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https://github.com/wneessen/go-mail.git
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Winni Neessen
2c7ea3e532
As proposed by @iwittkau the `SendError` type now has a `IsTemp()` method as well indicating to the user if the delivery error is retryable or not. Since we want to use it in the error response from the Client functions like `Send` or `DialAndSend` we need to return the SendError type not only as part of the `*Msg` but also as return value for these methods. Hence, the changes made for #85 been overhauled to return the new error type instead. In the pre Go1.20 version of the `Send()` method we need to return an accumulated version of the SendError type, since we don't have `errors.Join()` and therefore, if more than one error occurred during the delivery we return an ambiguous error reason since we can't tell which of the captured errors is main error. For more details the user can always check the `*Msg.SendError`
102 lines
2.8 KiB
Go
102 lines
2.8 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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"errors"
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)
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// Send sends out the mail message
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func (c *Client) Send(ml ...*Msg) (rerr error) {
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if err := c.checkConn(); err != nil {
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rerr = &SendError{Reason: ErrConnCheck, errlist: []error{err}, isTemp: isTempError(err)}
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return
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}
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for _, m := range ml {
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m.sendError = nil
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if m.encoding == NoEncoding {
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if ok, _ := c.sc.Extension("8BITMIME"); !ok {
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m.sendError = &SendError{Reason: ErrNoUnencoded, isTemp: false}
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rerr = errors.Join(rerr, m.sendError)
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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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m.sendError = &SendError{Reason: ErrGetSender, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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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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m.sendError = &SendError{Reason: ErrGetRcpts, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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continue
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}
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if err := c.mail(f); err != nil {
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m.sendError = &SendError{Reason: ErrSMTPMailFrom, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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if reserr := c.sc.Reset(); reserr != nil {
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rerr = errors.Join(rerr, reserr)
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}
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continue
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}
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failed := false
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rse := &SendError{}
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rse.errlist = make([]error, 0)
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rse.rcpt = make([]string, 0)
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for _, r := range rl {
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if err := c.rcpt(r); err != nil {
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rse.Reason = ErrSMTPRcptTo
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rse.errlist = append(rse.errlist, err)
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rse.rcpt = append(rse.rcpt, r)
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rse.isTemp = isTempError(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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rerr = errors.Join(rerr, reserr)
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}
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m.sendError = rse
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rerr = errors.Join(rerr, m.sendError)
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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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m.sendError = &SendError{Reason: ErrSMTPData, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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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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m.sendError = &SendError{Reason: ErrWriteContent, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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continue
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}
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if err := w.Close(); err != nil {
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m.sendError = &SendError{Reason: ErrSMTPDataClose, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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continue
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}
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if err := c.Reset(); err != nil {
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m.sendError = &SendError{Reason: ErrSMTPReset, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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continue
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}
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if err := c.checkConn(); err != nil {
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m.sendError = &SendError{Reason: ErrConnCheck, errlist: []error{err}, isTemp: isTempError(err)}
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rerr = errors.Join(rerr, m.sendError)
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}
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}
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return
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}
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