我正在尝试编写一个获取 HTML 的 TCP 客户端。该程序将接受用户的网站并打印出内容。现在我的代码只取回一个 HTML 说错误 408 请求超时错误页面。问题出在哪里？
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <errno.h>
#include <arpa/inet.h>
int main(int argc, char* argv[])
{
char *domain = argv[1];
char *path = strchr(domain, '/');
*path++ = '\0';
//printf("host: %s; path: %s\n", domain, path);
int sock, bytes_recieved;
char send_data[1024],recv_data[9999];
struct sockaddr_in server_addr;
struct hostent *he;
he = gethostbyname(domain);
if (he == NULL){
herror("gethostbyname");
exit(1);
}
if ((sock = socket(AF_INET, SOCK_STREAM, 0))== -1){
perror("Socket");
exit(1);
}
server_addr.sin_family = AF_INET;
server_addr.sin_port = htons(80);
server_addr.sin_addr = *((struct in_addr *)he->h_addr);
bzero(&(server_addr.sin_zero),8);
if (connect(sock, (struct sockaddr *)&server_addr,sizeof(struct sockaddr)) == -1){
perror("Connect");
exit(1);
}
snprintf(send_data, sizeof(send_data), "GET /%s HTTP/1.1\r\n Host: %s\r\n \r\n \r\n", path, domain);
//printf("%s\n", send_data);
send(sock, send_data, strlen(send_data), 0);
printf("Data sended.\n");
bytes_recieved = recv(sock, recv_data, 9999, 0);
recv_data[bytes_recieved] = '\0';
close(sock);
printf("Data reveieved.\n");
printf("%s\n", recv_data);
return 0;
}
例如，现在如果我正在尝试运行 ./client www.facebook.com 它会返回一个 HTML 页面说发生错误