如何在服务器 C++ 上发送(序列化?）浮点向量

我正在用C ++设置Web服务器。我需要从服务器返回矢量形式的特征向量。我看到套接字不允许这样的对象直接通过，但需要序列化它。我正在尝试通过将我的矢量结果转换为 char* a 来序列化它，但是当我执行 curl 请求时，它仍然没有返回任何内容。有人会让我知道这里的诀窍吗？

/* A simple server in the internet domain using TCP
The port number is passed as an argument */
// server.cpp
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h> 
#include <sys/socket.h>
#include <netinet/in.h>
#include <vector>
#include <iostream>
void error(const char *msg)
{
    perror(msg);
    exit(1);
}
int main(int argc, char *argv[])
{
     int sockfd, newsockfd, portno;
 socklen_t clilen;
 char buffer[256];
 struct sockaddr_in serv_addr, cli_addr;
 int n;
 if (argc < 2) {
     fprintf(stderr,"ERROR, no port providedn");
     exit(1);
 }
 sockfd = socket(AF_INET, SOCK_STREAM, 0);
 if (sockfd < 0) 
    error("ERROR opening socket");
 bzero((char *) &serv_addr, sizeof(serv_addr));
 portno = atoi(argv[1]);
 serv_addr.sin_family = AF_INET;
 serv_addr.sin_addr.s_addr = INADDR_ANY;
 serv_addr.sin_port = htons(portno);
 if (bind(sockfd, (struct sockaddr *) &serv_addr,
          sizeof(serv_addr)) < 0) 
          error("ERROR on binding");
 listen(sockfd,5);
 while (1 == 1) {
     clilen = sizeof(cli_addr);
     newsockfd = accept(sockfd, 
                 (struct sockaddr *) &cli_addr, 
                 &clilen);
     if (newsockfd < 0) 
          error("ERROR on accept");
     bzero(buffer,256);
     n = read(newsockfd,buffer,255);
     if (n < 0) error("ERROR reading from socket");
     printf("before result: %sn",buffer);
     std::vector<float> fv;
     fv.push_back(7);
     fv.push_back(8); 
     char* result = reinterpret_cast<char*>(&fv);
     send(newsockfd, result, sizeof(result), 0);
     //n = write(newsockfd,"I got your message",18);
     //if (n < 0) error("ERROR writing to socket");
     printf("message sent. n");
     close(newsockfd);
     //close(sockfd);
 }
 return 0; 
}

编译代码：

g++ -o server server.cpp

并运行：

 ./server 8080

对于卷曲请求：

curl http://localhost:8080

我得到：

alliey:socket alliey$ curl http://localhost:8080
`N�.

我应该如何解释响应？