monitorfile.c

Linux 平台下

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

#define BUFMAX 100

int main()
{
    int server_sockfd, client_sockfd;
	struct sockaddr_in server_addr, client_addr;
	int client_len;
	char buf[BUFMAX];
	int buflen;

	bzero((char *)&server_addr, sizeof(server_addr));
	server_addr.sin_family = AF_INET;
	server_addr.sin_addr.s_addr = htonl(INADDR_ANY);
	server_addr.sin_port = htons(8000);

	if ((server_sockfd = socket(AF_INET, SOCK_STREAM, 0)) < 0) {
		perror("create server socket error");
	}

	if (bind(server_sockfd, (struct sockaddr *)&server_addr, sizeof(server_addr)) < 0) {
		perror("bind server socket error");
	}

	if (listen(server_sockfd, 5) < 0) {
		perror("listen server socket error");
	}
	
	printf("Welcome, world!\n");

	for (;;) {
		client_len = sizeof(client_addr);
		
		printf("Waiting for file...\n");
		
		client_sockfd = accept(server_sockfd, (struct sockaddr *)&client_addr, &client_len);

        for (;;) {
            memset(buf, '\0', sizeof(buf));
            read(client_sockfd, buf, BUFMAX);
            printf("%s", buf);
            

            if (0 == strcmp(buf, "bye")) {
                break;
            }
        }

		close(client_sockfd);
	}
    
    return 0;
}