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https://gitee.com/acl-dev/acl.git
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320 lines
7.4 KiB
C++
320 lines
7.4 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/string.hpp"
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#include "acl_cpp/stdlib/util.hpp"
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#include "acl_cpp/stream/aio_handle.hpp"
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#include "acl_cpp/stream/aio_socket_stream.hpp"
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#ifdef WIN32
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# ifndef snprintf
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# define snprintf _snprintf
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# endif
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#endif
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typedef struct
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{
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acl::aio_handle* handle;
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char addr[64];
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int connect_timeout;
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int read_timeout;
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int nopen_limit;
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int nopen_total;
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int nwrite_limit;
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int nwrite_total;
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int nread_total;
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int id_begin;
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bool debug;
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} IO_CTX;
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static bool connect_server(IO_CTX* ctx, int id);
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/**
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* 客户端异步连接流回调函数类
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*/
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class client_io_callback : public acl::aio_open_callback
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{
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public:
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/**
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* 构造函数
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* @param ctx {IO_CTX*}
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* @param client {aio_socket_stream*} 异步连接流
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* @param id {int} 本流的ID号
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*/
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client_io_callback(IO_CTX* ctx, acl::aio_socket_stream* client, int id)
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: client_(client)
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, ctx_(ctx)
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, nwrite_(0)
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, id_(id)
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{
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}
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~client_io_callback(void)
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{
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std::cout << ">>>ID: " << id_ << ", io_callback deleted now!" << std::endl;
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}
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/**
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* 基类虚函数, 当异步流读到所要求的数据时调用此回调函数
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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} 返回给调用者 true 表示继续，否则表示需要关闭异步流
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*/
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bool read_callback(char* data, int len)
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{
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(void) len;
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ctx_->nread_total++;
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if (ctx_->debug) {
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if (nwrite_ < 10) {
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std::cout << "gets(" << nwrite_ << "): " << data;
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} else if (nwrite_ % 2000 == 0) {
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std::cout << ">>ID: " << id_ << ", I: "
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<< nwrite_ << "; "<< data;
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}
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}
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// 如果收到服务器的退出消息，则也应退出
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if (acl::strncasecmp_(data, "quit", 4) == 0) {
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// 向服务器发送数据
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client_->format("Bye!\r\n");
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// 关闭异步流连接
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client_->close();
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return true;
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}
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if (nwrite_ >= ctx_->nwrite_limit) {
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if (ctx_->debug) {
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std::cout << "ID: " << id_
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<< ", nwrite: " << nwrite_
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<< ", nwrite_limit: " << ctx_->nwrite_limit
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<< ", quiting ..." << std::endl;
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}
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// 向服务器发送退出消息
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client_->format("quit\r\n");
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client_->close();
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} else {
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char buf[256];
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snprintf(buf, sizeof(buf), "hello world: %d\n", nwrite_);
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client_->write(buf, (int) strlen(buf));
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// 向服务器发送数据
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//client_->format("hello world: %d\n", nwrite_);
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}
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return true;
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}
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/**
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* 基类虚函数, 当异步流写成功时调用此回调函数
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* @return {bool} 返回给调用者 true 表示继续，否则表示需要关闭异步流
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*/
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bool write_callback(void)
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{
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ctx_->nwrite_total++;
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nwrite_++;
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// 从服务器读一行数据
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client_->gets(ctx_->read_timeout, false);
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return true;
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}
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/**
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* 基类虚函数, 当该异步流关闭时调用此回调函数
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*/
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void close_callback(void)
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{
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if (!client_->is_opened()) {
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std::cout << "Id: " << id_ << " connect "
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<< ctx_->addr << " error: "
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<< acl::last_serror();
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// 如果是第一次连接就失败，则退出
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if (ctx_->nopen_total == 0) {
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std::cout << ", first connect error, quit";
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/* 获得异步引擎句柄，并设置为退出状态 */
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client_->get_handle().stop();
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}
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std::cout << std::endl;
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delete this;
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return;
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}
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/* 获得异步引擎中受监控的异步流个数 */
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int nleft = client_->get_handle().length();
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if (ctx_->nopen_total == ctx_->nopen_limit && nleft == 1) {
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std::cout << "Id: " << id_ << " stop now! nstream: "
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<< nleft << std::endl;
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/* 获得异步引擎句柄，并设置为退出状态 */
