a88c31639b
* Passes conformance and functional tests. * Builds with GCC 4.4 compiler. Signed-off by: lpleahy git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@12497 6f19259b-4bc3-4df7-8a09-765794883524
96 lines
3.0 KiB
C
96 lines
3.0 KiB
C
/** @file
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Implement the connect API.
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Copyright (c) 2011, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <SocketInternals.h>
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/**
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Connect to a remote system via the network.
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The connect routine attempts to establish a connection to a
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socket on the local or remote system using the specified address.
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There are three states associated with a connection:
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<ul>
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<li>Not connected</li>
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<li>Connection in progress</li>
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<li>Connected</li>
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</ul>
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In the initial "Not connected" state, calls to connect start the connection
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processing and update the state to "Connection in progress". During
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the "Connection in progress" state, connect polls for connection completion
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and moves the state to "Connected" after the connection is established.
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Note that these states are only visible when the file descriptor is marked
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with O_NONBLOCK. Also, the POLLOUT bit is set when the connection
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completes and may be used by poll or select as an indicator to call
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connect again.
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The
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<a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/connect.html">POSIX</a>
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documentation is available online.
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@param [in] s Socket file descriptor returned from ::socket.
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@param [in] address Network address of the remote system
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@param [in] address_len Length of the remote network address
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@return This routine returns zero if successful and -1 when an error occurs.
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In the case of an error, ::errno contains more details.
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**/
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int
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connect (
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int s,
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const struct sockaddr * address,
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socklen_t address_len
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)
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{
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BOOLEAN bBlocking;
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int ConnectStatus;
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struct __filedes * pDescriptor;
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EFI_SOCKET_PROTOCOL * pSocketProtocol;
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EFI_STATUS Status;
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//
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// Locate the context for this socket
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//
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pSocketProtocol = BslFdToSocketProtocol ( s,
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&pDescriptor,
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&errno );
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if ( NULL != pSocketProtocol ) {
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//
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// Determine if the operation is blocking
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//
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bBlocking = (BOOLEAN)( 0 == ( pDescriptor->Oflags & O_NONBLOCK ));
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//
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// Attempt to connect to a remote system
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//
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do {
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errno = 0;
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Status = pSocketProtocol->pfnConnect ( pSocketProtocol,
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address,
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address_len,
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&errno );
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} while ( bBlocking && ( EFI_NOT_READY == Status ));
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}
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//
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// Return the new socket file descriptor
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//
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ConnectStatus = (0 == errno) ? 0 : -1;
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return ConnectStatus;
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}
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