-
Notifications
You must be signed in to change notification settings - Fork 0
/
scion.go
85 lines (78 loc) · 2.27 KB
/
scion.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
package main
import (
"context"
//"flag"
"log"
"net"
"net/netip"
//"strings"
"time"
//"os"
"crypto/tls"
"github.com/nats-io/nats.go"
"github.com/netsec-ethz/scion-apps/pkg/pan"
"github.com/netsec-ethz/scion-apps/pkg/quicutil"
"github.com/quic-go/quic-go"
)
type customDialer struct {
ctx context.Context
nc *nats.Conn
scionAddr string
connectTimeout time.Duration
connectTimeWait time.Duration
}
func (cd *customDialer) Dial(network, address string) (net.Conn, error) {
// Simplistic policy
policy, err := pan.PolicyFromCommandline("", "latency", false)
log.Println(policy)
log.Println("this is the address", address)
log.Println("this is the network", cd.scionAddr)
// The address can be of the form of a SCION address (i.e. of the form "ISD-AS,[IP]:port")
fullAddr := cd.scionAddr + "," + address
addr, err := pan.ResolveUDPAddr(context.TODO(), fullAddr)
tlsCfg := &tls.Config{
InsecureSkipVerify: true,
NextProtos: []string{quicutil.SingleStreamProto},
//NextProtos: []string{"hello-quic"},
}
quicConf := &quic.Config{
KeepAlivePeriod: 15 * time.Second,
}
log.Println("resolveUPDAdrr:", addr)
// TODO: debug why quic is not connecting to loopback on remote scion host
ql, err := pan.DialQUIC(context.Background(), netip.AddrPort{}, addr, policy, nil, "", tlsCfg, quicConf)
if err != nil {
return nil, err
}
//var dialed quicutil.SingleStream
stream, err := quicutil.NewSingleStream(ql)
if err != nil {
return nil, err
}
return stream, nil
}
/*
func (cd *customDialer) Dial(network, address string) (net.Conn, error) {
ctx, cancel := context.WithTimeout(cd.ctx, cd.connectTimeout)
defer cancel()
for {
log.Println("Attempting to connect to address: ", address)
log.Println("Attempting to connect to network: ", network)
if ctx.Err() != nil {
return nil, ctx.Err()
}
select {
case <-cd.ctx.Done():
return nil, cd.ctx.Err()
default:
d := &net.Dialer{}
if conn, err := d.DialContext(ctx, network, address); err == nil {
log.Println("Connected to NATS successfully")
return conn, nil
} else {
time.Sleep(cd.connectTimeWait)
}
}
}
}
*/