314 lines
9.7 KiB
C++
314 lines
9.7 KiB
C++
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <uv.h>
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#include <pthread.h>
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#include <unistd.h>
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#include <math.h>
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#include "PQSMsg.h"
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#include "client2.h"
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// 配置参数
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#define INITIAL_DATA_SIZE 128 // 初始数据0.1KB
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#define CONNECTIONS 2 // 并发连接数 设备连接数
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#define SERVER_IP "101.132.39.45" // 目标服务器IP 阿里云服务器 "101.132.39.45""172.27.208.1"
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#define SERVER_PORT 1056 // 目标服务器端口
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#define BASE_RECONNECT_DELAY 5000 // 基础重连延迟(ms)
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#define MAX_RECONNECT_DELAY 60000 // 最大重连延迟(ms)
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#define MAX_RECONNECT_ATTEMPTS 10 // 最大重连次数
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/* 缓冲区分配回调 */
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void alloc_buffer(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf) {
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void* buffer = malloc(suggested_size);
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if (!buffer) {
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fprintf(stderr, "Memory allocation failed\n");
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*buf = uv_buf_init(NULL, 0);
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return;
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}
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*buf = uv_buf_init((char*)buffer, suggested_size);
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}
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/* 数据读取回调 */
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void on_read(uv_stream_t* stream, ssize_t nread, const uv_buf_t* buf) {
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client_context_t* ctx = (client_context_t*)stream->data;
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if (nread < 0) {
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if (nread != UV_EOF) {
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fprintf(stdout, "[Client %d] RECV ERROR: %s\n",
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ctx->index, uv_strerror(nread));
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}
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else {
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fprintf(stdout, "[Client %d] Connection closed by server\n", ctx->index);
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}
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uv_close((uv_handle_t*)stream, on_close);
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free(buf->base);
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}
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else if (nread > 0) {
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fprintf(stdout, "[Client %d] RECV %zd bytes data\n", ctx->index, nread);
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//数据传入客户端缓冲区并尝试取出合法报文格式的数据
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free(buf->base);
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}
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}
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/* 数据写入回调 */
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void on_write(uv_write_t* req, int status) {
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client_context_t* ctx = (client_context_t*)req->handle->data;
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if (status < 0) {
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fprintf(stdout, "[Client %d] SEND ERROR: %s\n",
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ctx->index, uv_strerror(status));
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}
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else {
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fprintf(stdout, "[Client %d] SEND bytes success\n",
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ctx->index);
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}
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free(req->data);
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free(req);
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}
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/* 定时组装二进制报文并发送 */
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void on_timer(uv_timer_t* handle) {
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client_context_t* ctx = (client_context_t*)handle->data;
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if (ctx->state != STATE_CONNECTED) {
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fprintf(stdout, "[Client %d] Skip sending: Not connected\n", ctx->index);
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return;
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}
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fprintf(stdout, "[Client %d] Preparing periodic data...\n", ctx->index);
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// 生成完整报文 装置云服务登录报文
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auto binary_data = generate_frontlogin_message("00-B7-8D-A8-00-D6");
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// 转换为数组形式
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unsigned char* binary_array = binary_data.data();
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size_t data_size = binary_data.size();
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// 此处可调用发送函数
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send_binary_data(ctx, binary_array, data_size);
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}
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/* 发送初始数据块 - 修复版 */
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void send_initial_data(client_context_t* ctx) {
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// 添加状态检查
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if (ctx->state != STATE_CONNECTED) {
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fprintf(stderr, "[Client %d] Cannot send initial data: not connected\n", ctx->index);
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return;
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}
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// 修正为实际数据大小 (1KB)
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const size_t data_size = INITIAL_DATA_SIZE; // 使用实际值替换 INITIAL_DATA_SIZE
