java - Telegram SendMessage 私有(private) channel - 收到致命警报 : handshake_failure

Question

该代码直到上周才有效。现在我收到 handshake_failure 错误，但我不知道到底为什么，如果能提供一些帮助，我们将不胜感激!

String urlString = "https://api.telegram.org/bot%s/sendMessage?chat_id=%s&text=%s";

String channelName = "-100123456789"; // ex.

urlString = String.format(urlString, apiToken, channelName, message);

URL url = new URL(urlString);
URLConnection conn = url.openConnection();

StringBuilder sb = new StringBuilder();
InputStream is = new BufferedInputStream(conn.getInputStream());
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String inputLine = "";
while ((inputLine = br.readLine()) != null) {
    sb.append(inputLine);
}
String response = sb.toString();

Answer 1

自上周以来，telegram 已停止使用 TLS 1.1 和 1.0，现在仅支持 TLS 1.2，因此您需要升级。

Please note that the Bot API only accepts incoming TLS 1.2 connections (or higher). Kindly update your bot if it was using the outdated TLS 1.0 or TLS 1.1 protocol.

https://t.me/BotNews/51