public async Task mqttClientConnectAsync()
{
QMLog qMLog = new QMLog();
var options = new MqttClientOptions
{
ClientId = ClientId,
Credentials = new MqttClientCredentials
{
Username = Username,
Password = Password
},
ChannelOptions = new MqttClientTcpOptions
{
Server = MqttServer,
Port = MqttPort
}
};
qMLog.WriteLogToFile("创建", JsonConvert.SerializeObject(options), 0);
// qMLog.WriteLogToFile("MqttClientConnectAsync", JsonConvert.SerializeObject(options),0);
try
{
await mqttClient.ConnectAsync(options);
}
catch (Exception e)
{
qMLog.WriteLogToFile("连接", e.ToString(), 0);
}
}
/// <summary>
/// 删除文件记录及物理文件
/// </summary>
/// <param name="filepath"></param>
/// <param name="dbContext"></param>
/// <returns></returns>
public static async Task <bool> DelFile(string Code, ContextString dbContext)
{
bool _Result = false;
try
{
var file = await dbContext.AssetFiles.Where(i => i.Code == Code).AsNoTracking().FirstOrDefaultAsync();
var path = Method._hostingEnvironment.WebRootPath + file.FilePath;
DirectoryInfo info = new DirectoryInfo(path);
Directory.Delete(info.Parent.FullName, true);
dbContext.AssetFiles.Remove(file);
if (await dbContext.SaveChangesAsync() > 0)
{
_Result = true;
}
}
catch (Exception e)
{
QMLog qm = new QMLog();
qm.WriteLogToFile("删除文件出错", e.ToString());
}
return(_Result);
}
/// <summary>
/// 获取用户IP
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
public static string GetUserIp(HttpContext context)
{
var ip = context.Request.Headers["X-Forwarded-For"].FirstOrDefault();
// var ip = context.Request.Headers["X-Original-For"].FirstOrDefault();
QMLog qm = new QMLog();
qm.WriteLogToFile("", ip);
qm.WriteLogToFile("", context.Connection.RemoteIpAddress.ToString());
if (string.IsNullOrEmpty(ip))
{
ip = context.Connection.RemoteIpAddress.ToString();
}
return(ip);
}
public async static Task <bool> ServerSubIOT()
{
DbContextOptions <ContextString> options = new DbContextOptions <ContextString>();
ContextString dbContext = new ContextString(options);
var serveriot = dbContext.ServerIOT.FirstOrDefault();
ServerMqttClient mqttClient = new ServerMqttClient(Method.BaiduIOT, 1883, serveriot.ServerMac, serveriot.Name, serveriot.Key);
mqttClient.InitAsync();
mqttClient.Sub();
var isStop = false;
if (serveriot != null)
{
Thread thread = new Thread(new ThreadStart(() => {
while (!isStop)
{
Thread.Sleep(120000);
try
{
var jsonstr = "{\"reported\": " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "}";
//await mqttClient.PublishAsync(serveriot.ServerMac, jsonstr);
mqttClient.PublishAsync(serveriot.ServerMac, jsonstr);
}
catch (Exception ex)
{
QMLog qMLog = new QMLog();
qMLog.WriteLogToFile("", ex.ToString());
}
finally
{
Thread.Sleep(10000);
}
}
}));
thread.IsBackground = true;
thread.Start();
}
return(true);
}
/// <summary>
/// 更新服务器状态
/// </summary>
public static void UpdateDevState()
{
DateTime dt = DateTime.Now;
try
{
QMLog qm = new QMLog();
qm.WriteLogToFile("", "Hangfire定时器执行");
DbContextOptions <ContextString> options = new DbContextOptions <ContextString>();
ContextString dbContext = new ContextString(options);
var list = dbContext.Device.ToList();
foreach (var dev in list)
{
var de = Method.DeviceCommandList.Where(i => i.Code == dev.Code).FirstOrDefault();
if (de == null)
{
dev.DeviceOnline = false;
dev.FrontOnline = false;
}
else
{
if (de.DevBreathTime >= dt.AddMinutes(-1))
