/// <summary>
/// Api行为上下文
/// </summary>
/// <param name="requestContext">请求上下文</param>
/// <param name="action">Api行为</param>
/// <param name="context">上下文</param>
public ActionContext(RequestContext requestContext, HttpAction action, IContenxt context)
: base(requestContext.Request, requestContext.Response)
{
this.Action = action;
this.Session = context.Session;
this.AllSessions = context.AllSessions;
}
/// <summary>
/// 会话断开连接时
/// </summary>
/// <param name="sender"></param>
/// <param name="context"></param>
static void Events_OnDisconnected(object sender, IContenxt context)
{
if (context.Session.IsProtocol("websocket") != true)
{
return;
}
var name = context.Session.Tag.TryGet<string>("name");
if (name == null)
{
return;
}
var webSocketSessions = context
.AllSessions
.FilterWrappers<JsonWebSocketSession>();
var members = webSocketSessions
.Select(item => item.Tag.TryGet<string>("name"))
.Where(item => item != null)
.ToArray();
// 推送成员下线通知
foreach (var item in webSocketSessions)
{
item.InvokeApi("OnMemberChange", 0, name, members);
}
}
/// <summary>
/// 触发OnDisconnected
/// </summary>
/// <param name="sender"></param>
/// <param name="context"></param>
internal void RaiseDisconnected(object sender, IContenxt context)
{
var @event = this.OnDisconnected;
if (@event != null)
{
@event.Invoke(sender, context);
}
}
/// <summary>
/// 执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
Task IMiddleware.Invoke(IContenxt context)
{
if (context.Session.IsProtocol("http") == false)
{
return this.Next.Invoke(context);
}
return this.OnHttpRequest(context);
}
/// <summary>
/// 回复握手，请求体已被http中间件解析
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private Task OnWebSocketHandshake(IContenxt context)
{
const string seckey = "Sec-WebSocket-Key";
var secValue = context.Session.Tag.TryGet<string>(seckey);
if (string.IsNullOrEmpty(secValue) == true)
{
return this.Next.Invoke(context);
}
context.Session.Tag.Remove(seckey);
return this.ResponseHandshake(context, secValue);
}
/// <summary>
/// 执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
Task IMiddleware.Invoke(IContenxt context)
{
if (context.Session.Protocol != null || context.Buffer.Length != 23)
{
return this.Next.Invoke(context);
}
context.Buffer.Position = 0;
var request = context.Buffer.ReadString(Encoding.ASCII);
if (string.Equals(request, "<policy-file-request/>\0", StringComparison.OrdinalIgnoreCase))
{
return new Task(() => this.SendPolicyXML(context));
}
return this.Next.Invoke(context);
}
/// <summary>
/// 发送策略文件
/// </summary>
/// <param name="context">上下文</param>
private void SendPolicyXML(IContenxt context)
{
try
{
var policyXml = this.GeneratePolicyXml();
var bytes = Encoding.UTF8.GetBytes(policyXml.ToCharArray());
context.Session.Send(new ByteRange(bytes));
}
catch (Exception)
{
}
finally
{
context.Session.Close();
}
}
/// <summary>
/// 收到http请求
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private Task OnHttpRequest(IContenxt context)
{
try
{
var request = default(HttpRequest);
if (HttpRequest.Parse(context, out request) == false)
{
return this.Next.Invoke(context);
}
if (context.Session.Protocol == null)
{
context.Session.SetProtocolWrapper("http", null);
}
if (request == null)
{
return new Task(() => { });
}
if (request.IsWebsocketRequest() == true)
{
const string secKey = "Sec-WebSocket-Key";
context.Session.Tag.Set(secKey, request.Headers[secKey]);
return this.Next.Invoke(context);
}
return new Task(() =>
{
var response = new HttpResponse(context.Session);
