public override async Task Invoke(IOwinContext context)
{
var config = PrerenderConfig.GetCurrent();
var requestParams = new RequestParams
{
RequestUri = context.Request.Uri,
UserAgent = context.Request.Headers["user-agent"]
};
if (Utility.IsRequestShouldBePrerendered(requestParams, config))
{
var rendererConfig = new WebConfigPrerenderServiceConfiguration(config);
var renderer = new SnapshotRenderer(rendererConfig);
var snapshotUrl = Utility.GetSnapshotUrl(context.Request.Uri);
//render page html
PrerenderResult response;
try
{
response = await renderer.RenderPage(snapshotUrl);
}
catch (WebException e)
{
context.Response.Write(string.Format("Failed to prerender request '{0}'. Error message: '{1}'. Stack trace: '{2}'", snapshotUrl, e.Message, e.StackTrace));
context.Response.StatusCode = 500;
return;
}
await context.Response.WriteAsync(response.Content);
context.Response.ContentType = "text/html";
context.Response.StatusCode = (int)response.StatusCode;
}
else
{
await Next.Invoke(context);
}
}
public void Init()
{
_renderer = new SnapshotRenderer(new TestPrerendererConfiguration());
}