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342 lines
7.1 KiB
C++
342 lines
7.1 KiB
C++
#include <iostream>
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#include <assert.h>
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#include "lib_acl.h"
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#include "acl_cpp/acl_cpp_init.hpp"
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#include "acl_cpp/stdlib/log.hpp"
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#include "acl_cpp/stream/aio_handle.hpp"
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#include "acl_cpp/stream/aio_istream.hpp"
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#include "acl_cpp/stream/aio_listen_stream.hpp"
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#include "acl_cpp/stream/aio_socket_stream.hpp"
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using namespace acl;
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static int __max = 0;
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static int __timeout = 0;
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/**
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* 延迟读回调处理类
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*/
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class timer_reader: public aio_timer_reader
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{
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public:
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timer_reader(int delay)
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{
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delay_ = delay;
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std::cout << "timer_reader init, delay: " << delay << std::endl;
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}
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~timer_reader()
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{
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}
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// aio_timer_reader 的子类必须重载 destroy 方法
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void destroy()
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{
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std::cout << "timer_reader delete, delay: " << delay_ << std::endl;
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delete this;
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}
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// 重载基类回调方法
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virtual void timer_callback(unsigned int id)
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{
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std::cout << "timer_reader(" << id
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<< "): timer_callback, delay: " << delay_ << std::endl;
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// 调用基类的处理过程
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aio_timer_reader::timer_callback(id);
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}
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private:
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int delay_;
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};
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/**
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* 延迟写回调处理类
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*/
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class timer_writer: public aio_timer_writer
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{
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public:
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timer_writer(int delay)
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{
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delay_ = delay;
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std::cout << "timer_writer init, delay: " << delay << std::endl;
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}
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~timer_writer()
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{
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}
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// aio_timer_reader 的子类必须重载 destroy 方法
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void destroy()
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{
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std::cout << "timer_writer delete, delay: " << delay_ << std::endl;
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delete this;
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}
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// 重载基类回调方法
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virtual void timer_callback(unsigned int id)
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{
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std::cout << "timer_writer(" << id << "): timer_callback, delay: "
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<< delay_ << std::endl;
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// 调用基类的处理过程
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aio_timer_writer::timer_callback(id);
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}
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private:
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int delay_;
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};
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/**
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* 异步客户端流的回调类的子类
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*/
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class io_callback : public aio_callback
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{
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public:
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io_callback(aio_socket_stream* client)
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: client_(client)
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, i_(0)
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{
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}
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~io_callback()
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{
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std::cout << "delete io_callback now ..." << std::endl;
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}
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/**
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* 实现父类中的虚函数，客户端流的读成功回调过程
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* @param data {char*} 读到的数据地址
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* @param len {int} 读到的数据长度
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* @return {bool} 返回 true 表示继续，否则希望关闭该异步流
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*/
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bool read_callback(char* data, int len)
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{
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i_++;
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if (i_ < 10)
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std::cout << ">>gets(i:" << i_ << "): "
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<< data << std::endl;
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// 如果远程客户端希望退出，则关闭之
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if (strncasecmp(data, "quit", 4) == 0)
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{
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client_->format("Bye!\r\n");
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client_->close();
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}
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// 如果远程客户端希望服务端也关闭，则中止异步事件过程
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else if (strncasecmp(data, "stop", 4) == 0)
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{
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client_->format("Stop now!\r\n");
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client_->close(); // 关闭远程异步流
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// 通知异步引擎关闭循环过程
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client_->get_handle().stop();
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}
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// 向远程客户端回写收到的数据
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int delay = 0;
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if (strncasecmp(data, "write_delay", strlen("write_delay")) == 0)
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{
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// 延迟写过程
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const char* ptr = data + strlen("write_delay");
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delay = atoi(ptr);
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if (delay > 0)
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{
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std::cout << ">> write delay " << delay
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<< " second ..." << std::endl;
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timer_writer* timer = new timer_writer(delay);
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client_->write(data, len, delay * 1000000, timer);
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client_->gets(10, false);
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return (true);
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}
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}
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else if (strncasecmp(data, "read_delay", strlen("read_delay")) == 0)
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{
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// 延迟读过程
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const char* ptr = data + strlen("read_delay");
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delay = atoi(ptr);
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if (delay > 0)
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{
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client_->write(data, len);
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std::cout << ">> read delay " << delay
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<< " second ..." << std::endl;
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timer_reader* timer = new timer_reader(delay);
