simple_web_server.c

// http://tinyhack.com/2014/03/12/implementing-a-web-server-in-a-single-printf-call/
// http://blog.jobbole.com/64252/

#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<unistd.h>
#include<sys/types.h>
#include<sys/stat.h>
#include<sys/socket.h>
#include<arpa/inet.h>
#include<netdb.h>
#include<signal.h>
#include<fcntl.h>

int main(int argc, char *argv[])
{
  int sockfd = socket(AF_INET, SOCK_STREAM, 0);
  struct sockaddr_in serv_addr;
  bzero((char *)&serv_addr, sizeof(serv_addr));      
  serv_addr.sin_family = AF_INET;
  serv_addr.sin_addr.s_addr = INADDR_ANY;
  serv_addr.sin_port = htons(8080);
  bind(sockfd, (struct sockaddr *)&serv_addr, sizeof(serv_addr));
  listen(sockfd, 5);
  while (1) {
    int cfd  = accept(sockfd, 0, 0);
    char *s = "HTTP/1.0 200\r\nContent-type:text/html\r\n\r\n<h1>Hello world!</h1>"; 
    if (fork()==0) {
      write(cfd, s, strlen(s));
      shutdown(cfd, SHUT_RDWR);
      close(cfd);
    }   
  }
  return 0;
}