c++ - C Socket 和 Omnet++ 之间的方法名称冲突

Question

我想在使用 Omnet++ 完成的网络模拟中使用套接字，我遇到方法名称冲突:

• Socket 的 send() 方法。
• 由 Omnet++ 定义的 send() 方法，允许在模拟模块之间交换消息。

编译器只识别 Omnet++ 定义的 send() 方法。

我该如何解决？

谢谢，

编辑

为了更清楚，我将通过我的代码的拷贝:

GeoTraCIMobility.cc(CPP代码)

#include <limits>
#include <iostream>
#include <sstream>
//#include <cstring>      // Needed for memset
//#include <sys/socket.h> // Needed for the socket functions
//#include <netdb.h>      // Needed for the socket functions
#include <sys/socket.h>
#include <arpa/inet.h>
#include <unistd.h>

#include "mobility/geoTraCI/GeoTraCIMobility.h"

Define_Module(GeoTraCIMobility);

namespace {
    const double MY_INFINITY = (std::numeric_limits<double>::has_infinity ? std::numeric_limits<double>::infinity() : std::numeric_limits<double>::max());

    double roadIdAsDouble(std::string road_id) {
        std::istringstream iss(road_id);
        double d;
        if (!(iss >> d)) return MY_INFINITY;
        return d;
    }
}

void GeoTraCIMobility::Statistics::initialize()
{
    firstRoadNumber = MY_INFINITY;
    startTime = simTime();
    totalTime = 0;
    stopTime = 0;
    minSpeed = MY_INFINITY;
    maxSpeed = -MY_INFINITY;
    totalDistance = 0;
    totalCO2Emission = 0;
}

//OTHERS FUNCTIONS

// Function that create a socket and send data
void GeoTraCIMobility::requestingFromPyServer()
{
    std::string HOST = "127.0.0.1";
    int PORT = 19999;
    int MAX_BUFFER = 1024;

      int connectionFd, rc, index = 0, limit = MAX_BUFFER;
      struct sockaddr_in servAddr, localAddr;
      char buffer[MAX_BUFFER+1];


      memset(&servAddr, 0, sizeof(servAddr));
      servAddr.sin_family = AF_INET;
      servAddr.sin_port = htons(PORT);
      servAddr.sin_addr.s_addr = inet_addr(HOST.c_str());

      // Create socket
      connectionFd = socket(AF_INET, SOCK_STREAM, 0);

      /* bind any port number */
      localAddr.sin_family = AF_INET;
      localAddr.sin_addr.s_addr = htonl(INADDR_ANY);
      localAddr.sin_port = htons(0);

      rc = bind(connectionFd,
          (struct sockaddr *) &localAddr, sizeof(localAddr));

      // Connect to Server
      connect(connectionFd,
          (struct sockaddr *)&servAddr, sizeof(servAddr));

      // Send request to Server
      std::string req= "ShortestPath_297162704_82660198";
      sprintf( buffer, "%s", req.c_str() );

      // UNRECOGNIZED SEND METHOD 
      send(connectionFd, buffer, strlen(buffer), 0 );
      // UNRECOGNIZED SEND METHOD

      close(connectionFd);

      printf("Client closed.\n");
}

GeoTraCIMobility.cc 继承自 cSimpleModule 的发送方法如下:

cSimpleModule.h

/**
 * Sends a message through the gate given with its ID.
 */
int send(cMessage *msg, int gateid)  {return sendDelayed(msg, SIMTIME_ZERO, gateid);}

/**
 * Sends a message through the gate given with its name and index
 * (if multiple gate).
 */
int send(cMessage *msg, const char *gatename, int gateindex=-1)  {return sendDelayed(msg, SIMTIME_ZERO, gatename, gateindex);}

/**
 * Sends a message through the gate given with its pointer.
 */
int send(cMessage *msg, cGate *outputgate)  {return sendDelayed(msg, SIMTIME_ZERO, outputgate);}

Answer 1

使用 ::send(...) 访问 OMNeT++ 模型中的全局函数。否则，将调用继承自 cSimpleModule 的 send() 方法。