private bool TakeStartLine(SocketInput baton)
{
var remaining = baton.Buffer;
if (remaining.Count < 2)
{
return(false);
}
var firstSpace = -1;
var secondSpace = -1;
var questionMark = -1;
var ch0 = remaining.Array[remaining.Offset];
for (var index = 0; index != remaining.Count - 1; ++index)
{
var ch1 = remaining.Array[remaining.Offset + index + 1];
if (ch0 == '\r' && ch1 == '\n')
{
if (secondSpace == -1)
{
throw new InvalidOperationException("INVALID REQUEST FORMAT");
}
Method = GetString(remaining, 0, firstSpace);
RequestUri = GetString(remaining, firstSpace + 1, secondSpace);
if (questionMark == -1)
{
Path = RequestUri;
QueryString = string.Empty;
}
else
{
Path = GetString(remaining, firstSpace + 1, questionMark);
QueryString = GetString(remaining, questionMark, secondSpace);
}
HttpVersion = GetString(remaining, secondSpace + 1, index);
baton.Skip(index + 2);
return(true);
}
if (ch0 == ' ' && firstSpace == -1)
{
firstSpace = index;
}
else if (ch0 == ' ' && firstSpace != -1 && secondSpace == -1)
{
secondSpace = index;
}
else if (ch0 == '?' && firstSpace != -1 && questionMark == -1 && secondSpace == -1)
{
questionMark = index;
}
ch0 = ch1;
}
return(false);
}
private static bool TakeChunkedLine(SocketInput baton, ref int chunkSizeOut)
{
var remaining = baton.Buffer;
if (remaining.Count < 2)
{
return(false);
}
var ch0 = remaining.Array[remaining.Offset];
var chunkSize = 0;
var mode = 0;
for (var index = 0; index != remaining.Count - 1; ++index)
{
var ch1 = remaining.Array[remaining.Offset + index + 1];
if (mode == 0)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
mode = 1;
}
else if (mode == 1)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else if (ch0 == ';')
{
mode = 2;
}
else if (ch0 == '\r' && ch1 == '\n')
{
baton.Skip(index + 2);
chunkSizeOut = chunkSize;
return(true);
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
}
else if (mode == 2)
{
if (ch0 == '\r' && ch1 == '\n')
{
baton.Skip(index + 2);
chunkSizeOut = chunkSize;
return(true);
}
else
{
// chunk-extensions not currently parsed
}
}
ch0 = ch1;
}
return(false);
}
private bool TakeMessageHeader(SocketInput baton, out bool endOfHeaders)
{
var remaining = baton.Buffer;
endOfHeaders = false;
if (remaining.Count < 2)
{
return false;
}
var ch0 = remaining.Array[remaining.Offset];
var ch1 = remaining.Array[remaining.Offset + 1];
if (ch0 == '\r' && ch1 == '\n')
{
endOfHeaders = true;
baton.Skip(2);
return true;
}
if (remaining.Count < 3)
{
return false;
}
var wrappedHeaders = false;
var colonIndex = -1;
var valueStartIndex = -1;
var valueEndIndex = -1;
for (var index = 0; index != remaining.Count - 2; ++index)
{
var ch2 = remaining.Array[remaining.Offset + index + 2];
if (ch0 == '\r' &&
ch1 == '\n' &&
ch2 != ' ' &&
ch2 != '\t')
{
var name = Encoding.ASCII.GetString(remaining.Array, remaining.Offset, colonIndex);
var value = "";
if (valueEndIndex != -1)
{
value = Encoding.ASCII.GetString(
remaining.Array, remaining.Offset + valueStartIndex, valueEndIndex - valueStartIndex);
}
if (wrappedHeaders)
{
value = value.Replace("\r\n", " ");
}
AddRequestHeader(name, value);
baton.Skip(index + 2);
return true;
}
if (colonIndex == -1 && ch0 == ':')
{
colonIndex = index;
}
else if (colonIndex != -1 &&
ch0 != ' ' &&
ch0 != '\t' &&
ch0 != '\r' &&
ch0 != '\n')
{
if (valueStartIndex == -1)
{
valueStartIndex = index;
}
valueEndIndex = index + 1;
}
else if (!wrappedHeaders &&
ch0 == '\r' &&
ch1 == '\n' &&
(ch2 == ' ' ||
ch2 == '\t'))
{
wrappedHeaders = true;
}
ch0 = ch1;
ch1 = ch2;
}
return false;
}
private bool TakeStartLine(SocketInput baton)
{
var remaining = baton.Buffer;
if (remaining.Count < 2)
{
return false;
