pdf详情版
01 学习目标
- 编写函数解析http请求
○ GET /hello.html HTTP/1.1\r\n
○ 将上述字符串分为三部分解析出来 - 编写函数根据文件后缀，返回对应的文件类型
- sscanf - 读取格式化的字符串中的数据
○ 使用正则表达式拆分
○ [^ ]的用法 - 通过浏览器请求目录数据
○ 读指定目录内容
opendir
readdir
closedir
○ scandir - 扫描dir目录下(不包括子目录)内容 - http中数据特殊字符编码解码问题
○ 编码
○ 解码
02 epoll 服务器epoll模型代码
epoll_server.c:
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <sys/epoll.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/stat.h>
#include <ctype.h>
#include "epoll_server.h"#define MAXSIZE 2000void epoll_run(int port)
{// 创建一个epoll树的根节点int epfd = epoll_create(MAXSIZE);if(epfd == -1){perror("epoll_create error");exit(1);}// 添加要监听的节点// 先添加监听lfdint lfd = init_listen_fd(port, epfd);// 委托内核检测添加到树上的节点struct epoll_event all[MAXSIZE];while(1){int ret = epoll_wait(epfd, all, MAXSIZE, -1);if(ret == -1){perror("epoll_wait error");exit(1);}// 遍历发生变化的节点for(int i=0; i<ret; ++i){// 只处理读事件, 其他事件默认不处理struct epoll_event *pev = &all[i];if(!(pev->events & EPOLLIN)){// 不是读事件continue;}if(pev->data.fd == lfd){// 接受连接请求do_accept(lfd, epfd);}else{// 读数据do_read(pev->data.fd, epfd);}}}
}int init_listen_fd(int port, int epfd)
{// 创建监听的套接字int lfd = socket(AF_INET, SOCK_STREAM, 0);if(lfd == -1){perror("socket error");exit(1);}// lfd绑定本地IP和portstruct sockaddr_in serv;memset(&serv, 0, sizeof(serv));serv.sin_family = AF_INET;serv.sin_port = htons(port);serv.sin_addr.s_addr = htonl(INADDR_ANY);// 端口复用int flag = 1;setsockopt(lfd, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));int ret = bind(lfd, (struct sockaddr*)&serv, sizeof(serv));if(ret == -1){perror("bind error");exit(1);}// 设置监听ret = listen(lfd, 64);if(ret == -1){perror("listen error");exit(1);}// lfd添加到epoll树上struct epoll_event ev;ev.events = EPOLLIN;ev.data.fd = lfd;ret = epoll_ctl(epfd, EPOLL_CTL_ADD, lfd, &ev);if(ret == -1){perror("epoll_ctl add lfd error");exit(1);}return lfd;
}
03 epoll模型接受连接请求函数
// 接受新连接处理
void do_accept(int lfd, int epfd)
{struct sockaddr_in client;socklen_t len = sizeof(client);int cfd = accept(lfd, (struct sockaddr*)&client, &len);if(cfd == -1){perror("accept error");exit(1);}// 打印客户端信息char ip[64] = {0};printf("New Client IP: %s, Port: %d, cfd = %d\n",inet_ntop(AF_INET, &client.sin_addr.s_addr, ip, sizeof(ip)),ntohs(client.sin_port), cfd);// 设置cfd为非阻塞int flag = fcntl(cfd, F_GETFL);flag |= O_NONBLOCK;fcntl(cfd, F_SETFL, flag);// 得到的新节点挂到epoll树上struct epoll_event ev;ev.data.fd = cfd;// 边沿非阻塞模式ev.events = EPOLLIN | EPOLLET;int ret = epoll_ctl(epfd, EPOLL_CTL_ADD, cfd, &ev);if(ret == -1){perror("epoll_ctl add cfd error");exit(1);}
}
04 getline函数
// 解析http请求消息的每一行内容
int get_line(int sock, char *buf, int size)
{int i = 0;char c = '\0';int n;while ((i < size - 1) && (c != '\n')){n = recv(sock, &c, 1, 0);if (n > 0){if (c == '\r'){n = recv(sock, &c, 1, MSG_PEEK);if ((n > 0) && (c == '\n')){recv(sock, &c, 1, 0);}else{c = '\n';}}buf[i] = c;i++;}else{c = '\n';}}buf[i] = '\0';return i;
}
05 do_read函数
// 读数据
void do_read(int cfd, int epfd)
