protected override bool ProcessRequest(CefRequest request, CefSchemeHandlerCallback callback)
{
var urlString = request.GetURL();
string errorMessage = null;
int errorStatus = 0;
string errorStatusText = null;
try
{
var uri = new Uri(urlString);
var path = uri.Host + uri.AbsolutePath; // ignore host
var asm = typeof(ClientSchemeHandler).Assembly;
var resPrefix = "CefGlue.Client.Resources.";
// convert path to resource name
var parts = path.Split('/');
for (var i = 0; i < parts.Length-1; i++)
{
var filename = Path.GetFileNameWithoutExtension(parts[i]);
var extension = Path.GetExtension(parts[i]);
parts[i] = filename.Replace(".", "._").Replace('-', '_') + extension;
}
var resName = resPrefix + string.Join(".", parts);
this.stream = asm.GetManifestResourceStream(resName);
if (this.stream != null)
{
// found
this.responseLength = -1;
this.status = 200;
this.statusText = "OK";
this.mimeType = GetMimeTypeFromUriSuffix(path);
callback.HeadersAvailable();
return true;
}
}
catch (Exception ex)
{
errorStatus = 500;
errorStatusText = "Internal Error";
errorMessage = "<!doctype html><html><body><h1>Internal Error!</h1><pre>" + ex.ToString() + "</pre></body></html>";
}
// not found or error while processing request
errorMessage = errorMessage ?? "<!doctype html><html><body><h1>Not Found!</h1><p>The requested url [" + urlString + "] not found!</p></body></html>";
var bytes = Encoding.UTF8.GetBytes(errorMessage);
this.stream = new MemoryStream(bytes, false);
this.responseLength = -1;
this.status = errorStatus != 0 ? errorStatus : 404;
this.statusText = errorStatusText ?? "Not Found";
this.mimeType = "text/html";
callback.HeadersAvailable();
return true;
}
/// <summary>
/// Create a new CefWebUrlRequest object.
/// </summary>
public static CefWebUrlRequest Create(CefRequest request, CefWebUrlRequestClient client)
{
return CefWebUrlRequest.From(
NativeMethods.cef_web_urlrequest_create(
request.GetNativePointerAndAddRef(),
client.GetNativePointerAndAddRef()
)
);
}
/// <summary> /// Return a new scheme handler instance to handle the request. /// |browser| will be the browser window that initiated the request. /// If the request was initiated using the CefWebURLRequest API |browser| will be NULL. /// </summary> protected abstract CefSchemeHandler Create(CefBrowser browser, string schemeName, CefRequest request);
/// <summary> /// Begin processing the request. /// /// To handle the request return true and call HeadersAvailable() once the response header information is /// available (HeadersAvailable() can also be called from inside this /// method if header information is available immediately). /// /// To cancel the request return false. /// </summary> protected abstract bool ProcessRequest(CefRequest request, CefSchemeHandlerCallback callback);
/// <summary> /// Return a new scheme handler instance to handle the request. /// |browser| will be the browser window that initiated the request. /// If the request was initiated using the CefWebURLRequest API |browser| will be NULL. /// </summary> protected abstract CefSchemeHandler Create(CefBrowser browser, string schemeName, CefRequest request);
/// <summary>
/// Notifies the client that the request has been redirected and provides a chance to change the request parameters.
/// </summary>
protected virtual void OnRedirect(CefWebUrlRequest requester, CefRequest request, CefResponse response)
{
}
/// <summary>
/// Create a new CefRequest object.
/// </summary>
public static CefRequest Create()
{
return(CefRequest.From(
NativeMethods.cef_request_create()
));
}
/// <summary>
/// Load the request represented by the |request| object.
/// </summary>
public void LoadRequest(CefRequest request)
{
cef_frame_t.invoke_load_request(this.ptr, request.GetNativePointerAndAddRef());
}
/// <summary>
/// Load the request represented by the |request| object.
/// </summary>
public void LoadRequest(CefRequest request)
{
cef_frame_t.invoke_load_request(this.ptr, request.GetNativePointerAndAddRef());
}
/// <summary>
/// Called on the UI thread before browser navigation.
/// Return true to cancel the navigation
/// or false to allow the navigation to proceed.
/// </summary>
protected virtual bool OnBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, CefHandlerNavType navType, bool isRedirect)
{
return(false);
}
/// <summary>
/// Called on the IO thread before a resource is loaded.
/// To allow the resource to load normally return false.
/// To redirect the resource to a new url populate the |redirectUrl| value and return false.
/// To specify data for the resource return a CefStream object in |resourceStream|,
/// use the |response| object to set mime type, HTTP status code and optional header values, and return false.
/// To cancel loading of the resource return true.
/// Any modifications to |request| will be observed.
/// If the URL in |request| is changed and |redirectUrl| is also set, the URL in |request| will be used.
/// </summary>
protected virtual bool OnBeforeResourceLoad(CefBrowser browser, CefRequest request, out string redirectUrl, out CefStreamReader resourceStream, CefResponse response, int loadFlags)
{
redirectUrl = null;
resourceStream = null;
return(false);
}
/// <summary> /// Begin processing the request. /// /// To handle the request return true and call HeadersAvailable() once the response header information is /// available (HeadersAvailable() can also be called from inside this /// method if header information is available immediately). /// /// To cancel the request return false. /// </summary> protected abstract bool ProcessRequest(CefRequest request, CefSchemeHandlerCallback callback);
protected override CefSchemeHandler Create(CefBrowser browser, string schemeName, CefRequest request)
{
return new ClientSchemeHandler();
}
/// <summary>
/// Called on the IO thread before a resource is loaded.
/// To allow the resource to load normally return false.
/// To redirect the resource to a new url populate the |redirectUrl| value and return false.
/// To specify data for the resource return a CefStream object in |resourceStream|,
/// use the |response| object to set mime type, HTTP status code and optional header values, and return false.
/// To cancel loading of the resource return true.
/// Any modifications to |request| will be observed.
/// If the URL in |request| is changed and |redirectUrl| is also set, the URL in |request| will be used.
/// </summary>
protected virtual bool OnBeforeResourceLoad(CefBrowser browser, CefRequest request, out string redirectUrl, out CefStreamReader resourceStream, CefResponse response, int loadFlags)
{
redirectUrl = null;
resourceStream = null;
return false;
}
/// <summary>
/// Called on the UI thread before browser navigation.
/// Return true to cancel the navigation
/// or false to allow the navigation to proceed.
/// </summary>
protected virtual bool OnBeforeBrowse(CefBrowser browser, CefFrame frame, CefRequest request, CefHandlerNavType navType, bool isRedirect)
{
return false;
}
