+ limit = cfg.getint('limits',k)
+ self.__dict__[k] = min(req, limit)
+
+ self._pq = PacketQueue(self.max_queue_time)
+
+ if ip in clients:
+ raise ValueError('multiple client cfg sections for %s' % ip)
+ clients[ip] = self
+
+ def process_arriving_data(self, d):
+ for packet in slip.decode(d):
+ (saddr, daddr) = packet_addrs(packet)
+ if saddr != self._ip:
+ raise ValueError('wrong source address %s' % saddr)
+ route(packet, saddr, daddr)
+
+ def _req_cancel(self, request):
+ request.finish()
+
+ def _req_error(self, err, request):
+ self._req_cancel(request)
+
+ def queue_outbound(self, packet):
+ self._pq.append(packet)
+ self._check_outbound()
+
+ def http_request(self, request):
+ request.setHeader('Content-Type','application/octet-stream')
+ reactor.callLater(self.max_request_time, self._req_cancel, request)
+ request.notifyFinish().addErrback(self._req_error, request)
+ self._rq.append(request)
+ self._check_outbound()
+
+ def _check_outbound(self):
+ while True:
+ try: request = self._rq[0]
+ except IndexError: request = None
+ if request and request.finished:
+ self._rq.popleft()
+ continue
+
+ if not self._pq.nonempty():
+ # no packets, oh well
+ continue
+
+ if request is None:
+ # no request
+ break
+
+ # request, and also some non-expired packets
+ self._pq.process((lambda: request.sentLength),
+ request.write,
+ self.max_batch_down)
+
+ assert(request.sentLength)
+ self._rq.popleft()
+ request.finish()
+ # round again, looking for more to do
+
+ while len(self._rq) > self.target_requests_outstanding:
+ request = self._rq.popleft()
+ request.finish()
+
+def process_request(request):
+ # find client, update config, etc.
+ metadata = request.args['m']
+ (ci_s, pw, tro) = metadata.split(b'\n')[0:3]
+ ci = ipaddr(ci_s)
+ cl = clients[ci]
+ if pw != cl.pw: raise ValueError('bad password')
+
+ if pw != cl.target_requests_outstanding:
+ raise ...
+
+ try: d = request.args['d']
+ except KeyError: d = ''
+
+ cl.process_arriving_data(d)
+ cl.new_request(request)
+
+class IphttpResource(twisted.web.resource.Resource):
+ isLeaf = True
+ def render_POST(self, request):
+ try: process_request(request)
+ except Exception as e:
+ request.setHeader('Content-Type','text/plain; charset="utf-8"')
+ request.setResponseCode(400)
+ return str(e).encode('utf-8')
+
+ def render_GET(self, request):
+ return b'<html><body>hippotat</body></html>'
+
+def start_http():
+ resource = IphttpResource()
+ site = twisted.web.server.Site(resource)
+ for sa in c.saddrs:
+ ep = sa.make_endpoint()
+ crash_on_defer(ep.listen(site))
+
+#---------- config and setup ----------
+