{// 将浏览器发过来的数据, 读到buf中 char line[1024] = {0};// 读请求行int len = get_line(cfd, line, sizeof(line));if(len == 0){printf("客户端断开了连接...\n");// 关闭套接字, cfd从epoll上deldisconnect(cfd, epfd); }else{printf("请求行数据: %s", line);printf("============= 请求头 ============\n");// 还有数据没读完// 继续读while(len){char buf[1024] = {0};len = get_line(cfd, buf, sizeof(buf));printf("-----: %s", buf);}printf("============= The End ============\n");}// 请求行: get /xxx http/1.1// 判断是不是get请求if(strncasecmp("get", line, 3) == 0){// 处理http请求http_request(line, cfd);// 关闭套接字, cfd从epoll上deldisconnect(cfd, epfd); }
}
06 正则表达式入门
http://deerchao.net/tutorials/regex/regex.htm
http://www.jb51.net/tools/regexsc.htm
正则表达式速查表
常用正则表达式
07 sscanf使用正则表达式格式化字符串
sscanf 函数
函数描述: 读取格式化的字符串中的数据。
函数原型:
int sscanf(
const char *buffer,
const char *format, [ argument ] ...
);
-
取到指定字符为止的字符串。如在下例中，取遇到空格为止字符串。
1 sscanf(“123456 abcdedf”, “%[^ ]”, buf);
2 printf(“%s\n”, buf);
结果为：123456 -
取仅包含指定字符集的字符串。如在下例中，取仅包含1到9和小写字母的字符串。
1 sscanf(“123456abcdedfBCDEF”, “%[1-9a-z]”, buf);
2 printf(“%s\n”, buf);
结果为：123456abcdedf -
取到指定字符集为止的字符串。如在下例中，取遇到大写字母为止的字符串。
1 sscanf(“123456abcdedfBCDEF”, “%[^A-Z]”, buf);
2 printf(“%s\n”, buf);
结果为：123456abcdedf
08 http_resquest函数
// 断开连接的函数
void disconnect(int cfd, int epfd)
{int ret = epoll_ctl(epfd, EPOLL_CTL_DEL, cfd, NULL);if(ret == -1){perror("epoll_ctl del cfd error");exit(1);}close(cfd);
}// http请求处理
void http_request(const char* request, int cfd)
{// 拆分http请求行// get /xxx http/1.1char method[12], path[1024], protocol[12];sscanf(request, "%[^ ] %[^ ] %[^ ]", method, path, protocol);printf("method = %s, path = %s, protocol = %s\n", method, path, protocol);// 转码 将不能识别的中文乱码 - > 中文// 解码 %23 %34 %5fdecode_str(path, path);// 处理path /xx// 去掉path中的/char* file = path+1;// 如果没有指定访问的资源, 默认显示资源目录中的内容if(strcmp(path, "/") == 0){// file的值, 资源目录的当前位置file = "./";}// 获取文件属性struct stat st;int ret = stat(file, &st);if(ret == -1){// show 404send_respond_head(cfd, 404, "File Not Found", ".html", -1);send_file(cfd, "404.html");}// 判断是目录还是文件// 如果是目录if(S_ISDIR(st.st_mode)){// 发送头信息send_respond_head(cfd, 200, "OK", get_file_type(".html"), -1);// 发送目录信息send_dir(cfd, file);}else if(S_ISREG(st.st_mode)){// 文件// 发送消息报头send_respond_head(cfd, 200, "OK", get_file_type(file), st.st_size);// 发送文件内容send_file(cfd, file);}
}
09 发送http响应头函数
// 发送响应头
void send_respond_head(int cfd, int no, const char* desp, const char* type, long len)
{char buf[1024] = {0};// 状态行sprintf(buf, "http/1.1 %d %s\r\n", no, desp);send(cfd, buf, strlen(buf), 0);// 消息报头sprintf(buf, "Content-Type:%s\r\n", type);sprintf(buf+strlen(buf), "Content-Length:%ld\r\n", len);send(cfd, buf, strlen(buf), 0);// 空行send(cfd, "\r\n", 2, 0);
}
10 发送普通文件函数实现
// 发送文件
void send_file(int cfd, const char* filename)
{// 打开文件int fd = open(filename, O_RDONLY);if(fd == -1){// show 404return;}// 循环读文件char buf[4096] = {0};int len = 0;while( (len = read(fd, buf, sizeof(buf))) > 0 ){// 发送读出的数据send(cfd, buf, len, 0);}if(len == -1){perror("read file error");exit(1);}close(fd);
