/// <summary>
/// Parse a message value.
/// </summary>
/// <param name="reader">Reader containing the string that should be parsed.</param>
/// <returns>Newly created header.</returns>
/// <exception cref="ParseException">Header value is malformed.</exception>
/// <example>
/// sip:[email protected]:5060
/// [email protected]:5060
/// jonas:[email protected]
/// sip:[email protected]
/// mailto:[email protected]
/// </example>
public static SipUri Parse(ITextReader reader)
{
string first = reader.ReadUntil("@:");
string scheme = null;
string userName;
string password = null;
string domain;
int port = 0;
bool containsAt = reader.Contains('@');
// scheme:domain:port
// scheme:domain
// domain:port
if (reader.Current == ':' && !containsAt)
{
reader.Consume();
//scheme:domain:port or scheme:domain
if (IsValidScheme(first))
{
scheme = first;
domain = reader.ReadToEnd(":");
if (reader.EOF)
return new SipUri(scheme, domain, 0);
//scheme:domain:port
reader.Consume(':');
first = reader.ReadToEnd();
}
else // domain:port or just domain
{
domain = first;
first = reader.ReadToEnd(":");
}
if (!int.TryParse(first, out port))
throw new ParseException("Port is not a number: " + first);
return new SipUri(scheme, domain, port);
}
// Can either be "scheme:username"
// or "username:password"
// or "scheme:username:password"
else if (reader.Current == ':')
{
reader.Consume();
// Check if we got another colon (scheme:username:password)
string second = reader.ReadUntil(":@");
if (reader.Current == ':')
{
scheme = first;
userName = second;
reader.Consume();
password = reader.ReadUntil('@');
}
// it's "scheme:username" or "username:password"
else
{
//TODO: Create a ProtocolProvider singleton
if (first == "tel" || first == "sip" || first == "sips" || first == "mailto")
{
scheme = first;
userName = second;
}
else
{
userName = first;
password = second;
}
}
}
// only username
else
userName = first;
reader.Consume(); // eat delimiter.
domain = reader.ReadToEnd(":;");
if (reader.Current == '\r' || userName == null)
return null; // domain was not specified.
// We got a port.
if (reader.Current == ':')
{
reader.Consume();
string portStr = reader.ReadToEnd(';');
if (portStr != null)
{
if (!int.TryParse(portStr, out port))
return null;
}
}
// parse parameters
var values = new KeyValueCollection();
if (reader.Current == ';')
ParseParameters(values, reader);
return new SipUri(scheme, userName, password, domain, port, values);
}