def run(self):
grasp.tprint("Ready to negotiate", obj1.name,
"as listener, unless pool is empty")
while True:
if len(ppool) > 0:
#attempt to listen for negotiation
err, snonce, answer = grasp.listen_negotiate(asa_nonce, obj1)
if err:
grasp.tprint("listen_negotiate error:", grasp.etext[err])
time.sleep(5) #to calm things if there's a looping error
else:
#got a new negotiation request; kick off a separate negotiator
#so that multiple requests can be handled in parallel
negotiator(snonce, answer).start()
else:
time.sleep(5) #hoping the pool will refill
###################################
# Negotiate EX3 as listener for ever
###################################
obj3.value = ["NZD", 0]
grasp.tprint("Ready to negotiate EX3 as listener")
grasp.ttprint(
"(Note: Cyrillic test case fails in a Windows console window, OK in IDLE window.)"
)
grasp.init_bubble_text("Briggs")
while True:
#start of a negotiating session
#create a random amount of resource and a random waiting time
reserves = grasp._prng.randint(100, 400)
wt = grasp._prng.randint(9000, 20000)
grasp.tprint("Reserves: $", reserves, "Wait:", wt, "ms")
#attempt to listen for negotiation
err, snonce, answer = grasp.listen_negotiate(asa_nonce, obj3)
if err:
grasp.tprint("listen_negotiate error:", grasp.etext[err])
time.sleep(5) #to calm things if there's a looping error
else:
#got a new negotiation request; kick off a separate negotiator
#so that multiple requests can be handled in parallel
negotiator(snonce, answer).start()
key_size=2048,
backend=default_backend())
public_key = private_key.public_key()
my_pem = public_key.public_bytes(
encoding=serialization.Encoding.PEM,
format=serialization.PublicFormat.SubjectPublicKeyInfo)
###################################
# Start flooding out the public key
###################################
flood_obj.value = my_pem
flooder().start()
grasp.tprint("Flooding", flood_obj.name, "for ever")
###################################
# Negotiate as listener for ever
###################################
while True:
#grasp.tprint("Encryption", grasp.crypto, "(should be False)")
# listen for negotiation request
err, snonce, request = grasp.listen_negotiate(asa_nonce, keys_obj)
if err:
grasp.tprint("listen_negotiate error:", grasp.etext[err])
time.sleep(5) #to calm things if there's a looping error
else:
#got a new negotiation request; kick off a separate negotiator
#so that multiple requests can be handled in parallel
negotiator(snonce, request).start()
obj3 = grasp.objective("EX3")
obj3.neg = True
err = grasp.register_obj(asa_handle, obj3)
if not err:
grasp.tprint("Objective EX3 registered OK")
else:
exit()
grasp.init_bubble_text(name)
###################################
# Negotiate EX3 as listener for ever
###################################
grasp.tprint("Ready to negotiate EX3 as server")
while True:
#start of a negotiating session
obj3.value = "Hello!"
#attempt to listen for negotiation
err, shandle, answer = grasp.listen_negotiate(asa_handle, obj3)
if err:
grasp.tprint("listen_negotiate error:", grasp.etext[err])
time.sleep(5) #to calm things if there's a looping error
else:
#got a new negotiation request; kick off a separate negotiator
#so that multiple requests can be handled in parallel
negotiator(shandle, answer).start()
def run(self):
global cheat_nonce
reserves = grasp._prng.randint(100, 400)
wt = grasp._prng.randint(15000, 40000)
grasp.tprint("Reserves: $", reserves, "wait:", wt)
err, asa_nonce = grasp.register_asa("Neg1") #assume it worked
obj = grasp.objective("EX2")
obj.neg = True
#obj.loop_count = 2 #for testing purposes
grasp.register_obj(asa_nonce, obj) #assume it worked
cheat_nonce = asa_nonce #pass the nonce to the other negotiator!
#attempt to listen
err, snonce, answer = grasp.listen_negotiate(asa_nonce, obj)
if err:
grasp.tprint("listen_negotiate error:", grasp.etext[err])
else:
grasp.tprint("listened, answer", answer.name, answer.value)
grasp.tprint("Source was", snonce.id_source)
result = True
reason = None
concluded = False
if answer.value[0] != "NZD":
result = False
reason = "Invalid currency"
elif answer.value[1] > reserves / 2:
answer.value = ["NZD", int(reserves / 2)]
err, temp, answer2 = grasp.negotiate_step(
asa_nonce, snonce, answer, 1000)
grasp.tprint("Step1 gave:", err, temp, answer2)
if (not err) and (not temp):
concluded = True
grasp.tprint("Negotiation succeeded", answer2.value)
elif not err:
err1 = grasp.negotiate_wait(asa_nonce, snonce, wt)
grasp.tprint("Tried wait:", grasp.etext[err1])
time.sleep(
20) #note - if wt<20000 this tests anomaly handling
grasp.tprint("Woke up")
answer2.value = ["NZD", int(0.75 * reserves)]
err2, temp, answer3 = grasp.negotiate_step(
asa_nonce, snonce, answer2, 1000)
grasp.tprint("Step2 gave:", err2, temp, answer3)
if (not err2) and (not temp):
concluded = True
grasp.tprint("Negotiation succeeded", answer3.value)
elif not err2:
result = False
if reserves % 2:
reason = "Insufficient funds"
else:
reason = u"Недостаточно средств"
else:
#other end rejected
concluded = True
grasp.tprint("Peer reject2:", answer3)
else:
#other end rejected
concluded = True
grasp.tprint("Peer reject1:", answer2)
else: #can accept the requested value
pass
if not concluded:
err = grasp.end_negotiate(asa_nonce,
snonce,
result,
reason=reason)
if err:
grasp.tprint("end_negotiate error:", grasp.etext[err])
grasp.tprint("Exit")
supported_obj.loop_count = 4
supported_obj.neg = True
err = grasp.register_obj(asa_nonce, supported_obj)
if not err:
grasp.tprint("Objective", supported_obj.name, "registered OK")
else:
exit()
###################################
# Set up pretty printing
###################################
grasp.init_bubble_text("pusher")
grasp.tprint("pusher is listening")
###################################
# Negotiate as listener for ever
###################################
while True:
# listen for negotiation request
err, snonce, request = grasp.listen_negotiate(asa_nonce, supported_obj)
if err:
grasp.tprint("listen_negotiate error:", grasp.etext[err])
time.sleep(5) #to calm things if there's a looping error
else:
#got a new negotiation request; kick off a separate negotiator
#so that multiple requests can be handled in parallel
negotiator(snonce, request).start()
