85 lines
2.8 KiB
C++
85 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_net_NullHttpTransaction_h
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#define mozilla_net_NullHttpTransaction_h
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#include "nsAHttpTransaction.h"
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#include "mozilla/Attributes.h"
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// This is the minimal nsAHttpTransaction implementation. A NullHttpTransaction
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// can be used to drive connection level semantics (such as SSL handshakes
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// tunnels) so that a nsHttpConnection becomes fully established in
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// anticipation of a real transaction needing to use it soon.
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class nsIHttpActivityObserver;
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namespace mozilla { namespace net {
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class nsAHttpConnection;
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class nsHttpConnectionInfo;
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class nsHttpRequestHead;
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// 6c445340-3b82-4345-8efa-4902c3b8805a
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#define NS_NULLHTTPTRANSACTION_IID \
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{ 0x6c445340, 0x3b82, 0x4345, {0x8e, 0xfa, 0x49, 0x02, 0xc3, 0xb8, 0x80, 0x5a }}
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class NullHttpTransaction : public nsAHttpTransaction
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(NS_NULLHTTPTRANSACTION_IID)
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_DECL_NSAHTTPTRANSACTION
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NullHttpTransaction(nsHttpConnectionInfo *ci,
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nsIInterfaceRequestor *callbacks,
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uint32_t caps);
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bool Claim();
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// Overload of nsAHttpTransaction methods
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bool IsNullTransaction() override final { return true; }
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NullHttpTransaction *QueryNullTransaction() override final { return this; }
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bool ResponseTimeoutEnabled() const override final {return true; }
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PRIntervalTime ResponseTimeout() override final
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{
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return PR_SecondsToInterval(15);
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}
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protected:
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virtual ~NullHttpTransaction();
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private:
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nsresult mStatus;
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protected:
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uint32_t mCaps;
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nsHttpRequestHead *mRequestHead;
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private:
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// mCapsToClear holds flags that should be cleared in mCaps, e.g. unset
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// NS_HTTP_REFRESH_DNS when DNS refresh request has completed to avoid
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// redundant requests on the network. The member itself is atomic, but
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// access to it from the networking thread may happen either before or
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// after the main thread modifies it. To deal with raciness, only unsetting
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// bitfields should be allowed: 'lost races' will thus err on the
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// conservative side, e.g. by going ahead with a 2nd DNS refresh.
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Atomic<uint32_t> mCapsToClear;
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bool mIsDone;
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bool mClaimed;
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protected:
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RefPtr<nsAHttpConnection> mConnection;
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nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
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RefPtr<nsHttpConnectionInfo> mConnectionInfo;
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nsCOMPtr<nsIHttpActivityObserver> mActivityDistributor;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(NullHttpTransaction, NS_NULLHTTPTRANSACTION_IID)
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} // namespace net
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} // namespace mozilla
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#endif // mozilla_net_NullHttpTransaction_h
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