103 lines
3.5 KiB
Python
103 lines
3.5 KiB
Python
from pyogp.lib.base.message.packet import Packet
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class Host(object):
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def __init__(self, ip_addr, port):
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self.ip = ip_addr
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self.port = port
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def is_ok(self):
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if self.ip == None or self.port == None or \
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self.ip == 0 or self.port == 0:
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return False
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return True
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def set_host_by_name(self, hostname):
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pass
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class Circuit(object):
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""" This is used to keep track of a given circuit. It keeps statistics
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as well as circuit information. """
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""" Some statistics things we may need: bytes/packets in, bytes/packets out,
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unacked packet count/bytes, acked packet count/bytes"""
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def __init__(self, host, pack_in_id):
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self.host = host
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self.circuit_code = 0
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self.session_id = 0
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self.is_alive = True
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self.is_trusted = False
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self.is_blocked = False
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self.allow_timeout = True
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self.last_packet_out_id = 0 #id of the packet we last sent
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self.last_packet_in_id = pack_in_id
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self.acks = [] #packets we need to ack (ids)
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self.unacked_packets = {} #packets we want acked, can be resent
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self.unack_packet_count = 0
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self.unack_packet_bytes = 0
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self.final_retry_packets = {} #packets we want acked, can't be resent
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self.final_packet_count = 0
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def next_packet_id(self):
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self.last_packet_out_id += 1
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return self.last_packet_out_id
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def ack_reliable_packet(self, packet_id):
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#go through the packets waiting to be acked, and set them as acked
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pass
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def collect_ack(self, packet_id):
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""" set a packet_id that this circuit needs to eventually ack
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(need to send ack out)"""
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self.acks.append(packet_id)
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def add_reliable_packet(self, sock, message_buffer, buffer_length, params):
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""" add a packet that we want to be acked
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(want an incoming ack) """
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packet = Packet(sock, message_buffer, buffer_length, params)
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self.unack_packet_count += 1
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self.unack_packet_bytes += buffer_length
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#if it can be resent/retried (not final) add it to the unack list
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if 'retries' in params:
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packet.retries = params['retries']
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self.unacked_packets[packet.packet_id] = packet
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#otherwise, it can't be resent to get acked
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else:
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self.final_retry_packets[packet.packet_id] = packet
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class CircuitManager(object):
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""" Manages a collection of circuits and provides some higher-level
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functionality to do so. """
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def __init__(self):
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self.circuit_map = {}
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self.unacked_circuits = {}
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def get_unacked_circuits(self):
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#go through circuits, if it has any unacked packets waiting ack, add
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#to a list
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pass
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def get_circuit(self, host):
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if (host.ip, host.port) in self.circuit_map:
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return self.circuit_map[(host.ip, host.port)]
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return None
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def add_circuit(self, host, packet_in_id):
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circuit = Circuit(host, packet_in_id)
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self.circuit_map[(host.ip, host.port)] = circuit
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return circuit
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def remove_circuit_data(self, host):
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if (host.ip, host.port) in self.circuit_map:
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del self.circuit_map[(host.ip, host.port)]
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def is_circuit_alive(self, host):
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if (host.ip, host.port) not in self.circuit_map:
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return False
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circuit = self.circuit_map[(host.ip, host.port)]
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return circuit.is_alive
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