实验四 Web服务器2
## 信息安全系统设计与实现
20191318王泽文
Web服务器的客户端服务器
代码：
#include<stdio.h>
#include<stdlib.h>
#include<errno.h>
#include<string.h>
#include<sys/types.h>
#include<netinet/in.h>
#include<sys/socket.h>
#include<sys/wait.h>
int port;
#define BACKLOG 5
extern int close(int fd);
//http协议text/html类型头
char *resp_header = "HTTP/1.1 200 OK\r\n"
"Content-Type: text/html;charset=UTF-8\r\n"
"Server: Wavin Web Server/1.1\r\n";
//头长度
int resp_header_len;
//模拟html文件
char *html_body = "<!DOCTYPE html>"
"<html><head>"
"<title>Welcome to 20191318wzw Web Server (WWS)</title>"
"</head><body>Hello by 20191318wzw</body></html>";
int get_socketfd()
{
int server_fd;
struct sockaddr_in my_addr;
resp_header_len = strlen(resp_header);
server_fd=socket(AF_INET,SOCK_STREAM,0);
if(server_fd==-1){
printf("socket failed:%d\n",errno);
return -1;
}
my_addr.sin_family=AF_INET;
my_addr.sin_port=htons(port);
my_addr.sin_addr.s_addr=htonl(INADDR_ANY);
bzero(&(my_addr.sin_zero),8);
if(bind(server_fd,(struct sockaddr*)&my_addr,sizeof(struct sockaddr))<0){
printf("bind error\n");
return -1;
}
listen(server_fd,BACKLOG);
return server_fd;
}
void parse_request(int server_fd)
{
int client;
int len;
char url[256];
char buffer[1024];
struct sockaddr_in client_addr;
socklen_t length = sizeof(client_addr);
printf("Start Socket Listening at port:%d...\n",port);
while(1){
client=accept(server_fd,(struct sockaddr*)&client_addr,&length);
if(client < 0){
printf("open client socket error\n");
continue;
}
memset(buffer,0,sizeof(buffer));
//接受客户端请求
len = recv(client,buffer,sizeof(buffer),0);
buffer[1024] = '\0';
printf("receive data len : %d \n\nbuffer:\n %s\n",len,buffer);
memset(buffer,0,sizeof(buffer));
sprintf(buffer,"%s\n%s",resp_header,html_body);
printf("send data is:\n%s\n",buffer);
//发送响应到客户端
if(send(client,buffer,resp_header_len+strlen(html_body),0) <= 0){
printf("response failed !\n");
close(client);
return;
}
}
}
int str2int(char *str)
{
int result = 0;
int len,i,j;
len = strlen(str);
for ( i=0; i<len; i++){
if(str[i] >= '0' && str[i] <= '9'){
int tmp = 1;
printf("%d\n",str[i] - '0');
for ( j=0; j<len-i-1; j++){
tmp = tmp * 10;
}
result += (str[i] - '0') * tmp;
printf("tmp:%d result:%d\n",tmp,result);
}
}
return result;
}
int main(int argc, char **argv)
{
int server;
char *args = argv[1];
port = (args == NULL)?8080:str2int(args);
server = get_socketfd();
parse_request(server);
close(server);
return 0;
}
运行
服务端：
客户端
码云链接：https://gitee.com/Yushino/system-job/tree/master/socket