chromium/net/cert/coalescing_cert_verifier.h

// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_CERT_COALESCING_CERT_VERIFIER_H_
#define NET_CERT_COALESCING_CERT_VERIFIER_H_

#include <stdint.h>

#include <map>
#include <memory>
#include <vector>

#include "net/base/net_export.h"
#include "net/cert/cert_verifier.h"

namespace net {

// CoalescingCertVerifier is a CertVerifier that keeps track of in-flight
// CertVerifier Verify() requests. If a new call to Verify() is started that
// matches the same parameters as an in-progress verification, the new
// Verify() call will be joined to the existing, in-progress verification,
// completing when it does. If no in-flight requests match, a new request to
// the underlying verifier will be started.
//
// If the underlying configuration changes, existing requests are allowed to
// complete, but any new requests will not be seen as matching, even if they
// share the same parameters. This ensures configuration changes propagate
// "immediately" for all new requests.
class NET_EXPORT CoalescingCertVerifier : public CertVerifier,
                                          public CertVerifier::Observer { … };

}  // namespace net

#endif  // NET_CERT_COALESCING_CERT_VERIFIER_H_