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git.proxmox.com Git - mirror_edk2.git/blob - StdLib/BsdSocketLib/recv.c
2 Implement the recv API.
4 Copyright (c) 2011, Intel Corporation
5 All rights reserved. This program and the accompanying materials
6 are licensed and made available under the terms and conditions of the BSD License
7 which accompanies this distribution. The full text of the license may be found at
8 http://opensource.org/licenses/bsd-license.php
10 THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
11 WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
15 #include <SocketInternals.h>
19 Receive data from a network connection.
21 The recv routine waits for receive data from a remote network
22 connection. This routine is typically used for SOCK_STREAM
23 because it waits for receive data from the target system specified
24 in the ::connect call.
27 <a href="http://pubs.opengroup.org/onlinepubs/9699919799/functions/recv.html">POSIX</a>
28 documentation is available online.
30 @param [in] s Socket file descriptor returned from ::socket.
32 @param [in] buffer Address of a buffer to receive the data.
34 @param [in] length Length of the buffer in bytes.
36 @param [in] flags Message control flags
38 @return This routine returns the number of valid bytes in the buffer,
39 zero if no data was received, and -1 when an error occurs.
40 In the case of an error, ::errno contains more details.
54 // Receive the data from the remote system
56 BytesRead
= recvfrom ( s
,
64 // Return the number of bytes read