public async Task <ProxyStatus> PingAsync()
{
var request = new HttpClient.HttpRequest();
//request.SetUriFromString(this.config.Endpoint);
request.Options.EnsureSuccess = false;
request.Options.Timeout = 5000;
// The HTTP client uses cert. pinning, allowing self-signed certs
request.Options.AllowInsecureSslServer = true;
var response = await this.client.GetAsync(request);
var body = response.Content == null
? string.Empty
: Encoding.UTF8.GetString(response.Content);
var content = body.Length > 120
? body.Substring(0, 120) + "..."
: body;
return(new ProxyStatus
{
StatusCode = (int)response.StatusCode,
Message = content
});
}
// Prepare the request to send to the remote endpoint
private IHttpRequest BuildRequest(HttpRequest requestIn)
{
var requestOut = new HttpClient.HttpRequest();
// Forward HTTP request headers
foreach (var header in requestIn.Headers)
{
if (ExcludedRequestHeaders.Contains(header.Key.ToLowerInvariant()))
{
this.log.LogDebug("Ignoring request header", new { header.Key, header.Value });
continue;
}
this.log.LogDebug("Adding request header", new { header.Key, header.Value });
foreach (var value in header.Value)
{
requestOut.AddHeader(header.Key, value);
}
}
FeatureAvailability featureAvailability;
(feature, featureAvailability) = featuresManager.GetFeatureFromCookieOrHeader(requestIn);
if (featureAvailability == FeatureAvailability.Cookie)
{
// feature available in cookie, but not as http header. Add to outgoing http headers:
requestOut.AddHeader(FeaturesManager.HTTPHEADER_FEATURE, feature);
}
var urls = featuresManager.GetUrlFromFeatureConfiguration(feature, requestIn);
fromSchemeHostname = urls?.fromSchemeHostname;
fromUrl = urls?.fromUrl;
requestOut.SetUriFromString(urls?.toUrl ?? requestIn.GetEncodedUrl());
// Forward request payload
var method = requestIn.Method.ToUpperInvariant();
if (Microsoft.Azure.IoTSolutions.ReverseProxy.HttpClient.HttpClient.MethodsWithPayload.Contains(method))
{
requestOut.SetContent(this.GetRequestPayload(requestIn), requestIn.ContentType);
}
// Allow error codes without throwing an exception
requestOut.Options.EnsureSuccess = false;
// The HTTP client uses cert. pinning, allowing self-signed certs
requestOut.Options.AllowInsecureSslServer = true;
return(requestOut);
}
// Prepare the request to send to the remote endpoint
private IHttpRequest BuildRequest(HttpRequest requestIn, string toHostname)
{
var requestOut = new HttpClient.HttpRequest();
// Forward HTTP request headers
foreach (var header in requestIn.Headers)
{
if (ExcludedRequestHeaders.Contains(header.Key.ToLowerInvariant()))
{
this.log.Debug("Ignoring request header", () => new { header.Key, header.Value });
continue;
}
this.log.Debug("Adding request header", () => new { header.Key, header.Value });
foreach (var value in header.Value)
{
requestOut.AddHeader(header.Key, value);
}
}
var url = toHostname + requestIn.Path.Value + requestIn.QueryString;
this.log.Debug("URL", () => new { url });
requestOut.SetUriFromString(url);
// Forward request payload
var method = requestIn.Method.ToUpperInvariant();
if (HttpClient.HttpClient.MethodsWithPayload.Contains(method))
{
requestOut.SetContent(this.GetRequestPayload(requestIn), requestIn.ContentType);
}
// Allow error codes without throwing an exception
requestOut.Options.EnsureSuccess = false;
// The HTTP client uses cert. pinning, allowing self-signed certs
requestOut.Options.AllowInsecureSslServer = true;
return(requestOut);
}
