/// <summary>
/// 生成Post得到的表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="buffer"></param>
private static void GeneratePostFormAndFiles(HttpRequest request, IReceiveBuffer buffer)
{
var boundary = default(string);
if (request.IsApplicationFormRequest() == true)
{
HttpRequest.GenerateApplicationForm(request);
}
else if (request.IsMultipartFormRequest(out boundary) == true)
{
if (request.Body.Length >= boundary.Length)
{
HttpRequest.GenerateMultipartFormAndFiles(request, buffer, boundary);
}
}
if (request.Form == null)
{
request.Form = new HttpNameValueCollection();
}
if (request.Files == null)
{
request.Files = new HttpFile[0];
}
}
/// <summary>
/// 获取当前的http方法长度
/// </summary>
/// <param name="buffer">收到的数据</param>
/// <returns></returns>
private static int GetMthodLength(IReceiveBuffer buffer)
{
var maxLength = Math.Min(buffer.Length, Protocol.MedthodMaxLength + 1);
for (var i = 0; i < maxLength; i++)
{
if (buffer[i] == Protocol.Space)
{
return i - 1;
}
}
return maxLength;
}
/// <summary>
/// 获取当前的http方法长度
/// </summary>
/// <param name="buffer">收到的数据</param>
/// <returns></returns>
private static int GetMthodLength(IReceiveBuffer buffer)
{
var maxLength = Math.Min(buffer.Length, Protocol.MedthodMaxLength + 1);
for (var i = 0; i < maxLength; i++)
{
if (buffer[i] == Protocol.Space)
{
return(i - 1);
}
}
return(maxLength);
}
/// <summary>
/// 当接收到远程端的数据时，将触发此方法
/// </summary>
/// <param name="buffer">接收到的历史数据</param>
protected sealed override void OnReceive(IReceiveBuffer buffer)
{
while (true)
{
var packet = default(FastPacket);
if (FastPacket.Parse(buffer, out packet) == false)
{
buffer.Clear();
}
if (packet == null)
{
break;
}
// 新线程处理业务内容
Task.Factory.StartNew(() => this.OnReceivePacket(packet));
}
}
/// <summary>
/// 生成表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="buffer"></param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, IReceiveBuffer buffer, string boundary)
{
var doubleCrlf = Encoding.ASCII.GetBytes("\r\n\r\n");
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = buffer.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List <HttpFile>();
var form = new HttpNameValueCollection();
buffer.Position = buffer.Position + boundaryBytes.Length;
while (buffer.Position < maxPosition)
{
var headLength = buffer.IndexOf(doubleCrlf) + doubleCrlf.Length;
if (headLength < doubleCrlf.Length)
{
break;
}
var head = buffer.ReadString(headLength, Encoding.UTF8);
var bodyLength = buffer.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
var mHead = new MultipartHead(head);
if (mHead.IsFile == true)
{
var stream = buffer.ReadArray(bodyLength);
var file = new HttpFile(mHead, stream);
files.Add(file);
}
else
{
var byes = buffer.ReadArray(bodyLength);
var value = HttpUtility.UrlDecode(byes, Encoding.UTF8);
form.Add(mHead.Name, value);
}
buffer.Position = buffer.Position + boundaryBytes.Length;
}
request.Form = form;
request.Files = files.ToArray();
}
/// <summary>
/// 是否为http协议
/// </summary>
/// <param name="buffer">收到的数据</param>
/// <param name="headerLength">头数据长度，包括双换行</param>
/// <returns></returns>
public static bool IsHttp(IReceiveBuffer buffer, out int headerLength)
{
var methodLength = Protocol.GetMthodLength(buffer);
var methodName = buffer.ReadString(methodLength, Encoding.ASCII);
if (Protocol.MethodNames.Any(m => m.StartsWith(methodName, StringComparison.OrdinalIgnoreCase)) == false)
{
headerLength = 0;
return false;
}
buffer.Position = 0;
var headerIndex = buffer.IndexOf(Protocol.DoubleCrlf);
if (headerIndex < 0)
{
headerLength = 0;
return true;
}
headerLength = headerIndex + Protocol.DoubleCrlf.Length;
return true;
}
/// <summary>
/// 是否为http协议
/// </summary>
/// <param name="buffer">收到的数据</param>
/// <param name="headerLength">头数据长度，包括双换行</param>
/// <returns></returns>
public static bool IsHttp(IReceiveBuffer buffer, out int headerLength)
{
var methodLength = Protocol.GetMthodLength(buffer);
