我正在尝试从 .NET 应用程序订阅 ActiveMQ 主题,下面是我的代码(我使用 Apache NMS 1.7.0):
using Apache.NMS;
using Apache.NMS.ActiveMQ;
...
public void Start()
{
try {
// connect to ActiveMQ
long timestamp = DateTime.Now.Ticks / TimeSpan.TicksPerMillisecond;
string providerUrl = String.Format("tcp://{0}:{1}", Host, Port);
IConnectionFactory connectionFactory = new ConnectionFactory(providerUrl);
connection = connectionFactory.CreateConnection(); // fails here
connection.ClientId = String.Format("{0}/{1}/{2}", AssemblyInfo.Title, Username, timestamp);
connection.Start();
// create consumer and register callback for incoming messages
ISession session = connection.CreateSession(AcknowledgementMode.AutoAcknowledge);
IMessageConsumer messageConsumer = session.CreateConsumer(
new Apache.NMS.ActiveMQ.Commands.ActiveMQTopic(TopicName), MessageSelector, false
);
messageConsumer.Listener += new MessageListener(OnMessage);
} catch (Exception e) {
_.Logger.Error(Resources.ErrorStartingConsumer, e.Message);
}
}
public void OnMessage(IMessage message)
{
if (!(message is ITextMessage)) {
// 'message' is not a text message
_.Logger.Warn(Resources.SkippedMessage, message.NMSMessageId);
} else {
string textMessage = (message as ITextMessage).Text;
foreach (string acceptedProtocol in AcceptedProtocols) {
if (textMessage.StartsWith(acceptedProtocol + ":")) {
// process message here
return;
}
}
// the url contained in 'message' is not supported
_.Logger.Warn(Resources.SkippedMessage, message.NMSMessageId);
}
}
上面的代码编译成功...但是尝试连接到 ActiveMQ 服务器失败。下面是失败的陈述......
connection = connectionFactory.CreateConnection();
...这是错误消息:
Channel was inactive for too long: tcp://172.16.126.194:61615
我有点困惑,因为即使这是我的客户端第一次尝试连接 ActiveMQ 服务器,我也会收到此错误。
我也试过设置wireformat.maxinactivityduration=0
,但没办法。任何帮助将非常感激。