{
dev.DeviceOnline = true;
}
else
{
dev.DeviceOnline = false;
}
if (de.AppBreathTime >= dt.AddMinutes(-1))
{
dev.FrontOnline = true;
}
else
{
dev.FrontOnline = false;
}
}
}
dbContext.Device.UpdateRange(list);
dbContext.SaveChanges();
}
catch (Exception e)
{
QMLog qm = new QMLog();
qm.WriteLogToFile("", e.ToString());
}
}
public async static Task <bool> ServerPublishIOT(ServerMqttClient mqttClient, ServerIOT serveriot)
{
var _r = true;
try
{
var jsonstr = "{\"reported\": " + DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + "}";
await mqttClient.PublishAsync(serveriot.ServerMac, jsonstr);
}
catch (Exception ex)
{
QMLog qMLog = new QMLog();
qMLog.WriteLogToFile("", "发送心跳包失败" + ex.ToString());
_r = false;
}
return(_r);
}
public async void InitAsync()
{
QMLog qMLog = new QMLog();
if (mqttClient == null)
{
qMLog.WriteLogToFile("创建", "调用初始化", 0);
mqttClient = new MqttFactory().CreateMqttClient();
if (!mqttClient.IsConnected)
{
await mqttClientConnectAsync();
}
mqttClient.Connected += MqttClient_Connected;
mqttClient.Disconnected += MqttClient_Disconnected;
// Sub();
}
}
/// <summary>
/// 接受消息
/// </summary>
/// <param name="socket"></param>
/// <param name="ct"></param>
/// <returns></returns>
private static async Task <string> ReceiveStringAsync(System.Net.WebSockets.WebSocket socket, CancellationToken ct = default(CancellationToken))
{
try
{
var buffer = new ArraySegment <byte>(new byte[1024]);
using (var ms = new MemoryStream())
{
WebSocketReceiveResult result;
do
{
ct.ThrowIfCancellationRequested();
result = await socket.ReceiveAsync(buffer, ct);
ms.Write(buffer.Array, buffer.Offset, result.Count);
}while (!result.EndOfMessage);
ms.Seek(0, SeekOrigin.Begin);
if (result.MessageType != WebSocketMessageType.Text)
{
return(null);
}
using (var reader = new StreamReader(ms, Encoding.UTF8))
{
return(await reader.ReadToEndAsync());
}
}
}
catch (Exception)
{
QMLog qm = new QMLog();
qm.WriteLogToFile("", "WebSocket断开");
return(null);
}
}
/// <summary>
/// 获取文件MD5 哈希码
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public static string GetMD5HashFromFile(string fileName)
{
try
{
FileStream file = new FileStream(fileName, FileMode.Open);
System.Security.Cryptography.MD5 md5 = new System.Security.Cryptography.MD5CryptoServiceProvider();
byte[] retVal = md5.ComputeHash(file);
file.Close();
StringBuilder sb = new StringBuilder();
for (int i = 0; i < retVal.Length; i++)
{
sb.Append(retVal[i].ToString("x2"));
}
return(sb.ToString());
}
catch (Exception ex)
{
QMLog log = new QMLog();
log.WriteLogToFile("GetMD5HashFromFile() fail, error:", ex.Message);
return("");
}
}
/// <summary>
/// 下载一个远程文件（http方式）
/// </summary>
/// <param name="apppath">文件路径</param>
/// <param name="filename">文件名称</param>
/// <param name="dbContext">数据库连接字段</param>
/// <returns></returns>
public static async Task <long> DownloadFile(string apppath, ContextString dbContext)
{
QMLog qm = new QMLog();
long _Result = -1;
try
{
var GUID = Guid.NewGuid();
string filename = apppath.Split('/').Last();
var client = new HttpClient
{
BaseAddress = new Uri(apppath)
};
var response = await client.GetAsync("");
var stream = await response.Content.ReadAsStreamAsync();
// var head = response.Headers;
//声明字符数据，将获取到的流信息读到字符数组中
byte[] byteArray = new byte[stream.Length];
int readCount = 0; // 已经成功读取的字节的个数
