From 5f8de423f190bbb79a62f804151bc24824fa32d8 Mon Sep 17 00:00:00 2001 From: "Matt A. Tobin" Date: Fri, 2 Feb 2018 04:16:08 -0500 Subject: Add m-esr52 at 52.6.0 --- netwerk/base/nsPreloadedStream.h | 52 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) create mode 100644 netwerk/base/nsPreloadedStream.h (limited to 'netwerk/base/nsPreloadedStream.h') diff --git a/netwerk/base/nsPreloadedStream.h b/netwerk/base/nsPreloadedStream.h new file mode 100644 index 000000000..afdc960e7 --- /dev/null +++ b/netwerk/base/nsPreloadedStream.h @@ -0,0 +1,52 @@ +/* -*- 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 mStream; + + char *mBuf; + uint32_t mOffset; + uint32_t mLen; +}; + +} // namespace net +} // namespace mozilla + +#endif -- cgit v1.2.3