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/*
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
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* All rights reserved.
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* This component and the accompanying materials are made available
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* under the terms of "Eclipse Public License v1.0"
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* which accompanies this distribution, and is available
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* at the URL "http://www.eclipse.org/legal/epl-v10.html".
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*
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* Initial Contributors:
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* Nokia Corporation - initial contribution.
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*
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* Contributors:
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*
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* Description:
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*
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*/
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#include "fdesc.h"
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TInt CSockDescBase::Socket(RSocketServ& /*aSs*/, int /*family*/, int /*style*/, int /*protocol*/)
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{
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return KErrNotSupported;
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}
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TInt CSockDescBase::Fcntl(TUint anArg, TUint aCmd)
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{
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//fcntl supports only F_SETFL and F_GETFL for Non-Blocking I/O
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//If aCmd and anArg does not match these, return with Error
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TInt retVal = KErrNone;
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switch( aCmd )
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{
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case F_SETFL:
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{
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//Send the equivalent Flags of Symbian to RSocket
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TUint flags = iFcntlFlag;
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if( anArg & O_NONBLOCK )
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{
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retVal = iSocket.SetOpt(KSONonBlockingIO, KSOLSocket);
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flags |= O_NONBLOCK;
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}
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else
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{
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retVal = iSocket.SetOpt(KSOBlockingIO, KSOLSocket);
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flags &= ~O_NONBLOCK;
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}
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if (retVal == KErrNone)
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{
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retVal = iFcntlFlag = flags;
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}
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break;
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}
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case F_GETFL:
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{
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// Socket descriptors are always read/write
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iFcntlFlag |= O_RDWR;
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//Return fcntl flag
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retVal = iFcntlFlag;
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break;
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}
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default:
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retVal = KErrNotSupported;
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}
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return retVal;
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}
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TInt CSockDescBase::FStat(struct stat *st)
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{
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// I am a socket about which little is known
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st->st_mode = S_IFSOCK;
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st->st_blksize=0;
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return KErrNone;
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}
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TInt CSockDescBase::FinalClose()
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{
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iSocket.Close();
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iReadLock.Close();
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iWriteLock.Close();
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iIoctlLock.Close();
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return KErrNone;
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}
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void CSockDescBase::Read(TDes8& aBuf, TRequestStatus& aStatus)
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{
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TSockXfrLength len;
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TRequestStatus tempStatus;
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iSocket.RecvOneOrMore(aBuf, 0, tempStatus, len); // needs a completion which returns the length
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User::WaitForRequest(tempStatus);
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if (tempStatus.Int() != KErrNone)
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{
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Complete(aStatus, tempStatus.Int());
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}
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else
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{
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Complete(aStatus, len());
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}
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}
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void CSockDescBase::Write(TDes8& aBuf, TRequestStatus& aStatus)
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{
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TRequestStatus tempStatus;
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TInt bytesWritten = 0;
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TInt bufLength = aBuf.Length();
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TSockXfrLength len;
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do
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{
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iSocket.Send(aBuf.Mid(bytesWritten), 0, tempStatus, len);
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User::WaitForRequest(tempStatus);
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if (len() == 0)
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{
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break;
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}
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bytesWritten += len();
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} while (bytesWritten < bufLength);
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if (tempStatus.Int() != KErrNone)
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{
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Complete(aStatus, tempStatus.Int());
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}
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else if ((len() == 0) && (bytesWritten == 0))
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{
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Complete(aStatus, KErrWouldBlock);
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}
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else
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{
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//to do change request complete with actual length written when defect
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//is fixed
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Complete(aStatus, bytesWritten);
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}
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}
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void CSockDescBase::RecvFrom(TDes8& aDesc, TSockAddr& from, int flags, TRequestStatus& aStatus)
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{
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//Map the flags to the RSocket flags
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TUint rSockFlags = 0;
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if( flags & MSG_PEEK ) //Peek at incoming data
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rSockFlags |= KSockReadPeek;
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/* No equivalent flags avaialble in RSocket for
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MSG_OOB and MSG_WAITALL */
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TSockXfrLength len;
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TRequestStatus tempStatus;
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switch (iStyle)
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{
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case SOCK_STREAM:
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// recvfrom on a stream ignores the from address - get the peername
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if (from.Length())
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SockName(1,from);
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iSocket.RecvOneOrMore(aDesc,rSockFlags,tempStatus,len);
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break;
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case SOCK_SEQPACKET:
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// get the peername (as above)
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if (from.Length())
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SockName(1,from);
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iSocket.Recv(aDesc, rSockFlags, tempStatus);
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break;
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default: // including SOCK_RAW, SOCK_DGRAM
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// assume datagram, as per behavior of original stdlib code:
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iSocket.RecvFrom(aDesc,from,rSockFlags,tempStatus,len);
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}
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User::WaitForRequest(tempStatus);
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len = aDesc.Length();
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if (tempStatus.Int() != KErrNone)
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{
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if (tempStatus.Int() == KErrEof || tempStatus.Int() == KErrDisconnected)
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Complete(aStatus, len());
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else
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Complete(aStatus, tempStatus.Int());
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}
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else
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{
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Complete(aStatus, len());
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}
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}
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void CSockDescBase::SendTo(TDes8& aDesc, TSockAddr& to, int flags, TRequestStatus& aStatus)
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{
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TRequestStatus tempStatus;
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TSockXfrLength len;
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TBool sendflg = EFalse;
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if (to.Length()==0)
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{
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iSocket.Send(aDesc,flags,tempStatus,len);
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sendflg = ETrue;
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}
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else
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{
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if (isStream())
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Complete(aStatus,KErrNotSupported); // can't sendto a stream