var methodName = buffer.ReadString(methodLength, Encoding.ASCII);
if (Protocol.MethodNames.Any(m => m.StartsWith(methodName, StringComparison.OrdinalIgnoreCase)) == false)
{
headerLength = 0;
return(false);
}
buffer.Position = 0;
var headerIndex = buffer.IndexOf(Protocol.DoubleCrlf);
if (headerIndex < 0)
{
headerLength = 0;
return(true);
}
headerLength = headerIndex + Protocol.DoubleCrlf.Length;
return(true);
}
/// <summary> /// 当接收到远程端的数据时，将触发此方法 /// </summary> /// <param name="buffer">接收到的历史数据</param> /// <returns></returns> protected abstract void OnReceive(IReceiveBuffer buffer);
/// <summary>
/// 解析请求的数据
/// 返回请求数据包
/// </summary>
/// <param name="buffer">所有收到的数据</param>
/// <returns></returns>
public unsafe static FrameRequest Parse(IReceiveBuffer buffer)
{
if (buffer.Length < 2)
{
return(null);
}
ByteBits byte0 = buffer[0];
var fin = byte0[0];
var frameCode = (FrameCodes)(byte)byte0.Take(4, 4);
if (fin == false || frameCode == FrameCodes.Continuation)
{
return(null);
}
var rsv = byte0.Take(1, 3);
ByteBits byte1 = buffer[1];
var mask = byte1[0];
if (mask == false || Enum.IsDefined(typeof(FrameCodes), frameCode) == false || rsv != 0)
{
return(null);
}
var contentLength = (int)byte1.Take(1, 7);
buffer.Position = 2;
if (contentLength == 127)
{
contentLength = (int)buffer.ReadUInt64();
}
else if (contentLength == 126)
{
contentLength = (int)buffer.ReadUInt16();
}
var packetLength = 6 + contentLength;
if (buffer.Length < packetLength)
{
return(null);
}
var maskingKey = buffer.ReadArray(4);
var content = buffer.ReadArray(contentLength);
buffer.Clear(packetLength);
if (contentLength > 0)
{
fixed(byte *pcontent = &content[0], pmask = &maskingKey[0])
{
for (var i = 0; i < contentLength; i++)
{
*(pcontent + i) = (byte)(*(pcontent + i) ^ *(pmask + i % 4));
}
}
}
return(new FrameRequest
{
Fin = fin,
Rsv = rsv,
Mask = mask,
Frame = frameCode,
ContentLength = contentLength,
MaskingKey = maskingKey,
Content = content
});
}
/// <summary>
/// 生成表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="buffer"></param>
/// <param name="boundary">边界</param>
private static void GenerateMultipartFormAndFiles(HttpRequest request, IReceiveBuffer buffer, string boundary)
{
var boundaryBytes = Encoding.ASCII.GetBytes("\r\n--" + boundary);
var maxPosition = buffer.Length - Encoding.ASCII.GetBytes("--\r\n").Length;
var files = new List<HttpFile>();
var form = new HttpNameValueCollection();
buffer.Position = buffer.Position + boundaryBytes.Length;
while (buffer.Position < maxPosition)
{
var headLength = buffer.IndexOf(Protocol.DoubleCrlf) + Protocol.DoubleCrlf.Length;
if (headLength < Protocol.DoubleCrlf.Length)
{
break;
}
var head = buffer.ReadString(headLength, Encoding.UTF8);
var bodyLength = buffer.IndexOf(boundaryBytes);
if (bodyLength < 0)
{
break;
}
var mHead = new MultipartHead(head);
if (mHead.IsFile == true)
{
var stream = buffer.ReadArray(bodyLength);
var file = new HttpFile(mHead, stream);
files.Add(file);
}
else
{
var byes = buffer.ReadArray(bodyLength);
var value = HttpUtility.UrlDecode(byes, Encoding.UTF8);
form.Add(mHead.Name, value);
}
buffer.Position = buffer.Position + boundaryBytes.Length;
}
request.Form = form;
request.Files = files.ToArray();
}
/// <summary>
/// 生成Post得到的表单和文件
/// </summary>
/// <param name="request"></param>
/// <param name="buffer"></param>
private static void GeneratePostFormAndFiles(HttpRequest request, IReceiveBuffer buffer)
{
var boundary = default(string);
if (request.IsApplicationFormRequest() == true)
{
HttpRequest.GenerateApplicationForm(request);
}
else if (request.IsMultipartFormRequest(out boundary) == true)
{
if (request.Body.Length >= boundary.Length)
{
HttpRequest.GenerateMultipartFormAndFiles(request, buffer, boundary);
}
}
if (request.Form == null)
{
request.Form = new HttpNameValueCollection();
}
if (request.Files == null)
{
request.Files = new HttpFile[0];
}
}