while (readCount < stream.Length)
{
readCount += stream.Read(byteArray, readCount, (int)stream.Length - readCount);
}
AssetFile assetfile = new AssetFile();
//文件名
long filesize = stream.Length;
//文件类型
var ext = filename.Split('.').Last();
FileTypeJudgment ftj = new FileTypeJudgment()
{
TypeTarget = new TypeImg()
};
assetfile.FileType = "未知";
if (ftj.Judge(ext))
{
assetfile.FileType = "图片";
}
ftj.TypeTarget = new TypeVideo();
if (ftj.Judge(ext))
{
assetfile.FileType = "视频";
}
ftj.TypeTarget = new TypeApp();
if (ftj.Judge(ext))
{
assetfile.FileType = "应用";
}
//文件保存路径
var _FolderPath = @"\Files" + @"\" + GUID;
string path = Method._hostingEnvironment.WebRootPath + _FolderPath;
if (Directory.Exists(path) == false)//如果不存在就创建file文件夹
{
Directory.CreateDirectory(path);
}
//文件全路径
var filepath = Method._hostingEnvironment.WebRootPath + _FolderPath + @"\" + filename;
using (FileStream fs = System.IO.File.Create(filepath))
{
fs.Write(byteArray, 0, (int)stream.Length);
fs.Flush();
fs.Dispose();
}
//添加文件到数据库
assetfile.AddTime = DateTime.Now;
assetfile.FileExtName = ext;
assetfile.Code = GUID.ToString();
assetfile.FileHash = "";
assetfile.FileName = filename.Split('.').First();
assetfile.FilePath = @"\Files" + @"\" + GUID.ToString() + @"\" + filename;
assetfile.FileSize = filesize;
dbContext.AssetFiles.Add(assetfile);
if (dbContext.SaveChanges() > 0)
{
_Result = assetfile.ID;
}
else
{
qm.WriteLogToFile(filename, "添加文件到数据库失败");
}
}
catch (Exception e)
{
qm.WriteLogToFile("", e.ToString());
}
return(_Result);
}
public async Task Invoke(HttpContext context)
{
//判断是否是WebSockets请求
if (!context.WebSockets.IsWebSocketRequest)
{
await _next.Invoke(context);
return;
}
//线程标志
CancellationToken ct = context.RequestAborted;
//当前连接
var currentSocket = await context.WebSockets.AcceptWebSocketAsync();
QMLog qMLog = new QMLog();
qMLog.WriteLogToFile("socketId", context.Request.Query["Code"]);
var socketId = context.Request.Query["Code"];
if (string.IsNullOrEmpty(socketId))
{
return;
}
//获取客户端IP
// var remoteIpAddress = context.Request.HttpContext.Connection.RemoteIpAddress;
//将客户端IP作为标识符
// string socketId = remoteIpAddress.ToString();
//var ip = context.Request.Headers["X_REAL_IP"].FirstOrDefault();
//if (string.IsNullOrEmpty(ip))
//{
// ip = context.Connection.RemoteIpAddress.ToString();
//}
//将客户端IP作为标识符
//string socketId = ip;
//判断是否为已有连接，不是的话创建
if (!_sockets.ContainsKey(socketId))
{
_sockets.TryAdd(socketId, currentSocket);
}
else
{
WebSocket socket;
_sockets.TryGetValue(socketId, out socket);
if (_sockets.TryRemove(socketId, out socket))
{
qMLog.WriteLogToFile("添加socketId", context.Request.Query["Code"]);
_sockets.TryAdd(socketId, currentSocket);
}
}
while (true)
{
if (ct.IsCancellationRequested)
{
break;
}
string response = await ReceiveStringAsync(currentSocket, ct);
if (response == null)
{
break;
}
//MsgTemplate msg = JsonConvert.DeserializeObject<MsgTemplate>(response);
if (string.IsNullOrEmpty(response))
{
if (currentSocket.State != WebSocketState.Open)
{
break;
}
continue;
}
/*
* foreach (var socket in _sockets)
* {
* if (socket.Value.State != WebSocketState.Open)
* {
* continue;
* }
* // 控制只有接收者才能收到消息
* if (socket.Key == msg.ReceiverID || socket.Key == socketId)
* {
* await SendStringAsync(socket.Value, JsonConvert.SerializeObject(msg), ct);
* }
* }
*/
}
//_sockets.TryRemove(socketId, out dummy);