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else
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{
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iSocket.SendTo(aDesc,to,flags,tempStatus,len);
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sendflg = ETrue;
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}
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}
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if(sendflg)
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{
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User::WaitForRequest(tempStatus);
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if (tempStatus.Int() != KErrNone)
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{
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if (tempStatus.Int() == KErrEof )
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Complete(aStatus, len());
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else
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Complete(aStatus, tempStatus.Int());
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}
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else
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{
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Complete(aStatus, len());
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}
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}
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}
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TInt CSockDescBase::CompletionStatus(TInt& aLength, TInt aStatus)
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{
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aLength = aStatus;
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if (aStatus >= 0)
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{
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return 0;
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}
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return aStatus;
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}
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TInt CSockDescBase::Poll(TUint aEvents)
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{
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TInt status = 0;
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TInt err = 0;
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TInt readyEvents = 0;
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err = iSocket.GetOpt(KSOSelectPoll, KSOLSocket, status);
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if (err != KErrNone)
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{
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// Poll should return any of the requested events.
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// In case of any error, the error will be set, and can be later checked by the descriptor.
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iPollErr = err;
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// For non-blocking socket, ensure to reset "iConnectInProgress" flag for a non-connected
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// socket on which a connection is pending.
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if(GetConnectionProgress())
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{
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SetConnectionProgress(EFalse);
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}
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// set all the events that has been requested for
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// This handles a scenario where connect fails( in loopback )
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// here poll should return all the events requested as ready
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// not KErrNone or failure value as returning KErrNone will indicate
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// no events are ready and notifyactivity will be used though the event has
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// completed
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if( aEvents & EReadyForReading )
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{
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readyEvents |= EReadyForReading;
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}
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if( aEvents & EReadyForWriting )
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{
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readyEvents |= EReadyForWriting;
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}
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if( aEvents & EAnyException )
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{
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readyEvents |= EAnyException;
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}
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return readyEvents;
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}
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if ((status & KSockSelectRead) && (aEvents & EReadyForReading))
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{
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readyEvents |= EReadyForReading;
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}
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if ((status & KSockSelectWrite) && (aEvents & EReadyForWriting))
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{
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readyEvents |= EReadyForWriting;
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}
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if (status & KSockSelectExcept)
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{
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if(GetConnectionProgress())
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{
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TBool setExceptFd = ETrue;
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// Some special checks for non-blocking sockets.
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if(aEvents & EReadyForWriting)
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{
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readyEvents |= EReadyForWriting;
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setExceptFd = EFalse;
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}
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if(aEvents & EReadyForReading)
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{
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readyEvents |= EReadyForReading;
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setExceptFd = EFalse;
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}
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if(setExceptFd && (aEvents & EAnyException))
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{
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readyEvents |= EAnyException;
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}
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}
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else
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{
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if(aEvents & EAnyException)
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{
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readyEvents |= EAnyException;
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}
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}
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}
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if(GetConnectionProgress() && readyEvents)
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{
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SetConnectionProgress(EFalse);
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}
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return readyEvents;
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}
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/* Register for notification of activity */
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TInt CSockDescBase::NotifyActivity(TUint aEvents, TRequestStatus& aRequest, TTimeIntervalMicroSeconds32 timeout)
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{
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if (timeout.Int())
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{
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TInt ret = iIoctlLock.Wait(timeout.Int());
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if (ret != KErrNone)
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{
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return KErrCompletion;
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}
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}
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else
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{
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iIoctlLock.Wait();
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}
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iSelectEvents() = 0;
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if (aEvents & EReadyForReading)
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{
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iSelectEvents() = KSockSelectRead;
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}
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if (aEvents & EReadyForWriting)
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{
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iSelectEvents() |= KSockSelectWrite;
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}
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if (aEvents & EAnyException)
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{
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iSelectEvents() |= KSockSelectExcept;
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}
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iSocket.Ioctl(KIOctlSelect, aRequest, &iSelectEvents, KSOLSocket);
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return KErrNone;
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}
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// -----------------------------------------------------------------------------
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// CSockDescBase::TweakWatchedEvents
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// Requests for socket behaviour specific additional events
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// -----------------------------------------------------------------------------
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//
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void CSockDescBase::TweakWatchedEvents(TUint& events)
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{
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if((events & EReadyForReading) || (events & EReadyForWriting))
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{
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// Handles scenario of select called with writefds, after a non blocking connect on a socket
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// as per connect specification, select with the writefds after connect should
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// set writefds, irrespective of if the connection is successful or failure
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// We request for an exception event, as in Symbian connect failure is
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// an exception
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if(GetConnectionProgress())
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{
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events |= EAnyException;
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}
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}
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}
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// -----------------------------------------------------------------------------
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// CSockDescBase::TweakReadyEvents
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// Prepares the socket behaviours specific output events
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// -----------------------------------------------------------------------------
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//
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TInt CSockDescBase::TweakReadyEvents(TInt errval)
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{
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TInt returnEvents = 0;
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if( errval >= KErrNone )
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{
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// This file descriptor is socket-like
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// SelectEvents will also signal ioctlLock.