}11 使用readdir读目录和scandir读目录
#include <dirent.h>
int scandir(const char *dirp,
int (*filter)(const struct dirent *),
int (*compar)(const struct dirent **,
const struct dirent **));
dirp
-当前要扫描的目录
namelist
-struct dirent** ptr;
-struct dirent* ptr[];
-&ptr;
filter
-NULL
compar
○ 文件名显示的时候, 指定排序规则
alphasort
versionsort
// 发送目录内容
void send_dir(int cfd, const char* dirname)
{// 拼一个html页面<table></table>char buf[4094] = {0};sprintf(buf, "<html><head><title>目录名: %s</title></head>", dirname);sprintf(buf+strlen(buf), "<body><h1>当前目录: %s</h1><table>", dirname);char enstr[1024] = {0};char path[1024] = {0};// 目录项二级指针struct dirent** ptr;int num = scandir(dirname, &ptr, NULL, alphasort);// 遍历for(int i=0; i<num; ++i){char* name = ptr[i]->d_name;// 拼接文件的完整路径sprintf(path, "%s/%s", dirname, name);printf("path = %s ===================\n", path);struct stat st;stat(path, &st);encode_str(enstr, sizeof(enstr), name);// 如果是文件if(S_ISREG(st.st_mode)){sprintf(buf+strlen(buf), "<tr><td><a href=\"%s\">%s</a></td><td>%ld</td></tr>",enstr, name, (long)st.st_size);}// 如果是目录else if(S_ISDIR(st.st_mode)){sprintf(buf+strlen(buf), "<tr><td><a href=\"%s/\">%s/</a></td><td>%ld</td></tr>",enstr, name, (long)st.st_size);}send(cfd, buf, strlen(buf), 0);memset(buf, 0, sizeof(buf));// 字符串拼接}sprintf(buf+strlen(buf), "</table></body></html>");send(cfd, buf, strlen(buf), 0);printf("dir message send OK!!!!\n");
#if 0// 打开目录DIR* dir = opendir(dirname);if(dir == NULL){perror("opendir error");exit(1);}// 读目录struct dirent* ptr = NULL;while( (ptr = readdir(dir)) != NULL ){char* name = ptr->d_name;}closedir(dir);
#endif
}
12 处理http协议需要编码和解码的原因
url在数据传输过程中不支持中文，需要转码。
- 汉字
- 特殊字符
○ 查看manpage
man ascii
○ 要处理可见字符
从space开始 - 32
前0-31个不可见
○ 不需要转换的特殊字符
.
_
*
/
~
0-9
a-z
A-Z
○ 需要转换的字符使用其16进制的值前加%表示
可以在shell下通过unicode工具查看
安装unicode
sudo apt-get install unicode
13 编解码函数介绍
/** 这里的内容是处理%20之类的东西！是"解码"过程。* %20 URL编码中的‘ ’(space)* %21 '!' %22 '"' %23 '#' %24 '$'* %25 '%' %26 '&' %27 ''' %28 '('......* 相关知识html中的‘ ’(space)是 */
void encode_str(char* to, int tosize, const char* from)
{int tolen;for (tolen = 0; *from != '\0' && tolen + 4 < tosize; ++from) {if (isalnum(*from) || strchr("/_.-~", *from) != (char*)0) {*to = *from;++to;++tolen;} else {sprintf(to, "%%%02x", (int) *from & 0xff);to += 3;tolen += 3;}}*to = '\0';
}void decode_str(char *to, char *from)
{for ( ; *from != '\0'; ++to, ++from ) {if (from[0] == '%' && isxdigit(from[1]) && isxdigit(from[2])) { *to = hexit(from[1])*16 + hexit(from[2]);from += 2; } else{*to = *from;}}*to = '\0';
}
14 程序测试
epoll_server.h:
#ifndef _EPOLL_SERVER_H
#define _EPOLL_SERVER_Hint init_listen_fd(int port, int epfd);
void epoll_run(int port);
void do_accept(int lfd, int epfd);
void do_read(int cfd, int epfd);
int get_line(int sock, char *buf, int size);
void disconnect(int cfd, int epfd);
void http_request(const char* request, int cfd);
void send_respond_head(int cfd, int no, const char* desp, const char* type, long len);
