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220 lines
10 KiB
C++
220 lines
10 KiB
C++
/* 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 nsAHttpConnection_h__
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#define nsAHttpConnection_h__
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#include "nsISupports.h"
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#include "nsAHttpTransaction.h"
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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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// called by a transaction to force a "read from network" iteration
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// even if not scheduled by socket associated with connection
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virtual nsresult ForceRecv() = 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 or set if a connection has been reused.
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virtual bool IsReused() = 0;
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virtual void DontReuse() = 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, uint32_t length) = 0;
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// Used to determine if the connection wants read events even though
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// it has not written out a transaction. Used when a connection has issued
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// a preamble such as a proxy ssl CONNECT sequence.
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virtual bool IsProxyConnectInProgress() = 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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// Cancel and reschedule transactions deeper than the current response.
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// Returns the number of canceled transactions.
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virtual uint32_t CancelPipeline(nsresult originalReason) = 0;
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// Read and write class of transaction that is carried on this connection
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virtual nsAHttpTransaction::Classifier Classification() = 0;
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virtual void Classify(nsAHttpTransaction::Classifier newclass) = 0;
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// The number of transaction bytes written out on this HTTP Connection, does
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// not count CONNECT tunnel setup
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virtual int64_t BytesWritten() = 0;
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// Update the callbacks used to provide security info. May be called on
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// any thread.
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virtual void SetSecurityCallbacks(nsIInterfaceRequestor* aCallbacks) = 0;
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};
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#define NS_DECL_NSAHTTPCONNECTION(fwdObject) \
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nsresult OnHeadersAvailable(nsAHttpTransaction *, nsHttpRequestHead *, nsHttpResponseHead *, bool *reset); \
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void CloseTransaction(nsAHttpTransaction *, nsresult); \
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nsresult TakeTransport(nsISocketTransport **, \
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nsIAsyncInputStream **, \
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nsIAsyncOutputStream **); \
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bool IsPersistent(); \
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bool IsReused(); \
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void DontReuse(); \
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nsresult PushBack(const char *, uint32_t); \
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nsHttpConnection *TakeHttpConnection(); \
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uint32_t CancelPipeline(nsresult originalReason); \
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nsAHttpTransaction::Classifier Classification(); \
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/* \
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Thes methods below have automatic definitions that just forward the \
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function to a lower level connection object \
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*/ \
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void GetConnectionInfo(nsHttpConnectionInfo **result) \
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{ \
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if (!(fwdObject)) { \
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*result = nullptr; \
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return; \
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} \
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return (fwdObject)->GetConnectionInfo(result); \
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} \
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void GetSecurityInfo(nsISupports **result) \
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{ \
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if (!(fwdObject)) { \
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*result = nullptr; \
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return; \
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} \
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return (fwdObject)->GetSecurityInfo(result); \
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} \
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nsresult ResumeSend() \
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{ \
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if (!(fwdObject)) \
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return NS_ERROR_FAILURE; \
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return (fwdObject)->ResumeSend(); \
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} \
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nsresult ResumeRecv() \
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{ \
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if (!(fwdObject)) \
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return NS_ERROR_FAILURE; \
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return (fwdObject)->ResumeRecv(); \
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} \
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nsresult ForceRecv() \
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{ \
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if (!(fwdObject)) \
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return NS_ERROR_FAILURE; \
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return (fwdObject)->ForceRecv(); \
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} \
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nsISocketTransport *Transport() \
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{ \
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if (!(fwdObject)) \
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return nullptr; \
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return (fwdObject)->Transport(); \
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} \
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bool IsProxyConnectInProgress() \
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{ \
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return (fwdObject)->IsProxyConnectInProgress(); \
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} \
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bool LastTransactionExpectedNoContent() \
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{ \
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return (fwdObject)->LastTransactionExpectedNoContent(); \
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} \
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void SetLastTransactionExpectedNoContent(bool val) \
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{ \
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return (fwdObject)->SetLastTransactionExpectedNoContent(val); \
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} \
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void Classify(nsAHttpTransaction::Classifier newclass) \
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{ \
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if (fwdObject) \
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return (fwdObject)->Classify(newclass); \
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} \
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int64_t BytesWritten() \
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{ return fwdObject ? (fwdObject)->BytesWritten() : 0; } \
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void SetSecurityCallbacks(nsIInterfaceRequestor* aCallbacks) \
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{ \
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if (fwdObject) \
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(fwdObject)->SetSecurityCallbacks(aCallbacks); \
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}
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#endif // nsAHttpConnection_h__
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