diff --git a/das-dn/third_party/AdsLib/Sockets.cpp b/das-dn/third_party/AdsLib/Sockets.cpp
index 57cd12c0..981591f3 100644
--- a/das-dn/third_party/AdsLib/Sockets.cpp
+++ b/das-dn/third_party/AdsLib/Sockets.cpp
@@ -218,6 +218,9 @@ size_t Socket::write(const Frame& frame) const
         LOG_ERROR("frame length: " << frame.size() << " exceeds maximum length for sockets");
         return 0;
     }
+    if (m_Socket == INVALID_SOCKET) return 0;
+    if (m_DestAddr == 0) return 0;
+    if (m_DestAddrLen <= 0) return 0;
 
     const int bufferLength = static_cast<int>(frame.size());
     const char* const buffer = reinterpret_cast<const char*>(frame.data());