Hi Fujimoto,

You are correct almost. There is a no duplicate datapath, but I think a second connection request came from the same switch after some time. Initially all my 25 switch got connected to my controller, after running for some time controller got another connection request form the switch with datapath_id=5253150801927 (line no 322 to 330 in the log file). First connection request of the same switch is in the log at line no 88-96. I am attaching the log of first 500 lines removing some unnecessary message for your reference. I hope it will help you understand the problem better.

Thank you!

Regards,
Tarun


Quoting Fujimoto Satoshi <satoshi.fujimo...@gmail.com>:

Hi, Tarun

I'm not sure, but it may be caused by the duplication of Datapath ID.
Could you confirm the Datapath IDs of your switches are not duplicated?

Thanks,
Fujimoto

On 2017年04月13日 07:59, Tarun Kumar Sarkar wrote:
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






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loading app flexfcpf/fcpf_ryu_controller.py
require_app: ryu.topology.switches is required by fcpf_ryu_controller
loading app ryu.topology.switches
loading app ryu.controller.ofp_handler
creating context wsgi
instantiating app ryu.topology.switches of Switches
instantiating app ryu.controller.ofp_handler of OFPHandler
instantiating app flexfcpf/fcpf_ryu_controller.py of FCPFControllerApplication
BRICK switches
  CONSUMES EventOFPStateChange
  CONSUMES EventHostRequest
  CONSUMES EventLinkRequest
  CONSUMES EventOFPPacketIn
  CONSUMES EventSwitchRequest
  CONSUMES EventOFPPortStatus
BRICK FCPFControllerApplication
  CONSUMES EventOFPSwitchFeatures
BRICK ofp_event
  PROVIDES EventOFPStateChange TO {'switches': set(['main', 'dead'])}
  PROVIDES EventOFPPacketIn TO {'switches': set(['main'])}
  PROVIDES EventOFPSwitchFeatures TO {'FCPFControllerApplication': 
set(['config'])}
  PROVIDES EventOFPPortStatus TO {'switches': set(['main'])}
  CONSUMES EventOFPSwitchFeatures
  CONSUMES EventOFPErrorMsg
  CONSUMES EventOFPPortDescStatsReply
  CONSUMES EventOFPHello
  CONSUMES EventOFPEchoReply
  CONSUMES EventOFPPortStatus
  CONSUMES EventOFPEchoRequest
(7849) wsgi starting up on http://0.0.0.0:8080
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c14ef90> 
address:('127.0.0.1', 59450)
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c162390>
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c162750> 
address:('127.0.0.1', 59452)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c162f90>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x7636ec63,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=982645735425,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c162790>
register Switch<dpid=982645735425, Port<dpid=982645735425, port_no=1, LIVE> 
Port<dpid=982645735425, port_no=2, LIVE> Port<dpid=982645735425, port_no=3, 
LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c14e390> 
address:('127.0.0.1', 59454)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0fca90>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xbcffb421,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=9048173838338,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c162a50>
register Switch<dpid=9048173838338, Port<dpid=9048173838338, port_no=1, LIVE> 
Port<dpid=9048173838338, port_no=2, LIVE> Port<dpid=9048173838338, port_no=3, 
LIVE> Port<dpid=9048173838338, port_no=4, LIVE> Port<dpid=9048173838338, 
port_no=5, LIVE> Port<dpid=9048173838338, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0fc990> 
address:('127.0.0.1', 59456)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c1185d0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xd0ab8b83,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5710751465475,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c162f10>
register Switch<dpid=5710751465475, Port<dpid=5710751465475, port_no=1, LIVE> 
Port<dpid=5710751465475, port_no=2, LIVE> Port<dpid=5710751465475, port_no=3, 
LIVE> Port<dpid=5710751465475, port_no=4, LIVE> Port<dpid=5710751465475, 
port_no=5, LIVE> Port<dpid=5710751465475, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c1187d0> 
address:('127.0.0.1', 59458)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c125650>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x5f6d4aba,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=1725788323844,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c118110>
register Switch<dpid=1725788323844, Port<dpid=1725788323844, port_no=1, LIVE> 
Port<dpid=1725788323844, port_no=2, LIVE> Port<dpid=1725788323844, port_no=3, 
LIVE> Port<dpid=1725788323844, port_no=4, LIVE> Port<dpid=1725788323844, 
port_no=5, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c1259d0> 
address:('127.0.0.1', 59460)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0b2590>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x9c8b1268,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=2572851085317,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c118cd0>
register Switch<dpid=2572851085317, Port<dpid=2572851085317, port_no=1, LIVE> 
Port<dpid=2572851085317, port_no=2, LIVE> Port<dpid=2572851085317, port_no=3, 
LIVE> Port<dpid=2572851085317, port_no=4, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c125350> 
address:('127.0.0.1', 59462)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0bd290>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x4b7e9b8,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=15413769404422,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c1258d0>
register Switch<dpid=15413769404422, Port<dpid=15413769404422, port_no=1, LIVE> 
Port<dpid=15413769404422, port_no=2, LIVE> Port<dpid=15413769404422, port_no=3, 
LIVE> Port<dpid=15413769404422, port_no=4, LIVE> Port<dpid=15413769404422, 
port_no=5, LIVE> Port<dpid=15413769404422, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0b2950> 
address:('127.0.0.1', 59464)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0c9850>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x75e1dce9,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5253150801927,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0b2f10>
register Switch<dpid=5253150801927, Port<dpid=5253150801927, port_no=1, LIVE> 
Port<dpid=5253150801927, port_no=2, LIVE> Port<dpid=5253150801927, port_no=3, 
LIVE> Port<dpid=5253150801927, port_no=4, LIVE> Port<dpid=5253150801927, 
port_no=5, LIVE> Port<dpid=5253150801927, port_no=6, LIVE> 
Port<dpid=5253150801927, port_no=7, LIVE> Port<dpid=5253150801927, port_no=8, 
LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0bd7d0> 
address:('127.0.0.1', 59466)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0d8a10>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x9631f58e,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=13160219148296,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c125250>
register Switch<dpid=13160219148296, Port<dpid=13160219148296, port_no=1, LIVE> 
Port<dpid=13160219148296, port_no=2, LIVE> Port<dpid=13160219148296, port_no=3, 
LIVE> Port<dpid=13160219148296, port_no=4, LIVE> Port<dpid=13160219148296, 
port_no=5, LIVE> Port<dpid=13160219148296, port_no=6, LIVE> 
Port<dpid=13160219148296, port_no=7, LIVE> Port<dpid=13160219148296, port_no=8, 
LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0c9f90> 
address:('127.0.0.1', 59468)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0e4610>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x2d3c009e,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=12021591441417,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0c9d50>
register Switch<dpid=12021591441417, Port<dpid=12021591441417, port_no=1, LIVE> 
Port<dpid=12021591441417, port_no=2, LIVE> Port<dpid=12021591441417, port_no=3, 
LIVE> Port<dpid=12021591441417, port_no=4, LIVE> Port<dpid=12021591441417, 
port_no=5, LIVE> Port<dpid=12021591441417, port_no=6, LIVE> 
Port<dpid=12021591441417, port_no=7, LIVE> Port<dpid=12021591441417, port_no=8, 
LIVE> Port<dpid=12021591441417, port_no=9, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0c9190> 
address:('127.0.0.1', 59470)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c079350>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x49ffee66,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=9197083164682,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c118a10>
register Switch<dpid=9197083164682, Port<dpid=9197083164682, port_no=1, LIVE> 
Port<dpid=9197083164682, port_no=2, LIVE> Port<dpid=9197083164682, port_no=3, 
LIVE> Port<dpid=9197083164682, port_no=4, LIVE> Port<dpid=9197083164682, 
port_no=5, LIVE> Port<dpid=9197083164682, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0c9d90> 
address:('127.0.0.1', 59472)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c085850>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x7b3f6565,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=7920412524555,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0d8d10>
register Switch<dpid=7920412524555, Port<dpid=7920412524555, port_no=1, LIVE> 
Port<dpid=7920412524555, port_no=2, LIVE> Port<dpid=7920412524555, port_no=3, 
LIVE> Port<dpid=7920412524555, port_no=4, LIVE> Port<dpid=7920412524555, 
port_no=5, LIVE> Port<dpid=7920412524555, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c085ed0> 
address:('127.0.0.1', 59474)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c092950>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xd603152f,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=12548474667020,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0d8f10>
register Switch<dpid=12548474667020, Port<dpid=12548474667020, port_no=1, LIVE> 
Port<dpid=12548474667020, port_no=2, LIVE> Port<dpid=12548474667020, port_no=3, 
LIVE> Port<dpid=12548474667020, port_no=4, LIVE> Port<dpid=12548474667020, 
port_no=5, LIVE> Port<dpid=12548474667020, port_no=6, LIVE> 
Port<dpid=12548474667020, port_no=7, LIVE> Port<dpid=12548474667020, port_no=8, 
LIVE> Port<dpid=12548474667020, port_no=9, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0793d0> 
address:('127.0.0.1', 59476)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c09eb90>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x5b33105b,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=4005807783949,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c079a10>
register Switch<dpid=4005807783949, Port<dpid=4005807783949, port_no=1, LIVE> 
Port<dpid=4005807783949, port_no=2, LIVE> Port<dpid=4005807783949, port_no=3, 
LIVE> Port<dpid=4005807783949, port_no=4, LIVE> Port<dpid=4005807783949, 
