【Linux网络的POSIX API】持续更新中

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <arpa/inet.h>
posix_server.c
// posix
int main(int argc, char *argv[]) {
  int listenfd = socket(AF_INET, SOCK_STREAM, 0);
  if (listenfd == -1) {
    return -1;
  }
  struct sockaddr_in servaddr, clientaddr;
  memset(&servaddr, 0, sizeof(struct sockaddr));
  servaddr.sin_family = AF_INET;
  servaddr.sin_addr.s_addr = htonl(INADDR_ANY);
  servaddr.sin_port = htons(8888);
  bind(listenfd, (struct sockaddr*)&servaddr, sizeof(servaddr));
  listen(listenfd, 10);
  socklen_t len = sizeof(clientaddr);
  int connfd = accept(listenfd, (struct sockaddr*)&clientaddr, &len);
  char buffer[1024] = {0};
  int rv = recv(connfd, buffer, 1024, 0);
  printf("Received from client length: %d , %s\n", rv, buffer);
  rv = send(connfd, buffer, rv, 0);
  close(connfd);
  close(listenfd);
  return 0;
}