如何在UDPBAsicApp消息中获得基于INET的WirelessHost速度？

#include <inet/applications/udpapp/UDPBAsicApp.h>
#include <inet/networklayer/common/L3AddressResolver.h>
#include <inet/networklayer/ipv4/IPv4InterfaceData.h>
#include <inet/networklayer/ipv4/IPv4InterfaceTable.h>
#include <inet/networklayer/ipv4/IPv4Route.h>
#include <inet/networklayer/ipv4/IPv4RoutingTable.h>
#include <inet/networklayer/ipv4/IPv4RoutingTableAccess.h>
#include <inet/networklayer/ipv4/IPv4RoutingTableEntry.h>
#include <inet/networklayer/ipv4/IPv4RoutingTableEntryAccess.h>
#include <inet/networklayer/ipv4/IPv4RoutingTableEntryCollec

void UDPBAsicApp::handleMessage(cMessage *msg)
{
    if (msg->isSelfMessage()) {
        // 自己的消息处理逻辑
    }
    else {
        // 接收到的消息处理逻辑
        cPacket *packet = check_and_cast<cPacket *>(msg);
        
        // 获取发送方的地址
        L3Address srcAddr = packet->getTag<L3AddressInd>()->getSrcAddress();
        
        // 获取发送方的WirelessHost
        WirelessHost *srcHost = getWirelessHost(srcAddr);
        
        // 获取WirelessHost的速度
        double speed = srcHost->getSpeed();
        
        // 在这里可以使用获取到的速度进行后续处理
        
        delete msg;
    }
}