port_no=5, LIVE> Port<dpid=4005807783949, port_no=6, LIVE> 
Port<dpid=4005807783949, port_no=7, LIVE> Port<dpid=4005807783949, port_no=8, 
LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c079810> 
address:('127.0.0.1', 59478)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c02ea10>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x9b338b53,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=387723558926,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c079c90>
register Switch<dpid=387723558926, Port<dpid=387723558926, port_no=1, LIVE> 
Port<dpid=387723558926, port_no=2, LIVE> Port<dpid=387723558926, port_no=3, 
LIVE> Port<dpid=387723558926, port_no=4, LIVE> Port<dpid=387723558926, 
port_no=5, LIVE> Port<dpid=387723558926, port_no=6, LIVE> 
Port<dpid=387723558926, port_no=7, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c02edd0> 
address:('127.0.0.1', 59480)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0387d0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x13cd4722,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=17374420926479,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c085790>
register Switch<dpid=17374420926479, Port<dpid=17374420926479, port_no=1, LIVE> 
Port<dpid=17374420926479, port_no=2, LIVE> Port<dpid=17374420926479, port_no=3, 
LIVE> Port<dpid=17374420926479, port_no=4, LIVE> Port<dpid=17374420926479, 
port_no=5, LIVE> Port<dpid=17374420926479, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0bdf10> 
address:('127.0.0.1', 59482)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c047250>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x945433b,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5352351334416,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c02e050>
register Switch<dpid=5352351334416, Port<dpid=5352351334416, port_no=1, LIVE> 
Port<dpid=5352351334416, port_no=2, LIVE> Port<dpid=5352351334416, port_no=3, 
LIVE> Port<dpid=5352351334416, port_no=4, LIVE> Port<dpid=5352351334416, 
port_no=5, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c047790> 
address:('127.0.0.1', 59484)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c051d50>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xb6c520e6,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=30582180413457,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c085990>
register Switch<dpid=30582180413457, Port<dpid=30582180413457, port_no=1, LIVE> 
Port<dpid=30582180413457, port_no=2, LIVE> Port<dpid=30582180413457, port_no=3, 
LIVE> Port<dpid=30582180413457, port_no=4, LIVE> Port<dpid=30582180413457, 
port_no=5, LIVE> Port<dpid=30582180413457, port_no=6, LIVE> 
Port<dpid=30582180413457, port_no=7, LIVE> Port<dpid=30582180413457, port_no=8, 
LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c064550> 
address:('127.0.0.1', 59486)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bffa750>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x5e913fd8,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=279620104486930,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c047bd0>
register Switch<dpid=279620104486930, Port<dpid=279620104486930, port_no=1, 
LIVE> Port<dpid=279620104486930, port_no=2, LIVE> Port<dpid=279620104486930, 
port_no=3, LIVE> Port<dpid=279620104486930, port_no=4, LIVE> 
Port<dpid=279620104486930, port_no=5, LIVE> Port<dpid=279620104486930, 
port_no=6, LIVE> Port<dpid=279620104486930, port_no=7, LIVE> 
Port<dpid=279620104486930, port_no=8, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c064690> 
address:('127.0.0.1', 59488)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0008d0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xee00e3a1,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=68660135723027,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0517d0>
register Switch<dpid=68660135723027, Port<dpid=68660135723027, port_no=1, LIVE> 
Port<dpid=68660135723027, port_no=2, LIVE> Port<dpid=68660135723027, port_no=3, 
LIVE> Port<dpid=68660135723027, port_no=4, LIVE> Port<dpid=68660135723027, 
port_no=5, LIVE> Port<dpid=68660135723027, port_no=6, LIVE> 
Port<dpid=68660135723027, port_no=7, LIVE> Port<dpid=68660135723027, port_no=8, 
LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0e4a90> 
address:('127.0.0.1', 59490)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c016dd0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xcbdff2,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=248413174104084,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0fce90>
register Switch<dpid=248413174104084, Port<dpid=248413174104084, port_no=1, 
LIVE> Port<dpid=248413174104084, port_no=2, LIVE> Port<dpid=248413174104084, 
port_no=3, LIVE> Port<dpid=248413174104084, port_no=4, LIVE> 
Port<dpid=248413174104084, port_no=5, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c016150> 
address:('127.0.0.1', 59492)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0253d0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x4526d485,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=211339721048085,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c0fced0>
register Switch<dpid=211339721048085, Port<dpid=211339721048085, port_no=1, 
LIVE> Port<dpid=211339721048085, port_no=2, LIVE> Port<dpid=211339721048085, 