var requestContext = new RequestContext(request, response);
this.OnHttpRequest(context, requestContext);
});
}
catch (HttpException ex)
{
return new Task(() => this.OnException(context.Session, ex));
}
catch (Exception ex)
{
return new Task(() => this.OnException(context.Session, new HttpException(500, ex.Message)));
}
}
/// <summary>
/// 执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
Task IMiddleware.Invoke(IContenxt context)
{
var isWebSocket = context.Session.IsProtocol("websocket");
if (isWebSocket == true)
{
return this.OnWebSocketFrameRequest(context);
}
if (isWebSocket == null)
{
return this.OnWebSocketHandshakeRequest(context);
}
if (context.Session.IsProtocol("http") == true)
{
return this.OnWebSocketHandshake(context);
}
return this.Next.Invoke(context);
}
/// <summary>
/// 收到WebSocket的握手请求
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private Task OnWebSocketHandshakeRequest(IContenxt context)
{
try
{
var httpRequest = default(HttpRequest);
if (HttpRequest.Parse(context, out httpRequest) == false)
{
return this.Next.Invoke(context);
}
if (httpRequest == null || httpRequest.IsWebsocketRequest() == false)
{
return this.Next.Invoke(context);
}
const string seckey = "Sec-WebSocket-Key";
var secValue = httpRequest.Headers[seckey];
return this.ResponseHandshake(context, secValue);
}
catch (Exception)
{
return this.Next.Invoke(context);
}
}
/// <summary>
/// 收到http请求
/// </summary>
/// <param name="context">上下文</param>
/// <param name="requestContext">请求上下文</param>
protected override void OnHttpRequest(IContenxt context, NetworkSocket.Http.RequestContext requestContext)
{
var request = requestContext.Request;
var response = requestContext.Response;
if (AppConfig.PathPattern.IsMatch(request.Path) == false)
{
var message = "路径不匹配，数据未转发 ..";
response.Write(message);
Console.WriteLine(message);
}
else
{
var fastSessions = context.AllSessions.FilterWrappers<FastSession>().ToArray();
foreach (var session in fastSessions)
{
this.PushRequest(session, request);
}
var message = string.Format("数据已转发到{0}到客户端 ..", fastSessions.Length);
response.Write(message);
Console.WriteLine(message);
}
}
/// <summary>
/// 中间件业务执行
/// </summary>
/// <param name="context"></param>
/// <returns></returns>
protected override async Task Invoke(IContenxt context)
{
await Task.CompletedTask;
}
/// <summary> /// 收到Http请求时触发 /// </summary> /// <param name="context">上下文</param> /// <param name="requestContext">请求上下文对象</param> protected abstract void OnHttpRequest(IContenxt context, RequestContext requestContext);
/// <summary>
/// 收到到数据帧请求
/// </summary>
/// <param name="context">会话对象</param>
/// <param name="frameRequest">数据帧</param>
private void OnWebSocketRequest(IContenxt context, FrameRequest frameRequest)
{
switch (frameRequest.Frame)
{
case FrameCodes.Close:
var reason = StatusCodes.NormalClosure;
if (frameRequest.Content.Length > 1)
{
var status = ByteConverter.ToUInt16(frameRequest.Content, 0, Endians.Big);
reason = (StatusCodes)status;
}
this.OnClose(context, reason);
context.Session.Close();
break;
case FrameCodes.Binary:
this.OnBinary(context, frameRequest.Content);
break;
case FrameCodes.Text:
var content = Encoding.UTF8.GetString(frameRequest.Content);
this.OnText(context, content);
break;
case FrameCodes.Ping:
try
{
var session = context.Session.Wrapper as WebSocketSession;
session.Send(new FrameResponse(FrameCodes.Pong, frameRequest.Content));
}
catch (Exception)
{
}
finally
{
this.OnPing(context, frameRequest.Content);
}
break;
case FrameCodes.Pong:
