private bool TrySetBasicAuthToken(HttpRequestMessage request)
{
NetworkCredential credential = _credentials.GetCredential(request.RequestUri, "Basic");
if (credential == null)
{
return(false);
}
request.Headers.Authorization = new AuthenticationHeaderValue("Basic", BasicAuthenticationHelper.GetBasicTokenForCredential(credential));
return(true);
}
protected internal override async Task <HttpResponseMessage> SendAsync(HttpRequestMessage request, CancellationToken cancellationToken)
{
Uri proxyUri = null;
try
{
if (!_proxy.IsBypassed(request.RequestUri))
{
proxyUri = _proxy.GetProxy(request.RequestUri);
}
}
catch (Exception)
{
// Eat any exception from the IWebProxy and just treat it as no proxy.
// TODO: This seems a bit questionable, but it's what the tests expect
}
if (proxyUri == null)
{
return(await _innerHandler.SendAsync(request, cancellationToken).ConfigureAwait(false));
}
if (proxyUri.Scheme != "http")
{
throw new InvalidOperationException($"invalid scheme {proxyUri.Scheme} for proxy");
}
if (request.RequestUri.Scheme == "https")
{
// TODO: Implement SSL tunneling through proxy
throw new NotImplementedException("no support for SSL tunneling through proxy");
}
HttpConnection connection = await GetOrCreateConnection(request, proxyUri).ConfigureAwait(false);
HttpResponseMessage response = await connection.SendAsync(request, cancellationToken).ConfigureAwait(false);
// Handle proxy authentication
if (response.StatusCode == HttpStatusCode.ProxyAuthenticationRequired &&
_proxy.Credentials != null)
{
foreach (AuthenticationHeaderValue h in response.Headers.ProxyAuthenticate)
{
// We only support Basic auth, ignore others
if (h.Scheme == "Basic")
{
NetworkCredential credential = _proxy.Credentials.GetCredential(proxyUri, "Basic");
if (credential != null)
{
response.Dispose();
request.Headers.ProxyAuthorization = new AuthenticationHeaderValue("Basic",
BasicAuthenticationHelper.GetBasicTokenForCredential(credential));
connection = await GetOrCreateConnection(request, proxyUri).ConfigureAwait(false);
response = await connection.SendAsync(request, cancellationToken).ConfigureAwait(false);
}
break;
}
}
}
return(response);
}
private async Task <HttpResponseMessage> SendWithProxyAsync(
Uri proxyUri, HttpRequestMessage request, CancellationToken cancellationToken)
{
if (proxyUri.Scheme != UriScheme.Http)
{
throw new InvalidOperationException($"invalid scheme {proxyUri.Scheme} for proxy");
}
if (request.RequestUri.Scheme == UriScheme.Https)
{
// TODO #21452: Implement SSL tunneling through proxy
throw new NotImplementedException("no support for SSL tunneling through proxy");
}
HttpConnection connection = await GetOrCreateConnection(request, proxyUri).ConfigureAwait(false);
HttpResponseMessage response = await connection.SendAsync(request, cancellationToken).ConfigureAwait(false);
// Handle proxy authentication
if (response.StatusCode == HttpStatusCode.ProxyAuthenticationRequired)
{
foreach (AuthenticationHeaderValue h in response.Headers.ProxyAuthenticate)
{
// We only support Basic auth, ignore others
const string Basic = "Basic";
if (h.Scheme == Basic)
{
NetworkCredential credential =
_proxy.Credentials?.GetCredential(proxyUri, Basic) ??
_defaultCredentials?.GetCredential(proxyUri, Basic);
if (credential != null)
{
response.Dispose();
request.Headers.ProxyAuthorization = new AuthenticationHeaderValue(Basic,
BasicAuthenticationHelper.GetBasicTokenForCredential(credential));
connection = await GetOrCreateConnection(request, proxyUri).ConfigureAwait(false);
response = await connection.SendAsync(request, cancellationToken).ConfigureAwait(false);
}
break;
}
}
}
return(response);
}