/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ /** * This class allows you to prefix an existing nsIAsyncInputStream * with a preloaded block of data known at construction time by wrapping the * two data sources into a new nsIAsyncInputStream. Readers of the new * stream initially see the preloaded data and when that has been exhausted * they automatically read from the wrapped stream. * * It is used by nsHttpConnection when it has over buffered while reading from * the HTTP input socket and accidentally consumed data that belongs to * a different protocol via the HTTP Upgrade mechanism. That over-buffered * data is preloaded together with the input socket to form the new input socket * given to the new protocol handler. */ #ifndef nsPreloadedStream_h__ #define nsPreloadedStream_h__ #include "nsIAsyncInputStream.h" #include "nsCOMPtr.h" #include "mozilla/Attributes.h" namespace mozilla { namespace net { class nsPreloadedStream final : public nsIAsyncInputStream { public: NS_DECL_THREADSAFE_ISUPPORTS NS_DECL_NSIINPUTSTREAM NS_DECL_NSIASYNCINPUTSTREAM nsPreloadedStream(nsIAsyncInputStream *aStream, const char *data, uint32_t datalen); private: ~nsPreloadedStream(); nsCOMPtr<nsIAsyncInputStream> mStream; char *mBuf; uint32_t mOffset; uint32_t mLen; }; } // namespace net } // namespace mozilla #endif