// Returns false for invalid header name.
public static bool TryGet(ReadOnlySpan <byte> headerName, out HeaderDescriptor descriptor)
{
Debug.Assert(headerName.Length > 0);
KnownHeader knownHeader = KnownHeaders.TryGetKnownHeader(headerName);
if (knownHeader != null)
{
descriptor = new HeaderDescriptor(knownHeader);
return(true);
}
if (!HttpRuleParser.IsToken(headerName))
{
descriptor = default(HeaderDescriptor);
return(false);
}
descriptor = new HeaderDescriptor(ByteArrayHelpers.GetStringFromByteSpan(headerName));
return(true);
}
public string GetHeaderValue(ReadOnlySpan <byte> headerValue)
{
if (headerValue.Length == 0)
{
return(string.Empty);
}
// If it's a known header value, use the known value instead of allocating a new string.
if (_knownHeader != null && _knownHeader.KnownValues != null)
{
string[] knownValues = _knownHeader.KnownValues;
for (int i = 0; i < knownValues.Length; i++)
{
if (ByteArrayHelpers.EqualsOrdinalAsciiIgnoreCase(knownValues[i], headerValue))
{
return(knownValues[i]);
}
}
}
return(ByteArrayHelpers.GetStringFromByteSpan(headerValue));
}