private Dictionary <string, SIPUserAgentConfiguration> ParseSIPUserAgentConfigurations(XmlNode userAgentConifgNode)
{
try {
Dictionary <string, SIPUserAgentConfiguration> userAgentConfigs = new Dictionary <string, SIPUserAgentConfiguration>();
if (userAgentConifgNode != null && userAgentConifgNode.ChildNodes.Count != 0)
{
foreach (XmlNode userAgentNode in userAgentConifgNode.SelectNodes("useragent"))
{
//if (userAgentNode.InnerText != null && userAgentNode.InnerText.Trim().Length > 0) {
int expiry = Convert.ToInt32(userAgentNode.Attributes.GetNamedItem("expiry").Value);
bool contactListSupported = (userAgentNode.Attributes.GetNamedItem("contactlists") != null) ? Convert.ToBoolean(userAgentNode.Attributes.GetNamedItem("contactlists").Value) : true;
string userAgent = userAgentNode.Attributes.GetNamedItem("agent").Value;
SIPUserAgentConfiguration userAgentConfig = new SIPUserAgentConfiguration(expiry, contactListSupported, userAgent);
if (userAgentConfig.UserAgentRegex != null && userAgentConfig.UserAgentRegex.Trim().Length > 0 && !userAgentConfigs.ContainsKey(userAgentConfig.UserAgentRegex))
{
logger.Debug("Added useragent config, useragent=" + userAgentConfig.UserAgentRegex + ", expiry=" + userAgentConfig.MaxAllowedExpiryTime + "s, contact lists=" + userAgentConfig.ContactListSupported + ".");
userAgentConfigs.Add(userAgentConfig.UserAgentRegex, userAgentConfig);
}
//}
}
}
return(userAgentConfigs);
}
catch (Exception excp) {
logger.Error("Exception ParseSIPUserAgentConfigurations. " + excp.Message);
return(null);
}
}
/// <summary>
/// Makes a decision on what the maximum allowed expiry is for a REGISTER request. Allows different expiry values to be accepted from different user agents.
/// This is useful as some user agents ignore the expiry value set by the server and setting a higher value for that user agent can stop the registrar
/// expiring it.
/// </summary>
/// <param name="userAgent">The useragent to get the maximum expiry for.</param>
/// <returns>The maximum expiry value that will be accepted.</returns>
private SIPUserAgentConfiguration GetUserAgentConfig(string userAgent)
{
SIPUserAgentConfiguration matchingUAConfig = null;
try {
if (m_userAgentConfigs != null && m_userAgentConfigs.Count > 0)
{
if (userAgent != null && userAgent.Trim().Length > 0)
{
foreach (string userAgentPattern in m_userAgentConfigs.Keys)
{
if (Regex.Match(userAgent, userAgentPattern, RegexOptions.IgnoreCase).Success)
{
matchingUAConfig = m_userAgentConfigs[userAgentPattern];
break;
}
}
}
}
return(matchingUAConfig);
}
catch (Exception excp) {
logger.Error("Exception GetUserAgentConfig. " + excp);
return(null);
}
}
public void GetCiscoExpiryUnitTest()
{
Console.WriteLine("--> " + System.Reflection.MethodBase.GetCurrentMethod().Name);
string registrarExpiryNode =
"<useragentconfigs>" +
" <useragent expiry='3600'>fring</useragent>" +
" <useragent expiry='300'>Cisco-CP7960G/8.0</useragent>" +
" <useragent expiry='113'>*</useragent>" +
" </useragentconfigs>";
XmlDocument regExpiryDom = new XmlDocument();
regExpiryDom.LoadXml(registrarExpiryNode);
SIPUserAgentConfigurationManager uaConfigManager = new SIPUserAgentConfigurationManager(regExpiryDom.DocumentElement);
SIPUserAgentConfiguration matchingUA = uaConfigManager.GetUserAgentConfig("Cisco-CP7960G/8.0");
Assert.IsNotNull(matchingUA, "A matching user agent entry was not found.");
Assert.IsTrue(matchingUA.MaxAllowedExpiryTime == 300, "The expiry value for the Cisco ua was incorrect.");
Console.WriteLine("---------------------------------");
}
public bool GetUserAgentContactListSupport(string userAgent)
{
SIPUserAgentConfiguration matchingConfig = GetUserAgentConfig(userAgent);
return((matchingConfig != null) ? matchingConfig.ContactListSupported : m_defaultContactListSupported);
}
public int GetMaxAllowedExpiry(string userAgent)
{
SIPUserAgentConfiguration matchingConfig = GetUserAgentConfig(userAgent);
return((matchingConfig != null) ? matchingConfig.MaxAllowedExpiryTime : m_defaultMaxExpiry);
}