mirror of
https://github.com/wneessen/go-mail.git
synced 2024-11-22 22:00:49 +01:00
Winni Neessen
8559e8c301
The following changes make use of methods that are not available in Go 1.17/Go 1.18. To guarantee at least 4 versions of backwards compatibility, versioned copies of those changes have been back-ported: -4d8db00641 (diff-4f6f6bdb9891d4dd271f9f31430420a2e44018fe4ee539576faf458bebb3cee4)-58158e990f (diff-772fc9f5d0c86f26e35158fb3e7a71a4967d18b4ec23a5dbb60781ab0babf426)
42 lines
1.1 KiB
Go
42 lines
1.1 KiB
Go
// SPDX-FileCopyrightText: Copyright 2010 The Go Authors. All rights reserved.
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// SPDX-FileCopyrightText: Copyright (c) 2022-2023 The go-mail Authors
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//
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// Original net/smtp code from the Go stdlib by the Go Authors.
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// Use of this source code is governed by a BSD-style
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// LICENSE file that can be found in this directory.
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//
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// go-mail specific modifications by the go-mail Authors.
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// Licensed under the MIT License.
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// See [PROJECT ROOT]/LICENSES directory for more information.
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//
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// SPDX-License-Identifier: BSD-3-Clause AND MIT
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//go:build go1.18
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// +build go1.18
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package smtp
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import "strings"
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// ehlo sends the EHLO (extended hello) greeting to the server. It
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// should be the preferred greeting for servers that support it.
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func (c *Client) ehlo() error {
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_, msg, err := c.cmd(250, "EHLO %s", c.localName)
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if err != nil {
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return err
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}
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ext := make(map[string]string)
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extList := strings.Split(msg, "\n")
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if len(extList) > 1 {
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extList = extList[1:]
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for _, line := range extList {
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k, v, _ := strings.Cut(line, " ")
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ext[k] = v
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}
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}
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if mechs, ok := ext["AUTH"]; ok {
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c.auth = strings.Split(mechs, " ")
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}
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c.ext = ext
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return err
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}
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