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// Copyright (C) 2019-2024 Algorand, Inc.
// This file is part of go-algorand
//
// go-algorand is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// go-algorand is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with go-algorand. If not, see <https://www.gnu.org/licenses/>.
package network
import (
"context"
"net"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/algorand/go-algorand/logging"
"github.com/algorand/go-algorand/test/partitiontest"
"github.com/algorand/go-algorand/tools/network/dnssec"
)
func TestSystemResolver(t *testing.T) {
partitiontest.PartitionTest(t)
a := require.New(t)
log := logging.Base()
c := NewResolveController(false, "127.0.0.1", log)
r := c.SystemResolver()
a.IsType(&net.Resolver{}, r)
c = NewResolveController(true, "127.0.0.1", log)
r = c.SystemResolver()
a.IsType(&dnssec.Resolver{}, r)
a.GreaterOrEqual(len(r.(*dnssec.Resolver).EffectiveResolverDNS()), 0)
}
func TestFallbackResolver(t *testing.T) {
partitiontest.PartitionTest(t)
a := require.New(t)
log := logging.Base()
c := NewResolveController(false, "127.0.0.1", log)
r := c.FallbackResolver()
a.IsType(&Resolver{}, r)
a.Equal("127.0.0.1", r.(*Resolver).EffectiveResolverDNS())
c = NewResolveController(true, "127.0.0.1", log)
r = c.FallbackResolver()
a.IsType(&dnssec.Resolver{}, r)
a.Equal(r.(*dnssec.Resolver).EffectiveResolverDNS(), []dnssec.ResolverAddress{dnssec.MakeResolverAddress("127.0.0.1", "53")})
}
func TestDefaultResolver(t *testing.T) {
partitiontest.PartitionTest(t)
a := require.New(t)
log := logging.Base()
c := NewResolveController(false, "127.0.0.1", log)
r := c.DefaultResolver()
a.IsType(&Resolver{}, r)
a.Equal(defaultDNSAddress, r.(*Resolver).EffectiveResolverDNS())
c = NewResolveController(true, "127.0.0.1", log)
r = c.DefaultResolver()
a.IsType(&dnssec.Resolver{}, r)
a.Equal(r.(*dnssec.Resolver).EffectiveResolverDNS(), dnssec.DefaultDnssecAwareNSServers)
}
func TestRealNamesWithResolver(t *testing.T) {
partitiontest.PartitionTest(t)
t.Skip() // skip real network tests in autotest
a := require.New(t)
log := logging.Base()
example := "example.com"
nsec := NewResolveController(false, "1.1.1.1", log)
sec := NewResolveController(true, "1.1.1.1", log)
r := nsec.SystemResolver()
addrs, err := r.LookupIPAddr(context.Background(), example)
a.NoError(err)
a.GreaterOrEqual(len(addrs), 1) // ipv4 + ipv6
r = sec.SystemResolver()
timeoutCtx, cancel := context.WithTimeout(context.Background(), time.Second)
addrs, err = r.LookupIPAddr(timeoutCtx, example)
cancel()
a.NoError(err)
a.Equal(len(addrs), 1) // ipv4 only
for _, secure := range []bool{false, true} {
c := NewResolveController(secure, "1.1.1.1", log)
r = c.FallbackResolver()
addrs, err = r.LookupIPAddr(context.Background(), example)
a.NoError(err)
a.GreaterOrEqual(len(addrs), 1)
r = c.DefaultResolver()
addrs, err = r.LookupIPAddr(context.Background(), example)
a.NoError(err)
a.GreaterOrEqual(len(addrs), 1)
c = NewResolveController(secure, "192.168.12.34", log)
r = c.FallbackResolver()
timeoutCtx, cancel := context.WithTimeout(context.Background(), time.Second)
_, err = r.LookupIPAddr(timeoutCtx, example)
cancel()
a.Error(err)
}
}
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