我无法使用Delphi + Indy从Gmail下载/检索电子邮件!
几周以来,我无法阅读Gmail发来的电子邮件。
在下面的代码正常工作之前。
现在,我总是收到此错误消息:
错误:1408F10B:SSL例程:SSL3_GET_RECORD:版本号错误
在连接Gmail期间。
在Cryptosense Blog上我读了
截至2015年9月,谷歌正在关闭其TLS服务器的SSLv3和RC4支持。
现在有哪些解决方案如何从Gmail阅读电子邮件?
我的代码是这样的:
启动一个新的Delphi项目
您必须从此站点下载SSL dll:
http://indy.fulgan.com/SSL/indy_OpenSSL096m.zip
解压缩文件并将libeay32.dll和ssleay32.dll放在项目路径中。
将Unit1.pas和Unit1.dfm的代码替换为以下代码
更改POP3组件的用户名和密码属性,使其与您的GMAIL帐户相匹配。
运行
// StartOfCode
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, StdCtrls, IdBaseComponent, IdComponent, IdTCPConnection,
IdTCPClient, IdExplicitTLSClientServerBase, IdMessageClient, IdPOP3,
IdIOHandler, IdIOHandlerSocket, IdIOHandlerStack, IdSSL, IdSSLOpenSSL;
type
TForm1 = class(TForm)
POP3: TIdPOP3;
Button1: TButton;
SSLHandler: TIdSSLIOHandlerSocketOpenSSL;
Memo1: TMemo;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
uses
IdMessage, IdText;
{$R *.dfm}
procedure TForm1.Button1Click(Sender: TObject);
var
lMsg: TIdMessage;
liCount: Integer;
liMessages: Integer;
begin
POP3.Connect;
liMessages := POP3.CheckMessages;
Memo1.Lines.Add('CheckMessages: ' + IntToSTr(liMessages));
lMsg := TIdMessage.Create;
try
POP3.Retrieve(1, lMsg);
Memo1.Lines.Text := lMsg.MsgId;
for liCount := 0 to lMsg.MessageParts.Count-1 do
if lMsg.MessageParts[liCount] is TIdText then
Memo1.Lines.AddStrings((lMsg.MessageParts[liCount] as TIdText).Body);
finally
lMsg.Free;
end;
end;
end.
// EndOfCode
// StartOfDFM
object Form1: TForm1
Left = 192
Top = 114
Width = 696
Height = 480
Caption = 'Form1'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object Button1: TButton
Left = 216
Top = 16
Width = 75
Height = 25
Caption = 'Button1'
TabOrder = 0
OnClick = Button1Click
end
object Memo1: TMemo
Left = 24
Top = 56
Width = 657
Height = 185
Lines.Strings = (
'Memo1')
TabOrder = 1
end
object POP3: TIdPOP3
IOHandler = SSLHandler
AutoLogin = True
Host = 'pop.gmail.com'
Username = 'YourName@gmail.com'
UseTLS = utUseImplicitTLS
Password = 'YourPassword'
Port = 995
SASLMechanisms = <>
Left = 40
Top = 16
end
object SSLHandler: TIdSSLIOHandlerSocketOpenSSL
Destination = 'pop.gmail.com:995'
Host = 'pop.gmail.com'
MaxLineAction = maException
Port = 995
DefaultPort = 0
SSLOptions.Method = sslvSSLv3
SSLOptions.Mode = sslmUnassigned
SSLOptions.VerifyMode = []
SSLOptions.VerifyDepth = 0
Left = 80
Top = 16
end
end
// EndOfDFM
答案 0 :(得分:2)
以下测试代码适用于我通过POP3登录Gmail:
procedure Test;
var
IdPOP3: TIdPOP3;
IdSSL: TIdSSLIOHandlerSocketOpenSSL;
begin
IdPOP3 := TIdPOP3.Create(nil);
try
IdPOP3.Host := 'pop.gmail.com';
IdPOP3.Port := 995;
IdPOP3.Username := MyGmailUsername;
IdPOP3.Password := MyGmailAppPassword;
IdPOP3.ConnectTimeout := 60000;
IdSSL := TIdSSLIOHandlerSocketOpenSSL.Create(IdPOP3);
IdSSL.SSLOptions.Method := sslvTLSv1;
IdSSL.SSLOptions.Mode := sslmClient;
IdPOP3.IOHandler := IdSSL;
IdPOP3.UseTLS := utUseImplicitTLS;
IdPOP3.Connect;
try
// use IdPOP3 as needed...
finally
IdPOP3.Disconnect;
end;
finally
IdPOP3.Free;
end;
end;
<强>更新强>
注意:Indy尚未原生支持OAuth身份验证(但是有第三方实施可供选择),因此如果您想使用真实密码(而不是使用第三方身份验证),那么您需要调整自己的Google帐户安全设置为allow less secure apps以访问您的帐户。但是,如果您的帐户已启用2-Step Verification(并且您应该),则无需允许访问“安全性较低的应用”,您可以生成application-specific password并使用该代替你真正的密码。
答案 1 :(得分:0)
只需将setState
从SSLOptions.Method
更改为sslvSSLv3
。