diff --git a/c/src/test.c b/c/src/test.c
index aabdc09..fa7aa0d 100644
--- a/c/src/test.c
+++ b/c/src/test.c
@@ -56,7 +56,7 @@ int main(int argc, char **argv)
 
         printf("return :%s\n",loginUserID);
     char operationID1[] = "12345,create";
-    char *message = create_text_message(operationID1, "哈哈");
+    char *message = create_text_message(operationID1, "hello");
     printf("return :%s\n",message);
     char operationID2[] = "12345,get_all_conversation_list";
     get_all_conversation_list(c_base_callback, operationID2);
diff --git a/scripts/openimsdkcc.h b/cpp/include/libopenimsdkcc.h
similarity index 97%
rename from scripts/openimsdkcc.h
rename to cpp/include/libopenimsdkcc.h
index 12dcc89..4f97ea2 100644
--- a/scripts/openimsdkcc.h
+++ b/cpp/include/libopenimsdkcc.h
@@ -1,6 +1,6 @@
 #pragma once
 
-#include "openimsdk.h"
+#include "libopenimsdk.h"
 #include <functional>
 #include <string>
 #include <memory>
@@ -145,7 +145,8 @@ public:
   void GetAdvancedHistoryMessageList(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& getAdvancedHistoryCallback , const std::string& operationID, const std::string& getMessageOptions);
 
   // send message
-  void SendMessage(const std::function<void(const std::string&, int, const std::string&, const std::string&, int)>& callback, const std::string& operationID, const std::string& message, const std::string& recvID, const std::string& groupID, const std::string& offlinePushInfo);
+  void SendMessage(const std::function<void(const std::string&, int, const std::string&, const std::string&, int)>& callback, const std::string& operationID,
+  const std::string& message, const std::string& recvID, const std::string& groupID, const std::string& offlinePushInfo,bool isOnlineOnly);
 
   // // =====================================================user===============================================
   // //
@@ -226,6 +227,10 @@ public:
   // remove black
   void RemoveBlack(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID, const std::string& removeUserID);
 
+  // set friends ex
+  void SetFriendsEx(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback,
+  const std::string& operationID, const std::string& friendIDs,const std::string& ex);
+
 
   // // =====================================================group===============================================
   // // 
@@ -234,7 +239,7 @@ public:
   void CreateGroup(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID, const std::string& groupReqInfo);
 
   // join group
-  void JoinGroup(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID, const std::string& groupID, const std::string& reqMsg, int joinSource);
+  void JoinGroup(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID, const std::string& groupID, const std::string& reqMsg, int joinSource,const std::string& ex);
 
   // quit group
   void QuitGroup(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID, const std::string& groupID);
diff --git a/scripts/wrapp_cpp_function.inc b/cpp/include/wrapp_cpp_function.inc
similarity index 94%
rename from scripts/wrapp_cpp_function.inc
rename to cpp/include/wrapp_cpp_function.inc
index 7a615b8..61e1f92 100644
--- a/scripts/wrapp_cpp_function.inc
+++ b/cpp/include/wrapp_cpp_function.inc
@@ -1,3 +1,13 @@
+/*
+Using C++ template functions and recursion to initialize a function pointer pool,
+combined with lambda expressions, this implementation manages function pointers,
+achieving acquisition and release of pointers.All wrappers are used to convert
+and map C++ functions to C functions, and with the use of indexed locking,
+a thread-safe function pointer pool is implemented.For example, the wrapping
+functions essentially map C++ functions to C functions. When a C function callback is triggered,
+the function pointer pool, initialized through template recursion, locates the corresponding C++ function and invokes it.
+*/
+
 #define MAX_NUM_OF_CB_S 10
 #define MAX_NUM_OF_CB_I_S 10
 #define MAX_NUM_OF_CB_S_I_S_S 10
diff --git a/scripts/openimsdkcc.cc b/cpp/src/libopenimsdkcc.cc
similarity index 97%
rename from scripts/openimsdkcc.cc
rename to cpp/src/libopenimsdkcc.cc
index 9d66546..c47cb85 100644
--- a/scripts/openimsdkcc.cc
+++ b/cpp/src/libopenimsdkcc.cc
@@ -1,6 +1,6 @@
-#include "openimsdkcc.h"
+#include "../include/libopenimsdk.h"
 
-#include "wrapp_cpp_function.inc"
+#include "../include/wrapp_cpp_function.inc"
 
 namespace openim {
 
@@ -407,14 +407,16 @@ void OpenIMManager::GetAdvancedHistoryMessageList(const std::function<void(const
 }
 
 // send message
-void SendMessage(const std::function<void(const std::string&, int, const std::string&, const std::string&,int)>& sendMessageCallback, const std::string& operationID, const std::string& message,const std::string& recvID,const std::string& groupID,const std::string& offlinePushInfo)
+void SendMessage(const std::function<void(const std::string&, int, const std::string&, const std::string&,int)>& sendMessageCallback,
+const std::string& operationID, const std::string& message,const std::string& recvID,const std::string& groupID,const std::string& offlinePushInfo,bool isOnlineOnly)
 {
   char* operationID_cs=const_cast<char*>(operationID.c_str());
   char* message_cs=const_cast<char*>(message.c_str());
   char* recvID_cs=const_cast<char*>(recvID.c_str());
   char* groupID_cs=const_cast<char*>(groupID.c_str());
   char* offlinePushInfo_cs=const_cast<char*>(offlinePushInfo.c_str());
-  send_message(_wrapper_callonce_cpp_function(sendMessageCallback),operationID_cs,message_cs,recvID_cs,groupID_cs,offlinePushInfo_cs);
+  int isOnlineOnly_c = isOnlineOnly ? 1 : 0;
+  send_message(_wrapper_callonce_cpp_function(sendMessageCallback),operationID_cs,message_cs,recvID_cs,groupID_cs,offlinePushInfo_cs,isOnlineOnly_c);
 }
 
