diff --git a/das-dn/hostadsbf/hostadsbf.cpp b/das-dn/hostadsbf/hostadsbf.cpp
index 0234e32e..fc43ff6f 100644
--- a/das-dn/hostadsbf/hostadsbf.cpp
+++ b/das-dn/hostadsbf/hostadsbf.cpp
@@ -1092,6 +1092,11 @@ BOOLEAN CHostADSBFProcess::readRealData()
 
         AdsVariable<std::array<BYTE, MAX_BLOCKF_SIZE>> turbineData {*m_turbine, ADSIGRP_IOIMAGE_RWOB, m_adsOverviewDataMemAddr};
         pData = ((std::array<BYTE, MAX_BLOCKF_SIZE>)turbineData).data();
+        if (!m_turbine->IsConnected())
+        {
+            vLog(LOG_ERROR, "%s Read data error.\n", m_pidName.c_str());
+            return TRUE;
+        }
         
         WORD registerAddr = m_adsOverviewDataMemAddr;
 
diff --git a/das-dn/third_party/AdsLib/Sockets.cpp b/das-dn/third_party/AdsLib/Sockets.cpp
index b64bae53..a9059b83 100644
--- a/das-dn/third_party/AdsLib/Sockets.cpp
+++ b/das-dn/third_party/AdsLib/Sockets.cpp
@@ -153,6 +153,7 @@ Socket::Socket(const struct addrinfo* const host, const int type) :
 
 Socket::~Socket()
 {
+    LOG_ERROR("destroy socket\n");
     Shutdown();
 //    closesocket(m_Socket);
 
@@ -218,7 +219,7 @@ size_t Socket::read(uint8_t* buffer, size_t maxBytes, timeval* timeout)
     }
     m_LastError = WSAGetLastError();
     if ((0 == bytesRead) || (m_LastError == CONNECTION_CLOSED) || (m_LastError == CONNECTION_ABORTED)) {
-        LOG_INFO("Socket connection closed by remote with error: " << std::dec << std::strerror(m_LastError));
+        LOG_INFO("read error, Socket: " << m_Socket << " connection closed by remote with error: " << std::dec << std::strerror(m_LastError));
     } else {
         LOG_ERROR("Socket read frame failed with error: " << std::dec << std::strerror(m_LastError));
     }
@@ -289,7 +290,7 @@ size_t Socket::write(const Frame& frame)
     }
 
     if(0 == len){
-        LOG_INFO("Socket connection closed by remote with error: " << std::dec << std::strerror(m_LastError));
+        LOG_INFO("write error, Socket: " << m_Socket << " connection closed by remote with error: " << std::dec << std::strerror(m_LastError));
         Shutdown();
         return 0;
     }