安卓(23) - Smack (4.1.8) - XMPP - "SSL23_GET_SERVER_HELLO:unknown协议“错误

import org.jivesoftware.smack.ConnectionConfiguration;
import org.jivesoftware.smack.SmackException;
import org.jivesoftware.smack.XMPPException;
import org.jivesoftware.smack.tcp.XMPPTCPConnection;
import org.jivesoftware.smack.tcp.XMPPTCPConnectionConfiguration;

import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import java.security.KeyManagementException;
import java.security.NoSuchAlgorithmException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;

public class XMPPClient {
    public static void main(String[] args) {
        try {
            // 创建自定义的SSL上下文
            SSLContext sslContext = SSLContext.getInstance("TLS");
            sslContext.init(null, new TrustManager[]{new X509TrustManager() {
                public void checkClientTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                }

                public void checkServerTrusted(X509Certificate[] chain, String authType) throws CertificateException {
                }

                public X509Certificate[] getAcceptedIssuers() {
                    return new X509Certificate[0];
                }
            }}, null);

            // 创建连接配置
            XMPPTCPConnectionConfiguration config = XMPPTCPConnectionConfiguration.builder()
                    .setHost("your_server_host")
                    .setPort(5222)
                    .setCustomSSLContext(sslContext) // 设置自定义的SSL上下文
                    .setHostnameVerifier((hostname, session) -> true) // 忽略主机名验证
                    .build();

            // 创建连接
            XMPPTCPConnection connection = new XMPPTCPConnection(config);
            connection.connect();
            connection.login("username", "password");

            // 进行其他操作...

            connection.disconnect();
        } catch (XMPPException | SmackException | NoSuchAlgorithmException | KeyManagementException e) {
            e.printStackTrace();
        }
    }
}