mirror of
https://github.com/wneessen/go-mail.git
synced 2024-11-12 17:02:55 +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>
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//
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// SPDX-License-Identifier: MIT
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//go:build !go1.20
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// +build !go1.20
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package mail
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import (
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"fmt"
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)
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// Send sends out the mail message
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func (c *Client) Send(ml ...*Msg) error {
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var errs []error
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if err := c.checkConn(); err != nil {
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return fmt.Errorf("failed to send mail: %w", err)
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}
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for _, m := range ml {
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if m.encoding == NoEncoding {
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if ok, _ := c.sc.Extension("8BITMIME"); !ok {
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errs = append(errs, ErrServerNoUnencoded)
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continue
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}
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}
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f, err := m.GetSender(false)
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if err != nil {
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errs = append(errs, err)
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continue
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}
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rl, err := m.GetRecipients()
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if err != nil {
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errs = append(errs, err)
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continue
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}
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if err := c.mail(f); err != nil {
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errs = append(errs, fmt.Errorf("sending MAIL FROM command failed: %w", err))
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if reserr := c.sc.Reset(); reserr != nil {
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errs = append(errs, reserr)
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}
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continue
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}
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failed := false
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for _, r := range rl {
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if err := c.rcpt(r); err != nil {
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errs = append(errs, fmt.Errorf("sending RCPT TO command failed: %w", err))
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failed = true
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}
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}
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if failed {
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if reserr := c.sc.Reset(); reserr != nil {
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errs = append(errs, reserr)
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}
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continue
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}
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w, err := c.sc.Data()
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if err != nil {
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errs = append(errs, fmt.Errorf("sending DATA command failed: %w", err))
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continue
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}
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_, err = m.WriteTo(w)
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if err != nil {
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errs = append(errs, fmt.Errorf("sending mail content failed: %w", err))
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continue
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}
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if err := w.Close(); err != nil {
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errs = append(errs, fmt.Errorf("failed to close DATA writer: %w", err))
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continue
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}
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if err := c.Reset(); err != nil {
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errs = append(errs, fmt.Errorf("sending RSET command failed: %w", err))
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continue
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}
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if err := c.checkConn(); err != nil {
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errs = append(errs, fmt.Errorf("failed to check server connection: %w", err))
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continue
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}
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}
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if len(errs) > 0 {
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errtxt := ""
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for i := range errs {
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errtxt += fmt.Sprintf("%s", errs[i])
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if i < len(errs) {
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errtxt += "\n"
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}
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}
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return fmt.Errorf("%s", errtxt)
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}
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return nil
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}
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