/// <summary>
/// 设置握手结果
/// </summary>
/// <param name="inputStream">输入流</param>
/// <returns></returns>
public bool TrySetResult(IStreamReader inputStream)
{
inputStream.Position = 0;
var index = inputStream.IndexOf(DoubleCrlf);
if (index < 0)
{
return(false);
}
var length = index + DoubleCrlf.Length;
var header = inputStream.ReadString(Encoding.ASCII, length);
inputStream.Clear(length);
const string pattern = @"^HTTP/1.1 101 Switching Protocols\r\n((?<field_name>[^:\r\n]+):\s(?<field_value>[^\r\n]*)\r\n)+\r\n";
var match = Regex.Match(header, pattern, RegexOptions.IgnoreCase);
if (match.Success == true)
{
var httpHeader = HttpHeader.Parse(match.Groups["field_name"].Captures, match.Groups["field_value"].Captures);
var secAccept = httpHeader["Sec-WebSocket-Accept"];
const string guid = "258EAFA5-E914-47DA-95CA-C5AB0DC85B11";
var bytes = SHA1.Create().ComputeHash(Encoding.UTF8.GetBytes(this.secKey + guid));
var secValue = Convert.ToBase64String(bytes);
if (secValue == secAccept)
{
return(this.TrySetResult(SocketError.Success));
}
}
return(this.TrySetResult(SocketError.SocketError));
}
/// <summary>
/// 生成表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="stream"></param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, IStreamReader stream, string boundary)
{
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = stream.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List <HttpFile>();
var form = new HttpNameValueCollection();
stream.Position = stream.Position + boundaryBytes.Length;
while (stream.Position < maxPosition)
{
var headLength = stream.IndexOf(HttpRequestParser.DoubleCrlf) + HttpRequestParser.DoubleCrlf.Length;
if (headLength < HttpRequestParser.DoubleCrlf.Length)
{
break;
}
var head = stream.ReadString(Encoding.UTF8, headLength);
var bodyLength = stream.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
var mHead = new MultipartHead(head);
if (mHead.IsFile == true)
{
var bytes = stream.ReadArray(bodyLength);
var file = new HttpFile(mHead, bytes);
files.Add(file);
}
else
{
var byes = stream.ReadArray(bodyLength);
var value = HttpUtility.UrlDecode(byes, Encoding.UTF8);
form.Add(mHead.Name, value);
}
stream.Position = stream.Position + boundaryBytes.Length;
}
request.Form = form;
request.Files = files.ToArray();
}
/// <summary>
/// 是否为http协议
/// </summary>
/// <param name="stream">收到的数据</param>
/// <param name="headerLength">头数据长度，包括双换行</param>
/// <returns></returns>
private static bool IsHttp(IStreamReader stream, out int headerLength)
{
var methodLength = HttpRequestParser.GetMthodLength(stream);
var methodName = stream.ReadString(Encoding.ASCII, methodLength);
if (HttpRequestParser.MethodNames.Any(m => m.StartsWith(methodName, StringComparison.OrdinalIgnoreCase)) == false)
{
headerLength = 0;
return(false);
}
stream.Position = 0;
var headerIndex = stream.IndexOf(HttpRequestParser.DoubleCrlf);
if (headerIndex < 0)
{
headerLength = 0;
return(true);
}
headerLength = headerIndex + HttpRequestParser.DoubleCrlf.Length;
return(true);
}