void send_file(int cfd, const char* filename);
void send_dir(int cfd, const char* dirname);
void encode_str(char* to, int tosize, const char* from);
void decode_str(char *to, char *from);
const char *get_file_type(const char *name);#endif
epoll_server.c：
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <string.h>
#include <sys/epoll.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <dirent.h>
#include <sys/stat.h>
#include <ctype.h>
#include "epoll_server.h"#define MAXSIZE 2000void epoll_run(int port)
{// 创建一个epoll树的根节点int epfd = epoll_create(MAXSIZE);if(epfd == -1){perror("epoll_create error");exit(1);}// 添加要监听的节点// 先添加监听lfdint lfd = init_listen_fd(port, epfd);// 委托内核检测添加到树上的节点struct epoll_event all[MAXSIZE];while(1){int ret = epoll_wait(epfd, all, MAXSIZE, -1);if(ret == -1){perror("epoll_wait error");exit(1);}// 遍历发生变化的节点for(int i=0; i<ret; ++i){// 只处理读事件, 其他事件默认不处理struct epoll_event *pev = &all[i];if(!(pev->events & EPOLLIN)){// 不是读事件continue;}if(pev->data.fd == lfd){// 接受连接请求do_accept(lfd, epfd);}else{// 读数据do_read(pev->data.fd, epfd);}}}
}// 读数据
void do_read(int cfd, int epfd)
{// 将浏览器发过来的数据, 读到buf中 char line[1024] = {0};// 读请求行int len = get_line(cfd, line, sizeof(line));if(len == 0){printf("客户端断开了连接...\n");// 关闭套接字, cfd从epoll上deldisconnect(cfd, epfd); }else{printf("请求行数据: %s", line);printf("============= 请求头 ============\n");// 还有数据没读完// 继续读while(len){char buf[1024] = {0};len = get_line(cfd, buf, sizeof(buf));printf("-----: %s", buf);}printf("============= The End ============\n");}// 请求行: get /xxx http/1.1// 判断是不是get请求if(strncasecmp("get", line, 3) == 0){// 处理http请求http_request(line, cfd);// 关闭套接字, cfd从epoll上deldisconnect(cfd, epfd); }
}// 断开连接的函数
void disconnect(int cfd, int epfd)
{int ret = epoll_ctl(epfd, EPOLL_CTL_DEL, cfd, NULL);if(ret == -1){perror("epoll_ctl del cfd error");exit(1);}close(cfd);
}// http请求处理
void http_request(const char* request, int cfd)
{// 拆分http请求行// get /xxx http/1.1char method[12], path[1024], protocol[12];sscanf(request, "%[^ ] %[^ ] %[^ ]", method, path, protocol);printf("method = %s, path = %s, protocol = %s\n", method, path, protocol);// 转码 将不能识别的中文乱码 - > 中文// 解码 %23 %34 %5fdecode_str(path, path);// 处理path /xx// 去掉path中的/char* file = path+1;// 如果没有指定访问的资源, 默认显示资源目录中的内容if(strcmp(path, "/") == 0){// file的值, 资源目录的当前位置file = "./";}// 获取文件属性struct stat st;int ret = stat(file, &st);if(ret == -1){// show 404send_respond_head(cfd, 404, "File Not Found", ".html", -1);send_file(cfd, "404.html");}// 判断是目录还是文件// 如果是目录if(S_ISDIR(st.st_mode)){// 发送头信息send_respond_head(cfd, 200, "OK", get_file_type(".html"), -1);// 发送目录信息send_dir(cfd, file);}else if(S_ISREG(st.st_mode)){// 文件// 发送消息报头send_respond_head(cfd, 200, "OK", get_file_type(file), st.st_size);// 发送文件内容send_file(cfd, file);}
}// 发送目录内容
void send_dir(int cfd, const char* dirname)
