/// <summary>
/// Convets to string using the encoding specified in the content type header
/// </summary>
/// <param name="contentTypeHeader"></param>
/// <param name="encoding">Outputs the encoding for further use</param>
/// <returns></returns>
public string ToString(string contentTypeHeader, out Encoding encoding)
{
string html = String.Empty;
encoding = HttpUtil.GetEncoding(contentTypeHeader);
Decoder decoder = encoding.GetDecoder();
if (_chunks.Count > 0)
{
LinkedListNode <byte[]> currChunk = _chunks.First;
int charSize = 0;
do
{
//get the number of unicode chars in the current secquence
charSize += decoder.GetCharCount(currChunk.Value, 0, currChunk.Value.Length, true);
currChunk = currChunk.Next;
}while (currChunk != null);
currChunk = _chunks.First;
char[] chars = new char[charSize];
int totalLen = 0;
do
{
//get the number of unicode chars in the current secquence
int count = decoder.GetChars(currChunk.Value, 0, currChunk.Value.Length, chars, totalLen);
totalLen += count; //add the current char size to the total length
currChunk = currChunk.Next;
}while (currChunk != null);
//if the totalLen is smaller after the transformation shrink the chars
html = new String(chars, 0, totalLen);
}
return(html);
}
/// <summary>
/// Parses the request
/// </summary>
/// <param name="requestBytes"></param>
/// <param name="parseVariables">Whether to parse parameters for the request</param>
private void ParseRequest(byte [] requestBytes, bool parseVariables)
{
MemoryStream ms = new MemoryStream(requestBytes);
byte [] lineBytes = Utils.ReadLine(ms, ESTIMATED_LINE_SIZE, LineEnding.Any);
string requestLine = Constants.DefaultEncoding.GetString(lineBytes);
if (!InitMethod(requestLine))
{
//the request line is not long enough to read the method
return;
}
//extract version
int lastSpace = requestLine.LastIndexOf(' ');
if (lastSpace > -1)
{
_httpVersion = requestLine.Substring(lastSpace + 1);
}
//extract query string
int firstQuestionMark = requestLine.LastIndexOf('?');
if (firstQuestionMark > -1)
{
_queryString = requestLine.Substring(firstQuestionMark + 1);
int endOfQuery = _queryString.LastIndexOf(' ');
if (endOfQuery > -1)
{
_queryString = _queryString.Substring(0, endOfQuery);
}
}
//iterate through the lines as long as there is no empty line which would separate post data
string line;
do
{
lineBytes = Utils.ReadLine(ms, ESTIMATED_LINE_SIZE, LineEnding.Any);
if (lineBytes != null && lineBytes.Length > 0)
{
line = Constants.DefaultEncoding.GetString(lineBytes);
string [] nameAndValue = line.Split(new char[] { ':' }, 3);
if (nameAndValue.Length == 2)
{
_headers.Add(nameAndValue[0], nameAndValue[1].Trim());
}
else if (nameAndValue.Length == 3)
{
if (String.IsNullOrWhiteSpace(nameAndValue[0]))
{
_headers.Add(String.Join(":", nameAndValue[0], nameAndValue[1]), nameAndValue[2].Trim());
}
else
{
_headers.Add(nameAndValue[0], String.Join(":", nameAndValue[1], nameAndValue[2]).Trim());
}
}
}
}while (lineBytes != null && lineBytes.Length > 0);
//initialize encoding
string contentTypeValue = _headers["Content-Type"];
if (contentTypeValue != null)
{
_contentEncoding = HttpUtil.GetEncoding(contentTypeValue);
}
if (lineBytes != null) //we read an empty line signaling that the headers are over
{
_isFullRequest = true;
string contentLenHeaderString = _headers["Content-Length"];
if (contentLenHeaderString != null || IsPost || IsPut)
{
int contentLenHeaderVal = 0;
int.TryParse(contentLenHeaderString, out contentLenHeaderVal);
long pos = ms.Position;
int contentLength = (int)(ms.Length - pos);
if (contentLenHeaderVal > contentLength)
{
_isFullRequest = false;
}
_contentData = new byte[contentLength];
ms.Read(_contentData, 0, contentLength);
}
}
else
{
_isFullRequest = false; //we didn't finish reading the headers
}
if (_headers["Host"] != null)
{
PopulateHostAndPort(_headers["Host"]);
}
else if (_headers[":authority"] != null)
{
PopulateHostAndPort(_headers[":authority"]);
}
int indexOfPath = _method.Length + 1;
string temp = requestLine.Substring(indexOfPath);
//remove the query and the http version
if (_httpVersion != String.Empty)
{
temp = temp.Replace(_httpVersion, String.Empty);
}
if (_queryString != String.Empty)
{
temp = temp.Replace(String.Format("?{0} ", _queryString), String.Empty);
}
string protocol = String.Empty;
//remove the protocol://host
if (temp.IndexOf("https://", StringComparison.OrdinalIgnoreCase) == 0)
{
_isSecure = true;
protocol = "https://";
}
else if (temp.IndexOf("http://", StringComparison.OrdinalIgnoreCase) == 0)
{
_isProxyHttp = true;
_isSecure = false;
protocol = "http://";
}
if (protocol != String.Empty) //this is a proxy request
{
// skip the protocol string and process whatever comes after that (hostAndPort, and then Path)
// we already checked that temp starts with protocol and protocol is not empty
temp = temp.Substring(protocol.Length);
//next extract host and port
//find the first fw slash
int indexOfFws = temp.IndexOf('/');
string hostAndPort = temp.Substring(0, indexOfFws);
PopulateHostAndPort(hostAndPort);
temp = temp.Substring(indexOfFws);
}
_path = temp.TrimEnd(' ');
//construct a search regex
string _regexPath = Regex.Escape(_path);
if (parseVariables)
{
ParseVariables();
}
//in the case of custom parameters in the path make sure to remove from the regex
if (_pathVariables.Count > 0)
{
_regexPath = NormalizePath(_regexPath, ".+");
}
_searchRegex = String.Format("{0} ({1}[^/]+)?{2}[\\s|\\?]", _method, _isSecure ? "https://" : "http://", _regexPath);
//replace any dynamic elements
_searchRegex = _searchRegex.Replace(Constants.DYNAMIC_ELEM_STRING, ".+");
_path = _path.TrimEnd(' ', '?');
}