class Receiver(Link):
def __init__(self, connection, name, source):
Link.__init__(self, connection)
self.proto = ProtoReceiver(name, source, None)
@synchronized
def flow(self, limit, drain=False):
self.proto.flow(limit, drain)
@synchronized
def pending(self, block=False, timeout=None):
if block:
self.wait(self._pending_unblocked, timeout)
return self.proto.pending()
def _pending_unblocked(self):
return self.credit() == 0 or self.proto.pending() > 0
@synchronized
def draining(self, block=False, timeout=None):
if block:
self.wait(self._draining_unblocked, timeout)
return self.proto.draining()
def _draining_unblocked(self):
return self.proto.draining()
@synchronized
def get(self):
return decode(self.proto.get())
def session():
from connection import Connection
from session import Session
from link import link, Sender, Receiver
from protocol import Fragment, Linkage
a = Connection(lambda n: Session(n, link))
a.tracing = set(["ops", "err"])
a.id = "A"
b = Connection(lambda n: Session(n, link))
b.tracing = set(["err"])
b.id = "B"
ssn = Session("test", link)
a.add(ssn)
ssn.begin()
# nss = Session("test", link)
# b.add(nss)
def pump():
a.tick()
b.tick()
b.write(a.read())
a.write(b.read())
pump()
nss = [s for s in b.incoming.values() if s.name == "test"][0]
nss.begin()
snd = Sender("L", "S", "T")
ssn.add(snd)
rcv = Receiver("L", "S", "T")
nss.add(rcv)
snd.attach()
rcv.attach()
rcv.flow(10)
pump()
snd.send(fragments=Fragment(True, True, 0, 0, "m1"))
snd.send(fragments=Fragment(True, True, 0, 0, "m2"))
dt3 = snd.send(fragments=Fragment(True, True, 0, 0, "m3"))
pump()
print "PENDING", rcv.pending()
pump()
snd.send(fragments=Fragment(True, True, 0, 0, "m4"))
pump()
xfrs = []
while rcv.pending():
x = rcv.get()
xfrs.append(x)
print "XFR", x
rcv.disposition(xfrs[-1].delivery_tag, "ACCEPTED")
pump()
snd.send(fragments=Fragment(True, True, 0, 0, "m5"))
pump()
rcv.disposition(xfrs[0].delivery_tag, "ACCEPTED")
print "----------"
pump()
print "----------"
print "ssn.outgoing:", ssn.outgoing
print "snd.unsettled:", snd.unsettled
for xfr in xfrs[1:-1]:
rcv.disposition(xfr.delivery_tag, "ACCEPTED")
print "rcv.unsettled", rcv.unsettled
print "rcv.pending()", rcv.pending()
rcv.disposition(rcv.get().delivery_tag)
pump()
print "----------"
print "ssn.outgoing:", ssn.outgoing
print "snd.unsettled:", snd.unsettled
print "settling:", dt3
snd.settle(dt3)
print "ssn.outgoing:", ssn.outgoing
print "snd.unsettled:", snd.unsettled
for dt in list(snd.unsettled):
snd.settle(dt)
snd.detach()
rcv.detach()
pump()
print "ssn.outgoing:", ssn.outgoing
print "snd.unsettled:", snd.unsettled
def __init__(self, connection, name, source): Link.__init__(self, connection) self.proto = ProtoReceiver(name, source, None)