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conn.go
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conn.go
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// Copyright 2017 ETH Zurich
// Copyright 2019 ETH Zurich, Anapaya Systems
//
// 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 snet
import (
"net"
"time"
"github.com/scionproto/scion/go/lib/ctrl/path_mgmt"
"github.com/scionproto/scion/go/lib/scmp"
)
const (
// BufSize is the receive and send buffer sizes
BufSize = 1<<16 - 1
)
type Error interface {
error
SCMP() *scmp.Hdr
}
var _ Error = (*OpError)(nil)
type OpError struct {
scmp *scmp.Hdr
revInfo *path_mgmt.RevInfo
}
func (e *OpError) SCMP() *scmp.Hdr {
return e.scmp
}
func (e *OpError) RevInfo() *path_mgmt.RevInfo {
return e.revInfo
}
func (e *OpError) Error() string {
return e.scmp.String()
}
var _ net.Conn = (*Conn)(nil)
var _ net.PacketConn = (*Conn)(nil)
type Conn struct {
conn PacketConn
scionConnBase
scionConnWriter
scionConnReader
}
func newConn(base *scionConnBase, querier PathQuerier, conn PacketConn) *Conn {
c := &Conn{
conn: conn,
scionConnBase: *base,
}
c.scionConnWriter = *newScionConnWriter(&c.scionConnBase, querier, conn)
c.scionConnReader = *newScionConnReader(&c.scionConnBase, conn)
return c
}
func (c *Conn) SetDeadline(t time.Time) error {
if err := c.scionConnReader.SetReadDeadline(t); err != nil {
return err
}
if err := c.scionConnWriter.SetWriteDeadline(t); err != nil {
return err
}
return nil
}
func (c *Conn) Close() error {
return c.conn.Close()
}