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char* buffer = (char*)malloc(data_size);
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if (!buffer) {
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fprintf(stderr, "[Client %d] Failed to allocate initial data buffer\n", ctx->index);
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return;
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}
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memset(buffer, 'A', data_size);
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buffer[0] = 0xeb; buffer[1] = 0x90; buffer[2] = 0xff; buffer[15] = 0x16;
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fprintf(stdout, "[Client %d] Sending initial %zu bytes data\n", ctx->index, data_size);
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uv_buf_t buf = uv_buf_init(buffer, data_size);
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uv_write_t* write_req = (uv_write_t*)malloc(sizeof(uv_write_t));
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if (!write_req) {
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free(buffer);
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fprintf(stderr, "[Client %d] Failed to allocate write request\n", ctx->index);
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return;
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}
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write_req->data = buffer;
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// 检查uv_write返回值
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int ret = uv_write(write_req, (uv_stream_t*)&ctx->client, &buf, 1, on_write);
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if (ret < 0) {
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fprintf(stderr, "[Client %d] uv_write failed: %s\n",
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ctx->index, uv_strerror(ret));
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free(buffer);
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free(write_req);
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}
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}
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/* 发送二进制报文函数 */
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void send_binary_data(client_context_t* ctx, const unsigned char* data, size_t data_size) {
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if (ctx->state != STATE_CONNECTED) {
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fprintf(stderr, "[Client %d] Cannot send binary data: not connected\n", ctx->index);
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return;
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}
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uv_buf_t buf = uv_buf_init((char*)data, data_size);
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uv_write_t* write_req = (uv_write_t*)malloc(sizeof(uv_write_t));
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if (!write_req) {
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fprintf(stderr, "[Client %d] Failed to allocate write request\n", ctx->index);
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return;
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}
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write_req->data = NULL; // 不需要额外数据，因为data已经传入
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fprintf(stdout, "[Client %d] Sending initial %zu bytes data\n", ctx->index, data_size);
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int ret = uv_write(write_req, (uv_stream_t*)&ctx->client, &buf, 1, on_write);
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if (ret < 0) {
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fprintf(stderr, "[Client %d] uv_write failed: %s\n", ctx->index, uv_strerror(ret));
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free(write_req);
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}
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// 注意：这里不需要释放data，因为data是由调用者管理的
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}
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/* 连接关闭回调 */
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void on_close(uv_handle_t* handle) {
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client_context_t* ctx = (client_context_t*)handle->data;
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ctx->state = STATE_DISCONNECTED;
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fprintf(stdout, "[Client %d] Connection closed\n", ctx->index);
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// 停止数据读写定时器和重连定时器
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uv_timer_stop(&ctx->timer);
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uv_timer_stop(&ctx->reconnect_timer);
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// 取消读操作（如果有的话）
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uv_read_stop((uv_stream_t*)&ctx->client);
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// 指数退避算法
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int delay = BASE_RECONNECT_DELAY * pow(2, ctx->reconnect_attempts);
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delay = delay > MAX_RECONNECT_DELAY ? MAX_RECONNECT_DELAY : delay;
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fprintf(stdout, "[Client %d] Will reconnect after %dms (attempt %d/%d)\n",
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ctx->index, delay, ctx->reconnect_attempts + 1, MAX_RECONNECT_ATTEMPTS);
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uv_timer_start(&ctx->reconnect_timer, (uv_timer_cb)try_reconnect, delay, 0);
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ctx->reconnect_attempts++;
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}
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/* 尝试重连函数 */
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void try_reconnect(uv_timer_t* timer) {
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client_context_t* ctx = (client_context_t*)timer->data;
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if (ctx->state != STATE_DISCONNECTED) {
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fprintf(stdout, "[Client %d] Reconnect skipped: Invalid state\n", ctx->index);
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return;
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}
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fprintf(stdout, "[Client %d] Attempting to reconnect...\n", ctx->index);
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if (ctx->reconnect_attempts >= MAX_RECONNECT_ATTEMPTS) {
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fprintf(stderr, "[Client %d] Max reconnect attempts reached\n", ctx->index);
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return;
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}
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// 重新初始化TCP句柄(重要!)
