private static async Task OnRequestInterceptedAsync(RequestInterceptedEventArgs e)
{
Task interceptedTask = RequestInterceptedAsync?.Invoke(null, e);
if (interceptedTask != null)
{
await interceptedTask;
}
}
private static async Task HandleClientAsync(TcpClient client)
{
using (var local = new EavesNode(Certifier, client))
{
WebRequest request = await local.ReadRequestAsync().ConfigureAwait(false);
if (request == null)
{
return;
}
HttpContent requestContent = null;
var requestArgs = new RequestInterceptedEventArgs(request);
try
{
requestArgs.Content = requestContent = await local.ReadRequestContentAsync(request).ConfigureAwait(false);
await OnRequestInterceptedAsync(requestArgs).ConfigureAwait(false);
if (requestArgs.Cancel)
{
return;
}
request = requestArgs.Request;
if (requestArgs.Content != null)
{
await local.WriteRequestContentAsync(request, requestArgs.Content).ConfigureAwait(false);
}
}
finally
{
requestContent?.Dispose();
requestArgs.Content?.Dispose();
}
WebResponse response = null;
try { response = await request.GetResponseAsync().ConfigureAwait(false); }
catch (WebException ex) { response = ex.Response; }
catch (ProtocolViolationException)
{
response?.Dispose();
response = null;
}
if (response == null)
{
return;
}
if (request is FileWebRequest)
{
// Ensure this response is accepted by the client.
response.Headers["access-control-allow-origin"] = "*";
}
HttpContent responseContent = null;
var responseArgs = new ResponseInterceptedEventArgs(request, response);
try
{
responseArgs.Content = responseContent = EavesNode.ReadResponseContent(response);
await OnResponseInterceptedAsync(responseArgs).ConfigureAwait(false);
if (responseArgs.Cancel)
{
return;
}
await local.SendResponseAsync(responseArgs.Response, responseArgs.Content).ConfigureAwait(false);
}
finally
{
response.Dispose();
responseArgs.Response.Dispose();
responseContent?.Dispose();
responseArgs.Content?.Dispose();
}
}
}