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// This hack allows other threads to issue an ioctl on this socket now rather than later.
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const TUint events = GetSelectEvents();
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if (events & KSockSelectRead)
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{
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returnEvents |= EReadyForReading;
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}
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if (events & KSockSelectWrite)
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{
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returnEvents |= EReadyForWriting;
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}
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if (events & KSockSelectExcept)
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{
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// if it is a case of non blocking connect check for the flag
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// though the flag indicates connection is in progress, we come out of
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// waitforNrequest only after a event
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if(GetConnectionProgress())
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{
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returnEvents |= EReadyForReading;
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returnEvents |= EReadyForWriting;
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}
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else
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{
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returnEvents |= EAnyException;
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}
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}
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}
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else
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{
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if( GetConnectionProgress() )
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{
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// Dummy call to retrieve select events also unlocks the socket
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const TUint events = GetSelectEvents();
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// set all the events that has been requested for
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// This handles a scenario where connect fails( in loopback )
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// here all the events requested should be ready ready
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// Since PrepareOutputEvents is not aware of the events requested, all are
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// set as ready and it will be filteret in select
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returnEvents |= EReadyForWriting;
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returnEvents |= EReadyForReading;
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returnEvents |= EAnyException;
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}
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else
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{
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returnEvents |= EAnyException;
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}
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}
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return returnEvents;
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}
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void CSockDescBase::CancelNotify()
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{
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iSocket.CancelIoctl();
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iIoctlLock.Signal();
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}
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TInt CSockDescBase::Listen(TUint qSize)
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{
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return iSocket.Listen(qSize);
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}
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void CSockDescBase::ReadCancel()
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{
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iSocket.CancelRecv();
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}
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465 |
TInt CSockDescBase::ReadCompletion(TDes8& /*aBuf*/, TInt aStatus)
|
|
466 |
{
|
|
467 |
if(KErrNone == aStatus)
|
|
468 |
{
|
|
469 |
return iLength();
|
|
470 |
}
|
|
471 |
return aStatus;
|
|
472 |
}
|
|
473 |
|
|
474 |
void CSockDescBase::RecvFromCancel()
|
|
475 |
{
|
|
476 |
iSocket.CancelRecv();
|
|
477 |
}
|
|
478 |
|
|
479 |
void CSockDescBase::SendToCancel()
|
|
480 |
{
|
|
481 |
iSocket.CancelSend();
|
|
482 |
}
|
|
483 |
|
|
484 |
void CSockDescBase::WriteCancel()
|
|
485 |
{
|
|
486 |
iSocket.CancelWrite();
|
|
487 |
}
|
|
488 |
|
|
489 |
TInt CSockDescBase::SockName(int anEnd, TSockAddr& anAddr)
|
|
490 |
{
|
|
491 |
const TUint KBadFamily = 0xFF000000;
|
|
492 |
|
|
493 |
TUSockAddr *addr;
|
|
494 |
|
|
495 |
addr = (TUSockAddr*)&anAddr;
|
|
496 |
if (addr->iError != 0)
|
|
497 |
{
|
|
498 |
return addr->iError;
|
|
499 |
}
|
|
500 |
|
|
501 |
anAddr.SetFamily(KBadFamily);
|
|
502 |
if (anEnd==0)
|
|
503 |
iSocket.LocalName(anAddr);
|
|
504 |
else
|
|
505 |
iSocket.RemoteName(anAddr);
|
|
506 |
if (anAddr.Family()==KBadFamily)
|
|
507 |
return ENOTCONN; // assume that the call failed, but there is no way to find out why
|
|
508 |
return KErrNone;
|
|
509 |
}
|
|
510 |
|
|
511 |
void CSockDescBase::Shutdown(TUint aHow,TRequestStatus& aStatus)
|
|
512 |
{
|
|
513 |
RSocket::TShutdown how;
|
|
514 |
|
|
515 |
switch (aHow)
|
|
516 |
{
|
|
517 |
case SHUT_RD:
|
|
518 |
how = RSocket::EStopInput;
|
|
519 |
break;
|
|
520 |
case SHUT_WR:
|
|
521 |
how = RSocket::EStopOutput;
|
|
522 |
break;
|
|
523 |
case SHUT_RDWR:
|
|
524 |
how = RSocket::EImmediate;
|
|
525 |
break;
|
|
526 |
default:
|
|
527 |
Complete(aStatus,KErrArgument); // Invalid argument
|
|
528 |
return;
|
|
529 |
}
|
|
530 |
iSocket.Shutdown(how,aStatus);
|
|
531 |
return;
|
|
532 |
}
|