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package obfsvpn_test
import (
"context"
"io"
"testing"
"time"
"gitlab.com/yawning/obfs4.git/common/ntor"
"0xacab.org/leap/obfsvpn"
)
func TestRoundTrip(t *testing.T) {
pair, err := ntor.NewKeypair(false)
if err != nil {
t.Fatalf("error generating keys: %v", err)
}
nodeID, err := ntor.NewNodeID(make([]byte, ntor.NodeIDLength))
if err != nil {
t.Fatalf("error creating node ID: %v", err)
}
lc := obfsvpn.ListenConfig{
NodeID: nodeID,
PrivateKey: pair.Private(),
StateDir: t.TempDir(),
}
ln, err := lc.Listen(context.Background(), "tcp", ":0")
if err != nil {
t.Fatalf("error listening for incoming connection: %v", err)
}
const (
clientSend = `Though they broke my legs, they gave me a crutch to walk.`
serverReply = `Her Majesty's a pretty nice girl, but she's pretty much obsolete.`
)
errs := make(chan error)
serverRecv := make([]byte, len(clientSend))
go func() {
conn, err := ln.Accept()
if err != nil {
errs <- err
return
}
_, err = conn.Read(serverRecv)
if err != nil {
errs <- err
return
}
_, err = io.WriteString(conn, serverReply)
if err != nil {
errs <- err
return
}
}()
select {
case err := <-errs:
t.Fatalf("error accepting connection: %v", err)
default:
}
ctx, cancel := context.WithTimeout(context.Background(), 5*time.Second)
defer cancel()
d := obfsvpn.Dialer{
NodeID: nodeID,
PublicKey: pair.Public(),
}
conn, err := d.Dial(ctx, "tcp", ln.Addr().String())
if err != nil {
t.Fatalf("error dialing connection: %v", err)
}
_, err = io.WriteString(conn, clientSend)
if err != nil {
t.Fatalf("error writing client side: %v", err)
}
select {
case err := <-errs:
t.Fatalf("error reading server side: %v", err)
default:
}
clientRecv := make([]byte, len(serverReply))
_, err = conn.Read(clientRecv)
if err != nil {
t.Fatalf("error reading client side: %v", err)
}
select {
case err := <-errs:
t.Fatalf("error writing server side: %v", err)
default:
}
if s := string(clientRecv); s != serverReply {
t.Fatalf("wrong response from server: want=%q, got=%q", serverReply, s)
}
if s := string(serverRecv); s != clientSend {
t.Fatalf("wrong request from client: want=%q, got=%q", clientSend, s)
}
}
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