{// 拼一个html页面<table></table>char buf[4094] = {0};sprintf(buf, "<html><head><title>目录名: %s</title></head>", dirname);sprintf(buf+strlen(buf), "<body><h1>当前目录: %s</h1><table>", dirname);char enstr[1024] = {0};char path[1024] = {0};// 目录项二级指针struct dirent** ptr;int num = scandir(dirname, &ptr, NULL, alphasort);// 遍历for(int i=0; i<num; ++i){char* name = ptr[i]->d_name;// 拼接文件的完整路径sprintf(path, "%s/%s", dirname, name);printf("path = %s ===================\n", path);struct stat st;stat(path, &st);encode_str(enstr, sizeof(enstr), name);// 如果是文件if(S_ISREG(st.st_mode)){sprintf(buf+strlen(buf), "<tr><td><a href=\"%s\">%s</a></td><td>%ld</td></tr>",enstr, name, (long)st.st_size);}// 如果是目录else if(S_ISDIR(st.st_mode)){sprintf(buf+strlen(buf), "<tr><td><a href=\"%s/\">%s/</a></td><td>%ld</td></tr>",enstr, name, (long)st.st_size);}send(cfd, buf, strlen(buf), 0);memset(buf, 0, sizeof(buf));// 字符串拼接}sprintf(buf+strlen(buf), "</table></body></html>");send(cfd, buf, strlen(buf), 0);printf("dir message send OK!!!!\n");
#if 0// 打开目录DIR* dir = opendir(dirname);if(dir == NULL){perror("opendir error");exit(1);}// 读目录struct dirent* ptr = NULL;while( (ptr = readdir(dir)) != NULL ){char* name = ptr->d_name;}closedir(dir);
#endif
}// 发送响应头
void send_respond_head(int cfd, int no, const char* desp, const char* type, long len)
{char buf[1024] = {0};// 状态行sprintf(buf, "http/1.1 %d %s\r\n", no, desp);send(cfd, buf, strlen(buf), 0);// 消息报头sprintf(buf, "Content-Type:%s\r\n", type);sprintf(buf+strlen(buf), "Content-Length:%ld\r\n", len);send(cfd, buf, strlen(buf), 0);// 空行send(cfd, "\r\n", 2, 0);
}// 发送文件
void send_file(int cfd, const char* filename)
{// 打开文件int fd = open(filename, O_RDONLY);if(fd == -1){// show 404return;}// 循环读文件char buf[4096] = {0};int len = 0;while( (len = read(fd, buf, sizeof(buf))) > 0 ){// 发送读出的数据send(cfd, buf, len, 0);}if(len == -1){perror("read file error");exit(1);}close(fd);
}// 解析http请求消息的每一行内容
int get_line(int sock, char *buf, int size)
{int i = 0;char c = '\0';int n;while ((i < size - 1) && (c != '\n')){n = recv(sock, &c, 1, 0);if (n > 0){if (c == '\r'){n = recv(sock, &c, 1, MSG_PEEK);if ((n > 0) && (c == '\n')){recv(sock, &c, 1, 0);}else{c = '\n';}}buf[i] = c;i++;}else{c = '\n';}}buf[i] = '\0';return i;
}// 接受新连接处理
void do_accept(int lfd, int epfd)
{struct sockaddr_in client;socklen_t len = sizeof(client);int cfd = accept(lfd, (struct sockaddr*)&client, &len);if(cfd == -1){perror("accept error");exit(1);}// 打印客户端信息char ip[64] = {0};printf("New Client IP: %s, Port: %d, cfd = %d\n",inet_ntop(AF_INET, &client.sin_addr.s_addr, ip, sizeof(ip)),ntohs(client.sin_port), cfd);// 设置cfd为非阻塞int flag = fcntl(cfd, F_GETFL);flag |= O_NONBLOCK;fcntl(cfd, F_SETFL, flag);// 得到的新节点挂到epoll树上struct epoll_event ev;ev.data.fd = cfd;// 边沿非阻塞模式ev.events = EPOLLIN | EPOLLET;int ret = epoll_ctl(epfd, EPOLL_CTL_ADD, cfd, &ev);if(ret == -1){perror("epoll_ctl add cfd error");exit(1);}
}int init_listen_fd(int port, int epfd)
