mirror of
https://github.com/wneessen/go-mail.git
synced 2024-11-22 13:50:49 +01:00
Winni Neessen
48b4dc6b6c
`Client.Send()` provides the possibility to send multiple `*Msg` in one go. If one of the `*Msg` caused an error with the sending mail server, we were returning completely, while not processing any `*Msg` that came after the failing message. This PR fixes this behaviour by processing each message first and then return a accumulated error in case any of the `*Msg` processing failed Additionally, this PR separates the `Client.Send()` method into two different versions. One that makes use of the new `errors.Join()` functionality that is introduced with Go 1.20 and one that handles it the old way for any supported version lower than Go 1.20
95 lines
2 KiB
Go
95 lines
2 KiB
Go
// SPDX-FileCopyrightText: 2022 Winni Neessen <winni@neessen.dev>
|
|
//
|
|
// SPDX-License-Identifier: MIT
|
|
|
|
//go:build !go1.20
|
|
// +build !go1.20
|
|
|
|
package mail
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
// Send sends out the mail message
|
|
func (c *Client) Send(ml ...*Msg) error {
|
|
var errs []error
|
|
if err := c.checkConn(); err != nil {
|
|
return fmt.Errorf("failed to send mail: %w", err)
|
|
}
|
|
for _, m := range ml {
|
|
if m.encoding == NoEncoding {
|
|
if ok, _ := c.sc.Extension("8BITMIME"); !ok {
|
|
errs = append(errs, ErrServerNoUnencoded)
|
|
continue
|
|
}
|
|
}
|
|
f, err := m.GetSender(false)
|
|
if err != nil {
|
|
errs = append(errs, err)
|
|
continue
|
|
}
|
|
rl, err := m.GetRecipients()
|
|
if err != nil {
|
|
errs = append(errs, err)
|
|
continue
|
|
}
|
|
|
|
if err := c.mail(f); err != nil {
|
|
errs = append(errs, fmt.Errorf("sending MAIL FROM command failed: %w", err))
|
|
if reserr := c.sc.Reset(); reserr != nil {
|
|
errs = append(errs, reserr)
|
|
}
|
|
continue
|
|
}
|
|
failed := false
|
|
for _, r := range rl {
|
|
if err := c.rcpt(r); err != nil {
|
|
errs = append(errs, fmt.Errorf("sending RCPT TO command failed: %w", err))
|
|
failed = true
|
|
}
|
|
}
|
|
if failed {
|
|
if reserr := c.sc.Reset(); reserr != nil {
|
|
errs = append(errs, reserr)
|
|
}
|
|
continue
|
|
}
|
|
w, err := c.sc.Data()
|
|
if err != nil {
|
|
errs = append(errs, fmt.Errorf("sending DATA command failed: %w", err))
|
|
continue
|
|
}
|
|
_, err = m.WriteTo(w)
|
|
if err != nil {
|
|
errs = append(errs, fmt.Errorf("sending mail content failed: %w", err))
|
|
continue
|
|
}
|
|
|
|
if err := w.Close(); err != nil {
|
|
errs = append(errs, fmt.Errorf("failed to close DATA writer: %w", err))
|
|
continue
|
|
}
|
|
|
|
if err := c.Reset(); err != nil {
|
|
errs = append(errs, fmt.Errorf("sending RSET command failed: %w", err))
|
|
continue
|
|
}
|
|
if err := c.checkConn(); err != nil {
|
|
errs = append(errs, fmt.Errorf("failed to check server connection: %w", err))
|
|
continue
|
|
}
|
|
}
|
|
|
|
if len(errs) > 0 {
|
|
errtxt := ""
|
|
for i := range errs {
|
|
errtxt += fmt.Sprintf("%s", errs[i])
|
|
if i < len(errs) {
|
|
errtxt += "\n"
|
|
}
|
|
}
|
|
return fmt.Errorf("%s", errtxt)
|
|
}
|
|
return nil
|
|
}
|