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Code Issues Releases Activity

Ethernet: fix calculation of T2 in DHCP

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This commit is contained in:
Cristian Maglie 2015-06-04 15:15:17 +02:00
parent 2b089e6b58
commit 50dff341f2
1 changed files with 4 additions and 4 deletions
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8
libraries/Ethernet/src/Dhcp.cpp
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@ -94,14 +94,14 @@ int DhcpClass::request_DHCP_lease(){
if(_dhcpLeaseTime == 0){ if(_dhcpLeaseTime == 0){
_dhcpLeaseTime = DEFAULT_LEASE; _dhcpLeaseTime = DEFAULT_LEASE;
} }
//calculate T1 & T2 if we didn't get it // Calculate T1 & T2 if we didn't get it
if(_dhcpT1 == 0){ if(_dhcpT1 == 0){
//T1 should be 50% of _dhcpLeaseTime // T1 should be 50% of _dhcpLeaseTime
_dhcpT1 = _dhcpLeaseTime >> 1; _dhcpT1 = _dhcpLeaseTime >> 1;
} }
if(_dhcpT2 == 0){ if(_dhcpT2 == 0){
//T2 should be 87.5% (7/8ths) of _dhcpLeaseTime // T2 should be 87.5% (7/8ths) of _dhcpLeaseTime
_dhcpT2 = _dhcpT1 << 1; _dhcpT2 = _dhcpLeaseTime - (_dhcpLeaseTime >> 3);
} }
_renewInSec = _dhcpT1; _renewInSec = _dhcpT1;
_rebindInSec = _dhcpT2; _rebindInSec = _dhcpT2;