Commit 14415b99 authored by Ashkan's avatar Ashkan
Browse files

Add skeleton of Application and Channel parameter classes. 

Add TODO in PrrtCodingParameters
parent 49eb751a

prrt/prrt.pyx

+76 −14
Original line number Diff line number Diff line
@@ -106,6 +106,47 @@ cdef sockaddr_to_addr_and_port(sockaddr_in addr): 
class PayloadTooBigException(Exception):

    pass



class PrrtChannelParameters:

    def __init__(self,

                 loss_rate_fwd,

                 loss_rate_bwd,

                 rtt_prop_fwd,

                 rtt_prop_bwd,

                 data_rate_btl_fwd,

                 data_rate_btl_bwd):

        self.loss_rate_fwd = loss_rate_fwd

        self.loss_rate_bwd = loss_rate_bwd

        self.rtt_prop_fwd = rtt_prop_fwd

        self.rtt_prop_bwd = rtt_prop_bwd

        self.data_rate_btl_fwd = data_rate_btl_fwd

        self.data_rate_btl_bwd = data_rate_btl_bwd



    def get_bandwidth_delay_fwd(self):

        return self.data_rate_btl_fwd * self.rtt_prop_fwd



    def get_bandwidth_delay_bwd(self):

        return self.data_rate_btl_bwd * self.rtt_prop_bwd



    # TODO

    def get_ri_opt(self, applicationParameters):

        return 0



class ApplicationParameters:

    # maxLatency float in seconds

    # maxResidualLossRate in percent



    def __init__(self, maxLatency, maxResidualLossRate):

        self.maxLatency = maxLatency

        self.maxResidualLossRate = maxResidualLossRate



    def __repr__(self):

        return "ApplicationParameters(maxLatency={},maxResidualLossRate={})".format(self.maxLatency,

                                                                                    self.maxResidualLossRate)



    def __str__(self):

        return "({},{},{})".format(self.maxLatency, self.maxLatency)





class PrrtCodingConfiguration:

    def __init__(self, n, k, n_cycle=None):

        if n < k:
@@ -128,6 +169,18 @@ class PrrtCodingConfiguration: 
    def __str__(self):

        return "({},{},{})".format(self.n, self.k, self.n_cycle)



    # TODO

    # def __eq__()



    # TODO

    # Calculate the redundancy information this coding configuration causes, given a certain channel.

    # ri = PrrtChannelParameters.get_ri_opt(applicationParameters)



    # TODO

    # Check if it is able to fulfill application parameters given channel parameters.

    # def is_valid_for(applicationParameters, channelParameters)





cdef class PrrtSocket:

    cdef cprrt.PrrtSocket* _c_socket

    _epoch = datetime.datetime.utcfromtimestamp(0)
@@ -141,21 +194,30 @@ cdef class PrrtSocket: 
        cprrt.PrrtSocket_bind(self._c_socket, host.encode("utf8"), port)



    # Channel Properties

    property data_rate_btl_fwd:

        def __get__(self):

            return cprrt.PrrtSocket_get_btlbw_fwd(self._c_socket)



    property data_rate_btl_back:

        def __get__(self):

            return cprrt.PrrtSocket_get_btlbw_back(self._c_socket)



    property rtt_prop_fwd:

        def __get__(self):

            return cprrt.PrrtSocket_get_rtprop_fwd(self._c_socket) * 0.000001



    property loss_rate_fwd:

    property prrtChannelParameters:

        def __get__(self):

            return cprrt.PrrtSocket_get_plr_fwd(self._c_socket)

            return PrrtChannelParameters(cprrt.PrrtSocket_get_plr_fwd(self._c_socket),

                                         0, # TODO: Implement PrrtSocket_get_plr_bwd

                                         cprrt.PrrtSocket_get_rtprop_fwd(self._c_socket) * 0.000001,

                                         0, # TODO: Implement PrrtSocket_get_rtprop_bwd

                                         cprrt.PrrtSocket_get_btlbw_fwd(self._c_socket),

                                         cprrt.PrrtSocket_get_btlbw_back(self._c_socket))



    # property data_rate_btl_fwd:

    #     def __get__(self):

    #         return cprrt.PrrtSocket_get_btlbw_fwd(self._c_socket)

    #

    # property data_rate_btl_back:

    #     def __get__(self):

    #         return cprrt.PrrtSocket_get_btlbw_back(self._c_socket)

    #

    # property rtt_prop_fwd:

    #     def __get__(self):

    #         return cprrt.PrrtSocket_get_rtprop_fwd(self._c_socket) * 0.000001

    #

    # property loss_rate_fwd:

    #     def __get__(self):

    #         return cprrt.PrrtSocket_get_plr_fwd(self._c_socket)



    # Application Properties

    property target_delay: