增加发送hello兴趣包时的错误处理

hello/HelloProtocol.go

@@ -137,10 +137,14 @@ func (hp *HelloProtocol) SendHelloInterest(neighbor *component.Identifier) {
 		}
 		// 将data发出去
 		hp.expressInterest(name, hp.mlsrConfig.GetInterestResendTime())
-		common2.LogDebug("Sending HELLO interest: " + name.ToUri())
+		common2.LogDebug("HelloProtocol Sending HELLO interest: " + name.ToUri())
 	}
 
 	// 安排按照配置文件中的时间，若干秒后【默认一分钟】发送下一个hello兴趣包
-	hp.m_scheduler.ScheduleTaskAfterDuration(hp.mlsrConfig.GetInfoInterestInterval(), 1).
+	_, err := hp.m_scheduler.ScheduleTaskAfterDuration(hp.mlsrConfig.GetInfoInterestInterval(), 1).
 		Do(hp.SendHelloInterest, neighbor)
+	if err != nil {
+		common2.LogDebug("HelloProtocol ScheduleTask to send hello interest error. ")
+		return
+	}
 }