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dhcp_common.c File Reference
Functions

dhcp_common.c File Reference

Functions common to DHCP client, server and BOOTP relay agent. More...

Go to the source code of this file.

Functions

void dhcpAddOption (DhcpMessage *message, uint8_t optionCode, const void *optionValue, size_t optionLength)
 Append an option to a DHCP message.
DhcpOption * dhcpGetOption (const DhcpMessage *message, size_t length, uint8_t optionCode)
 Find the specified option in a DHCP message.

Detailed Description

Functions common to DHCP client, server and BOOTP relay agent.

License

Copyright (C) 2010-2017 Oryx Embedded SARL. All rights reserved.

This file is part of CycloneTCP Open.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.

Description

The Dynamic Host Configuration Protocol is used to provide configuration parameters to hosts. Refer to the following RFCs for complete details:

  • RFC 2131: Dynamic Host Configuration Protocol
  • RFC 2132: DHCP Options and BOOTP Vendor Extensions
  • RFC 4039: Rapid Commit Option for the DHCP version 4
Author:
Oryx Embedded SARL (www.oryx-embedded.com)
Version:
1.7.6

Definition in file dhcp_common.c.

Function Documentation

void dhcpAddOption ( DhcpMessage *  message,
uint8_t  optionCode,
const void *  optionValue,
size_t  optionLength 
)

Append an option to a DHCP message.

Parameters:
[in]messagePointer to the DHCP message
[in]optionCodeOption code
[in]optionValueOption value
[in]optionLengthLength of the option value

Definition at line 57 of file dhcp_common.c.

DhcpOption* dhcpGetOption ( const DhcpMessage *  message,
size_t  length,
uint8_t  optionCode 
)

Find the specified option in a DHCP message.

Parameters:
[in]messagePointer to the DHCP message
[in]lengthLength of the message
[in]optionCodeCode of the option to find
Returns:
If the specified option is found, a pointer to the corresponding option is returned. Otherwise NULL pointer is returned

Definition at line 114 of file dhcp_common.c.

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