await currentSocket.CloseAsync(WebSocketCloseStatus.NormalClosure, "Closing", ct);
currentSocket.Dispose();
}
/// <summary>
/// Http方式下载文件
/// </summary>
/// <param name="url">http地址</param>
/// <param name="localfile">本地文件</param>
/// <returns></returns>
public static bool Download(string url, string localfile)
{
bool flag = false;
long startPosition = 0; // 上次下载的文件起始位置
FileStream writeStream; // 写入本地文件流对象
long remoteFileLength = GetHttpLength(url); // 取得远程文件长度
System.Console.WriteLine("remoteFileLength=" + remoteFileLength);
if (remoteFileLength == 745)
{
System.Console.WriteLine("远程文件不存在.");
return(false);
}
// 判断要下载的文件夹是否存在
if (File.Exists(localfile))
{
writeStream = File.OpenWrite(localfile); // 存在则打开要下载的文件
startPosition = writeStream.Length; // 获取已经下载的长度
if (startPosition >= remoteFileLength)
{
System.Console.WriteLine("本地文件长度" + startPosition + "已经大于等于远程文件长度" + remoteFileLength);
writeStream.Close();
return(false);
}
else
{
writeStream.Seek(startPosition, SeekOrigin.Current); // 本地文件写入位置定位
}
}
else
{
QMLog qMLog = new QMLog();
var path = localfile.Substring(0, localfile.LastIndexOf("\\"));
if (Directory.Exists(path) == false)//如果不存在就创建file文件夹
{
Directory.CreateDirectory(path);
}
writeStream = new FileStream(localfile, FileMode.Create);// 文件不保存创建一个文件
startPosition = 0;
}
try
{
HttpWebRequest myRequest = (HttpWebRequest)HttpWebRequest.Create(url);// 打开网络连接
if (startPosition > 0)
{
myRequest.AddRange((int)startPosition);// 设置Range值,与上面的writeStream.Seek用意相同,是为了定义远程文件读取位置
}
Stream readStream = myRequest.GetResponse().GetResponseStream();// 向服务器请求,获得服务器的回应数据流
byte[] btArray = new byte[512]; // 定义一个字节数据,用来向readStream读取内容和向writeStream写入内容
int contentSize = readStream.Read(btArray, 0, btArray.Length); // 向远程文件读第一次
long currPostion = startPosition;
while (contentSize > 0)// 如果读取长度大于零则继续读
{
currPostion += contentSize;
int percent = (int)(currPostion * 100 / remoteFileLength);
System.Console.WriteLine("percent=" + percent + "%");
writeStream.Write(btArray, 0, contentSize); // 写入本地文件
contentSize = readStream.Read(btArray, 0, btArray.Length); // 继续向远程文件读取
}
//关闭流
writeStream.Close();
readStream.Close();
flag = true; //返回true下载成功
}
catch (Exception)
{
writeStream.Close();
flag = false; //返回false下载失败
}
return(flag);
}
public static async Task <bool> DownTask()
{
QMLog qMLog = new QMLog();
var _r = false;
DbContextOptions <ContextString> options = new DbContextOptions <ContextString>();
ContextString dbContext = new ContextString(options);
var list = await dbContext.FileToBeDown.Where(i => i.StartNum < 10).OrderBy(o => o.StartNum).ToListAsync();
if (list.Count() <= 0)
{
//文件已下载完毕
_r = true;
return(_r);
}
else
{
//取第一个任务
var task = list.FirstOrDefault();
var taskfile = await dbContext.AssetFiles.Where(i => i.Code == task.FileCode).FirstOrDefaultAsync();
//文件无效
if (taskfile == null)
{
//删除记录
dbContext.FileToBeDown.Remove(task);
await dbContext.SaveChangesAsync();
}
else
{
//下载文件
var suc = Download(Method.OSSServer + taskfile.FilePath, Method._hostingEnvironment.WebRootPath + taskfile.FilePath);
if (suc)
{
//下载成功 移除任务
dbContext.FileToBeDown.Remove(task);
await dbContext.SaveChangesAsync();
}
else
{
//下载失败
task.StartNum += 1;
task.UpdateTime = DateTime.Now;
dbContext.FileToBeDown.Update(task);
await dbContext.SaveChangesAsync();
}
}
// 回调
_r = await DownTask();
//返回
return(_r);
}
}