this.OnPong(context, frameRequest.Content);
break;
default:
break;
}
}
/// <summary>
/// 解析连接请求信息
/// 如果数据未完整则返回null
/// </summary>
/// <param name="context">上下文</param>
/// <param name="request">http请求</param>
/// <exception cref="HttpException"></exception>
/// <returns></returns>
public static bool Parse(IContenxt context, out HttpRequest request)
{
var headerLength = 0;
request = null;
if (Protocol.IsHttp(context.Buffer, out headerLength) == false)
{
return(false);
}
if (headerLength <= 0)
{
return(true);
}
context.Buffer.Position = 0;
var headerString = context.Buffer.ReadString(headerLength, Encoding.ASCII);
const string pattern = @"^(?<method>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" +
@"((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]*)\r\n)+" +
@"\r\n";
var match = Regex.Match(headerString, pattern, RegexOptions.IgnoreCase);
if (match.Success == false)
{
return(false);
}
var httpMethod = GetHttpMethod(match.Groups["method"].Value);
var httpHeader = HttpHeader.Parse(match.Groups["field_name"].Captures, match.Groups["field_value"].Captures);
var contentLength = httpHeader.TryGet <int>("Content-Length");
if (httpMethod == HttpMethod.POST && context.Buffer.Length - headerLength < contentLength)
{
return(true); // 数据未完整
}
request = new HttpRequest
{
LocalEndPoint = context.Session.LocalEndPoint,
RemoteEndPoint = context.Session.RemoteEndPoint,
HttpMethod = httpMethod,
Headers = httpHeader
};
var scheme = context.Session.IsSecurity ? "https" : "http";
var url = string.Format("{0}://localhost:{1}{2}", scheme, context.Session.LocalEndPoint.Port, match.Groups["path"].Value);
request.Url = new Uri(url);
request.Path = request.Url.AbsolutePath;
request.Query = HttpNameValueCollection.Parse(request.Url.Query.TrimStart('?'), false);
if (httpMethod == HttpMethod.GET)
{
request.Body = new byte[0];
request.Form = new HttpNameValueCollection();
request.Files = new HttpFile[0];
}
else
{
request.Body = context.Buffer.ReadArray(contentLength);
context.Buffer.Position = headerLength;
HttpRequest.GeneratePostFormAndFiles(request, context.Buffer);
}
context.Buffer.Clear(headerLength + contentLength);
return(true);
}
/// <summary> /// 收到Http请求时触发 /// </summary> /// <param name="context">上下文</param> /// <param name="requestContext">请求上下文对象</param> /// <returns ></returns> protected abstract Task OnHttpRequestAsync(IContenxt context, RequestContext requestContext);
/// <summary>
/// 解析生成请求帧
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private IList<FrameRequest> GenerateWebSocketRequest(IContenxt context)
{
var list = new List<FrameRequest>();
while (true)
{
var request = FrameRequest.Parse(context.Buffer);
if (request == null)
{
return list;
}
list.Add(request);
}
}
/// <summary>
/// 会话断开后触发
/// </summary>
/// <param name="sender">发生者</param>
/// <param name="context">上下文</param>
void IPlug.OnDisconnected(object sender, IContenxt context)
{
this.OnDisconnected(sender, context);
}
/// <summary>
/// 执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public Task Invoke(IContenxt context)
{
context.InputStream.Clear();
context.Session.Close();
return(TaskExtend.CompletedTask);
}
/// <summary>
/// 收到文本请求类型时触发此方法
/// </summary>
/// <param name="context">会话对象</param>
/// <param name="content">文本内容</param>
protected virtual void OnText(IContenxt context, string content)
{
}
/// <summary>
/// 回复握手请求
/// </summary>
/// <param name="context">上下文</param>
/// <param name="secValue">Sec-WebSocket-Key</param>
/// <returns></returns>
