def configSim(self):
"""
Method to configure a schc simulation, setting some important configurations and creating a node in the network
with a sequence of rules associated
"""
# packets loss and log Configuration
simul_config = {
"log": True,
}
# Configuration packets loss
if self.configuration['packet_loss_simulation']:
# Configuration with packet loss in noAck and ack-on-error
loss_rate = 15 # in %
collision_lambda = 0.1
background_frag_size = 54
loss_config = {"mode": "rate", "cycle": loss_rate}
# loss_config = {"mode":"collision", "G":collision_lambda, "background_frag_size":background_frag_size}
else:
# Configuration without packet loss in noAck and ack-on-error
loss_config = None
if loss_config is not None:
simul_config["loss"] = loss_config
# Simul and node instance
self.sim = net_sim_core.Simul(simul_config)
self.node0 = self.make_node(self.sim, self.rule_manager, self.devaddr)
self.node0.layer2.set_mtu(self.configuration['l2_mtu'])
self.node0.layer2.set_role(self.configuration['role'], self.roleSend)
print("-------------------------------- SCHC ",
self.configuration['role'], " ------------------------")
print(
"SCHC device L3={} L2={} RM={}".format(self.node0.layer3.L3addr,
self.node0.id,
self.rule_manager.Print()))
rm1 = RuleManager()
rm1.add_context(rule_context, compress_rule, frag_rule4, frag_rule3)
#ack-on-error
if ack_on_error:
rm0 = RuleManager()
rm0.add_context(rule_context, compress_rule, frag_rule1, frag_rule2)
rm1 = RuleManager()
rm1.add_context(rule_context, compress_rule, frag_rule2, frag_rule1)
#---------------------------------------------------------------------------
# Configuration of the simulation
Statsct.get_results()
sim = net_sim_core.Simul(simul_config)
devaddr = b"\xaa\xbb\xcc\xdd"
node0 = make_node(sim, rm0, devaddr) # SCHC device
node1 = make_node(sim, rm1, devaddr) # SCHC gw
sim.add_sym_link(node0, node1)
node0.layer2.set_mtu(l2_mtu)
node1.layer2.set_mtu(l2_mtu)
#---------------------------------------------------------------------------
# Information about the devices
print("-------------------------------- SCHC device------------------------")
print("SCHC device L3={} L2={} RM={}".format(node0.layer3.L3addr, node0.id,
rm0.__dict__))
print("-------------------------------- SCHC gw ---------------------------")
def frag_generic(rules_filename, packet_loss):
# --------------------------------------------------
# General configuration
l2_mtu = 72 # bits
data_size = 14 # bytes
SF = 12
simul_config = {
"log": True,
}
# ---------------------------------------------------------------------------
# Configuration packets loss
if packet_loss:
# Configuration with packet loss in noAck and ack-on-error
loss_rate = 15 # in %
collision_lambda = 0.1
background_frag_size = 54
loss_config = {"mode": "rate", "cycle": loss_rate}
# loss_config = {"mode":"collision", "G":collision_lambda, "background_frag_size":background_frag_size}
else:
# Configuration without packet loss in noAck and ack-on-error
loss_rate = None
loss_config = None
# ---------------------------------------------------------------------------
# Init packet loss
if loss_config is not None:
simul_config["loss"] = loss_config
# ---------------------------------------------------------------------------
def make_node(sim, rule_manager, devaddr=None, extra_config={}, role=None):
extra_config["unique-peer"] = True
node = net_sim_core.SimulSCHCNode(sim, extra_config, role)
node.protocol.set_rulemanager(rule_manager)
if devaddr is None:
devaddr = node.id
node.layer2.set_devaddr(devaddr)
return node
# ---------------------------------------------------------------------------
# Statistic module
Statsct.initialize()
Statsct.log("Statsct test")
Statsct.set_packet_size(data_size)
Statsct.set_SF(SF)
# ---------------------------------------------------------------------------
devaddr1 = b"\xaa\xbb\xcc\xdd"
devaddr2 = b"\xaa\xbb\xcc\xee"
dprint("---------Rules Device -----------")
rm0 = RuleManager()
# rm0.add_context(rule_context, compress_rule1, frag_rule3, frag_rule4)
rm0.Add(device=devaddr1, file=rules_filename)
rm0.Print()
dprint("---------Rules gw -----------")
rm1 = RuleManager()
# rm1.add_context(rule_context, compress_rule1, frag_rule4, frag_rule3)
rm1.Add(device=devaddr2, file=rules_filename)
rm1.Print()
# ---------------------------------------------------------------------------
# Configuration of the simulation
Statsct.get_results()
sim = net_sim_core.Simul(simul_config)
node0 = make_node(sim, rm0, devaddr1, role="device") # SCHC device
node1 = make_node(sim, rm1, devaddr2, role="core-server") # SCHC gw
sim.add_sym_link(node0, node1)
node0.layer2.set_mtu(l2_mtu)
node1.layer2.set_mtu(l2_mtu)
# ---------------------------------------------------------------------------
# Information about the devices
dprint(
"-------------------------------- SCHC device------------------------")
dprint("SCHC device L3={} L2={} RM={}".format(node0.layer3.L3addr,
node0.id, rm0.__dict__))
dprint(
"-------------------------------- SCHC gw ---------------------------")
dprint("SCHC gw L3={} L2={} RM={}".format(node1.layer3.L3addr,
node1.id, rm1.__dict__))
dprint(
"-------------------------------- Rules -----------------------------")
dprint("rules -> {}, {}".format(rm0.__dict__, rm1.__dict__))
dprint("")
# ---------------------------------------------------------------------------
# Statistic configuration
Statsct.setSourceAddress(node0.id)
Statsct.setDestinationAddress(node1.id)
# --------------------------------------------------
# Message
coap = bytearray(b"`\x12\x34\x56\x00\x1e\x11\x1e\xfe\x80\x00" +
b"\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00" +
b"\x00\x00\x01\xfe\x80\x00\x00\x00\x00\x00" +
b"\x00\x00\x00\x00\x00\x00\x00\x00\x02\x16" +
b"2\x163\x00\x1e\x00\x00A\x02\x00\x01\n\xb3" +
b"foo\x03bar\x06ABCD==Fk=eth0\xff\x84\x01" +
b"\x82 &Ehello")
# ---------------------------------------------------------------------------
# Simnulation
node0.protocol.layer3.send_later(1, None, node1.layer3.L3addr, coap)
old_stdout = sys.stdout
set_debug_output(True)
sys.stdout = io.StringIO()
sim.run()
simulation_output = sys.stdout.getvalue()
sys.stdout = old_stdout
set_debug_output(False)
print(simulation_output)
return simulation_output