public async Task <byte[]> RenderUrl(string url, HtmlRendererOptions htmlOptions = null,
PdfOptions pdfOptions = null)
{
async void OnPageRequest(object sender, RequestEventArgs args)
{
if (args.Request.IsNavigationRequest)
{
await args.Request.ContinueAsync(new Payload
{
Headers = htmlOptions.RequestHeaders
});
}
else
{
await args.Request.ContinueAsync();
}
}
await InitializeBrowser();
var page = await Browser.NewPageAsync();
if (htmlOptions?.RequestHeaders != null && htmlOptions.RequestHeaders.Count > 0)
{
await page.SetRequestInterceptionAsync(true);
page.Request += OnPageRequest;
}
var pdfData = await RunInternal(url, htmlOptions, pdfOptions, page).ContinueWith(t =>
{
if (t.IsCompletedSuccessfully)
{
return((object)t.Result);
}
return(t.Exception);
});
await page.CloseAsync();
await page.DisposeAsync();
if (htmlOptions?.RequestHeaders != null && htmlOptions.RequestHeaders.Count > 0)
{
page.Request -= OnPageRequest;
}
if (pdfData is byte[] result)
{
return(result);
}
if (pdfData is Exception ex)
{
throw ex;
}
throw new InvalidOperationException("Something went terribly wrong.");
}
private static async Task <byte[]> RunInternal(string url, HtmlRendererOptions htmlOptions,
PdfOptions pdfOptions, Page page)
{
await(htmlOptions?.RunBeforePageLoad?.Invoke(page) ?? Task.CompletedTask);
await page.GoToAsync(url);
await(htmlOptions?.RunBeforePdf?.Invoke(page) ?? Task.CompletedTask);
var pdfData = pdfOptions == null ? await page.PdfDataAsync() : await page.PdfDataAsync(pdfOptions);
await(htmlOptions?.RunAfterPdf?.Invoke(page) ?? Task.CompletedTask);
return(pdfData);
}
public async Task <byte[]> RenderHtml(string html, HtmlRendererOptions htmlOptions = null,
PdfOptions pdfOptions = null)
{
await InitializeBrowser();
var page = await Browser.NewPageAsync();
await(htmlOptions?.RunBeforePageLoad?.Invoke(page) ?? Task.CompletedTask);
await page.SetContentAsync(html);
await(htmlOptions?.RunBeforePdf?.Invoke(page) ?? Task.CompletedTask);
var pdfData = pdfOptions == null ? await page.PdfDataAsync() : await page.PdfDataAsync(pdfOptions);
await(htmlOptions?.RunAfterPdf?.Invoke(page) ?? Task.CompletedTask);
await page.CloseAsync();
await page.DisposeAsync();
return(pdfData);
}