def payload_is_accepted(self, packet): seq_lo, seq_hi = packet.get_seq_interval() first_byte, last_byte = seq_lo, seq_hi - 1 first_ok = SequenceNumber.a_leq_b_leq_c(self.rcv_nxt, first_byte, self.rcv_nxt + self.rcv_wnd) last_ok = SequenceNumber.a_leq_b_leq_c(self.rcv_nxt, last_byte, self.rcv_nxt + self.rcv_wnd) return last_byte >= first_byte and (first_ok or last_ok)
def payload_is_accepted(self, packet): seq_lo, seq_hi = packet.get_seq_interval() first_byte, last_byte = seq_lo, seq_hi-1 first_ok = SequenceNumber.a_leq_b_leq_c(self.rcv_nxt, first_byte, self.rcv_nxt+self.rcv_wnd) last_ok = SequenceNumber.a_leq_b_leq_c(self.rcv_nxt, last_byte, self.rcv_nxt+self.rcv_wnd) return last_byte >= first_byte and (first_ok or last_ok)
def usable_window_size(self): upper_limit = self.snd_una + self.snd_wnd # If the upper window limit is below SND_NXT, we must return 0. if SequenceNumber.a_leq_b_leq_c(self.snd_una, self.snd_nxt, upper_limit): return upper_limit - self.snd_nxt else: # TODO: add test! return 0
def usable_window_size(self): upper_limit = self.snd_una + self.snd_wnd # Si el límite superior de la ventana está por debajo de SND_NXT, # tenemos que devolver 0. if SequenceNumber.a_leq_b_leq_c(self.snd_una, self.snd_nxt, upper_limit): return upper_limit - self.snd_nxt else: # TODO: agregar test! return 0
def should_update_window(self, ack_number): # TODO: agregar tests para esto. # RFC 1122, p.94 (corrección al RFC 793). return SequenceNumber.a_leq_b_leq_c(self.snd_una, ack_number, self.snd_nxt)
def ack_covers_tracked_packet(self, ack_number): iss = self.protocol.iss seq_number = self.tracked_packet.get_seq_number() return SequenceNumber.a_leq_b_leq_c(iss, seq_number, ack_number)
def should_update_window(self, ack_number): # TODO: agregar tests para esto. # RFC 1122, p.94 (corrección al RFC 793). return SequenceNumber.a_leq_b_leq_c(self.snd_una, ack_number, self.snd_nxt)
def should_update_window(self, ack_number): # TODO: add tests for this. # RFC 1122, p.94 (correction to RFC 793). return SequenceNumber.a_leq_b_leq_c(self.snd_una, ack_number, self.snd_nxt)
def ack_covers_tracked_packet(self, ack_number): iss = self.protocol.iss seq_number = self.tracked_packet.get_seq_number() return SequenceNumber.a_leq_b_leq_c(iss, seq_number, ack_number)