public override WebResourceResponse ShouldInterceptRequest(WebView view, IWebResourceRequest request)
{
try
{
Logger.Info($"Requested Url: {request.Url.ToString()}");
var urlToFetch = request.Url.ToString().Replace(Constants.BufferText, string.Empty);
var isHttpRequest = request.Url.Scheme == "https";
if (isHttpRequest && !urlToFetch.Contains("favicon"))
{
var requestHeaders = request.RequestHeaders;
if (requestHeaders.ContainsKey("Range"))
{
var options = new WebFetchOptions
{
Range = RequestHelpers.RangeStringToArray(requestHeaders["Range"])
};
var task = WebFetchService.FetchResourceAsync(urlToFetch, options);
var safeResponse = task.WaitAndUnwrapException();
var stream = new MemoryStream(safeResponse.Data);
var response = new WebResourceResponse(safeResponse.MimeType, "UTF-8", stream);
response.SetStatusCodeAndReasonPhrase(206, "Partial Content");
response.ResponseHeaders = new Dictionary <string, string>
{
{ "Accept-Ranges", "bytes" },
{ "content-type", safeResponse.MimeType },
{ "Content-Range", safeResponse.Headers["Content-Range"] },
{ "Content-Length", safeResponse.Headers["Content-Length"] },
};
return(response);
}
else
{
var safeResponse = WebFetchService.FetchResourceAsync(urlToFetch).Result;
var stream = new MemoryStream(safeResponse.Data);
var response = new WebResourceResponse(safeResponse.MimeType, "UTF-8", stream);
return(response);
}
}
}
catch (Exception ex)
{
Logger.Error(ex);
if (ex.InnerException != null)
{
using (var stream = new MemoryStream())
{
var urlToFetch = request.Url.ToString().Replace(Constants.BufferText, string.Empty);
var mimeType = MimeTypeMap.Singleton.GetMimeTypeFromExtension(urlToFetch) ?? "text/html";
var response = new WebResourceResponse(mimeType, "UTF-8", stream);
response.SetStatusCodeAndReasonPhrase(404, "Not Found");
return(response);
}
}
}
return(base.ShouldInterceptRequest(view, request));
}
private void UpdateReasonAndStatusCode()
{
//No-op on Android 4.5 and older
if (Android.OS.Build.VERSION.SdkInt > BuildVersionCodes.KitkatWatch)
{
//We cannot set ReasonPhrase and StatutCode separed on Android.
//Just using cached value when updating
_response.SetStatusCodeAndReasonPhrase(_statusCode, _reasonPhrase);
}
}