private Task ResponseHandshake(IContenxt context, string secValue)
{
return new Task(() =>
{
try
{
var wrapper = new WebSocketSession(context.Session);
var hansshakeResponse = new HandshakeResponse(secValue);
wrapper.Send(hansshakeResponse);
this.OnSetProtocolWrapper(context.Session, wrapper);
}
catch (Exception) { }
});
}
/// <summary>
/// 收到文本请求类型时触发此方法
/// </summary>
/// <param name="context">会话对象</param>
/// <param name="content">文本内容</param>
protected virtual void OnText(IContenxt context, string content)
{
}
/// <summary>
/// 收到会话的关闭信息
/// 在触发此方法后，基础服务将自动安全回收此会话对象
/// </summary>
/// <param name="context">上下文</param>
/// <param name="code">关闭码</param>
protected virtual void OnClose(IContenxt context, StatusCodes code)
{
}
/// <summary>
/// Ping后会话对象将回复Pong触发此方法
/// </summary>
/// <param name="context">上下文</param>
/// <param name="content">二进制内容</param>
protected virtual void OnPong(IContenxt context, byte[] content)
{
}
/// <summary>
/// 收到二进制类型请求时触发此方法
/// </summary>
/// <param name="context">会话对象</param>
/// <param name="content">二进制内容</param>
protected virtual void OnBinary(IContenxt context, byte[] content)
{
}
protected override void OnConnected(object sender, IContenxt context)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine($"HttpServer-> {DateTime.Now} {context.Session}连接..");
Console.ForegroundColor = ConsoleColor.Gray;
}
/// <summary>
/// 解析连接请求信息
/// </summary>
/// <param name="context">上下文</param>
/// <exception cref="HttpException"></exception>
/// <returns></returns>
public static HttpParseResult Parse(IContenxt context)
{
var headerLength = 0;
var result = new HttpParseResult();
context.StreamReader.Position = 0;
result.IsHttp = HttpRequestParser.IsHttp(context.StreamReader, out headerLength);
if (result.IsHttp == false || headerLength <= 0)
{
return(result);
}
var headerString = context.StreamReader.ReadString(Encoding.ASCII, headerLength);
const string pattern = @"^(?<method>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" +
@"((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]*)\r\n)+" +
@"\r\n";
var match = Regex.Match(headerString, pattern, RegexOptions.IgnoreCase);
result.IsHttp = match.Success;
if (result.IsHttp == false)
{
return(result);
}
var httpMethod = HttpRequestParser.CastHttpMethod(match.Groups["method"].Value);
var httpHeader = HttpHeader.Parse(match.Groups["field_name"].Captures, match.Groups["field_value"].Captures);
var contentLength = httpHeader.TryGet <int>("Content-Length");
if (httpMethod == HttpMethod.POST && context.StreamReader.Length - headerLength < contentLength)
{
return(result);// 数据未完整
}
var request = new HttpRequest
{
LocalEndPoint = context.Session.LocalEndPoint,
RemoteEndPoint = context.Session.RemoteEndPoint,
HttpMethod = httpMethod,
Headers = httpHeader
};
var scheme = context.Session.IsSecurity ? "https" : "http";
var host = httpHeader["Host"];
if (string.IsNullOrEmpty(host) == true)
{
host = context.Session.LocalEndPoint.ToString();
}
var url = string.Format("{0}://{1}{2}", scheme, host, match.Groups["path"].Value);
request.Url = new Uri(url);
request.Path = request.Url.AbsolutePath;
request.Query = HttpNameValueCollection.Parse(request.Url.Query.TrimStart('?'));
switch (httpMethod)
{
case HttpMethod.GET:
request.Body = new byte[0];
request.Form = new HttpNameValueCollection();
request.Files = new HttpFile[0];
break;
default:
request.Body = context.StreamReader.ReadArray(contentLength);
context.StreamReader.Position = headerLength;
