/// <summary>
/// Static constructor.
/// </summary>
static SipHelper()
{
L2C[] l2c = new L2C[] {
new L2C(SipHeader.CallID, "i"),
new L2C(SipHeader.Contact, "m"),
new L2C(SipHeader.ContentEncoding, "e"),
new L2C(SipHeader.ContentLength, "l"),
new L2C(SipHeader.ContentType, "c"),
new L2C(SipHeader.From, "f"),
new L2C(SipHeader.Subject, "s"),
new L2C(SipHeader.Supported, "k"),
new L2C(SipHeader.To, "t"),
new L2C(SipHeader.Via, "v"),
};
compactToLongHeader = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
longToCompactHeader = new Dictionary <string, string>(StringComparer.OrdinalIgnoreCase);
foreach (L2C map in l2c)
{
compactToLongHeader.Add(map.Compact, map.Long);
longToCompactHeader.Add(map.Long, map.Compact);
}
allowDefault = new SipHeader("Allow", new string[] {
"INVITE", "ACK", "CANCEL", "OPTIONS", "BYE", "REFER", "NOTIFY", "MESSAGE", "SUBSCRIBE", "INFO"
});
int pos = 0;
nextTagID = Helper.ReadInt64(Crypto.Rand(8), ref pos);
}
/// <summary>
/// Adds a header to the message, replacing any existing header
/// with this name.
/// </summary>
/// <param name="header">The new header.</param>
public void SetHeader(SipHeader header)
{
if (header == null)
{
throw new ArgumentNullException("header");
}
this[header.Name] = header;
}
/// <summary>
/// Returns a deep copy of the instance.
/// </summary>
/// <returns>The cloned <see cref="SipHeader" />.</returns>
public SipHeader Clone()
{
var clone = new SipHeader();
clone.isSpecial = this.isSpecial;
clone.name = this.name;
clone.values = new string[this.values.Length];
Array.Copy(this.values, clone.values, this.values.Length);
return(clone);
}
/// <summary>
/// Adds a header to the message, replacing any existing header
/// with this name.
/// </summary>
/// <param name="name">The header name.</param>
/// <param name="value">The new value (or <c>null</c> to remove any existing header).</param>
public void SetHeader(string name, string value)
{
if (value == null)
{
if (headers.ContainsKey(name))
{
headers.Remove(name);
}
return;
}
this[name] = new SipHeader(name, value);
}