Too many open files exception in TaskRunner / generate_packet()

[dspruell]

Exception raised after being alive for a few hours, possible resource leaks:

2017-10-10 11:30:00,749: AppServer (pid: 32413) - authenticated dispatch request from 127.0.0.1 with valid HMAC                                                                                             [0/772]
127.0.0.1 - - [10/Oct/2017 11:30:00] "GET /api/generate_probe?dest_addr=10.0.1.1&dest_port=5471&src_port=8573&proto=tcp&ts=1507660200.739729&h=8954e089e38b81b4ed31a0c7125b9086cc853565eb2723d21995a4f3d80803ed HTT
P/1.1" 200 -
Process TaskRunner:
Traceback (most recent call last):
  File "/usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/multiprocessing/process.py", line 258, in _bootstrap
    self.run()
  File "/usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/multiprocessing/process.py", line 93, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/DarrenSpruell/devel/external/ampt-generator/ampt_generator/cli.py", line 125, in ampt_gen_taskrunner
    packetgen.generate_packet(**packet)
  File "/Users/DarrenSpruell/devel/external/ampt-generator/ampt_generator/packetgen.py", line 41, in generate_packet
    send(packet)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/sendrecv.py", line 255, in send
    __gen_send(conf.L3socket(*args, **kargs), x, inter=inter, loop=loop, count=count,verbose=verbose, realtime=realtime)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/sendrecv.py", line 238, in __gen_send
    s.send(p)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/arch/pcapdnet.py", line 457, in send
    sx = bytes(cls()/x)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/packet.py", line 289, in __bytes__
    return self.build()
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/packet.py", line 357, in build
    p = self.do_build()
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/packet.py", line 346, in do_build
    pkt = self.self_build()
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/packet.py", line 337, in self_build
    p = f.addfield(self, p, val)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/fields.py", line 79, in addfield
    return s+struct.pack(self.fmt, self.i2m(pkt,val))
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/layers/l2.py", line 95, in i2m
    return MACField.i2m(self, pkt, self.i2h(pkt, x))
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/layers/l2.py", line 89, in i2h
    x = conf.neighbor.resolve(pkt,pkt.payload)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/layers/l2.py", line 38, in resolve
    return self.resolvers[k](l2inst,l3inst)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/layers/inet.py", line 855, in <lambda>
    conf.neighbor.register_l3(Ether, IP, lambda l2, l3: getmacbyip(l3.dst))
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/layers/l2.py", line 73, in getmacbyip
    nofilter=1)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/sendrecv.py", line 385, in srp1
    a,b=srp(*args,**kargs)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/sendrecv.py", line 368, in srp
    a,b=sndrcv(s ,x,*args,**kargs)
  File "/Users/DarrenSpruell/venv.d/ampt-generator/lib/python3.6/site-packages/scapy/sendrecv.py", line 73, in sndrcv
    rdpipe,wrpipe = os.pipe()
OSError: [Errno 24] Too many open files