void ParseMultiPart(string contentType, byte[] buffer, System.Text.Encoding encoding)
{
int boundaryIndex = contentType.IndexOf("boundary=", System.StringComparison.OrdinalIgnoreCase);
if (boundaryIndex == -1)
{
return;
}
_form = new System.Collections.Specialized.NameValueCollection();
var files = new HttpFileCollection();
_files = files;
string boundary = contentType.Substring(boundaryIndex + "boundary=".Length);
byte[] spliter = System.Text.Encoding.ASCII.GetBytes(boundary + "\r\nContent-Disposition: form-data; name=\"");
//byte[] endFlags = System.Text.Encoding.ASCII.GetBytes(boundary + "--");
bool ended = false;
int index = 0;
int endIndex = -1;
while (!ended && index < buffer.Length - 1)
{
index += spliter.Length + 2;
endIndex = BinarySearch(buffer, index, 34);
if (endIndex == -1)
{
break;
}
string name = encoding.GetString(buffer, index, endIndex - index);
index = endIndex + 1;
bool isFile = false;
string filename = null;
string contentTypeHeader = null;
while (true)
{
if (buffer[index] == 59) //; 还有其它值
{
index += 2;
endIndex = BinarySearch(buffer, index, 61);//=
if (endIndex == -1)
{
ended = true;
break;
}
string name2 = encoding.GetString(buffer, index, endIndex - index);
index = endIndex + 2;//="
endIndex = BinarySearch(buffer, index, 34);
if (endIndex == -1)
{
ended = true;
break;
}
string value2 = encoding.GetString(buffer, index, endIndex - index);
index = endIndex + 1; //\r
//Console.WriteLine("{0}=[{1}]", name2, value2);
if (string.Equals(name2, "filename", System.StringComparison.OrdinalIgnoreCase))
{
isFile = true;
filename = value2;
}
}
else
{
break;
}
}
if (ended)
{
break;
}
index++; //\n
if (buffer[index + 1] != 13) //headers
{
index++;
endIndex = BinarySearch(buffer, index, 58);//:
if (endIndex == -1)
{
break;
}
string headerName = System.Text.Encoding.ASCII.GetString(buffer, index, endIndex - index);
index = endIndex + 2;
endIndex = BinarySearch(buffer, index, 13);//\r
if (endIndex == -1)
{
break;
}
string headerValue = System.Text.Encoding.ASCII.GetString(buffer, index, endIndex - index);
index = endIndex + 1;//\r
if (string.Equals(headerName, "Content-Type", System.StringComparison.OrdinalIgnoreCase))
{
contentTypeHeader = headerValue;
}
}
index += 3;
if (isFile)
{
endIndex = BinarySearch(buffer, index, 13, new byte[] { 13, 10, 45, 45, 45, 45 });
}
else
{
endIndex = BinarySearch(buffer, index, 13, new byte[] { 13, 10 });
}
if (endIndex == -1)
{
break;
}
int valueLength = endIndex - index;
if (isFile)
{
_form.Add(name, filename);
System.IO.MemoryStream inputStream = null;
if (valueLength > 0)
{
inputStream = new System.IO.MemoryStream(valueLength);
inputStream.Position = 0;
inputStream.Write(buffer, index, valueLength);
inputStream.Position = 0;
}
if (string.IsNullOrEmpty(contentType))
{
contentType = "application/octet-stream";
}
HttpPostedFile file = new HttpPostedFile(inputStream, filename, valueLength, contentTypeHeader);
files.Add(name, file);
}
else
{
byte[] valueBuffer = new byte[valueLength];
System.Array.Copy(buffer, index, valueBuffer, 0, valueLength);
_form.Add(name, encoding.GetString(valueBuffer));
}
index = endIndex + 2;
}
}