HttpRequestParser.GeneratePostFormAndFiles(request, context.StreamReader);
break;
}
result.Request = request;
result.PackageLength = headerLength + contentLength;
return(result);
}
protected sealed override void OnConnected(object sender, IContenxt context)
{
Globle.AddDataLog("XDP", Globle.LangController.GetLang("LOG.XDPClientConnect", DateTime.Now.ToString("mm:ss"), context.Session.ToString()));
}
/// <summary>
/// 会话断开后事件
/// </summary>
protected override void OnDisconnected(object sender, IContenxt context)
{
this.ProcessOfflineNotify(context);
}
/// <summary>
/// 收到请求后触发
/// 如果关闭了会话，将停止传递给下个插件的OnRequested
/// </summary>
/// <param name="sender">发生者</param>
/// <param name="context">上下文</param>
void IPlug.OnRequested(object sender, IContenxt context)
{
this.OnRequested(sender, context);
}
/// <summary>
/// 收到会话的关闭信息
/// 在触发此方法后，基础服务将自动安全回收此会话对象
/// </summary>
/// <param name="context">上下文</param>
/// <param name="code">关闭码</param>
/// <param name="reason">备注原因</param>
protected virtual void OnClose(IContenxt context, StatusCodes code, string reason)
{
}
protected override void OnConnected(object sender, IContenxt context)
{
Console.WriteLine($"HttpServer-> {DateTime.Now} {context.Session}连接..");
}
/// <summary>
/// Ping后会话对象将回复Pong触发此方法
/// </summary>
/// <param name="context">上下文</param>
/// <param name="content">二进制内容</param>
protected virtual void OnPong(IContenxt context, byte[] content)
{
}
protected override void OnConnected(object sender, IContenxt context)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.WriteLine("{0} HttpServer->{1}连接..", DateTime.Now.ToString("HH:mm:ss.fff"), context.Session);
Console.ForegroundColor = ConsoleColor.Gray;
}
/// <summary>
/// 收到会话的关闭信息
/// 在触发此方法后，基础服务将自动安全回收此会话对象
/// </summary>
/// <param name="context">上下文</param>
/// <param name="code">关闭码</param>
protected virtual void OnClose(IContenxt context, StatusCodes code)
{
}
protected abstract Task Invoke(IContenxt context);
/// <summary>
/// 把收到的内容当作ip，并绑定到ws会话
/// </summary>
/// <param name="context">上下文</param>
/// <param name="frame">数据</param>
protected override void OnText(IContenxt context, FrameRequest frame)
{
var ipAddress = Encoding.UTF8.GetString(frame.Content);
context.Session.Tag.Set("ip", ipAddress);
}
/// <summary>
/// 会话连接成功后触发
/// 如果关闭了会话，将停止传递给下个插件的OnConnected
/// </summary>
/// <param name="sender"></param>
/// <param name="context"></param>
protected override void OnConnected(object sender, IContenxt context)
{
Console.WriteLine("{0} 上线通知：{1}", DateTime.Now, context.Session.RemoteEndPoint.ToString());
}
/// <summary>
/// 接收到文本信息时
/// </summary>
/// <param name="context">上下文</param>
/// <param name="content">内容</param>
protected sealed override void OnText(IContenxt context, string content)
{
var jsonPacket = this.TryGetJsonPacket(context, content);
if (jsonPacket == null)
{
return;
}
var session = context.Session.Wrapper as JsonWebSocketSession;
var requestContext = new RequestContext(session, jsonPacket, context.AllSessions);
if (jsonPacket.state == false)
{
this.ProcessRemoteException(requestContext);
}
else
{
this.ProcessRequest(requestContext);
}
}
/// <summary>
/// 执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public Task Invoke(IContenxt context)
{
context.Stream.Clear();
context.Session.Close();
return(null);
}
/// <summary>
/// 收到二进制类型请求时触发此方法
/// </summary>
/// <param name="context">会话对象</param>
/// <param name="frame">帧</param>
protected virtual void OnBinary(IContenxt context, FrameRequest frame)
{
}
/// <summary>
