public static RequestInfo Analyze(MemoryStream ms, ref int total)
{
ms.Position = 0;
int iChar, iLoc = 0;
while ((iChar = ms.ReadByte()) > -1)
{
if (iChar.Equals(13))
{
if (ms.ReadByte().Equals(10))
{
if (ms.ReadByte().Equals(13))
{
if (ms.ReadByte().Equals(10))
{
iLoc = (int)(ms.Position - 4);
break;
}
}
}
}
}
if (iLoc == 0)
{
return(null);
}
byte[] _header_buffer = new byte[iLoc];
ms.Position = 0;
ms.Read(_header_buffer, 0, iLoc);
string _header = Encoding.ASCII.GetString(_header_buffer);
string Method = _header.Substring(0, _header.IndexOf(' '));
RequestInfo request = null;
if (Method == "GET")
{
request = new RequestInfo(_header);
request.ParseHeaders();
return(request);
}
else if (Method == "POST")
{
Match m = regLen.Match(_header);
if (!m.Success || !int.TryParse(m.Value.Substring(15), out int content_length))
{
throw new MyException(0, "无请求长度！");
}
total = content_length + iLoc + 4;
if ((iLoc + 4 + content_length) == ms.Length)
{
request = new RequestInfo(_header);
byte[] buffer = new byte[content_length];
ms.Position = iLoc + 4;
ms.Read(buffer, 0, content_length);
request.EntityBody = buffer;
request.ParseHeaders();
}
return(request);
}
throw new MyException(0, "错误的HTTP请求！");
}