}
var firstSpace = -1;
var secondSpace = -1;
var questionMark = -1;
var ch0 = remaining.Array[remaining.Offset];
for (var index = 0; index != remaining.Count - 1; ++index)
{
var ch1 = remaining.Array[remaining.Offset + index + 1];
if (ch0 == '\r' && ch1 == '\n')
{
if (secondSpace == -1)
{
throw new InvalidOperationException("INVALID REQUEST FORMAT");
}
Method = GetString(remaining, 0, firstSpace);
RequestUri = GetString(remaining, firstSpace + 1, secondSpace);
if (questionMark == -1)
{
Path = RequestUri;
QueryString = string.Empty;
}
else
{
Path = GetString(remaining, firstSpace + 1, questionMark);
QueryString = GetString(remaining, questionMark, secondSpace);
}
HttpVersion = GetString(remaining, secondSpace + 1, index);
baton.Skip(index + 2);
return true;
}
if (ch0 == ' ' && firstSpace == -1)
{
firstSpace = index;
}
else if (ch0 == ' ' && firstSpace != -1 && secondSpace == -1)
{
secondSpace = index;
}
else if (ch0 == '?' && firstSpace != -1 && questionMark == -1 && secondSpace == -1)
{
questionMark = index;
}
ch0 = ch1;
}
return false;
}
private static bool TakeChunkedLine(SocketInput baton, ref int chunkSizeOut)
{
var remaining = baton.Buffer;
if (remaining.Count < 2)
{
return false;
}
var ch0 = remaining.Array[remaining.Offset];
var chunkSize = 0;
var mode = 0;
for (var index = 0; index != remaining.Count - 1; ++index)
{
var ch1 = remaining.Array[remaining.Offset + index + 1];
if (mode == 0)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
mode = 1;
}
else if (mode == 1)
{
if (ch0 >= '0' && ch0 <= '9')
{
chunkSize = chunkSize * 0x10 + (ch0 - '0');
}
else if (ch0 >= 'A' && ch0 <= 'F')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('A' - 10));
}
else if (ch0 >= 'a' && ch0 <= 'f')
{
chunkSize = chunkSize * 0x10 + (ch0 - ('a' - 10));
}
else if (ch0 == ';')
{
mode = 2;
}
else if (ch0 == '\r' && ch1 == '\n')
{
baton.Skip(index + 2);
chunkSizeOut = chunkSize;
return true;
}
else
{
throw new NotImplementedException("INVALID REQUEST FORMAT");
}
}
else if (mode == 2)
{
if (ch0 == '\r' && ch1 == '\n')
{
baton.Skip(index + 2);
chunkSizeOut = chunkSize;
return true;
}
else
{
// chunk-extensions not currently parsed
}
}
ch0 = ch1;
}
return false;
}
private bool TakeMessageHeader(SocketInput baton, out bool endOfHeaders)
{
var remaining = baton.Buffer;
endOfHeaders = false;
if (remaining.Count < 2)
{
return(false);
}
var ch0 = remaining.Array[remaining.Offset];
var ch1 = remaining.Array[remaining.Offset + 1];
if (ch0 == '\r' && ch1 == '\n')
{
endOfHeaders = true;
baton.Skip(2);
return(true);
}
if (remaining.Count < 3)
{
return(false);
}
var wrappedHeaders = false;
var colonIndex = -1;
var valueStartIndex = -1;
var valueEndIndex = -1;
for (var index = 0; index != remaining.Count - 2; ++index)
{
var ch2 = remaining.Array[remaining.Offset + index + 2];
if (ch0 == '\r' &&
ch1 == '\n' &&
ch2 != ' ' &&
ch2 != '\t')
{
var name = Encoding.ASCII.GetString(remaining.Array, remaining.Offset, colonIndex);
var value = "";
if (valueEndIndex != -1)
{
value = Encoding.ASCII.GetString(
remaining.Array, remaining.Offset + valueStartIndex, valueEndIndex - valueStartIndex);
}
if (wrappedHeaders)
{
value = value.Replace("\r\n", " ");
}
AddRequestHeader(name, value);
baton.Skip(index + 2);
return(true);
}
if (colonIndex == -1 && ch0 == ':')
{
colonIndex = index;
}
else if (colonIndex != -1 &&
ch0 != ' ' &&
ch0 != '\t' &&
ch0 != '\r' &&
ch0 != '\n')
{
if (valueStartIndex == -1)
{
valueStartIndex = index;
}
valueEndIndex = index + 1;
}
else if (!wrappedHeaders &&
ch0 == '\r' &&
ch1 == '\n' &&
(ch2 == ' ' ||
ch2 == '\t'))
{
wrappedHeaders = true;
}
ch0 = ch1;
ch1 = ch2;
}
return(false);
}
