我在 Windows 7 PC 上运行 Rendezvous。我运行了 Tibco 提供的 C++ 示例代码，实现了一个简单的认证消息发送器 (cmsender.cpp) 和一个认证消息侦听器 (cmlistener.cpp)。
原则上，看起来运行这两个程序的结果是发送者发送 10 条消息，而侦听器应该收到 10 条消息并明确确认每条消息都已收到。但是，输出中的某些内容看起来不正确：
发件人输出：
Publishing 10 certified messages on subject cm.test.subject
Publishing message: {index=1}
Publishing message: {index=2}
Confirmed message with seqno=2
Publishing message: {index=3}
Confirmed message with seqno=3
Publishing message: {index=4}
Confirmed message with seqno=4
Publishing message: {index=5}
Confirmed message with seqno=5
Publishing message: {index=6}
Confirmed message with seqno=6
Publishing message: {index=7}
Confirmed message with seqno=7
Publishing message: {index=8}
Confirmed message with seqno=8
Publishing message: {index=9}
Confirmed message with seqno=9
Publishing message: {index=10}
Last sequence number to be confirmed = 10
Confirmed message with seqno=10
监听器输出：
Listening on subject: cm.test.subject
Received message: {index=1}
status=Item not found, seqno=0
Received message: {index=2}
status=Success, seqno=2
Confirming message with seqno=2
Received message: {index=3}
status=Success, seqno=3
Confirming message with seqno=3
Received message: {index=4}
status=Success, seqno=4
Confirming message with seqno=4
Received message: {index=5}
status=Success, seqno=5
Confirming message with seqno=5
Received message: {index=6}
status=Success, seqno=6
Confirming message with seqno=6
Received message: {index=7}
status=Success, seqno=7
Confirming message with seqno=7
Received message: {index=8}
status=Success, seqno=8
Confirming message with seqno=8
Received message: {index=9}
status=Success, seqno=9
Confirming message with seqno=9
Received message: {index=10}
status=Success, seqno=10
Confirming message with seqno=10
请注意，在发送方输出中，seqno=1 的消息永远不会被确认。此外，在侦听器输出中，未找到 seqno=0 的消息。（为了排除故障，我稍微修改了 Tibco cmlistener.cpp 示例代码以打印出状态和 seqno 值，但除此之外，代码保持原样。）
使用此 Rendezvous 示例代码的人是否知道这是否是预期的行为？为什么 seqno=1 的消息没有得到确认？为什么听者看不到 seqno=1 的消息？为什么 seqno=0 的消息会导致状态为“未找到项目”？