伯克利套接字编程问题 -未找到

Question

我的标准套接字在 Ubuntu 20.04.4 上不再起作用 - 未找到 <netinet.h>。这会导致 sockaddr 的定义错误。

s.c:22:14: error: ‘struct sockaddr’ has no member named ‘sin_family’; did you mean ‘sa_family’?
   22 |   serverAddr.sin_family = AF_INET;
      |              ^~~~~~~~~~
      |              sa_family

例如

#include<stdio.h>
#include<stdlib.h>
#include<sys/types.h>
#include<sys/socket.h>
#include<netinet.h>
#include <unistd.h>

int main()
{
  int sockfd, clientfd;
  struct sockaddr serverAddr, cliAddr;
  socklen_t addr_size;
  int len = sizeof(cliAddr);
  char serverMessage[256] = "Hello from server\n";

  sockfd = socket(PF_INET, SOCK_STREAM, 0);
  
  serverAddr.sin_family = AF_INET;
  serverAddr.sin_port = htons(9002); 
  serverAddr.sin_addr.s_addr = INADDR_ANY;

  bind(sockfd, (struct sockaddr *) &serverAddr, sizeof(serverAddr));

  // listen 
  if(listen(sockfd,5)==0)
  clientfd = accept(sockfd, (struct sockaddr *) &cliAddr, &len);

  send(clientfd,serverMessage,sizeof(serverMessage),0);
  close(sockfd);
  return 0;
}

（取自https://www.prodevelopertutorial.com/linux-system-programming-creating-tcp-sockets/）

但实际上任何标准的伯克利套接字代码都可以。这似乎是一个非常灾难性的问题。

如何在 Ubuntu 20.04 上替换 netinet.h？