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62 lines
2.4 KiB
C
62 lines
2.4 KiB
C
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// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_SPDY_CHROMIUM_HTTP2_PUSH_PROMISE_INDEX_H_
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#define NET_SPDY_CHROMIUM_HTTP2_PUSH_PROMISE_INDEX_H_
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#include <map>
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#include <vector>
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#include "base/macros.h"
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#include "base/memory/weak_ptr.h"
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#include "net/base/net_export.h"
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#include "net/spdy/chromium/spdy_session_key.h"
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#include "url/gurl.h"
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namespace net {
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class SpdySession;
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// This class manages cross-origin unclaimed pushed streams (push promises) from
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// the receipt of PUSH_PROMISE frame until they are matched to a request. Each
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// SpdySessionPool owns one instance of this class, which then allows requests
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// to be matched with a pushed stream regardless of which HTTP/2 connection the
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// stream is on.
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// Only pushed streams with cryptographic schemes (for example, https) are
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// allowed to be shared across connections. Non-cryptographic scheme pushes
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// (for example, http) are fully managed within each SpdySession.
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class NET_EXPORT Http2PushPromiseIndex {
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public:
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Http2PushPromiseIndex();
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~Http2PushPromiseIndex();
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// Returns a session with |key| that has an unclaimed push stream for |url| if
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// such exists. Returns nullptr otherwise.
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base::WeakPtr<SpdySession> Find(const SpdySessionKey& key,
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const GURL& url) const;
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// (Un)registers a SpdySession with an unclaimed pushed stream for |url|.
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void RegisterUnclaimedPushedStream(const GURL& url,
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base::WeakPtr<SpdySession> spdy_session);
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void UnregisterUnclaimedPushedStream(const GURL& url,
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SpdySession* spdy_session);
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private:
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typedef std::vector<base::WeakPtr<SpdySession>> WeakSessionList;
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typedef std::map<GURL, WeakSessionList> UnclaimedPushedStreamMap;
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// A multimap of all SpdySessions that have an unclaimed pushed stream for a
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// GURL. SpdySession must unregister its streams before destruction,
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// therefore all weak pointers must be valid. A single SpdySession can only
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// have at most one pushed stream for each GURL, but it is possible that
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// multiple SpdySessions have pushed streams for the same GURL.
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UnclaimedPushedStreamMap unclaimed_pushed_streams_;
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DISALLOW_COPY_AND_ASSIGN(Http2PushPromiseIndex);
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};
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} // namespace net
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#endif // NET_SPDY_CHROMIUM_HTTP2_PUSH_PROMISE_INDEX_H_
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