Add TCP_INFO availability check

ros · Dec 22, 2017 · 9c2365d · 9c2365d
1 parent bc33f0c
commit 9c2365d
Showing 1 changed file with 12 additions and 11 deletions.
diff --git a/tools/rosmaster/src/rosmaster/util.py b/tools/rosmaster/src/rosmaster/util.py
@@ -70,17 +70,18 @@ def xmlrpcapi(uri):
 
 
 def close_half_closed_sockets():
-    for proxy in _proxies.values():
-        transport = proxy("transport")
-        if transport._connection and transport._connection[1] is not None and transport._connection[1].sock is not None:
-            try:
-                state = transport._connection[1].sock.getsockopt(socket.SOL_TCP, socket.TCP_INFO)
-            except socket.error as e: # catch [Errno 92] Protocol not available
-                if e.args[0] is errno.ENOPROTOOPT:
-                    return
-                raise
-            if state == 8:  # CLOSE_WAIT
-                transport.close()
+    if hasattr(socket, 'TCP_INFO'):
+        for proxy in _proxies.values():
+            transport = proxy("transport")
+            if transport._connection and transport._connection[1] is not None and transport._connection[1].sock is not None:
+                try:
+                    state = transport._connection[1].sock.getsockopt(socket.SOL_TCP, socket.TCP_INFO)
+                except socket.error as e: # catch [Errno 92] Protocol not available
+                    if e.args[0] is errno.ENOPROTOOPT:
+                        return
+                    raise
+                if state == 8:  # CLOSE_WAIT
+                    transport.close()
 
 
 def remove_server_proxy(uri):