 // // ===================================================== user ===============================================
@@ -588,11 +590,13 @@ void OpenIMManager::RefuseFriendApplication(const std::function<void(const std::
 }
 
 // add black
-void OpenIMManager::AddBlack(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback,const std::string& operationID, const std::string& userIDs)
+void OpenIMManager::AddBlack(const std::function<void(const std::string&, int, const std::string&,
+ const std::string&)>& callback,const std::string& operationID, const std::string& userIDs,const std::string& ex)
 {
   char* operationID_cs=const_cast<char*>(operationID.c_str());
   char* userIDs_cs=const_cast<char*>(userIDs.c_str());
-  add_black(_wrapper_callonce_cpp_function(callback),operationID_cs,userIDs_cs);
+  char* ex_cs = const_cast<char*>(ex.c_str());
+  add_black(_wrapper_callonce_cpp_function(callback),operationID_cs,userIDs_cs,ex_cs);
 }
 
 // get black list
@@ -610,6 +614,15 @@ void OpenIMManager::RemoveBlack(const std::function<void(const std::string&, int
   remove_black(_wrapper_callonce_cpp_function(callback),operationID_cs,userIDs_cs);
 }
 
+// set friends ex
+void OpenIMManager::SetFriendsEx(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID,const std::string& friendIDs, const std::string& ex)
+{
+  char* operationID_cs=const_cast<char*>(operationID.c_str());
+  char* friendIDs_cs=const_cast<char*>(friendIDs.c_str());
+  char* ex_cs=const_cast<char*>(ex.c_str());
+  set_friends_ex(_wrapper_callonce_cpp_function(callback),operationID_cs,friendIDs_cs,ex_cs);
+}
+
 // // ===================================================== group ===============================================
 // // 
 
@@ -622,12 +635,14 @@ void OpenIMManager::CreateGroup(const std::function<void(const std::string&, int
 }
 
 // join group
-void OpenIMManager::JoinGroup(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback, const std::string& operationID, const std::string& groupID, const std::string& reqMsg, int joinSource)
+void OpenIMManager::JoinGroup(const std::function<void(const std::string&, int, const std::string&, const std::string&)>& callback,
+ const std::string& operationID, const std::string& groupID, const std::string& reqMsg, int joinSource,const std::string& ex)
 {
   char* operationID_cs=const_cast<char*>(operationID.c_str());
   char* groupID_cs=const_cast<char*>(groupID.c_str());
   char* reqMsg_cs=const_cast<char*>(reqMsg.c_str());
-  join_group(_wrapper_callonce_cpp_function(callback),operationID_cs,groupID_cs,reqMsg_cs,joinSource);
+  char* ex_cs = const_cast<char*>(ex.c_str());
+  join_group(_wrapper_callonce_cpp_function(callback),operationID_cs,groupID_cs,reqMsg_cs,joinSource,ex_cs);
 }
 
 // quit group
diff --git a/go/export.go b/go/export.go
index 58066b2..6820793 100644
--- a/go/export.go
+++ b/go/export.go
@@ -594,6 +594,12 @@ func set_conversation_is_msg_destruct(cCallback C.CB_S_I_S_S, operationID *C.cha
 	open_im_sdk.SetConversationIsMsgDestruct(baseCallback, C.GoString(operationID), C.GoString(conversationID), parseBool(int(isMsgDestruct)))
 }
 
+//export set_conversation_ex
+func set_conversation_ex(cCallback C.CB_S_I_S_S, operationID *C.char, conversationID *C.char, ex *C.char) {
+	baseCallback := NewBaseCallback(cCallback, operationID)
+	open_im_sdk.SetConversationEx(baseCallback, C.GoString(operationID), C.GoString(conversationID), C.GoString(ex))
+}
+
 //export hide_conversation
 func hide_conversation(cCallback C.CB_S_I_S_S, operationID *C.char, conversationID *C.char) {
 	baseCallback := NewBaseCallback(cCallback, operationID)
@@ -935,6 +941,12 @@ func remove_black(cCallback C.CB_S_I_S_S, operationID *C.char, removeUserID *C.c
 	open_im_sdk.RemoveBlack(baseCallback, C.GoString(operationID), C.GoString(removeUserID))
 }
 
+//export set_friends_ex
+func set_friends_ex(cCallback C.CB_S_I_S_S, operationID, friendIDs, ex *C.char) {
+	baseCallback := NewBaseCallback(cCallback, operationID)
+	open_im_sdk.SetFriendsEx(baseCallback, C.GoString(operationID), C.GoString(friendIDs), ex)
+}
+
 // =====================================================group===============================================
 // CreateGroup creates a group
 //