internal override bool IsAllowedHeaderName(HeaderDescriptor descriptor)
{
if (!_containsTrailingHeaders)
{
return(true);
}
KnownHeader knownHeader = KnownHeaders.TryGetKnownHeader(descriptor.Name);
if (knownHeader == null)
{
return(true);
}
return((knownHeader.HeaderType & HttpHeaderType.NonTrailing) == 0);
}
internal static IEnumerable <KeyValuePair <HeaderDescriptor, string[]> > GetHeaderDescriptorsAndValues(this HttpHeaders headers)
{
List <KeyValuePair <HeaderDescriptor, string[]> > result = new List <KeyValuePair <HeaderDescriptor, string[]> >();
foreach (KeyValuePair <string, IEnumerable <string> > header in headers)
{
KnownHeader knownHeader = KnownHeaders.TryGetKnownHeader(header.Key);
if (knownHeader == null)
{
knownHeader = new KnownHeader(header.Key);
}
HeaderDescriptor descriptor = new HeaderDescriptor(knownHeader);
result.Add(new KeyValuePair <HeaderDescriptor, string[]>(descriptor, header.Value.ToArray()));
}
return(result);
}
// 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(HttpRuleParser.GetTokenString(headerName));
return(true);
}
public override bool Equals(object?obj) => throw new InvalidOperationException(); // Ensure this is never called, to avoid boxing
// Returns false for invalid header name.
public static bool TryGet(string headerName, out HeaderDescriptor descriptor)
{
Debug.Assert(!string.IsNullOrEmpty(headerName));
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(headerName);
return(true);
}
// This should not be used directly; use static TryGet below
internal HeaderDescriptor(string headerName, bool customHeader = false)
{
Debug.Assert(customHeader || KnownHeaders.TryGetKnownHeader(headerName) is null, $"The {nameof(KnownHeader)} overload should be used for {headerName}");
_descriptor = headerName;
}