use asio strand to keep the order of data (#838)

Co-authored-by: Yabin Li <wucong.lyb@alibaba-inc.com>

funasr/runtime/websocket/websocket-server-2pass.cpp

@@ -203,6 +203,12 @@ void WebSocketServer::on_open(websocketpp::connection_hdl hdl) {
     data_msg->msg["is_eof"]=false; // if this connection is closed
     data_msg->punc_cache =
         std::make_shared<std::vector<std::vector<std::string>>>(2);
+  	data_msg->strand_ =	std::make_shared<asio::io_context::strand>(io_decoder_);
+    // std::vector<int> chunk_size = {5, 10, 5};  //TODO, need get from client
+    // FUNASR_HANDLE tpass_online_handle =
+    //     FunTpassOnlineInit(tpass_handle, chunk_size);
+    // data_msg->tpass_online_handle = tpass_online_handle;
+
     data_map.emplace(hdl, data_msg);
     // LOG(INFO) << "on_open, active connections: " << data_map.size();
   }catch (std::exception const& e) {
@@ -294,7 +300,8 @@ void WebSocketServer::check_and_clean_connection() {
     }
     for (auto hdl : to_remove) {
       remove_hdl(hdl, data_map);
-      // LOG(INFO) << "remove one connection ";
+      //LOG(INFO) << "remove one connection ";
+
     }
   }
 }
@@ -360,8 +367,8 @@ void WebSocketServer::on_message(websocketpp::connection_hdl hdl,
 
         // if it is in final message, post the sample_data to decode
         try{
-          asio::post(
-              io_decoder_,
+		  
+          msg_data->strand_->post(
               std::bind(&WebSocketServer::do_decoder, this,
                         std::move(*(sample_data_p.get())), std::move(hdl),
                         std::ref(msg_data->msg), std::ref(*(punc_cache_p.get())),
@@ -400,7 +407,7 @@ void WebSocketServer::on_message(websocketpp::connection_hdl hdl,
 
           try{
             // post to decode
-            asio::post(io_decoder_,
+            msg_data->strand_->post( 
                       std::bind(&WebSocketServer::do_decoder, this,
                                 std::move(subvector), std::move(hdl),
                                 std::ref(msg_data->msg),

funasr/runtime/websocket/websocket-server-2pass.h

@@ -58,7 +58,7 @@ typedef struct {
   FUNASR_HANDLE tpass_online_handle=NULL;
   std::string online_res = "";
   std::string tpass_res = "";
-  
+  std::shared_ptr<asio::io_context::strand>  strand_; // for data execute in order 
 } FUNASR_MESSAGE;
 
 // See https://wiki.mozilla.org/Security/Server_Side_TLS for more details about