port_no=3, LIVE> Port<dpid=211339721048085, port_no=4, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c0641d0> 
address:('127.0.0.1', 59494)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bffa550>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x69df8e26,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=151003684929558,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c051210>
register Switch<dpid=151003684929558, Port<dpid=151003684929558, port_no=1, 
LIVE> Port<dpid=151003684929558, port_no=2, LIVE> Port<dpid=151003684929558, 
port_no=3, LIVE> Port<dpid=151003684929558, port_no=4, LIVE> 
Port<dpid=151003684929558, port_no=5, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92bfb4150> 
address:('127.0.0.1', 59496)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bfcc350>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xbdfb530b,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=247836759293975,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c000210>
register Switch<dpid=247836759293975, Port<dpid=247836759293975, port_no=1, 
LIVE> Port<dpid=247836759293975, port_no=2, LIVE> Port<dpid=247836759293975, 
port_no=3, LIVE> Port<dpid=247836759293975, port_no=4, LIVE> 
Port<dpid=247836759293975, port_no=5, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c05afd0> 
address:('127.0.0.1', 59498)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bfdb3d0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x3fec9ce9,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=59307123015704,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c05a390>
register Switch<dpid=59307123015704, Port<dpid=59307123015704, port_no=1, LIVE> 
Port<dpid=59307123015704, port_no=2, LIVE> Port<dpid=59307123015704, port_no=3, 
LIVE> Port<dpid=59307123015704, port_no=4, LIVE> Port<dpid=59307123015704, 
port_no=5, LIVE> Port<dpid=59307123015704, port_no=6, LIVE> >
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c05abd0> 
address:('127.0.0.1', 59500)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bfedd90>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x984263e1,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=9023675957273,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c05add0>
register Switch<dpid=9023675957273, Port<dpid=9023675957273, port_no=1, LIVE> 
Port<dpid=9023675957273, port_no=2, LIVE> Port<dpid=9023675957273, port_no=3, 
LIVE> Port<dpid=9023675957273, port_no=4, LIVE> >
(7849) accepted ('127.0.0.1', 56176)
EVENT FCPFControllerApplication->switches EventLinkRequest
127.0.0.1 - - [12/Apr/2017 22:20:15] "GET /fcpfcontroller/topology/links 
HTTP/1.1" 200 29389 0.009386
(7849) accepted ('127.0.0.1', 56178)
127.0.0.1 - - [12/Apr/2017 22:20:25] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.079781
(7849) accepted ('127.0.0.1', 56180)
127.0.0.1 - - [12/Apr/2017 22:20:25] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.001493
(7849) accepted ('127.0.0.1', 56182)
127.0.0.1 - - [12/Apr/2017 22:21:34] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.263244
(7849) accepted ('127.0.0.1', 56184)
127.0.0.1 - - [12/Apr/2017 22:21:35] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.000905
(7849) accepted ('127.0.0.1', 56186)
127.0.0.1 - - [12/Apr/2017 22:22:28] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.211071
(7849) accepted ('127.0.0.1', 56188)
127.0.0.1 - - [12/Apr/2017 22:22:29] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.059120
(7849) accepted ('127.0.0.1', 56190)
127.0.0.1 - - [12/Apr/2017 22:22:49] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.058500
(7849) accepted ('127.0.0.1', 56192)
127.0.0.1 - - [12/Apr/2017 22:22:49] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.070679
(7849) accepted ('127.0.0.1', 56194)
127.0.0.1 - - [12/Apr/2017 22:24:09] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.382435
(7849) accepted ('127.0.0.1', 56196)
127.0.0.1 - - [12/Apr/2017 22:24:09] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.196597
(7849) accepted ('127.0.0.1', 56198)
127.0.0.1 - - [12/Apr/2017 22:25:01] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.061896
(7849) accepted ('127.0.0.1', 56200)
127.0.0.1 - - [12/Apr/2017 22:25:01] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.080328
(7849) accepted ('127.0.0.1', 56202)
127.0.0.1 - - [12/Apr/2017 22:29:13] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.077071
(7849) accepted ('127.0.0.1', 56204)
127.0.0.1 - - [12/Apr/2017 22:29:13] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.079621
(7849) accepted ('127.0.0.1', 56206)
127.0.0.1 - - [12/Apr/2017 22:29:21] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.142893
(7849) accepted ('127.0.0.1', 56208)
127.0.0.1 - - [12/Apr/2017 22:29:21] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.006631
(7849) accepted ('127.0.0.1', 56210)
127.0.0.1 - - [12/Apr/2017 22:29:36] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.410678
(7849) accepted ('127.0.0.1', 56212)
127.0.0.1 - - [12/Apr/2017 22:29:36] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.015868
(7849) accepted ('127.0.0.1', 56214)
127.0.0.1 - - [12/Apr/2017 22:29:49] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.005678
(7849) accepted ('127.0.0.1', 56216)
127.0.0.1 - - [12/Apr/2017 22:29:49] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.012918
(7849) accepted ('127.0.0.1', 56218)
