add TransportDirect transport

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

View File

@ -929,6 +929,19 @@ func PrepareStaticConfig(ctx context.Context, log mlog.Log, configFile string, c
}
}
checkTransportDirect := func(name string, t *config.TransportDirect) {
if t.DisableIPv4 && t.DisableIPv6 {
addErrorf("transport %s: both IPv4 and IPv6 are disabled, enable at least one", name)
}
t.IPFamily = "ip"
if t.DisableIPv4 {
t.IPFamily = "ip6"
}
if t.DisableIPv6 {
t.IPFamily = "ip4"
}
}
for name, t := range c.Transports {
n := 0
if t.Submissions != nil {
@ -947,6 +960,10 @@ func PrepareStaticConfig(ctx context.Context, log mlog.Log, configFile string, c
n++
checkTransportSocks(name, t.Socks)
}
if t.Direct != nil {
n++
checkTransportDirect(name, t.Direct)
}
if n > 1 {
addErrorf("transport %s: cannot have multiple methods in a transport", name)
}