CODEWITHSUNDEEP
sockets
Vinay
Vinay

Reputation: 107

what is the equivalent of IP_TOS (PPROTO_IP option in setsockopt function for IPv4 socket) in IPv6 addressing?

I am using setsocketopt function for Ipv4 address and using IP_TOS value for PPROTO_IP option.

what is the equivalent of IP_TOS in IPv6 addressing? In IPv6 we use PROTO_IPv6, but I could not find any equivalent option like IP_TOS in IPv6 addressing.

Upvotes: 4

Views: 3838

Answers (3)

Steve-o
Steve-o

Reputation: 12866

As per MSDN Article ID: 248611 ToS is ignored and the GQOS API is limited to IPv4-only. For IPv6 and IPv4 you must use qWAVE QOS which requires Vista or later platforms.

i.e. QoS is completely abstracted away from BSD sockets in Windows land.

Upvotes: 0

Remy Lebeau
Remy Lebeau

Reputation: 598319

Deprecating old QoS APIs

"Back in XP we had disabled the Winsock IP_TOS option. If you used this socket option, the call would succeed but be ignored silently. You could re-enable it through a registry value. In Vista, this registry mechanism has been removed: Winsock IP_TOS option is no longer available."

Upvotes: 0

paulsm4
paulsm4

Reputation: 121881

I don't know how widely supported it is, but I believe the constant for "setsockopt() traffic class" would be IPV6_TCLASS:

See also:

Upvotes: 1

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