src/main/java/com/alipay/remoting/DefaultConnectionManager.java
private void removeTask(String poolKey) {
        RunStateRecordedFutureTask<ConnectionPool> task = this.connTasks.remove(poolKey);
        if (null != task) {
            ConnectionPool pool = FutureTaskUtil.getFutureTaskResult(task, logger);
            if (null != pool) {
                pool.removeAllAndTryClose();
            }
        }
    }
private void removeTask(String poolKey) {
        RunStateRecordedFutureTask<ConnectionPool> task = this.connTasks.remove(poolKey);
        if (null != task) {
            ConnectionPool pool = FutureTaskUtil.getFutureTaskResult(task, logger);
            if (null != pool) {
                pool.removeAllAndTryClose();
            }
        }
    }
remove task and remove all connections

@param poolKey