private ViaHeaderValue(ViaHeaderValue source)
{
Contract.Requires(source != null);
_protocolName = source._protocolName;
_protocolVersion = source._protocolVersion;
_receivedBy = source._receivedBy;
_comment = source._comment;
}
public static bool TryParse(string input, out ViaHeaderValue parsedValue)
{
int index = 0;
object output;
parsedValue = null;
if (GenericHeaderParser.SingleValueViaParser.TryParseValue(input, null, ref index, out output))
{
parsedValue = (ViaHeaderValue)output;
return(true);
}
return(false);
}
public override bool Equals(object obj)
{
ViaHeaderValue other = obj as ViaHeaderValue;
if (other == null)
{
return(false);
}
// Note that for token and host case-insensitive comparison is used. Comments are compared using case-
// sensitive comparison.
return(string.Equals(_protocolVersion, other._protocolVersion, StringComparison.OrdinalIgnoreCase) &&
string.Equals(_receivedBy, other._receivedBy, StringComparison.OrdinalIgnoreCase) &&
string.Equals(_protocolName, other._protocolName, StringComparison.OrdinalIgnoreCase) &&
string.Equals(_comment, other._comment, StringComparison.Ordinal));
}
internal static int GetViaLength(string input, int startIndex, out object parsedValue)
{
Contract.Requires(startIndex >= 0);
parsedValue = null;
if (string.IsNullOrEmpty(input) || (startIndex >= input.Length))
{
return(0);
}
// Read <protocolName> and <protocolVersion> in '[<protocolName>/]<protocolVersion> <receivedBy> [<comment>]'
string protocolName = null;
string protocolVersion = null;
int current = GetProtocolEndIndex(input, startIndex, out protocolName, out protocolVersion);
// If we reached the end of the string after reading protocolName/Version we return (we expect at least
// <receivedBy> to follow). If reading protocolName/Version read 0 bytes, we return.
if ((current == startIndex) || (current == input.Length))
{
return(0);
}
Debug.Assert(protocolVersion != null);
// Read <receivedBy> in '[<protocolName>/]<protocolVersion> <receivedBy> [<comment>]'
string receivedBy = null;
int receivedByLength = HttpRuleParser.GetHostLength(input, current, true, out receivedBy);
if (receivedByLength == 0)
{
return(0);
}
current = current + receivedByLength;
current = current + HttpRuleParser.GetWhitespaceLength(input, current);
string comment = null;
if ((current < input.Length) && (input[current] == '('))
{
// We have a <comment> in '[<protocolName>/]<protocolVersion> <receivedBy> [<comment>]'
int commentLength = 0;
if (HttpRuleParser.GetCommentLength(input, current, out commentLength) != HttpParseResult.Parsed)
{
return(0); // We found a '(' character but it wasn't a valid comment. Abort.
}
comment = input.Substring(current, commentLength);
current = current + commentLength;
current = current + HttpRuleParser.GetWhitespaceLength(input, current);
}
ViaHeaderValue result = new ViaHeaderValue();
result._protocolVersion = protocolVersion;
result._protocolName = protocolName;
result._receivedBy = receivedBy;
result._comment = comment;
parsedValue = result;
return(current - startIndex);
}