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//------------------------------------------------------------------------------
// <copyright file="RestHandlerFactory.cs" company="Microsoft">
// Copyright (c) Microsoft Corporation. All rights reserved.
// </copyright>
//------------------------------------------------------------------------------
namespace System.Web.Script.Services {
internal class RestHandlerFactory : IHttpHandlerFactory {
internal const string ClientProxyRequestPathInfo = "/js";
internal const string ClientDebugProxyRequestPathInfo = "/jsdebug";
public virtual IHttpHandler GetHandler(HttpContext context, string requestType, string url, string pathTranslated) {
if (context == null) {
throw new ArgumentNullException("context");
}
if (IsClientProxyRequest(context.Request.PathInfo)) {
// It's a request for client side proxies
return new RestClientProxyHandler();
}
else {
// The request is an actual call to a server method
return RestHandler.CreateHandler(context);
}
}
public virtual void ReleaseHandler(IHttpHandler handler) {
}
// Detects if this is a request we want to intercept, i.e. invocation or proxy request
internal static bool IsRestRequest(HttpContext context) {
return IsRestMethodCall(context.Request) || IsClientProxyRequest(context.Request.PathInfo);
}
// Detects if this is a method invocation, i.e. webservice call or page method call
internal static bool IsRestMethodCall(HttpRequest request) {
return
!String.IsNullOrEmpty(request.PathInfo) &&
(request.ContentType.StartsWith("application/json;", StringComparison.OrdinalIgnoreCase) ||
string.Equals(request.ContentType, "application/json", StringComparison.OrdinalIgnoreCase));
}
internal static bool IsClientProxyDebugRequest(string pathInfo) {
return string.Equals(pathInfo, ClientDebugProxyRequestPathInfo, StringComparison.OrdinalIgnoreCase);
}
internal static bool IsClientProxyRequest(string pathInfo) {
return (string.Equals(pathInfo, ClientProxyRequestPathInfo, StringComparison.OrdinalIgnoreCase) ||
IsClientProxyDebugRequest(pathInfo));
}
}
}
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