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uv_tcp_init(ctx->loop, &ctx->client);
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ctx->client.data = ctx;
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ctx->state = STATE_CONNECTING;
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struct sockaddr_in addr;
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uv_ip4_addr(SERVER_IP, SERVER_PORT, &addr);
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uv_connect_t* req = (uv_connect_t*)malloc(sizeof(uv_connect_t));
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req->data = ctx;
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int ret = uv_tcp_connect(req, &ctx->client, (const struct sockaddr*)&addr, on_connect);
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if (ret < 0) {
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fprintf(stderr, "[Client %d] Connect error: %s\n", ctx->index, uv_strerror(ret));
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ctx->state = STATE_DISCONNECTED;
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free(req);
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uv_close((uv_handle_t*)&ctx->client, on_close);
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}
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}
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/* 连接建立回调 */
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void on_connect(uv_connect_t* req, int status) {
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client_context_t* ctx = (client_context_t*)req->data;
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if (ctx->state != STATE_CONNECTING) {
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fprintf(stdout, "[Client %d] Connection callback with invalid state\n", ctx->index);
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free(req);
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return;
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}
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if (status < 0) {
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fprintf(stderr, "[Client %d] Connect failed: %s\n", ctx->index, uv_strerror(status));
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ctx->state = STATE_DISCONNECTED;
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free(req);
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uv_close((uv_handle_t*)&ctx->client, on_close);
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return;
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}
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else {
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ctx->state = STATE_CONNECTED;
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ctx->reconnect_attempts = 0;
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fprintf(stdout, "[Client %d] Connection established\n", ctx->index);
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// 启动数据收发
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uv_read_start((uv_stream_t*)&ctx->client, alloc_buffer, on_read);
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//send_initial_data(ctx);
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// 启动定时器
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uv_timer_start(&ctx->timer, on_timer, 6000, 6000);
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}
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free(req);
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}
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/* 客户端线程函数 */
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void* run_client(void* arg) {
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int index = *(int*)arg;
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free(arg);
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// 初始化事件循环
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uv_loop_t* loop = uv_loop_new();
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client_context_t* ctx = (client_context_t*)malloc(sizeof(client_context_t));
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memset(ctx, 0, sizeof(client_context_t));
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// 初始化上下文
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ctx->loop = loop;
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ctx->index = index;
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ctx->state = STATE_DISCONNECTED;
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ctx->reconnect_attempts = 0;
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// 初始化libuv句柄
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uv_tcp_init(loop, &ctx->client);
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uv_timer_init(loop, &ctx->timer);
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uv_timer_init(loop, &ctx->reconnect_timer);
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// 设置关联数据
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ctx->client.data = ctx;
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ctx->timer.data = ctx;
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ctx->reconnect_timer.data = ctx;
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// 首次连接尝试
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try_reconnect(&ctx->reconnect_timer);
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// 运行事件循环
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uv_run(loop, UV_RUN_DEFAULT);
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// 资源清理
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uv_loop_close(loop);
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free(loop);
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free(ctx);
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return NULL;
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}
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/* 主函数 */
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int main() {
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pthread_t threads[CONNECTIONS];
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// 创建客户端线程
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for (int i = 0; i < CONNECTIONS; i++) {
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int* index = (int*)malloc(sizeof(int));
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*index = i;
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if (pthread_create(&threads[i], NULL, run_client, index) != 0) {
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fprintf(stderr, "Failed to create thread %d\n", i);
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free(index);
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}
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}
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printf("Started %d client connections\n", CONNECTIONS);
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while (1) {
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printf("sleep 1\n");
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sleep(10);
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}
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// 等待所有线程结束
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for (int i = 0; i < CONNECTIONS; i++) {
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pthread_join(threads[i], NULL);
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}
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return 0;
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}
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