Dear Team, Could anyone please suggest me how to solve the problem?
BACKGROUND:: I am running a custom controller with wsgi option for accepting REST call for adding and deleting switch forward entry. I am running around 25 switch in my network and my application communicate to the controller very frequently to modify the forwarding entries. After running it for an hour or so I am geeting the belwo issue. ISSUE:: I am seeing many socket are in state of CLOSE_WAIT. I observed socket are starting to go in that state after getting a message like "Multiple connections from 000004c718300007". I tried the fix provided in the link https://sourceforge.net/p/ryu/mailman/message/34320802/. @_deactivate def _recv_loop(self): buf = bytearray() count = 0 min_read_len = remaining_read_len = ofproto_common.OFP_HEADER_SIZE while self.state != DEAD_DISPATCHER: try: read_len = min_read_len if (remaining_read_len > min_read_len): read_len = remaining_read_len ret = self.socket.recv(read_len) if len(ret) == 0: self.is_active = False self.socket.close() break But it does not work for me. LOG:: Multiple connections from 000004c718300007 EVENT ofp_event->switches EventOFPStateChange EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded. EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded. Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded. connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92bf3b510> address:('127.0.0.1', 59566) hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bffa790> move onto config mode EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures switch features ev version=0x4,msg_type=0x6,msg_len=0x20,xid=0x45883c60,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=59307123015704,n_buffers=256,n_tables=254) move onto main mode EVENT ofp_event->switches EventOFPStateChange EVENT ofp_event->switches EventOFPPacketIn EVENT ofp_event->switches EventOFPPacketIn Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded. EVENT ofp_event->switches EventOFPPacketIn ..... ...... ... connected socket:<eventlet.greenio.base.GreenSocket object at 0x7f14b4826f50> address:('127.0.0.1', 57490) hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7f14b47da1d0> move onto config mode hub: uncaught exception: Traceback (most recent call last): File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 56, in _launch File "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line 100, in __call__ File "/usr/local/lib/python2.7/dist-packages/ryu/controller/controller.py", line 126, in server_loop File "/usr/local/lib/python2.7/dist-packages/ryu/lib/hub.py", line 136, in serve_forever File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 214, in accept File "/usr/local/lib/python2.7/dist-packages/eventlet/greenio/base.py", line 56, in socket_accept File "/usr/lib/python2.7/socket.py", line 202, in accept error: [Errno 24] Too many open files netstat shows something like python 7849 tarun 558u IPv4 103608559 0t0 TCP localhost:6633->localhost:60844 (CLOSE_WAIT) Regards, Tarun ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _______________________________________________ Ryu-devel mailing list Ryu-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ryu-devel