/// 尝试当作http头解析，生成请求对象
/// 如果不是http头则返回false
/// </summary>
/// <param name="context">上下文</param>
/// <param name="request">请求对象</param>
/// <param name="headerLength">请求头长度</param>
/// <param name="contentLength">请求内容长度</param>
/// <returns></returns>
private static bool TryGetRequest(IContenxt context, out HttpRequest request, out int headerLength, out int contentLength)
{
request = null;
headerLength = 0;
contentLength = 0;
var reader = context.StreamReader;
// HTTP Method
reader.Position = 0;
var methodLength = reader.IndexOf(Space);
if (methodLength < 0 || methodLength > MedthodMaxLength)
{
return(false);
}
var methodName = reader.ReadString(Encoding.ASCII, methodLength);
if (MethodNames.Contains(methodName) == false)
{
return(false);
}
var httpMethod = (HttpMethod)Enum.Parse(typeof(HttpMethod), methodName, true);
// HTTP Path
reader.Position += 1;
var pathLength = reader.IndexOf(Space);
if (pathLength < 0)
{
return(false);
}
var path = reader.ReadString(Encoding.ASCII, pathLength);
// HTTP Version
reader.Position += 1;
if (reader.StartWith(HttpVersion11) == false)
{
return(false);
}
reader.Position += HttpVersion11.Length;
if (reader.StartWith(CRLF) == false)
{
return(false);
}
// HTTP Second line
reader.Position += CRLF.Length;
var endIndex = reader.IndexOf(DoubleCRLF);
if (endIndex < 0)
{
return(false);
}
var httpHeader = new HttpHeader();
headerLength = reader.Position + endIndex + DoubleCRLF.Length;
while (reader.Position < headerLength - CRLF.Length)
{
var keyLength = reader.IndexOf(KvSpliter);
if (keyLength <= 0)
{
break;
}
var key = reader.ReadString(Encoding.ASCII, keyLength);
reader.Position += KvSpliter.Length;
var valueLength = reader.IndexOf(CRLF);
if (valueLength < 0)
{
break;
}
var value = reader.ReadString(Encoding.ASCII, valueLength);
if (reader.StartWith(CRLF) == false)
{
break;
}
reader.Position += CRLF.Length;
httpHeader.Add(key, value);
}
if (httpMethod != HttpMethod.GET)
{
contentLength = httpHeader.TryGet <int>("Content-Length");
if (reader.Length - headerLength < contentLength)
{
return(true);// 数据未完整
}
}
request = new HttpRequest
{
LocalEndPoint = context.Session.LocalEndPoint,
RemoteEndPoint = context.Session.RemoteEndPoint,
HttpMethod = httpMethod,
Headers = httpHeader
};
var scheme = context.Session.IsSecurity ? "https" : "http";
var host = httpHeader["Host"];
if (string.IsNullOrEmpty(host) == true)
{
host = context.Session.LocalEndPoint.ToString();
}
request.Url = new Uri(string.Format("{0}://{1}{2}", scheme, host, path));
request.Path = request.Url.AbsolutePath;
request.Query = HttpNameValueCollection.Parse(request.Url.Query.TrimStart('?'));
return(true);
}
/// <summary>
/// 收到fast请求
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private Task OnFastRequest(IContenxt context)
{
var fastPacket = default(FastPacket);
if (FastPacket.Parse(context.Buffer, out fastPacket) == false)
{
return this.Next.Invoke(context);
}
if (fastPacket == null)
{
return new Task(() => { });
}
if (context.Session.Protocol == null)
{
var wrapper = new FastSession(context.Session, this);
context.Session.SetProtocolWrapper("fast", wrapper);
}
var fastSession = (FastSession)context.Session.Wrapper;
var fastPackets = this.GenerateFastPackets(context, fastPacket);
return new Task(() =>
{
foreach (var packet in fastPackets)
{
var requestContext = new RequestContext(fastSession, packet, context.AllSessions);
this.OnRecvFastPacket(requestContext);
}
});
}
/// <summary>
/// 触发执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public Task RaiseInvoke(IContenxt context)
