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目前只支持HTTP协议

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
using System.Threading;

namespace ThunderSDK
{
	class Program
	{
		enum enumTaskStatus
		{
			enumTaskStatus_Connect = 0,                 // 已经建立连接
			enumTaskStatus_Download = 2,                // 开始下载 
			enumTaskStatus_Pause = 10,                  // 暂停
			enumTaskStatus_Success = 11,                // 成功下载
			enumTaskStatus_Fail = 12,                   // 下载失败
		};
		public const int XL_SUCCESS = 0;
		public const int XL_ERROR_FAIL = 0x10000000;

		// 尚未进行初始化
		public const int XL_ERROR_UNINITAILIZE = XL_ERROR_FAIL + 1;

		// 不支持的协议,目前只支持HTTP
		public const int XL_ERROR_UNSPORTED_PROTOCOL = XL_ERROR_FAIL + 2;

		// 初始化托盘图标失败
		public const int XL_ERROR_INIT_TASK_TRAY_ICON_FAIL = XL_ERROR_FAIL + 3;

		// 添加托盘图标失败
		public const int XL_ERROR_ADD_TASK_TRAY_ICON_FAIL = XL_ERROR_FAIL + 4;

		// 指针为空
		public const int XL_ERROR_POINTER_IS_NULL = XL_ERROR_FAIL + 5;

		// 字符串是空串
		public const int XL_ERROR_STRING_IS_EMPTY = XL_ERROR_FAIL + 6;

		// 传入的路径没有包含文件名
		public const int XL_ERROR_PATH_DONT_INCLUDE_FILENAME = XL_ERROR_FAIL + 7;

		// 创建目录失败
		public const int XL_ERROR_CREATE_DIRECTORY_FAIL = XL_ERROR_FAIL + 8;

		// 内存不足
		public const int XL_ERROR_MEMORY_ISNT_ENOUGH = XL_ERROR_FAIL + 9;

		// 参数不合法
		public const int XL_ERROR_INVALID_ARG = XL_ERROR_FAIL + 10;

		// 任务不存在
		public const int XL_ERROR_TASK_DONT_EXIST = XL_ERROR_FAIL + 11;

		// 文件名不合法
		public const int XL_ERROR_FILE_NAME_INVALID = XL_ERROR_FAIL + 12;

		// 没有实现
		public const int XL_ERROR_NOTIMPL = XL_ERROR_FAIL + 13;

		// 已经创建的任务数达到最大任务数,无法继续创建任务
		public const int XL_ERROR_TASKNUM_EXCEED_MAXNUM = XL_ERROR_FAIL + 14;

		// 任务类型未知
		public const int XL_ERROR_INVALID_TASK_TYPE = XL_ERROR_FAIL + 15;

		// 文件已经存在
		public const int XL_ERROR_FILE_ALREADY_EXIST = XL_ERROR_FAIL + 16;

		// 文件不存在
		public const int XL_ERROR_FILE_DONT_EXIST = XL_ERROR_FAIL + 17;

		// 读取cfg文件失败
		public const int XL_ERROR_READ_CFG_FILE_FAIL = XL_ERROR_FAIL + 18;

		// 写入cfg文件失败
		public const int XL_ERROR_WRITE_CFG_FILE_FAIL = XL_ERROR_FAIL + 19;

		// 无法继续任务,可能是不支持断点续传,也有可能是任务已经失败
		// 通过查询任务状态,确定错误原因。
		public const int XL_ERROR_CANNOT_CONTINUE_TASK = XL_ERROR_FAIL + 20;

		// 无法暂停任务,可能是不支持断点续传,也有可能是任务已经失败
		// 通过查询任务状态,确定错误原因。
		public const int XL_ERROR_CANNOT_PAUSE_TASK = XL_ERROR_FAIL + 21;

		// 缓冲区太小
		public const int XL_ERROR_BUFFER_TOO_SMALL = XL_ERROR_FAIL + 22;

		// 调用XLInitDownloadEngine的线程,在调用XLUninitDownloadEngine之前已经结束。
		// 初始化下载引擎线程,在调用XLUninitDownloadEngine之前,必须保持执行状态。
		public const int XL_ERROR_INIT_THREAD_EXIT_TOO_EARLY = XL_ERROR_FAIL + 23;

		[DllImport("XLDownload.dll", EntryPoint = "XLInitDownloadEngine")]
		public static extern bool XLInitDownloadEngine();
		[DllImport("XLDownload.dll", EntryPoint = "XLURLDownloadToFile", CharSet = CharSet.Unicode)]
		public static extern int XLURLDownloadToFile(string pszFileName, string pszUrl, string pszRefUrl, ref  Int32 lTaskId);
		[DllImport("XLDownload.dll")]
		public static extern int XLQueryTaskInfo(int lTaskId, ref int plStatus, ref double pullFileSize, ref double pullRecvSize);
		[DllImport("XLDownload.dll")]
		public static extern int XLPauseTask(int lTaskId, ref int lNewTaskId);
		[DllImport("XLDownload.dll")]
		public static extern int XLContinueTask(int lTaskId);
		[DllImport("XLDownload.dll")]
		public static extern int XLContinueTaskFromTdFile(string pszTdFileFullPath, ref int lTaskId);
		[DllImport("XLDownload.dll")]
		public static extern void XLStopTask(int lTaskId);
		[DllImport("XLDownload.dll")]
		public static extern bool XLUninitDownloadEngine();
		[DllImport("XLDownload.dll")]
		public static extern int XLGetErrorMsg(int dwErrorId, string pszBuffer, ref int dwSize);

		static void Main(string[] args)
		{
			if (!XLInitDownloadEngine())
			{
				Console.WriteLine("下载引擎初始化错误");
				return;
			}

			Int32 lTaskId = 0;
			string filename = "d://xx.exe";
			string url = "http://xmp.down.sandai/kankan/XMPSetup_3.8.1.485-www.exe";
			string refurl = "http://xmp.down.sandai";
			int dwRet = XLURLDownloadToFile(filename, url, refurl, ref  lTaskId);
			if (XL_SUCCESS != dwRet)
			{
				XLUninitDownloadEngine();
				Console.WriteLine("添加新任务失败");
				return;
			}
			Console.WriteLine("开始下载");
			do
			{
				Thread.Sleep(1000);
				double pullFileSize = 0;
				double pullRecvSize = 0;
				int lStatus = -1;
				dwRet = XLQueryTaskInfo(lTaskId, ref lStatus, ref pullFileSize, ref  pullRecvSize);
				if (XL_SUCCESS == dwRet)
				{
					if ((int)enumTaskStatus.enumTaskStatus_Success == lStatus)
					{
						Console.WriteLine("下载完成");
						break;
					}
					if (0 != pullFileSize)
					{
						double douProcess = (double)pullRecvSize / (double)pullFileSize;
						douProcess *= 100.0;
						Console.WriteLine("下载进度:{0}%", douProcess);
					}
					else
					{
						Console.WriteLine("文件长度为0");
					}

				}
			} while (XL_SUCCESS == dwRet);
			XLStopTask(lTaskId);
			XLUninitDownloadEngine();
		}
	}
}



本文标签: 迅雷实例