127.0.0.1 - - [12/Apr/2017 22:29:57] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.013429
(7849) accepted ('127.0.0.1', 56220)
127.0.0.1 - - [12/Apr/2017 22:29:57] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.004989
(7849) accepted ('127.0.0.1', 56222)
127.0.0.1 - - [12/Apr/2017 22:30:43] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.515688
(7849) accepted ('127.0.0.1', 56224)
127.0.0.1 - - [12/Apr/2017 22:30:43] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.040702
(7849) accepted ('127.0.0.1', 56226)
127.0.0.1 - - [12/Apr/2017 22:30:56] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.000418
(7849) accepted ('127.0.0.1', 56228)
127.0.0.1 - - [12/Apr/2017 22:30:56] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.020424
(7849) accepted ('127.0.0.1', 56230)
127.0.0.1 - - [12/Apr/2017 22:32:00] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.111645
(7849) accepted ('127.0.0.1', 56232)
127.0.0.1 - - [12/Apr/2017 22:32:02] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 1.843815
(7849) accepted ('127.0.0.1', 56234)
127.0.0.1 - - [12/Apr/2017 22:32:08] "PUT /fcpfcontroller/flowtable/addflows 
HTTP/1.1" 200 115 0.012849
(7849) accepted ('127.0.0.1', 56236)
127.0.0.1 - - [12/Apr/2017 22:32:09] "PUT /fcpfcontroller/flowtable/delflows 
HTTP/1.1" 200 115 0.000766
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92bfe7590> 
address:('127.0.0.1', 59564)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bf5fbd0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xcb107394,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5253150801927,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
<ryu.controller.controller.Datapath object at 0x7fb92c051390>
Multiple connections from 000004c718300007
EVENT ofp_event->switches EventOFPStateChange
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.
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
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.
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.
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
Socket error while sending data to switch at address ('127.0.0.1', 59498): 
[104] Connection reset by peer
EVENT ofp_event->switches EventOFPStateChange
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
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.
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92d4c1050> 
address:('127.0.0.1', 59568)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bf4ac10>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xb15ac624,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5253150801927,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92c064410> 
address:('127.0.0.1', 59570)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92c0e46d0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xa5acaa68,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=59307123015704,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
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.
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.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
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.
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 0x7fb92c0d8610> 
address:('127.0.0.1', 59572)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bf32c10>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0x59f81de7,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5253150801927,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
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.
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.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92bfdbc10> 
address:('127.0.0.1', 59574)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bf14f50>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xeaa85107,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=59307123015704,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
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.
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.
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.
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59498) discarded.
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92bf32c10> 
address:('127.0.0.1', 59576)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bf82510>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xddcdfa04,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=5253150801927,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
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.
Datapath in process of terminating; send() to ('127.0.0.1', 59464) discarded.
connected socket:<eventlet.greenio.base.GreenSocket object at 0x7fb92bf82a90> 
address:('127.0.0.1', 59578)
hello ev <ryu.controller.ofp_event.EventOFPHello object at 0x7fb92bf5bfd0>
move onto config mode
EVENT ofp_event->FCPFControllerApplication EventOFPSwitchFeatures
switch features ev 
version=0x4,msg_type=0x6,msg_len=0x20,xid=0xdae9f864,OFPSwitchFeatures(auxiliary_id=0,capabilities=71,datapath_id=59307123015704,n_buffers=256,n_tables=254)
move onto main mode
EVENT ofp_event->switches EventOFPStateChange
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.

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