{
return(this.middlewares.First.Value.Invoke(context));
}
/// <summary>
/// 收到Http请求时触发
/// </summary>
/// <param name="context">上下文</param>
/// <param name="requestContext">请求上下文对象</param>
protected override void OnHttpRequest(IContenxt context, RequestContext requestContext)
{
var extenstion = Path.GetExtension(requestContext.Request.Path);
if (string.IsNullOrWhiteSpace(extenstion) == false)
{
this.ProcessStaticFileRequest(extenstion, requestContext);
}
else
{
this.ProcessActionRequest(requestContext.Request.Path, context, requestContext);
}
}
/// <summary> /// 收到Http请求时触发 /// </summary> /// <param name="context">上下文</param> /// <param name="requestContext">请求上下文对象</param> protected abstract void OnHttpRequest(IContenxt context, RequestContext requestContext);
/// <summary>
/// 执行httpAction
/// </summary>
/// <param name="action">httpAction</param>
/// <param name="context">上下文</param>
/// <param name="requestContext">请求上下文</param>
private void ExecuteHttpAction(HttpAction action, IContenxt context, RequestContext requestContext)
{
var actionContext = new ActionContext(requestContext, action, context);
var controller = GetHttpController(actionContext);
if (controller != null)
{
controller.Execute(actionContext);
this.DependencyResolver.TerminateService(controller);
}
}
/// <summary>
/// 收到二进制类型请求时触发此方法
/// </summary>
/// <param name="context">会话对象</param>
/// <param name="content">二进制内容</param>
protected virtual void OnBinary(IContenxt context, byte[] content)
{
}
/// <summary>
/// 执行中间件
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
public Task Invoke(IContenxt context)
{
context.Buffer.Clear();
context.Session.Close();
return null;
}
/// <summary>
/// 尝试获取数据包
/// </summary>
/// <param name="context">上下文</param>
/// <param name="content">内容</param>
/// <returns></returns>
private JsonPacket TryGetJsonPacket(IContenxt context, string content)
{
try
{
var packet = this.JsonSerializer.Deserialize(content);
var jsonPacket = new JsonPacket
{
api = packet.api,
id = packet.id ?? 0,
state = packet.state ?? true,
fromClient = packet.fromClient ?? true,
body = packet.body
};
return jsonPacket;
}
catch (Exception ex)
{
var session = context.Session.Wrapper as JsonWebSocketSession;
var requestContext = new RequestContext(session, null, context.AllSessions);
var exceptionConext = new ExceptionContext(requestContext, ex);
this.ExecGlobalExceptionFilters(exceptionConext);
return null;
}
}
/// <summary>
/// 收到WebSocket请求
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
private Task OnWebSocketFrameRequest(IContenxt context)
{
var requests = this.GenerateWebSocketRequest(context);
return new Task(() =>
{
foreach (var request in requests)
{
this.OnWebSocketRequest(context, request);
}
});
}
/// <summary>
/// SSL验证完成后触发
/// 如果起用了SSL，验证通过后才可以往客户端发送数据
/// 如果关闭了会话，将停止传递给下个插件的OnAuthenticated
/// </summary>
/// <param name="sender">发生者</param>
/// <param name="context">上下文</param>
protected virtual void OnSSLAuthenticated(object sender, IContenxt context)
{
}
/// <summary>
/// 收到请求后触发
/// 如果关闭了会话或清空了数据，将停止传递给下个插件的OnRequested
/// </summary>
/// <param name="sender">发生者</param>
/// <param name="context">上下文</param>
protected virtual void OnRequested(object sender, IContenxt context)
{
}
/// <summary>
/// 生成数据包
/// </summary>
/// <param name="context">上下文</param>
/// <param name="fastPacket">数据包</param>
/// <returns></returns>
private IList<FastPacket> GenerateFastPackets(IContenxt context, FastPacket fastPacket)
{
