[C++] C# 측으로 Struct 를 UDP 로 전송

 

 

#include <WS2tcpip.h>
#include <iostream>

using namespace std;

#pragma comment(lib, "ws2_32.lib")

#define RECEIVER_IP      "127.0.0.1"
#define PORT             7788
#define PACKET_LENGTH    48


// don't have Marshalling, this struct not include array pointer.
struct SendInfo
{
public:
    int One;
    int Two;
    double Three;
    double Four;
    double Five;
    double Heading;
    int MissionStatus;
};

int main()
{

    SendInfo sendinfo;
    
    sendinfo.One = 10;
    sendinfo.Two = 20;
    sendinfo.Three = 30.33;
    sendinfo.Four = 40.44;
    sendinfo.Five = 50.55;
    sendinfo.Six = 60.66;
    sendinfo.Seven = 66;

    WSADATA wsaData;
    WSAStartup(MAKEWORD(2, 2), &wsaData);

    SOCKET sock = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);
    SOCKADDR_IN addr;
    ZeroMemory(&addr, sizeof(addr));
    addr.sin_family = AF_INET;
    addr.sin_port = htons(PORT);
    inet_pton(AF_INET, RECEIVER_IP, &(addr.sin_addr.s_addr));

    char buf[48];
    memset(&buf, '\0', 48);

    *(int*)(buf + 0) = sendinfo.One;
    *(int*)(buf + 4) = sendinfo.Two;
    *(double*)(buf + 8) = sendinfo.Three;
    *(double*)(buf + 16) = sendinfo.Four;
    *(double*)(buf + 24) = sendinfo.Five;
    *(double*)(buf + 32) = sendinfo.Six;
    *(int*)(buf + 40) = sendinfo.Seven;

    sendto(sock, (char*)&sendinfo, sizeof(SendInfo), 0, (SOCKADDR*)&addr, sizeof(addr));

    closesocket(sock);

    WSACleanup();
}

 

2022-06-12 수정.

가장 기본적인 예제이므로 필요하다면 내 Git 저장소 내의 cyp::communication::udp 클래스를 확인하면 좋을듯 하다.