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client_->get_handle().stop();
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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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* 基类虚函数，当异步流超时时调用此函数
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* @return {bool} 返回给调用者 true 表示继续，否则表示需要关闭异步流
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*/
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bool timeout_callback(void)
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{
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std::cout << "Connect " << ctx_->addr << " Timeout ..." << std::endl;
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client_->close();
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return false;
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}
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/**
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* 基类虚函数, 当异步连接成功后调用此函数
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* @return {bool} 返回给调用者 true 表示继续，否则表示需要关闭异步流
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*/
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bool open_callback(void)
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{
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// 连接成功，设置IO读写回调函数
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client_->add_read_callback(this);
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client_->add_write_callback(this);
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ctx_->nopen_total++;
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acl::assert_(id_ > 0);
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if (ctx_->nopen_total < ctx_->nopen_limit) {
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// 开始进行下一个连接过程
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if (connect_server(ctx_, id_ + 1) == false) {
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std::cout << "connect error!" << std::endl;
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}
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}
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// 异步向服务器发送数据
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//client_->format("hello world: %d\n", nwrite_);
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char buf[256];
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snprintf(buf, sizeof(buf), "hello world: %d\n", nwrite_);
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client_->write(buf, (int) strlen(buf));
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// 异步从服务器读取一行数据
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client_->gets(ctx_->read_timeout, false);
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// 表示继续异步过程
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return true;
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}
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private:
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acl::aio_socket_stream* client_;
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IO_CTX* ctx_;
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int nwrite_;
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int id_;
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};
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static bool connect_server(IO_CTX* ctx, int id)
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{
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// 开始异步连接远程服务器
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acl::aio_socket_stream* stream = acl::aio_socket_stream::open
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(ctx->handle, ctx->addr, ctx->connect_timeout);
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if (stream == NULL) {
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std::cout << "connect " << ctx->addr << " error!" << std::endl;
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std::cout << "stoping ..." << std::endl;
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if (id == 0)
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ctx->handle->stop();
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return false;
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}
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// 创建连接后的回调函数类
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client_io_callback* callback = new client_io_callback(ctx, stream, id);
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// 添加连接成功的回调函数类
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stream->add_open_callback(callback);
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// 添加连接失败后回调函数类
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stream->add_close_callback(callback);
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// 添加连接超时的回调函数类
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stream->add_timeout_callback(callback);
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return true;
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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] -l server_addr -c nconnect"
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" -n io_max -k[use kernel event: epoll/kqueue/devpoll"
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" -t connect_timeout -d[debug]\n", 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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IO_CTX ctx;
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memset(&ctx, 0, sizeof(ctx));
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ctx.connect_timeout = 5;
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ctx.nopen_limit = 10;
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ctx.id_begin = 1;
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ctx.nwrite_limit = 10;
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ctx.debug = false;
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snprintf(ctx.addr, sizeof(ctx.addr), "127.0.0.1:9001");
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while ((ch = getopt(argc, argv, "hc:n:kl:dt:")) > 0) {
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switch (ch) {
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case 'c':
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ctx.nopen_limit = atoi(optarg);
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if (ctx.nopen_limit <= 0)
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ctx.nopen_limit = 10;
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break;
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case 'n':
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ctx.nwrite_limit = atoi(optarg);
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if (ctx.nwrite_limit <= 0)
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ctx.nwrite_limit = 10;
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break;
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case 'h':
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usage(argv[0]);
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return (0);
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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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snprintf(ctx.addr, sizeof(ctx.addr), "%s", optarg);
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break;
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case 'd':
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ctx.debug = true;
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break;
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case 't':
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ctx.connect_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::meter_time(__FUNCTION__, __LINE__, "-----BEGIN-----");
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acl::acl_cpp_init();
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acl::aio_handle handle(use_kernel ? acl::ENGINE_KERNEL : acl::ENGINE_SELECT);
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ctx.handle = &handle;
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if (connect_server(&ctx, ctx.id_begin) == false) {
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std::cout << "enter any key to exit." << std::endl;
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getchar();
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return 1;
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}
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std::cout << "Connect " << ctx.addr << " ..." << std::endl;
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while (true) {
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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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break;
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}
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}
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acl::string buf;
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buf << "total open: " << ctx.nopen_total
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<< ", total write: " << ctx.nwrite_total
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<< ", total read: " << ctx.nread_total;
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acl::meter_time(__FUNCTION__, __LINE__, buf.c_str());
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return 0;
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}
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