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// Copyright (c) 2010 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef NET_BASE_SSL_NON_SENSITIVE_HOST_INFO_H
#define NET_BASE_SSL_NON_SENSITIVE_HOST_INFO_H
#include <string>
#include "base/ref_counted.h"
#include "net/base/completion_callback.h"
namespace net {
// SSLNonSensitiveHostInfo is an interface for fetching information about an
// SSL server. This information may be stored on disk so does not include keys
// or session information etc. Primarily it's intended for caching the server's
// certificates.
class SSLNonSensitiveHostInfo :
public base::RefCountedThreadSafe<SSLNonSensitiveHostInfo> {
public:
virtual ~SSLNonSensitiveHostInfo() { }
// WaitForDataReady returns OK if the fetch of the requested data has
// completed. Otherwise it returns ERR_IO_PENDING and will call |callback| on
// the current thread when ready.
//
// Only a single callback can be outstanding at a given time and, in the
// event that WaitForDataReady returns OK, it's the caller's responsibility
// to delete |callback|.
//
// |callback| may be NULL, in which case ERR_IO_PENDING may still be returned
// but, obviously, a callback will never be made.
virtual int WaitForDataReady(CompletionCallback* callback) = 0;
// data returns any host information once WaitForDataReady has indicated that
// the fetch has completed. In the event of an error, |data| returns an empty
// string.
virtual const std::string& data() const = 0;
// Set allows for the host information to be updated for future users. This
// is a fire and forget operation: the caller may drop its reference from
// this object and the store operation will still complete. This can only be
// called once WaitForDataReady has returned OK or called its callback.
virtual void Set(const std::string& new_data) = 0;
};
} // namespace net
#endif // NET_BASE_SSL_NON_SENSITIVE_HOST_INFO_H
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