/// <summary>
/// Gets a rule matching the given request URI.
/// </summary>
/// <param name="requestUri">The request URI to get a matching rule for.</param>
/// <param name="rules">The rule collection to use when matching.</param>
/// <returns>A matching rule, or null if none was found.</returns>
public virtual HttpRedirectRuleMatch Match(Uri requestUri, IEnumerable<HttpRedirectRuleElement> rules)
{
if (requestUri == null)
{
throw new ArgumentNullException("requestUri", "requestUrl cannot be null.");
}
HttpRedirectRuleMatch ruleMatch = null;
string uriValue = requestUri.ToString();
if (rules != null)
{
foreach (var rule in rules)
{
Match match = Regex.Match(uriValue, rule.Pattern, RegexOptions.IgnoreCase);
if (match.Success)
{
ruleMatch = new HttpRedirectRuleMatch(rule, match);
break;
}
}
}
return ruleMatch;
}
/// <summary>
/// Redirects the given HTTP context to the redirect result of the given rule match.
/// </summary>
/// <param name="httpContext">The HTTP context to redirect.</param>
/// <param name="ruleMatch">The rule match to redirect with.</param>
public virtual void RedirectContext(HttpContextBase httpContext, HttpRedirectRuleMatch ruleMatch)
{
if (httpContext == null)
{
throw new ArgumentNullException("httpContext", "httpContext cannot be null.");
}
if (ruleMatch == null)
{
throw new ArgumentNullException("ruleMatch", "rule cannot be null.");
}
if (!String.IsNullOrEmpty(ruleMatch.RedirectResult))
{
httpContext.Response.Clear();
httpContext.Response.StatusCode = ruleMatch.Rule.RedirectType == HttpRedirectType.Permanent ? 301 : 302;
httpContext.Response.AddHeader("Location", ruleMatch.RedirectResult);
httpContext.Response.End();
}
}