class MMPProtocol(asynchat.async_chat):
"""modular message protocol
see http://www.psyc.eu/mmp.html for details."""
def __init__(self, callback, connection):
asynchat.async_chat.__init__(self, connection)
self.set_terminator("\n")
self.buffer = ""
self.mmp = MMPState()
self.state = "mmp"
self.data = []
self.callback = callback
def handle_connect(self):
# dead code neuerdings, eh?
print "connected... but this is dead code"
def handle_close(self):
s = MMPState()
if self.addr[1] != 4404:
s._set("_source", "psyc://%s:%d/" % self.addr)
else:
s._set("_source", "psyc://%s/" % self.addr[0])
self.packetReceived(
s,
"_notice_circuit_broken\nYour TCP connection to [_source] was broken by the bull from the china shop\n.\n",
)
self.close()
def collect_incoming_data(self, data):
self.buffer += data
def found_terminator(self):
# hierfuer siehe asyncchat.py... das setzt
# terminator auf 0 zurueck wenns nen int als terminator
# hat und den findet (line 111)
if self.get_terminator() == 0:
self.set_terminator("\n")
line = self.buffer
self.buffer = ""
self.lineReceived(line)
def lineReceived(self, line):
# kind of state machine
line = line.strip()
if line == ".":
## print "<<EOP>>"
self.packetReceived(self.mmp, self.data)
# reset state, clear temporary variables, etc
self.mmp.reset_state()
self.data = []
self.state = "mmp"
return
if (line == "" or not _isModifier(line)) and self.state == "mmp":
# if we have _length for data then
# binary support
if self.mmp._query("_length"):
self.set_terminator(self.mmp._query("_length"))
self.state = "data"
## print "<<" + self.state + ">> " + line ## comment out
if self.state == "mmp":
# maybe else with the above could also work...
self.mmp.set_state(line)
return
elif line != "":
self.data += [line]
def packetReceived(self, mmp, data):
## print "MMPProtocol::packetReceived"
## print "=>MMP :", mmp.get_state()
## print "=>data:", data
self.callback.packetReceived(mmp, data)
def sendPacket(self, mmp, data):
## print "calling MMPProtocol::sendPacket()"
packet = mmp.plain()
packet += "\n" + data + "\n.\n"
if debug:
print ">>send>>\n", packet, "<<send<<\n"
self.push(packet)
