Reference

This section provides a summary of documents related to DHCP that you can refer.

The following table explains the various constants used to extract the DHCP options available in Symbian platform.

Constant	Description	Version Supported
KConnGetCurrentAddr	Retrieves the current IP address that the host uses.	IPv4 and IPv6
KConnGetServerAddr	Retrieves the DHCP IP address of the server.	IPv4 and IPv6
KConnGetAddrLeaseTimeRemain	Retrieves the remaining lease time of the current IP address.	IPv4 and IPv6
KConnAddrRelease	Releases the current IP address.	IPv4 and IPv6
KConnAddrRenew	Renews the current lease of the IP address.	IPv4 and IPv6
KConnGetDhcpRawOptionData	Retrieves raw data from the DHCP messages.	IPv4 and IPv6
KConnGetSipServerAddr	Retrieves the SIP server address.	IPv4 and IPv6
KConnGetSipServerDomain	Retrieves the SIP server domain name.	IPv4 and IPv6
KConnGetDhcpHdrSname	Retrieves the host name of next available DHCP server.	IPv4 only
KConngetDhcpHdrSiaddr	Retrieves the IP address of next available DHCP server.	IPv4 only
KConnGetTftpServerAddr	Retrieves the IP address of the TFTP server.	IPv4 only
KConnDhcpGetMultipleParams	Retrieves multiple option code data in raw format.	IPv4 only
KConnGetTftpServerName	Retrieves the host name of the TFTP server.	IPv4 only

Comms Database Configuration for DHCP

To use the DHCP, the following records have to be modified in the Comms Database service table.

Record name	Description	Value
`ConfigDaemonName`	Name of the DHCP daemon to be loaded by the Nifman.	DhcpServ
`IpAddrFromServ`	Determines if an IP address is required from the DHCP server.	TRUE
`IfNetworks`	The protocols supported by the connection.	ip for IPv4 networks or ip6 for IPv6 networks

If the IpAddrFromServ field is set to FALSE, the IPAddr field must be set with a static IP address.

The DHCP daemon in the comms database configures the following DHCP related fields:

Record name	Description
IpAddrLeaseValidFrom	The start time of the IP address.
IpAddrLeaseValidTo	The end time of the IP address.
IpAddr	The IP address of the device.

Parent topic: Dynamic Host Configuration Protocol