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client_->gets(10, false, delay * 1000000, timer);
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return (true);
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}
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}
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client_->write(data, len);
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//client_->gets(10, false);
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return (true);
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}
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/**
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* 实现父类中的虚函数，客户端流的写成功回调过程
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* @return {bool} 返回 true 表示继续，否则希望关闭该异步流
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*/
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bool write_callback()
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{
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return (true);
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}
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/**
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* 实现父类中的虚函数，客户端流的超时回调过程
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*/
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void close_callback()
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{
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// 必须在此处删除该动态分配的回调类对象以防止内存泄露
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delete this;
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}
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/**
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* 实现父类中的虚函数，客户端流的超时回调过程
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* @return {bool} 返回 true 表示继续，否则希望关闭该异步流
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*/
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bool timeout_callback()
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{
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std::cout << "Timeout, delete it ..." << std::endl;
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return (false);
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}
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private:
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aio_socket_stream* client_;
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int i_;
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};
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/**
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* 异步监听流的回调类的子类
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*/
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class io_accept_callback : public aio_accept_callback
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{
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public:
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io_accept_callback() {}
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~io_accept_callback()
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{
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printf(">>io_accept_callback over!\n");
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}
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/**
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* 基类虚函数，当有新连接到达后调用此回调过程
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* @param client {aio_socket_stream*} 异步客户端流
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* @return {bool} 返回 true 以通知监听流继续监听
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*/
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bool accept_callback(aio_socket_stream* client)
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{
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// 创建异步客户端流的回调对象并与该异步流进行绑定
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io_callback* callback = new io_callback(client);
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// 注册异步流的读回调过程
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client->add_read_callback(callback);
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// 注册异步流的写回调过程
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client->add_write_callback(callback);
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// 注册异步流的关闭回调过程
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client->add_close_callback(callback);
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// 注册异步流的超时回调过程
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client->add_timeout_callback(callback);
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// 当限定了行数据最大长度时
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if (__max > 0)
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client->set_buf_max(__max);
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// 从异步流读一行数据
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client->gets(__timeout, false);
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return (true);
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}
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};
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static void usage(const char* procname)
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{
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printf("usage: %s -h[help]\r\n"
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" -l ip:port\r\n"
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" -L line_max_length\r\n"
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" -t timeout\r\n"
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" -k[use kernel event: epoll/iocp/kqueue/devpool]\r\n",
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procname);
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}
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int main(int argc, char* argv[])
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{
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bool use_kernel = false;
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int ch;
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acl::string addr(":9001");
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while ((ch = getopt(argc, argv, "l:hkL:t:")) > 0)
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{
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switch (ch)
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{
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case 'h':
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usage(argv[0]);
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return (0);
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case 'l':
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addr = optarg;
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break;
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case 'k':
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use_kernel = true;
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break;
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case 'L':
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__max = atoi(optarg);
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break;
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case 't':
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__timeout = atoi(optarg);
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break;
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default:
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break;
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}
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}
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acl::log::stdout_open(true);
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// 构建异步引擎类对象
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aio_handle handle(use_kernel ? ENGINE_KERNEL : ENGINE_SELECT);
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// 创建监听异步流
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aio_listen_stream* sstream = new aio_listen_stream(&handle);
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// 初始化ACL库(尤其是在WIN32下一定要调用此函数，在UNIX平台下可不调用)
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acl::acl_cpp_init();
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// 监听指定的地址
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if (sstream->open(addr.c_str()) == false)
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{
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std::cout << "open " << addr.c_str() << " error!" << std::endl;
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sstream->close();
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// XXX: 为了保证能关闭监听流，应在此处再 check 一下
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handle.check();
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getchar();
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return (1);
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}
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// 创建回调类对象，当有新连接到达时自动调用此类对象的回调过程
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io_accept_callback callback;
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sstream->add_accept_callback(&callback);
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std::cout << "Listen: " << addr.c_str() << " ok!" << std::endl;
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while (true)
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{
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// 如果返回 false 则表示不再继续，需要退出
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if (handle.check() == false)
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{
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std::cout << "aio_server stop now ..." << std::endl;
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break;
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}
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}
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// 关闭监听流并释放流对象
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sstream->close();
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// XXX: 为了保证能关闭监听流，应在此处再 check 一下
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handle.check();
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return (0);
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}
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