问题描述
我将以下问题/解决方案扩展为可重入，以便使用 TLS 加密将后续电子邮件连接/提交到 SMTP 电子邮件服务器（例如 Comcast）。
我已经成功地研究并设计了 user9191556 的算法并对其进行了修改以用于后续电子邮件。经过多次反复试验，我成功地将他/她的 TLS 加密功能应用于我之前的算法，并且我的代码始终如一地工作......虽然，我认为这是不正确的。 （是的，我缺乏电子邮件服务器连接协议的基础知识，也可以使用参考） 我对握手前的非依赖睡眠（即 100 毫秒）不满意 适用于我的环境，但怀疑它是否适用于一般环境。 我尝试在 TLS 输入流 (sslIn) 上循环以查看它何时“准备好”，但它总是超时。 因此，100 毫秒的睡眠时间。
是否有更正式/正确的方法来管理 inputStreams - Socket 和 SSLSocket 版本？
谢谢 鲍勃·巴克利 科罗拉多州 Castle Rock ... 是的，正在下雪。
//------------------------------------------------------------------------------
public class SSLComcastTLSPrototype
{
//----------------------------------------------------------------------------
public static void main(String[] args) throws InterruptedException
{
for (int i=0; i<5; ++i)
{
System.out.println("----------------------------------------------");
System.out.println("sendMessage #" + i);
System.out.flush();
sendMessage(i);
}
}
//----------------------------------------------------------------------------
public static void sendMessage(int msgNum)
{
Date dDate = new Date();
DateFormat dFormat = DateFormat.getDateInstance(DateFormat.FULL,Locale.US);
int SMTPPort = 587;
String SMTPServer = "smtp.comcast.net";
try (Socket smtpSocket = new Socket(SMTPServer,SMTPPort);
DataOutputStream os = new DataOutputStream(smtpSocket.getoutputStream());
BufferedReader is = new BufferedReader(new nputStreamReader(smtpSocket.getInputStream ())))
{
int i = 0;
while (! is.ready() && ++i < 10)
Thread.sleep(100);
if (! is.ready())
{
System.err.println("BufferedReader InputStream Timed Out - Email Failed");
System.err.flush();
return;
}
new Thread(new ReadInput(is)).start();
os.writeBytes("EHLO WOPR\r\n");
os.writeBytes("STARTTLS\r\n");
SSLContext ctx = SSLContext.getInstance("TLSv1.2");
ctx.init(null,null,null);
SSLSocketFactory factory = ctx.getSocketFactory();
try (SSLSocket sslSocket = (SSLSocket) factory.createSocket(
smtpSocket,smtpSocket.getInetAddress().getHostAddress(),smtpSocket.getPort(),true))
{
String[] suites = sslSocket.getSupportedCipherSuites();
sslSocket.setEnabledCipherSuites(suites);
try (DataOutputStream sslOut = new DataOutputStream(sslSocket.getoutputStream());
BufferedReader sslIn = new BufferedReader(new InputStreamReader(sslSocket.getInputStream())))
{
Thread.sleep(100);
sslSocket.startHandshake();
sslOut.writeBytes("EHLO WOPR\r\n");
sslOut.writeBytes("AUTH LOGIN\r\n");
sslOut.writeBytes("<encoded username>=\r\n"); // Username,BASE64 encoded
sslOut.writeBytes("<encoded password>\r\n"); // Password,BASE64 encoded
sslOut.writeBytes("MAIL From: Joe@Comcast.net\r\n");
sslOut.writeBytes("RCPT To: JoeCool@Comcast.net\r\n");
//sslOut.writeBytes("RCPT Cc: <Jim@AnyCompany.com>\r\n");
sslOut.writeBytes("DATA\r\n");
sslOut.writeBytes("X-Mailer: Via Java\r\n");
sslOut.writeBytes("DATE: " + dFormat.format(dDate) + "\r\n");
sslOut.writeBytes("From: Runway <Runway@Airfield.com>\r\n");
sslOut.writeBytes("To: Joe Pilot\r\n");
//sslOut.writeBytes("Cc: CCDUDE <CCPerson@TheirCompany.com>\r\n");
//sslOut.writeBytes("RCPT Bcc: BCCDude<BCC@InvisibleCompany.com>\r\n");
sslOut.writeBytes("Subject: Foo Foo\r\n");
sslOut.writeBytes("MIME-VERSION: 1.0\r\n");
sslOut.writeBytes("CONTENT-TYPE: TEXT/HTML; charset=\"ISO-8859-1\"\r\n");
sslOut.writeBytes("CONTENT-transfer-encoding: 7bit\r\n");
sslOut.writeBytes("\r\n");
sslOut.writeBytes("<html>\r\n");
//sslOut.writeBytes("<head>\r\n");
sslOut.writeBytes("<title>G'day,mate!</title>\r\n");
//sslOut.writeBytes("</head>\r\n");
sslOut.writeBytes("Message #" + msgNum + "\r\n\r\n\r\n");
DateFormat df = DateFormat.getDateTimeInstance(DateFormat.FULL,DateFormat.SHORT);
sslOut.writeBytes("\r\n");
sslOut.writeBytes("This is the introduction of my email<br>\r\n");
sslOut.writeBytes("heading of the Date<br>\r\n");
sslOut.writeBytes(df.format(new Date()) + "<br><br>\r\n");
sslOut.writeBytes("</html>\r\n");
sslOut.writeBytes("\r\n.\r\n");
sslOut.writeBytes("QUIT\r\n");
//System.out.println("EMail Message Submitted Successfully");
//System.out.flush();
String response;
while ((response = sslIn.readLine()) != null)
{
//System.out.println("response: " + response);
//System.out.flush();
if (response.contains("recipient invalid domain"))
{
System.err.println("***** Invalid Email Address *****");
System.err.flush();
}
}
}
}
}
catch (NoSuchAlgorithmException | KeyManagementException | IOException | InterruptedException ex)
{
Logger.getLogger(SSLComcastTLSPrototype.class.getName()).log(Level.SEVERE,ex);
}
}
//----------------------------------------------------------------------------
static class ReadInput implements Runnable
{
//--------------------------------------------------------------------------
private final BufferedReader br;
//--------------------------------------------------------------------------
public ReadInput(BufferedReader br)
{
this.br = br;
}
//--------------------------------------------------------------------------
@Override
public void run()
{
try
{
int input;
String allInput = "";
while ((input = br.read()) >= 0)
{
allInput += (char) input;
if (allInput.toLowerCase().endsWith("start tls\r\n"))
break;
}
}
catch (IOException e)
{
System.err.println("***** Exception: readInput *****");
System.err.flush();
e.printstacktrace();
}
}
}
}
解决方法
暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！
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