{// 创建监听的套接字int lfd = socket(AF_INET, SOCK_STREAM, 0);if(lfd == -1){perror("socket error");exit(1);}// lfd绑定本地IP和portstruct sockaddr_in serv;memset(&serv, 0, sizeof(serv));serv.sin_family = AF_INET;serv.sin_port = htons(port);serv.sin_addr.s_addr = htonl(INADDR_ANY);// 端口复用int flag = 1;setsockopt(lfd, SOL_SOCKET, SO_REUSEADDR, &flag, sizeof(flag));int ret = bind(lfd, (struct sockaddr*)&serv, sizeof(serv));if(ret == -1){perror("bind error");exit(1);}// 设置监听ret = listen(lfd, 64);if(ret == -1){perror("listen error");exit(1);}// lfd添加到epoll树上struct epoll_event ev;ev.events = EPOLLIN;ev.data.fd = lfd;ret = epoll_ctl(epfd, EPOLL_CTL_ADD, lfd, &ev);if(ret == -1){perror("epoll_ctl add lfd error");exit(1);}return lfd;
}// 16进制数转化为10进制
int hexit(char c)
{if (c >= '0' && c <= '9')return c - '0';if (c >= 'a' && c <= 'f')return c - 'a' + 10;if (c >= 'A' && c <= 'F')return c - 'A' + 10;return 0;
}/** 这里的内容是处理%20之类的东西！是"解码"过程。* %20 URL编码中的‘ ’(space)* %21 '!' %22 '"' %23 '#' %24 '$'* %25 '%' %26 '&' %27 ''' %28 '('......* 相关知识html中的‘ ’(space)是 */
void encode_str(char* to, int tosize, const char* from)
{int tolen;for (tolen = 0; *from != '\0' && tolen + 4 < tosize; ++from) {if (isalnum(*from) || strchr("/_.-~", *from) != (char*)0) {*to = *from;++to;++tolen;} else {sprintf(to, "%%%02x", (int) *from & 0xff);to += 3;tolen += 3;}}*to = '\0';
}void decode_str(char *to, char *from)
{for ( ; *from != '\0'; ++to, ++from ) {if (from[0] == '%' && isxdigit(from[1]) && isxdigit(from[2])) { *to = hexit(from[1])*16 + hexit(from[2]);from += 2; } else{*to = *from;}}*to = '\0';}// 通过文件名获取文件的类型
const char *get_file_type(const char *name)
{char* dot;// 自右向左查找‘.’字符, 如不存在返回NULLdot = strrchr(name, '.'); if (dot == NULL)return "text/plain; charset=utf-8";if (strcmp(dot, ".html") == 0 || strcmp(dot, ".htm") == 0)return "text/html; charset=utf-8";if (strcmp(dot, ".jpg") == 0 || strcmp(dot, ".jpeg") == 0)return "image/jpeg";if (strcmp(dot, ".gif") == 0)return "image/gif";if (strcmp(dot, ".png") == 0)return "image/png";if (strcmp(dot, ".css") == 0)return "text/css";if (strcmp(dot, ".au") == 0)return "audio/basic";if (strcmp( dot, ".wav" ) == 0)return "audio/wav";if (strcmp(dot, ".avi") == 0)return "video/x-msvideo";if (strcmp(dot, ".mov") == 0 || strcmp(dot, ".qt") == 0)return "video/quicktime";if (strcmp(dot, ".mpeg") == 0 || strcmp(dot, ".mpe") == 0)return "video/mpeg";if (strcmp(dot, ".vrml") == 0 || strcmp(dot, ".wrl") == 0)return "model/vrml";if (strcmp(dot, ".midi") == 0 || strcmp(dot, ".mid") == 0)return "audio/midi";if (strcmp(dot, ".mp3") == 0)return "audio/mpeg";if (strcmp(dot, ".ogg") == 0)return "application/ogg";if (strcmp(dot, ".pac") == 0)return "application/x-ns-proxy-autoconfig";return "text/plain; charset=utf-8";
}
main.c：
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
#include "epoll_server.h"int main(int argc, const char* argv[])
{if(argc < 3){printf("eg: ./a.out port path\n");exit(1);}// 端口int port = atoi(argv[1]);// 修改进程的工作目录, 方便后续操作int ret = chdir(argv[2]);if(ret == -1){perror("chdir error");exit(1);}// 启动epoll模型 epoll_run(port);return 0;
}
