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163 lines
6.7 KiB
C++
163 lines
6.7 KiB
C++
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Darin Fisher <darin@netscape.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsAHttpConnection_h__
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#define nsAHttpConnection_h__
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#include "nsISupports.h"
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class nsAHttpTransaction;
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class nsHttpRequestHead;
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class nsHttpResponseHead;
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class nsHttpConnectionInfo;
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class nsHttpConnection;
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class nsISocketTransport;
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class nsIAsyncInputStream;
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class nsIAsyncOutputStream;
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//-----------------------------------------------------------------------------
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// Abstract base class for a HTTP connection
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//-----------------------------------------------------------------------------
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class nsAHttpConnection : public nsISupports
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{
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public:
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//-------------------------------------------------------------------------
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// NOTE: these methods may only be called on the socket thread.
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//-------------------------------------------------------------------------
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//
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// called by a transaction when the response headers have all been read.
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// the connection can force the transaction to reset it's response headers,
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// and prepare for a new set of response headers, by setting |*reset=TRUE|.
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//
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// @return failure code to close the transaction.
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//
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virtual nsresult OnHeadersAvailable(nsAHttpTransaction *,
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nsHttpRequestHead *,
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nsHttpResponseHead *,
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bool *reset) = 0;
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//
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// called by a transaction to resume either sending or receiving data
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// after a transaction returned NS_BASE_STREAM_WOULD_BLOCK from its
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// ReadSegments/WriteSegments methods.
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//
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virtual nsresult ResumeSend() = 0;
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virtual nsresult ResumeRecv() = 0;
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// After a connection has had ResumeSend() called by a transaction,
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// and it is ready to write to the network it may need to know the
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// transaction that has data to write. This is only an issue for
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// multiplexed protocols like SPDY - plain HTTP or pipelined HTTP
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// implicitly have this information in a 1:1 relationship with the
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// transaction(s) they manage.
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virtual void TransactionHasDataToWrite(nsAHttpTransaction *)
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{
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// by default do nothing - only multiplexed protocols need to overload
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return;
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}
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//
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// called by the connection manager to close a transaction being processed
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// by this connection.
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//
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// @param transaction
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// the transaction being closed.
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// @param reason
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// the reason for closing the transaction. NS_BASE_STREAM_CLOSED
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// is equivalent to NS_OK.
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//
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virtual void CloseTransaction(nsAHttpTransaction *transaction,
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nsresult reason) = 0;
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// get a reference to the connection's connection info object.
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virtual void GetConnectionInfo(nsHttpConnectionInfo **) = 0;
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// get the transport level information for this connection. This may fail
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// if it is in use.
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virtual nsresult TakeTransport(nsISocketTransport **,
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nsIAsyncInputStream **,
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nsIAsyncOutputStream **) = 0;
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// called by a transaction to get the security info from the socket.
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virtual void GetSecurityInfo(nsISupports **) = 0;
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// called by a transaction to determine whether or not the connection is
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// persistent... important in determining the end of a response.
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virtual bool IsPersistent() = 0;
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// called to determine if a connection has been reused.
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virtual bool IsReused() = 0;
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// called by a transaction when the transaction reads more from the socket
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// than it should have (eg. containing part of the next pipelined response).
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virtual nsresult PushBack(const char *data, PRUint32 length) = 0;
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// Used by a transaction to manage the state of previous response bodies on
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// the same connection and work around buggy servers.
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virtual bool LastTransactionExpectedNoContent() = 0;
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virtual void SetLastTransactionExpectedNoContent(bool) = 0;
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// Transfer the base http connection object along with a
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// reference to it to the caller.
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virtual nsHttpConnection *TakeHttpConnection() = 0;
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// Get the nsISocketTransport used by the connection without changing
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// references or ownership.
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virtual nsISocketTransport *Transport() = 0;
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};
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#define NS_DECL_NSAHTTPCONNECTION \
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nsresult OnHeadersAvailable(nsAHttpTransaction *, nsHttpRequestHead *, nsHttpResponseHead *, bool *reset); \
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nsresult ResumeSend(); \
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nsresult ResumeRecv(); \
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void CloseTransaction(nsAHttpTransaction *, nsresult); \
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void GetConnectionInfo(nsHttpConnectionInfo **); \
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nsresult TakeTransport(nsISocketTransport **, \
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nsIAsyncInputStream **, \
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nsIAsyncOutputStream **); \
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void GetSecurityInfo(nsISupports **); \
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bool IsPersistent(); \
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bool IsReused(); \
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nsresult PushBack(const char *, PRUint32); \
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bool LastTransactionExpectedNoContent(); \
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void SetLastTransactionExpectedNoContent(bool); \
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nsHttpConnection *TakeHttpConnection(); \
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nsISocketTransport *Transport();
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#endif // nsAHttpConnection_h__
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