 
@@ -60,9 +61,9 @@ struct worker_thread_context {
 static void *worker_thread_entrance(void *arg);
 
 static int sf_init_free_queue(SFContext *sf_context, const char *name,
-        const bool double_buffers, const int task_padding_size,
-        const int task_arg_size, TaskInitCallback init_callback,
-        void *init_arg)
+        const bool double_buffers, const bool need_shrink_task_buffer,
+        const int task_padding_size, const int task_arg_size,
+        TaskInitCallback init_callback, void *init_arg)
 {
     int result;
     int m;
@@ -82,9 +83,9 @@ static int sf_init_free_queue(SFContext *sf_context, const char *name,
     }
     alloc_conn_once = 256 / m;
     return free_queue_init_ex2(&sf_context->free_queue, name, double_buffers,
-            sf_context->net_buffer_cfg.max_connections, alloc_conn_once,
-            sf_context->net_buffer_cfg.min_buff_size, sf_context->
-            net_buffer_cfg.max_buff_size, task_padding_size,
+            need_shrink_task_buffer, sf_context->net_buffer_cfg.max_connections,
+            alloc_conn_once, sf_context->net_buffer_cfg.min_buff_size,
+            sf_context->net_buffer_cfg.max_buff_size, task_padding_size,
             task_arg_size, init_callback, init_arg);
 }
 
@@ -100,8 +101,9 @@ int sf_service_init_ex2(SFContext *sf_context, const char *name,
         sf_recv_timeout_callback timeout_callback, const int net_timeout_ms,
         const int proto_header_size, const int task_padding_size,
         const int task_arg_size, const bool double_buffers,
-        const bool explicit_post_recv, TaskInitCallback init_callback,
-        void *init_arg, sf_release_buffer_callback release_buffer_callback)
+        const bool need_shrink_task_buffer, const bool explicit_post_recv,
+        TaskInitCallback init_callback, void *init_arg,
+        sf_release_buffer_callback release_buffer_callback)
 {
     int result;
     int bytes;
@@ -131,8 +133,8 @@ int sf_service_init_ex2(SFContext *sf_context, const char *name,
     }
 
     if ((result=sf_init_free_queue(sf_context, name, double_buffers,
-                    task_padding_size, task_arg_size, init_callback,
-                    init_arg)) != 0)
+                    need_shrink_task_buffer, task_padding_size,
+                    task_arg_size, init_callback, init_arg)) != 0)
     {
         return result;
     }
diff --git a/src/sf_service.h b/src/sf_service.h
index eba2c7f..f806806 100644
--- a/src/sf_service.h
+++ b/src/sf_service.h
@@ -25,6 +25,7 @@
 #include "fastcommon/ioevent.h"
 #include "fastcommon/fast_task_queue.h"
 #include "sf_types.h"
+#include "sf_proto.h"
 #include "sf_global.h"
 
 typedef void* (*sf_alloc_thread_extra_data_callback)(const int thread_index);
@@ -46,8 +47,9 @@ int sf_service_init_ex2(SFContext *sf_context, const char *name,
         sf_recv_timeout_callback timeout_callback, const int net_timeout_ms,
         const int proto_header_size, const int task_padding_size,
         const int task_arg_size, const bool double_buffers,
-        const bool explicit_post_recv, TaskInitCallback init_callback,
-        void *init_arg, sf_release_buffer_callback release_buffer_callback);
+        const bool need_shrink_task_buffer, const bool explicit_post_recv,
+        TaskInitCallback init_callback, void *init_arg,
+        sf_release_buffer_callback release_buffer_callback);
 
 #define sf_service_init_ex(sf_context, name, alloc_thread_extra_data_callback,\
         thread_loop_callback, accept_done_callback, set_body_length_func,   \
@@ -57,7 +59,7 @@ int sf_service_init_ex2(SFContext *sf_context, const char *name,
         thread_loop_callback, accept_done_callback, set_body_length_func,     \
         NULL, send_done_callback, deal_func, task_cleanup_func, \
         timeout_callback, net_timeout_ms, proto_header_size, \
-        0, task_arg_size, false, false, NULL, NULL, NULL)
+        0, task_arg_size, false, true, false, NULL, NULL, NULL)
 
 #define sf_service_init(name, alloc_thread_extra_data_callback, \
         thread_loop_callback, accept_done_callback, set_body_length_func,   \
@@ -66,8 +68,8 @@ int sf_service_init_ex2(SFContext *sf_context, const char *name,
     sf_service_init_ex2(&g_sf_context, name, alloc_thread_extra_data_callback, \
         thread_loop_callback, accept_done_callback, set_body_length_func, NULL,\
         send_done_callback, deal_func, task_cleanup_func, timeout_callback, \
-        net_timeout_ms, proto_header_size, 0, task_arg_size, false, false,  \
-        NULL, NULL, NULL)
+        net_timeout_ms, proto_header_size, 0, task_arg_size, false, true,   \
+        false, NULL, NULL, NULL)
 
 int sf_service_destroy_ex(SFContext *sf_context);
 
@@ -162,6 +164,11 @@ static inline struct fast_task_info *sf_alloc_init_task_ex(
         return NULL;
     }
 
+    if (task->shrinked) {
+        task->shrinked = false;
+        sf_proto_init_task_magic(task);
+    }
+
     __sync_add_and_fetch(&task->reffer_count, reffer_count);
     __sync_bool_compare_and_swap(&task->canceled, 1, 0);
     task->handler = handler;