/// <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) { 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> /// 解析回复头信息 /// </summary> /// <param name="streamReader">数据读取器</param> /// <returns></returns> public static HttpResponseParseResult Parse(ISessionStreamReader streamReader) { var result = new HttpResponseParseResult(); streamReader.Position = 0; if (streamReader.StartWith(HttpVersion11) == false) { return(result); } var endIndex = streamReader.IndexOf(DoubleCRLF); if (endIndex < 0) { return(result); } streamReader.Position += HttpVersion11.Length + 1; var statusLength = streamReader.IndexOf(Space); if (statusLength < 0) { return(result); } var status = streamReader.ReadString(Encoding.ASCII, statusLength); streamReader.Position += 1; var descriptionLenth = streamReader.IndexOf(CRLF); if (descriptionLenth < 0) { return(result); } var description = streamReader.ReadString(Encoding.ASCII, descriptionLenth); streamReader.Position += CRLF.Length; var httpHeader = new HttpHeader(); var headerLength = endIndex + DoubleCRLF.Length; while (streamReader.Position < headerLength) { var keyLength = streamReader.IndexOf(KvSpliter); if (keyLength <= 0) { break; } var key = streamReader.ReadString(Encoding.ASCII, keyLength); streamReader.Position += KvSpliter.Length; var valueLength = streamReader.IndexOf(CRLF); if (valueLength < 0) { break; } var value = streamReader.ReadString(Encoding.ASCII, valueLength); if (streamReader.StartWith(CRLF) == false) { break; } streamReader.Position += CRLF.Length; httpHeader.Add(key, value); } result.Description = description; result.Status = int.Parse(status); result.IsHttp = true; result.Header = httpHeader; return(result); }