如何使用C编程实现多播套接字连接

Question

数据包丢失存在问题。我正在进行套接字连接以获取udp数据包，但我认为我的多播套接字连接可能存在问题。请帮帮我 - 我的代码是否合适？

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
#include <sys/socket.h>

int main(int argc, char *argv[])
{
    struct sockaddr_in si_me, si_other;
    struct ip_mreq mreq;
    socklen_t slen = sizeof(si_other);
    int s = -1;
    if ((s = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP)) == -1) {
        printf("Error creating socket\n");
    }

    int yes = 1;
    if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, &yes, sizeof(int)) == -1) {
       printf("setsockopt");exit(1);
    }
    int val = 1;
    if (setsockopt(s, SOL_SOCKET, SO_REUSEPORT, (const char *) &val,
        sizeof(val)) < 0) {
    }

    memset((char *) &si_me, 0, sizeof(si_me));
    si_me.sin_family = AF_INET;
    si_me.sin_port = htons(42000);
    si_me.sin_addr.s_addr = htonl(INADDR_ANY);

    //bind socket to port
    if (bind(s, (struct sockaddr*) &si_me, sizeof(si_me)) == -1) {
       printf("Error binding to port\n");
    }

    //multicast socket
    mreq.imr_multiaddr.s_addr = inet_addr("232.0.1.1");
    mreq.imr_interface.s_addr = htonl(INADDR_ANY);
    if (setsockopt(s, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) {
    printf("setsockopt mreq");
    exit(1);
    }
    int recv_len;
    while(true) {
        if ((recv_len = (int) recvfrom(s, data, BUFLEN, 0,(struct sockaddr *) &si_other, &slen)) == -1) {
         printf("Error receiving pakcets\n");
         }
    }
}