bmcculley · June 12, 2020 04:30
diff --git a/server.c b/server.c
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
 #include <sys/types.h> 
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <netdb.h>
 #include <arpa/inet.h>
 #include <err.h>
 
 char response[] = "HTTP/1.1 200 OK\r\n"
 "Server: hello\r\n"
 "Content-Type: text/html; charset=UTF-8\r\n\r\n"
 "<!DOCTYPE html><html><head><title>hello!</title>"
 "</head>"
 "<body><h1>hello, world!</h1></body></html>\r\n"
 "<p>Just a quick example of a web server...</p>";
 
 int main()
 {
  int one = 1, client_fd;
  struct sockaddr_in svr_addr, cli_addr;
  socklen_t sin_len = sizeof(cli_addr);
 
  int sock = socket(AF_INET, SOCK_STREAM, 0);
  if (sock < 0)
    err(1, "can't open socket");
 
  setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int));
 
  int port = 8080;
  svr_addr.sin_family = AF_INET;
  svr_addr.sin_addr.s_addr = INADDR_ANY;
  svr_addr.sin_port = htons(port);
 
  if (bind(sock, (struct sockaddr *) &svr_addr, sizeof(svr_addr)) == -1) {
    close(sock);
    err(1, "Can't bind");
  }
 
  listen(sock, 5);
  while (1) {
    client_fd = accept(sock, (struct sockaddr *) &cli_addr, &sin_len);

    char *ip = inet_ntoa(cli_addr.sin_addr);
    printf("connection from: %s\n", ip);
 
    if (client_fd == -1) {
      perror("Can't accept");
      continue;
    }
 
    write(client_fd, response, sizeof(response) - 1); /*-1:'\0'*/
    close(client_fd);
  }
 }
	#include <stdio.h>
	#include <stdlib.h>
	#include <unistd.h>
	#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <netdb.h>
	#include <arpa/inet.h>
	#include <err.h>

	char response[] = "HTTP/1.1 200 OK\r\n"
	"Server: hello\r\n"
	"Content-Type: text/html; charset=UTF-8\r\n\r\n"
	"<!DOCTYPE html><html><head><title>hello!</title>"
	"</head>"
	"<body><h1>hello, world!</h1></body></html>\r\n"
	"<p>Just a quick example of a web server...</p>";

	int main()
	{
	int one = 1, client_fd;
	struct sockaddr_in svr_addr, cli_addr;
	socklen_t sin_len = sizeof(cli_addr);

	int sock = socket(AF_INET, SOCK_STREAM, 0);
	if (sock < 0)
	err(1, "can't open socket");

	setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &one, sizeof(int));

	int port = 8080;
	svr_addr.sin_family = AF_INET;
	svr_addr.sin_addr.s_addr = INADDR_ANY;
	svr_addr.sin_port = htons(port);

	if (bind(sock, (struct sockaddr *) &svr_addr, sizeof(svr_addr)) == -1) {
	close(sock);
	err(1, "Can't bind");
	}

	listen(sock, 5);
	while (1) {
	client_fd = accept(sock, (struct sockaddr *) &cli_addr, &sin_len);

	char *ip = inet_ntoa(cli_addr.sin_addr);
	printf("connection from: %s\n", ip);

	if (client_fd == -1) {
	perror("Can't accept");
	continue;
	}

	write(client_fd, response, sizeof(response) - 1); /-1:'\0'/
	close(client_fd);
	}
	}