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114 lines
2.8 KiB
114 lines
2.8 KiB
#include <iostream>
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#include <event2/event.h>
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#include <string.h>
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#include <thread>
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#include <errno.h>
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#define SPORT 5001
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#ifdef _WIN32
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#else
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#include <signal.h>
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#endif // !_WIN32
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using namespace std;
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//正常断开连接也会进入 超时会进入
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void client_cb(evutil_socket_t s,short w,void *arg){
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//水平触发LT 只要有数据没处理会 一直进入
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//边缘触发ET 有数据时只触发一次
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event *ev = (event *) arg;
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if(w&EV_TIMEOUT){
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cout << "timeout" << endl;
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//需要清理event
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event_free(ev);
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evutil_closesocket(s);
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return;
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}
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char buf[1024]= {0};
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int len = recv(s,buf,sizeof(buf)-1,0);
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if(len > 0){
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cout << buf << flush;
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send(s,"ok",2,0);
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}
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else{
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//需要清理event
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cout << "event_free" << endl;
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event_free(ev);
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evutil_closesocket(s);
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}
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}
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void listen_cb(evutil_socket_t s,short w,void *arg){
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cout << "listen_cb" << endl;
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sockaddr_in sin;
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socklen_t size = sizeof(sin);
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//读取连接信息
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evutil_socket_t client = accept(s,(sockaddr*)&sin,&size);
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char ip[16] = {0};
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evutil_inet_ntop(AF_INET,&sin.sin_addr,ip,sizeof(ip)-1);
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cout << "client ip is " << ip << endl;
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//客户端数据读取事件
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event_base *base = (event_base*)arg;
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event *ev = event_new(base,client,EV_READ|EV_PERSIST ,client_cb,event_self_cbarg());
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timeval t = {10,0};
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event_add(ev,&t);
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}
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int main(int agrc,char** agrv){
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#ifdef _WIN32
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//初始化socket库
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WSADATA wsa;
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WSAStartup(MAKEWORD(2, 2), &wsa);
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#else
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if (signal(SIGPIPE, SIG_IGN) == SIG_ERR) { //忽略管道信号，发送数据给已关闭的socket，会飞掉！
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return 1;
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}
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#endif
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event_base *base = event_base_new();
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cout << "test event server" << endl;
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evutil_socket_t sock = socket(AF_INET,SOCK_STREAM,0);
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if(sock == 0){
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cout << "socket error:" << strerror(errno) << endl;
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return -1;
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}
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//绑定端口地址
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sockaddr_in sin;
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memset(&sin,0,sizeof(sin));
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sin.sin_family = AF_INET;
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sin.sin_port = htons(SPORT);
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int re = ::bind(sock,(sockaddr*)&sin,sizeof(sin));
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if(re != 0){
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cerr << "bind error: " << strerror(errno) << endl;
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return -1;
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}
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//设置地址复用和非阻塞
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evutil_make_socket_nonblocking(sock);
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evutil_make_listen_socket_reuseable(sock);
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//开始监听
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listen(sock,10);
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//开始接收连接事件
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event *ev = event_new(base,sock,EV_READ|EV_PERSIST /* |EV_ET*/ ,listen_cb,base); //默认水平触发
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event_add(ev,0);
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//进入事件主循环
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event_base_dispatch(base);
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evutil_closesocket(sock);
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event_base_free(base);
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return 0;
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}
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