omnet 通过双向通道进行节点位置信息的交换 代码
时间: 2024-03-17 16:43:30 浏览: 189
以下是使用双向通道进行节点位置信息交换的简单示例代码:
在 `omnetpp.ini` 中添加以下内容:
```
[General]
sim-time-limit = 100s
**.numNodes = 2
**.node[*].xCoor = uniform(0, 100)
**.node[*].yCoor = uniform(0, 100)
**.node[*].udpApp[0].typename = "UDPBasicApp"
**.node[*].udpApp[0].destAddresses = "node[1]"
**.node[*].udpApp[0].destPort = 5000
**.node[*].udpApp[0].messageLength = 100
**.node[*].udpApp[1].typename = "UDPBasicApp"
**.node[*].udpApp[1].localPort = 5000
**.node[*].udpApp[1].messageLength = 100
```
这里定义了两个节点,并为每个节点设置了 x 和 y 坐标。每个节点都有一个 `UDPBasicApp` 应用程序,一个用于发送位置信息,另一个用于接收位置信息。
在 `UDPBasicApp` 中添加以下内容:
```
#include "inet/applications/base/ApplicationPacket_m.h"
#include "inet/common/geometry/common/Coord.h"
#include "inet/common/packet/Packet.h"
#include "inet/networklayer/common/L3AddressResolver.h"
#include "inet/transportlayer/contract/udp/UDPControlInfo.h"
using namespace inet;
class UDPBasicApp : public cSimpleModule
{
private:
simtime_t startTime;
simtime_t stopTime;
cMessage *event;
int localPort;
int destPort;
const char *destAddresses;
int messageLength;
UDPSocket socket;
public:
UDPBasicApp();
virtual ~UDPBasicApp();
protected:
virtual void initialize() override;
virtual void handleMessage(cMessage *msg) override;
};
Define_Module(UDPBasicApp);
UDPBasicApp::UDPBasicApp()
{
event = nullptr;
}
UDPBasicApp::~UDPBasicApp()
{
cancelAndDelete(event);
}
void UDPBasicApp::initialize()
{
startTime = par("startTime");
stopTime = par("stopTime");
localPort = par("localPort");
destPort = par("destPort");
destAddresses = par("destAddresses");
messageLength = par("messageLength");
if (strcmp(destAddresses, ""))
socket.setOutputGate(gate("udpOut"));
else
socket.bind(localPort);
event = new cMessage("event");
scheduleAt(startTime, event);
}
void UDPBasicApp::handleMessage(cMessage *msg)
{
if (msg == event) {
if (strcmp(destAddresses, "")) {
const auto& addr = L3AddressResolver().resolve(destAddresses);
if (addr.isUnspecified()) {
EV_ERROR << "cannot resolve destination address: " << destAddresses << endl;
return;
}
socket.connect(addr, destPort);
}
auto packet = new Packet("data");
auto payload = makeShared<ApplicationPacket>();
auto coord = Coord(par("xCoor"), par("yCoor"), 0);
payload->setCoord(coord);
packet->insertAtBack(payload);
socket.send(packet);
scheduleAt(simTime() + 1, event);
}
else if (msg->getKind() == UDP_I_DATA) {
auto packet = check_and_cast<Packet *>(msg);
auto payload = packet->popAtFront<ApplicationPacket>();
auto coord = payload->getCoord();
EV_INFO << "Received position information from " << packet->getTag<UDPControlInfo>()->getSrcAddr() << ": (" << coord.x << ", " << coord.y << ")" << endl;
delete msg;
}
else
throw cRuntimeError("Unknown message kind");
}
```
这里定义了一个名为 `UDPBasicApp` 的应用程序,它具有发送和接收位置信息的功能。在 `initialize()` 中,我们将应用程序绑定到本地端口或连接到目标地址和端口。在 `handleMessage()` 中,我们使用 `Coord` 类创建一个包含节点位置信息的 payload,并将其封装在一个 `Packet` 中发送到目标节点。当接收到包含位置信息的 `Packet` 时,我们将其提取出来,并将其打印到控制台上。
请注意,该代码只是一个示例,实际使用中可能需要添加更多的错误处理和其他功能。
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