Java Eclipse Hono命令行客户端无法连接到沙箱上的Hono

我正在尝试使用“EclipseHono入门”中描述的Hono沙箱

我遵循了所有步骤，但在启动命令行客户端时，我无法连接到服务器：

12:43:22.465 [vert.x-eventloop-thread-0] INFO  o.e.h.client.impl.HonoConnectionImpl - max 
number of attempts [5] to re-connect to server [hono.eclipseprojects.io:15672, role: unknown] have been made, giving up

12:43:22.489 [vert.x-eventloop-thread-0] INFO  o.e.h.client.impl.HonoConnectionImpl - stopping connection attempt to server [hono.eclipseprojects.io:15672, role: unknown] due to terminal 
error

io.vertx.core.VertxException: Disconnected

甚至在启动客户端时：

java -jar hono-cli-*-exec.jar --hono.client.host=hono.eclipseprojects.io --hono.client.port=15672 --hono.client.username=consumer@HONO --hono.client.password=verysecret --tenant.id=DEFAULT_TENANT --device.id=4711 --spring.profiles.active=receiver

不起作用。据我所知，这意味着网络存在问题。验证我可以访问所有必要端口是否成功：

curl -sIX GET http://hono.eclipseprojects.io:28080/v1/tenants/DEFAULT_TENANT

HTTP/1.1 200 OK
etag: ed4151c3-e694-460e-a21d-c68d5e40411e
content-type: application/json; charset=utf-8
content-length: 16

我能够ping地址（hono.eclipseprojects.io）并访问端口（4711）

• 我正在做覆盆子3B+
• 我使用的JDK版本：

我非常感谢任何建议或想法

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提前多谢

感谢您的报告，我们用于沙盒的Let's Encrypt证书已过期。应该再工作一次

java -version 
openjdk version "11.0.9" 2020-10-20
OpenJDK Runtime Environment (build 11.0.9+11-post-Raspbian-1deb10u1)
OpenJDK Server VM (build 11.0.9+11-post-Raspbian-1deb10u1, mixed mode)