/// <summary>
/// 生成表单和文件
/// </summary>
/// <param name="request">请求</param>
/// <param name="streamReader">数据读取器</param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, ISessionStreamReader streamReader, string boundary)
{
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = streamReader.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List <HttpFile>();
var form = new HttpNameValueCollection();
streamReader.Position = streamReader.Position + boundaryBytes.Length;
while (streamReader.Position < maxPosition)
{
var headLength = streamReader.IndexOf(DoubleCRLF) + DoubleCRLF.Length;
if (headLength < DoubleCRLF.Length)
{
break;
}
var head = streamReader.ReadString(Encoding.UTF8, headLength);
var bodyLength = streamReader.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
var mHead = new MultipartHead(head);
if (mHead.TryGetFileName(out string fileName) == true)
{
var bytes = streamReader.ReadArray(bodyLength);
var file = new HttpFile(mHead.Name, fileName, bytes);
files.Add(file);
}
/// <summary>
/// 设置握手结果
/// </summary>
/// <param name="streamReader">数据读取器</param>
/// <returns></returns>
public bool TrySetResult(ISessionStreamReader streamReader)
{
streamReader.Position = 0;
var index = streamReader.IndexOf(DoubleCrlf);
if (index < 0)
{
return(false);
}
var length = index + DoubleCrlf.Length;
var header = streamReader.ReadString(Encoding.ASCII, length);
streamReader.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">请求</param>
/// <param name="streamReader">数据读取器</param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, ISessionStreamReader streamReader, string boundary)
{
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = streamReader.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List <HttpFile>();
var form = new HttpNameValueCollection();
streamReader.Position = streamReader.Position + boundaryBytes.Length;
while (streamReader.Position < maxPosition)
{
var headLength = streamReader.IndexOf(DoubleCRLF) + DoubleCRLF.Length;
if (headLength < DoubleCRLF.Length)
{
break;
}
var head = streamReader.ReadString(Encoding.UTF8, headLength);
var bodyLength = streamReader.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
string fileName = null;
var partItem = new MultipartItem(head);
if (partItem.TryGetFileName(out fileName) == true)
{
var bytes = streamReader.ReadArray(bodyLength);
var file = new HttpFile(partItem.Name, fileName, bytes);
files.Add(file);
}
else
{
var byes = streamReader.ReadArray(bodyLength);
var value = HttpUtility.UrlDecode(byes, Encoding.UTF8);
form.Add(partItem.Name, value);
}
streamReader.Position = streamReader.Position + boundaryBytes.Length;
}
request.Form = form;
request.Files = files.ToArray();
}
/// <summary>
/// 是否为http协议
/// </summary>
/// <param name="streamReader">数据读取器</param>
/// <param name="headerLength">头数据长度，包括双换行</param>
/// <returns></returns>
private static bool IsHttp(ISessionStreamReader streamReader, out int headerLength)
{
var methodLength = HttpRequestParser.GetMthodLength(streamReader);
var methodName = streamReader.ReadString(Encoding.ASCII, methodLength);
if (HttpRequestParser.MethodNames.Any(m => m.StartsWith(methodName, StringComparison.OrdinalIgnoreCase)) == false)
{
headerLength = 0;
return(false);
}
streamReader.Position = 0;
var headerIndex = streamReader.IndexOf(HttpRequestParser.DoubleCrlf);
if (headerIndex < 0)
{
headerLength = 0;
return(true);
}
headerLength = headerIndex + HttpRequestParser.DoubleCrlf.Length;
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);
}