1 files changed, 6 insertions, 0 deletions
diff --git a/src/netbase.cpp b/src/netbase.cpp
index 9b63d60342..1635957b7f 100644
--- a/src/netbase.cpp
+++ b/src/netbase.cpp
@@ -465,6 +465,12 @@ SOCKET CreateSocket(const CService &addrConnect)
     if (hSocket == INVALID_SOCKET)
         return INVALID_SOCKET;
 
+    if (!IsSelectableSocket(hSocket)) {
+        CloseSocket(hSocket);
+        LogPrintf("Cannot create connection: non-selectable socket created (fd >= FD_SETSIZE ?)\n");
+        return INVALID_SOCKET;
+    }
+
 #ifdef SO_NOSIGPIPE
     int set = 1;
     // Different way of disabling SIGPIPE on BSD