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fix #2142

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Allow specifying TCP4 or TCP6 for outgoing email sending, or choosing a
specific local address to send from.
This commit is contained in:
Shivaram Lingamneni 2024-04-07 15:09:51 -04:00
parent 1f4b5248a0
commit b426dd8f93
4 changed files with 38 additions and 7 deletions
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13
irc/smtp/smtp.go
View file

@ -55,17 +55,18 @@ type Client struct {
// Dial returns a new Client connected to an SMTP server at addr.
// The addr must include a port, as in "mail.example.com:smtp".
func Dial(addr string, timeout time.Duration, implicitTLS bool) (*Client, error) {
func Dial(protocol, addr string, localAddress net.Addr, timeout time.Duration, implicitTLS bool) (*Client, error) {
var conn net.Conn
var err error
dialer := net.Dialer{
Timeout: timeout,
Timeout: timeout,
LocalAddr: localAddress,
}
start := time.Now()
if !implicitTLS {
conn, err = dialer.Dial("tcp", addr)
conn, err = dialer.Dial(protocol, addr)
} else {
conn, err = tls.DialWithDialer(&dialer, "tcp", addr, nil)
conn, err = tls.DialWithDialer(&dialer, protocol, addr, nil)
}
if err != nil {
return nil, err
@ -341,7 +342,7 @@ var testHookStartTLS func(*tls.Config) // nil, except for tests
// functionality. Higher-level packages exist outside of the standard
// library.
// XXX: modified in Ergo to add `requireTLS`, `heloDomain`, and `timeout` arguments
func SendMail(addr string, a Auth, heloDomain string, from string, to []string, msg []byte, requireTLS, implicitTLS bool, timeout time.Duration) error {
func SendMail(addr string, a Auth, heloDomain string, from string, to []string, msg []byte, requireTLS, implicitTLS bool, protocol string, localAddress net.Addr, timeout time.Duration) error {
if err := validateLine(from); err != nil {
return err
}
@ -350,7 +351,7 @@ func SendMail(addr string, a Auth, heloDomain string, from string, to []string,
return err
}
}
c, err := Dial(addr, timeout, implicitTLS)
c, err := Dial(protocol, addr, localAddress, timeout, implicitTLS)
if err != nil {
return err
}