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socket_options.go
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socket_options.go
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// Copyright Project Contour Authors
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package v3
import (
envoy_config_core_v3 "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
"github.com/projectcontour/contour/internal/envoy"
)
type SocketOptions struct {
options []*envoy_config_core_v3.SocketOption
}
func NewSocketOptions() *SocketOptions {
return &SocketOptions{}
}
func (so *SocketOptions) TCPKeepalive() *SocketOptions {
so.options = append(so.options,
// Enable TCP keep-alive.
&envoy_config_core_v3.SocketOption{
Description: "Enable TCP keep-alive",
Level: envoy.SOL_SOCKET,
Name: envoy.SO_KEEPALIVE,
Value: &envoy_config_core_v3.SocketOption_IntValue{IntValue: 1},
State: envoy_config_core_v3.SocketOption_STATE_LISTENING,
},
// The time (in seconds) the connection needs to remain idle
// before TCP starts sending keepalive probes.
&envoy_config_core_v3.SocketOption{
Description: "TCP keep-alive initial idle time",
Level: envoy.IPPROTO_TCP,
Name: envoy.TCP_KEEPIDLE,
Value: &envoy_config_core_v3.SocketOption_IntValue{IntValue: 45},
State: envoy_config_core_v3.SocketOption_STATE_LISTENING,
},
// The time (in seconds) between individual keepalive probes.
&envoy_config_core_v3.SocketOption{
Description: "TCP keep-alive time between probes",
Level: envoy.IPPROTO_TCP,
Name: envoy.TCP_KEEPINTVL,
Value: &envoy_config_core_v3.SocketOption_IntValue{IntValue: 5},
State: envoy_config_core_v3.SocketOption_STATE_LISTENING,
},
// The maximum number of TCP keep-alive probes to send before
// giving up and killing the connection if no response is
// obtained from the other end.
&envoy_config_core_v3.SocketOption{
Description: "TCP keep-alive probe count",
Level: envoy.IPPROTO_TCP,
Name: envoy.TCP_KEEPCNT,
Value: &envoy_config_core_v3.SocketOption_IntValue{IntValue: 9},
State: envoy_config_core_v3.SocketOption_STATE_LISTENING,
},
)
return so
}
// TOS sets the IP_TOS socket option for IPv4 socket.
func (so *SocketOptions) TOS(value int32) *SocketOptions {
if value != 0 {
so.options = append(so.options,
&envoy_config_core_v3.SocketOption{
Description: "Set IPv4 TOS field",
Level: envoy.IPPROTO_IP,
Name: envoy.IP_TOS,
State: envoy_config_core_v3.SocketOption_STATE_LISTENING,
Value: &envoy_config_core_v3.SocketOption_IntValue{IntValue: int64(value)},
})
}
return so
}
// TrafficClass sets the IPV6_TCLASS socket option for IPv4 socket.
func (so *SocketOptions) TrafficClass(value int32) *SocketOptions {
if value != 0 {
so.options = append(so.options,
&envoy_config_core_v3.SocketOption{
Description: "Set IPv6 Traffic Class field",
Level: envoy.IPPROTO_IPV6,
Name: envoy.IPV6_TCLASS,
State: envoy_config_core_v3.SocketOption_STATE_LISTENING,
Value: &envoy_config_core_v3.SocketOption_IntValue{IntValue: int64(value)},
})
}
return so
}
func (so *SocketOptions) Build() []*envoy_config_core_v3.SocketOption {
return so.options
}