/// <summary>
/// 解析请求的数据
/// 返回请求数据包
/// </summary>
/// <param name="buffer">所有收到的数据</param>
/// <returns></returns>
public unsafe static FrameRequest Parse(IReceiveBuffer buffer)
{
if (buffer.Length < 2)
{
return null;
}
ByteBits byte0 = buffer[0];
var fin = byte0[0];
var frameCode = (FrameCodes)(byte)byte0.Take(4, 4);
if (fin == false || frameCode == FrameCodes.Continuation)
{
return null;
}
var rsv = byte0.Take(1, 3);
ByteBits byte1 = buffer[1];
var mask = byte1[0];
if (mask == false || Enum.IsDefined(typeof(FrameCodes), frameCode) == false || rsv != 0)
{
return null;
}
var contentLength = (int)byte1.Take(1, 7);
buffer.Position = 2;
if (contentLength == 127)
{
contentLength = (int)buffer.ReadUInt64();
}
else if (contentLength == 126)
{
contentLength = (int)buffer.ReadUInt16();
}
var packetLength = 6 + contentLength;
if (buffer.Length < packetLength)
{
return null;
}
var maskingKey = buffer.ReadArray(4);
var content = buffer.ReadArray(contentLength);
buffer.Clear(packetLength);
if (contentLength > 0)
{
fixed (byte* pcontent = &content[0], pmask = &maskingKey[0])
{
for (var i = 0; i < contentLength; i++)
{
*(pcontent + i) = (byte)(*(pcontent + i) ^ *(pmask + i % 4));
}
}
}
return new FrameRequest
{
Fin = fin,
Rsv = rsv,
Mask = mask,
Frame = frameCode,
ContentLength = contentLength,
MaskingKey = maskingKey,
Content = content
};
}
/// <summary>
/// 解析一个数据包
/// 不足一个封包时返回null
/// </summary>
/// <param name="buffer">接收到的历史数据</param>
/// <param name="packet">数据包</param>
/// <returns></returns>
public static bool Parse(IReceiveBuffer buffer, out FastPacket packet)
{
if (buffer.Length < 1 || buffer[0] != FastPacket.Mark)
{
packet = null;
return false;
}
if (buffer.Length < 5)
{
packet = null;
return true;
}
buffer.Position = 1;
const int packetMinSize = 16;
var totalBytes = buffer.ReadInt32();
if (totalBytes < packetMinSize)
{
packet = null;
return false;
}
// 数据包未接收完整
if (buffer.Length < totalBytes)
{
packet = null;
return true;
}
// api名称数据长度
var apiNameLength = buffer.ReadByte();
if (totalBytes < apiNameLength + packetMinSize)
{
packet = null;
return false;
}
// api名称数据
var apiNameBytes = buffer.ReadArray(apiNameLength);
// 标识符
var id = buffer.ReadInt64();
// 是否为客户端封包
var isFromClient = buffer.ReadBoolean();
// 是否异常
var isException = buffer.ReadBoolean();
// 实体数据
var body = buffer.ReadArray(totalBytes - buffer.Position);
// 清空本条数据
buffer.Clear(totalBytes);
var apiName = Encoding.UTF8.GetString(apiNameBytes);
packet = new FastPacket(apiName, id, isFromClient)
{
TotalBytes = totalBytes,
ApiNameLength = apiNameLength,
IsException = isException,
Body = body
};
return true;
}
/// <summary>
/// 解析一个数据包
/// 不足一个封包时返回null
/// </summary>
/// <param name="buffer">接收到的历史数据</param>
/// <param name="packet">数据包</param>
/// <returns></returns>
public static bool Parse(IReceiveBuffer buffer, out FastPacket packet)
{
if (buffer.Length < 1 || buffer[0] != FastPacket.Mark)
{
packet = null;
return(false);
}
if (buffer.Length < 5)
{
packet = null;
return(true);
}
buffer.Position = 1;
const int packetMinSize = 16;
var totalBytes = buffer.ReadInt32();
if (totalBytes < packetMinSize)
{
packet = null;
return(false);
}
// 数据包未接收完整
if (buffer.Length < totalBytes)
{
packet = null;
return(true);
}
// api名称数据长度
var apiNameLength = buffer.ReadByte();
if (totalBytes < apiNameLength + packetMinSize)
{
packet = null;
return(false);
}
// api名称数据
var apiNameBytes = buffer.ReadArray(apiNameLength);
// 标识符
var id = buffer.ReadInt64();
// 是否为客户端封包
var isFromClient = buffer.ReadBoolean();
// 是否异常
var isException = buffer.ReadBoolean();
// 实体数据
var body = buffer.ReadArray(totalBytes - buffer.Position);
// 清空本条数据
buffer.Clear(totalBytes);
var apiName = Encoding.UTF8.GetString(apiNameBytes);
packet = new FastPacket(apiName, id, isFromClient)
{
TotalBytes = totalBytes,
ApiNameLength = apiNameLength,
IsException = isException,
Body = body
};
return(true);
}