Restart SNTP client when we have an IPv4 or IPv6 address#26
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This fixes the restarting of the SNTP client when the network interface has a valid IP address. This was broken in changeset 9246ef for IPv4. Note that for IPv6 the SNTP server can take up to 15 seconds to be used due to the async nature of stateless DHCPv6 and SLAAC. For IPv4 it takes effect immediately as the address and SNTP server come in the same packet. Tests: - Verify operation on dual-stack IPv4/IPv6: - DHCPv6 only network (no DHCPv4 server present) - DHCPv4 and DHCPv6 network - Verify operation on IPv4 only stack - Check SNTP restart with LwIP logging enabled - Verify time is requested and received via Wireshark - Verify system time is set Signed-off-by: David J. Fiddes <D.J@fiddes.net>
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Sorry ti took a while to get this fix together. I spent too long chasing a nasty looking stack corruption because my lwip2-src was based off the tip rather than the last stable release as you use. Not quite sure why that would make a difference. I'll try and investigate if I get time. |
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SNTP app patch submitted to the LwIP project for review: https://savannah.nongnu.org/patch/index.php?9749 |
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Thanks ! I will commit this to Arduino asap |
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This fixes the restarting of the SNTP client when the network
interface has a valid IP address. This was broken in changeset
9246ef for IPv4.
Note that for IPv6 the SNTP server can take up to 15 seconds to
be used due to the async nature of stateless DHCPv6 and SLAAC.
For IPv4 it takes effect immediately as the address and SNTP
server come in the same packet.
Tests:
Signed-off-by: David J. Fiddes D.J@fiddes.net