在考虑了更多之后,我有一个解决方法给你。变通方法的基本思想是使用从 Route 派生的路由并将其直接添加到 RouteCollection。这样,我们通过的路由将不再被包裹在 HttpWebRoute 中。
RouteByPassing 处理程序用于解决另一个已知问题。希望这可以帮助。
public static class WebApiConfig
{
public static void Register(HttpConfiguration config)
{
config.Routes.MapHttpRoute(
name: "DefaultApi",
routeTemplate: "api/{controller}/{id}",
defaults: new { id = RouteParameter.Optional }
);
RouteTable.Routes.Add("test", new HttpDomainRoute(
domain: "{tenant}.auth10.com",
routeTemplate: "test",
defaults: new { controller = "Values", action = "GetTenant" }
));
config.MessageHandlers.Add(new RouteByPassingHandler());
}
}
public class RouteByPassingHandler : DelegatingHandler
{
protected override System.Threading.Tasks.Task<HttpResponseMessage> SendAsync(HttpRequestMessage request, System.Threading.CancellationToken cancellationToken)
{
HttpMessageInvoker invoker = new HttpMessageInvoker(new HttpControllerDispatcher(request.GetConfiguration()));
return invoker.SendAsync(request, cancellationToken);
}
}
public class HttpDomainRoute
: Route
{
private Regex domainRegex;
private Regex pathRegex;
public HttpDomainRoute(string domain, string routeTemplate, object defaults, object constraints = null)
: base(routeTemplate, new RouteValueDictionary(defaults), new RouteValueDictionary(constraints), new RouteValueDictionary(), HttpControllerRouteHandler.Instance)
{
this.Domain = domain;
}
public string Domain { get; set; }
public override RouteData GetRouteData(HttpContextBase context)
{
// Build regex
domainRegex = CreateRegex(this.Domain);
pathRegex = CreateRegex(this.Url);
// Request information
string requestDomain = context.Request.Headers["Host"];
if (!string.IsNullOrEmpty(requestDomain))
{
if (requestDomain.IndexOf(":") > 0)
{
requestDomain = requestDomain.Substring(0, requestDomain.IndexOf(":"));
}
}
else
{
requestDomain = context.Request.Url.Host;
}
string requestPath = context.Request.AppRelativeCurrentExecutionFilePath.Substring(2) + context.Request.PathInfo;
// Match domain and route
Match domainMatch = domainRegex.Match(requestDomain);
Match pathMatch = pathRegex.Match(requestPath);
// Route data
RouteData data = null;
if (domainMatch.Success && pathMatch.Success)
{
data = base.GetRouteData(context);
// Add defaults first
if (Defaults != null)
{
foreach (KeyValuePair<string, object> item in Defaults)
{
data.Values[item.Key] = item.Value;
}
}
// Iterate matching domain groups
for (int i = 1; i < domainMatch.Groups.Count; i++)
{
Group group = domainMatch.Groups[i];
if (group.Success)
{
string key = domainRegex.GroupNameFromNumber(i);
if (!string.IsNullOrEmpty(key) && !char.IsNumber(key, 0))
{
if (!string.IsNullOrEmpty(group.Value))
{
data.Values[key] = group.Value;
}
}
}
}
// Iterate matching path groups
for (int i = 1; i < pathMatch.Groups.Count; i++)
{
Group group = pathMatch.Groups[i];
if (group.Success)
{
string key = pathRegex.GroupNameFromNumber(i);
if (!string.IsNullOrEmpty(key) && !char.IsNumber(key, 0))
{
if (!string.IsNullOrEmpty(group.Value))
{
data.Values[key] = group.Value;
}
}
}
}
}
return data;
}
public override VirtualPathData GetVirtualPath(RequestContext requestContext, RouteValueDictionary values)
{
return base.GetVirtualPath(requestContext, RemoveDomainTokens(values));
}
private Regex CreateRegex(string source)
{
// Perform replacements
source = source.Replace("/", @"\/?");
source = source.Replace(".", @"\.?");
source = source.Replace("-", @"\-?");
source = source.Replace("{", @"(?<");
source = source.Replace("}", @">([a-zA-Z0-9_-]*))");
return new Regex("^" + source + "$");
}
private RouteValueDictionary RemoveDomainTokens(RouteValueDictionary values)
{
Regex tokenRegex = new Regex(@"({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?({[a-zA-Z0-9_-]*})*-?\.?\/?");
Match tokenMatch = tokenRegex.Match(Domain);
for (int i = 0; i < tokenMatch.Groups.Count; i++)
{
Group group = tokenMatch.Groups[i];
if (group.Success)
{
string key = group.Value.Replace("{", "").Replace("}", "");
if (values.ContainsKey(key))
values.Remove(key);
}
}
return values;
}
}
}