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Build # 3189

Build Type

push

travis-ci

Committed by schallert

Commit Message

Set DiffServ (QoS) bit on Outbound Connections

The QoS option is configurable using DiffServ names AF11, etc.
DiffServ names correspond with rfc4594 recommended values,
that are also implemented with iptables.
A ToS bit is Configurable using DefaultConnectionOptions.TosPriority
configuration parameter on create server.

The QoS feature was implmeented with a dual stack network in mind.
setsockopt will throw an error if the wrong address family flag
is called.

- Adding Configuration Parameter TosPriority to ConnectonOptions.
- dscpName to interger value in tos.go.
- Test dscp value mapping is compliant with RFC4594 recommened values.
- TestTosPriority in connection_test.go to verify the outgoing socket
has the correct ToS Bit set.
- Helper function IsTosPriority to determine if bit matches

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