[API categories](API-categories.md) | [API index](API-index.md) # WebRequestClient (interface) See [WebRequest](WebRequest.md).CreateWebRequest(). You have to keep a strong reference to the [WebRequest](WebRequest.md) object during the request, otherwise it gets destroyed and the [WebRequestClient](WebRequestClient.md) callbacks won't get called. Table of contents: * [Notes](#notes) * [Callbacks](#callbacks) * [OnUploadProgress](#onuploadprogress) * [OnDownloadProgress](#ondownloadprogress) * [OnDownloadData](#ondownloaddata) * [OnRequestComplete](#onrequestcomplete) ## Notes Callbacks available in upstream CEF, but not yet exposed in CEF Python: * GetAuthCredentials ## Callbacks The methods of this class will be called on the same thread that created the request unless otherwise documented. ### OnUploadProgress | Parameter | Type | | --- | --- | | web_request | [WebRequest](WebRequest.md) | | current | long | | total | long | | __Return__ | void | Notifies the client of upload progress. |current| denotes the number of bytes sent so far and |total| is the total size of uploading data (or -1 if chunked upload is enabled). This method will only be called if the `ReportUploadProgress` flag is set on the request (see [Request](Request.md).GetFlags() and SetFlags()) ### OnDownloadProgress | Parameter | Type | | --- | --- | | web_request | [WebRequest](WebRequest.md) | | current | long | | total | long | | __Return__ | void | Notifies the client of download progress. |current| denotes the number of bytes received up to the call and |total| is the expected total size of the response (or -1 if not determined). ### OnDownloadData | Parameter | Type | | --- | --- | | web_request | [WebRequest](WebRequest.md) | | data | string | | __Return__ | void | Called when some part of the response is read. |data| contains the current bytes received since the last call. This method will not be called if the `NoDownloadData` flag is set on the request (see [Request](Request.md).GetFlags() and SetFlags()). ### OnRequestComplete | Parameter | Type | | --- | --- | | web_request | [WebRequest](WebRequest.md) | | __Return__ | void | Notifies the client that the request has completed. Use the [WebRequest](WebRequest.md).GetRequestStatus() method to determine if the request was successful or not.