var list = new List<FastPacket> { fastPacket };
while (true)
{
var packet = default(FastPacket);
if (FastPacket.Parse(context.Buffer, out packet) == false)
{
return list;
}
if (packet == null)
{
return list;
}
list.Add(packet);
}
}
/// <summary>
/// 会话断开后触发
/// </summary>
/// <param name="sender">发生者</param>
/// <param name="context">上下文</param>
protected virtual void OnDisconnected(object sender, IContenxt context)
{
}
/// <summary>
/// 处理一般的请求
/// </summary>
/// <param name="route">路由</param>
/// <param name="context">上下文</param>
/// <param name="requestContext">请求上下文</param>
private void ProcessActionRequest(string route, IContenxt context, RequestContext requestContext)
{
var action = this.httpActionList.TryGet(requestContext.Request);
if (action == null)
{
var ex = new HttpException(404, "找不到路径" + route);
this.ProcessHttpException(ex, requestContext);
}
else
{
this.ExecuteHttpAction(action, context, requestContext);
}
}
/// <summary>
/// SSL验证完成后触发
/// 如果起用了SSL，验证通过后才可以往客户端发送数据
/// 如果关闭了会话，将停止传递给下个插件的OnAuthenticated
/// </summary>
/// <param name="sender">发生者</param>
/// <param name="context">上下文</param>
void IPlug.OnAuthenticated(object sender, IContenxt context)
{
this.OnSSLAuthenticated(sender, context);
}
/// <summary>
/// 解析连接请求信息
/// 如果数据未完整则返回null
/// </summary>
/// <param name="context">上下文</param>
/// <param name="request">http请求</param>
/// <exception cref="HttpException"></exception>
/// <returns></returns>
public static bool Parse(IContenxt context, out HttpRequest request)
{
var headerLength = 0;
request = null;
if (Protocol.IsHttp(context.Buffer, out headerLength) == false)
{
return false;
}
if (headerLength <= 0)
{
return true;
}
context.Buffer.Position = 0;
var headerString = context.Buffer.ReadString(headerLength, Encoding.ASCII);
const string pattern = @"^(?<method>[^\s]+)\s(?<path>[^\s]+)\sHTTP\/1\.1\r\n" +
@"((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]*)\r\n)+" +
@"\r\n";
var match = Regex.Match(headerString, pattern, RegexOptions.IgnoreCase);
if (match.Success == false)
{
return false;
}
var httpMethod = GetHttpMethod(match.Groups["method"].Value);
var httpHeader = HttpHeader.Parse(match.Groups["field_name"].Captures, match.Groups["field_value"].Captures);
var contentLength = httpHeader.TryGet<int>("Content-Length");
if (httpMethod == HttpMethod.POST && context.Buffer.Length - headerLength < contentLength)
{
return true; // 数据未完整
}
request = new HttpRequest
{
LocalEndPoint = context.Session.LocalEndPoint,
RemoteEndPoint = context.Session.RemoteEndPoint,
HttpMethod = httpMethod,
Headers = httpHeader
};
var scheme = context.Session.IsSecurity ? "https" : "http";
var url = string.Format("{0}://localhost:{1}{2}", scheme, context.Session.LocalEndPoint.Port, match.Groups["path"].Value);
request.Url = new Uri(url);
request.Path = request.Url.AbsolutePath;
request.Query = HttpNameValueCollection.Parse(request.Url.Query.TrimStart('?'), false);
if (httpMethod == HttpMethod.GET)
{
request.Body = new byte[0];
request.Form = new HttpNameValueCollection();
request.Files = new HttpFile[0];
}
else
{
request.Body = context.Buffer.ReadArray(contentLength);
context.Buffer.Position = headerLength;
HttpRequest.GeneratePostFormAndFiles(request, context.Buffer);
}
context.Buffer.Clear(headerLength + contentLength);
return true;
}
/// <summary>
/// 过滤上下文
/// 返回true的上下文将被idle计时检测
/// </summary>
/// <param name="context">上下文</param>
/// <returns></returns>
protected virtual bool FilterContext(IContenxt context)
{
return(true);
}