1 files changed, 90 insertions, 0 deletions
diff --git a/pkg/server/sockopt.go b/pkg/server/sockopt.go
new file mode 100644
index 00000000..e1c9c467
--- /dev/null
+++ b/pkg/server/sockopt.go
@@ -0,0 +1,90 @@
+// Copyright (C) 2016 Nippon Telegraph and Telephone Corporation.
+//
+// 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.
+// +build !linux,!openbsd
+
+package server
+
+import (
+	"fmt"
+	"net"
+
+	log "github.com/sirupsen/logrus"
+)
+
+func SetTcpMD5SigSockopt(l *net.TCPListener, address string, key string) error {
+	return setTcpMD5SigSockopt(l, address, key)
+}
+
+func SetListenTcpTTLSockopt(l *net.TCPListener, ttl int) error {
+	return setListenTcpTTLSockopt(l, ttl)
+}
+
+func SetTcpTTLSockopt(conn *net.TCPConn, ttl int) error {
+	return setTcpTTLSockopt(conn, ttl)
+}
+
+func SetTcpMinTTLSockopt(conn *net.TCPConn, ttl int) error {
+	return setTcpMinTTLSockopt(conn, ttl)
+}
+
+type TCPDialer struct {
+	net.Dialer
+
+	// MD5 authentication password.
+	AuthPassword string
+
+	// The TTL value to set outgoing connection.
+	Ttl uint8
+
+	// The minimum TTL value for incoming packets.
+	TtlMin uint8
+}
+
+func (d *TCPDialer) DialTCP(addr string, port int) (*net.TCPConn, error) {
+	if d.AuthPassword != "" {
+		log.WithFields(log.Fields{
+			"Topic": "Peer",
+			"Key":   addr,
+		}).Warn("setting md5 for active connection is not supported")
+	}
+	if d.Ttl != 0 {
+		log.WithFields(log.Fields{
+			"Topic": "Peer",
+			"Key":   addr,
+		}).Warn("setting ttl for active connection is not supported")
+	}
+	if d.TtlMin != 0 {
+		log.WithFields(log.Fields{
+			"Topic": "Peer",
+			"Key":   addr,
+		}).Warn("setting min ttl for active connection is not supported")
+	}
+
+	raddr, err := net.ResolveTCPAddr("tcp", net.JoinHostPort(addr, fmt.Sprintf("%d", port)))
+	if err != nil {
+		return nil, fmt.Errorf("invalid remote address: %s", err)
+	}
+	laddr, err := net.ResolveTCPAddr("tcp", d.LocalAddr.String())
+	if err != nil {
+		return nil, fmt.Errorf("invalid local address: %s", err)
+	}
+
+	dialer := net.Dialer{LocalAddr: laddr, Timeout: d.Timeout}
+	conn, err := dialer.Dial("tcp", raddr.String())
+	if err != nil {
+		return nil, err
+	}
+	return conn.(*net.TCPConn), nil
+}