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add TransportDirect transport

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The `TransportDirect` transport allows to tweak outgoing SMTP
connections to remote servers. Currently, it only allows to select
network IP family (ipv4, ipv6 or both).

For example, to disable ipv6 for all outgoing SMTP connections:
- add these lines in mox.conf to create a new transport named
"disableipv6":
```
Transports:
  disableipv6:
    Direct:
      DisableIpv6: true
```
- then add these lines in domains.conf to use this transport:
```
Routes:
  -
    Transport: disableipv6
```

fix #149
This commit is contained in:
Laurent Meunier
2024-04-08 21:50:30 +02:00
parent d74610c345
commit be570d1c7d
14 changed files with 124 additions and 36 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
smtpclient/gather_test.go
View File

@ -155,16 +155,16 @@ func TestGatherIPs(t *testing.T) {
"temperror-cname.example.": "absent.example.",
},
Fail: []string{
"host temperror-a.example.",
"ip temperror-a.example.",
"cname temperror-cname.example.",
},
Inauthentic: []string{"cname cnameinauthentic.example."},
}
test := func(host dns.IPDomain, expAuthic, expAuthicExp bool, expHostExp dns.Domain, expIPs []net.IP, expErr any) {
test := func(host dns.IPDomain, expAuthic, expAuthicExp bool, expHostExp dns.Domain, expIPs []net.IP, expErr any, network string) {
t.Helper()
authic, authicExp, hostExp, ips, _, err := GatherIPs(ctxbg, log.Logger, resolver, host, nil)
authic, authicExp, hostExp, ips, _, err := GatherIPs(ctxbg, log.Logger, resolver, network, host, nil)
if (err == nil) != (expErr == nil) || err != nil && !(errors.Is(err, expErr.(error)) || errors.As(err, &expErr)) {
// todo: could also check the individual errors?
t.Fatalf("gather hosts: %v, expected %v", err, expErr)
@ -191,18 +191,22 @@ func TestGatherIPs(t *testing.T) {
authic := i == 1
resolver.AllAuthentic = authic
test(ipdomain("host1.example"), authic, authic, zerohost, ips("10.0.0.1"), nil)
test(ipdomain("host2.example"), authic, authic, zerohost, ips("10.0.0.2", "2001:db8::1"), nil)
test(ipdomain("cname-to-inauthentic.example"), authic, false, domain("host1.example"), ips("10.0.0.1"), nil)
test(ipdomain("cnameloop.example"), authic, authic, zerohost, nil, errCNAMELimit)
test(ipdomain("bogus.example"), authic, authic, zerohost, nil, &adns.DNSError{})
test(ipdomain("danglingcname.example"), authic, authic, zerohost, nil, &adns.DNSError{})
test(ipdomain("temperror-a.example"), authic, authic, zerohost, nil, &adns.DNSError{})
test(ipdomain("temperror-cname.example"), authic, authic, zerohost, nil, &adns.DNSError{})
test(ipdomain("host1.example"), authic, authic, zerohost, ips("10.0.0.1"), nil, "ip")
test(ipdomain("host1.example"), authic, authic, zerohost, ips("10.0.0.1"), nil, "ip4")
test(ipdomain("host1.example"), authic, authic, zerohost, nil, &adns.DNSError{}, "ip6")
test(ipdomain("host2.example"), authic, authic, zerohost, ips("10.0.0.2", "2001:db8::1"), nil, "ip")
test(ipdomain("host2.example"), authic, authic, zerohost, ips("10.0.0.2"), nil, "ip4")
test(ipdomain("host2.example"), authic, authic, zerohost, ips("2001:db8::1"), nil, "ip6")
test(ipdomain("cname-to-inauthentic.example"), authic, false, domain("host1.example"), ips("10.0.0.1"), nil, "ip")
test(ipdomain("cnameloop.example"), authic, authic, zerohost, nil, errCNAMELimit, "ip")
test(ipdomain("bogus.example"), authic, authic, zerohost, nil, &adns.DNSError{}, "ip")
test(ipdomain("danglingcname.example"), authic, authic, zerohost, nil, &adns.DNSError{}, "ip")
test(ipdomain("temperror-a.example"), authic, authic, zerohost, nil, &adns.DNSError{}, "ip")
test(ipdomain("temperror-cname.example"), authic, authic, zerohost, nil, &adns.DNSError{}, "ip")
}
test(ipdomain("cnameinauthentic.example"), false, false, domain("host1.example"), ips("10.0.0.1"), nil)
test(ipdomain("cname-to-inauthentic.example"), true, false, domain("host1.example"), ips("10.0.0.1"), nil)
test(ipdomain("cnameinauthentic.example"), false, false, domain("host1.example"), ips("10.0.0.1"), nil, "ip")
test(ipdomain("cname-to-inauthentic.example"), true, false, domain("host1.example"), ips("10.0.0.1"), nil, "ip")
}
func TestGatherTLSA(t *testing.T) {