写一个tcl脚本用于 spirent testcenter界面控制启动流量后，给sequence执行获取流数据

下面是一个简单的 TCL 脚本示例，用于 Spirent TestCenter 界面控制启动流量后，通过 Sequence 获取流数据：

# 连接到 Spirent TestCenter
set stcApp [new SpirentTestCenter.Application]
$stcApp Perform "AttachPorts"

# 获取端口对象和设备对象
set portList [$stcApp GetObjectHandleList "port"]
set devList [$stcApp GetObjectHandleList "device"]

# 创建测试场景和 Sequence
set hProject [$stcApp GetActiveProject]
set hScenario [$stcApp Create "Scenario" -under $hProject]
set hSequence [$stcApp Create "StreamBlock" -under $hScenario]

# 配置 Sequence 的参数
$stcApp Set $hSequence -AttributePacketCount 100
$stcApp Set $hSequence -AttributePacketLength 64

# 启动流量和执行 Sequence
$stcApp Perform "GeneratorStartAll"
$stcApp Perform "SequencerStart"

# 等待 Sequence 执行完成
while {[$stcApp Get $hSequence -SequencerIsRunning]} {
    after 1000
}

# 获取流数据
set hStreamList [$stcApp GetCollection $hSequence "Children-Stream"]
foreach hStream $hStreamList {
    set rxCount [$stcApp Get $hStream -RxFrameCount]
    set txCount [$stcApp Get $hStream -TxFrameCount]
    set lossCount [$stcApp Get $hStream -LossFrameCount]
    set rate [$stcApp Get $hStream -RxFrameRate]
    puts "Stream $hStream: Rx $rxCount, Tx $txCount, Loss $lossCount, Rate $rate"
}

# 停止流量和 Sequence
$stcApp Perform "SequencerStop"
$stcApp Perform "GeneratorStopAll"

这个脚本示例中，首先连接到 Spirent TestCenter 并获取端口和设备对象。然后创建一个测试场景和 Sequence，并配置 Sequence 的参数。接着启动流量和执行 Sequence，等待 Sequence 执行完成后获取流数据。最后停止流量和 Sequence。用户可以根据实际情况修改脚本中的参数和选项，以实现不同的测试需求。