初始化zmq 项目
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149
Zmq/zmqServer.py
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149
Zmq/zmqServer.py
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import numpy as np
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import zmq
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import threading
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import json
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import queue
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from Device.SunnyLinker import SunnyLinker64
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class zmqServer(threading.Thread):
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def __init__(self, host='0.0.0.0', port=8099):
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threading.Thread.__init__(self)
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self.host = host
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self.port = port
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self.running = False
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self.get_Impedance = False # 是否返回阻抗值
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self.open_Impedance = None # 是否开启阻抗检测功能
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self.StartDecode = False # false 停止解码，true=开始解码
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self.StartTrain = False # False未进入训练状态，True处于训练状态
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self.state_mode = None # 'train'为训练状态，’rest'为休息状态,'test'为测试状态
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self.currentLabel = -1 # 接收刺激端消息，了解刺激端当前的训练标签
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self.IsExitApp = False # 当socket收到2的时候，就置为True，代表要退出系统了。
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self.getReport = False # 获取训练报告内容
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self.daemon = True
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# 创建 ZeroMQ 上下文
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self.context = zmq.Context()
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# 创建 REP 套接字（响应端）
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self.socket = self.context.socket(zmq.ROUTER)
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self.socket.bind(f"tcp://{self.host}:{self.port}") # 绑定到端口 8099
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self.targetFreqs = []
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self.changeTarget = False # 更换目标频率
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self.sunnyLinker = SunnyLinker64(None, None, None, None,None) #单例模式类，已在Decoder实例化
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self.labels = [0x01, 0x02,0x03]
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self.decoder_switch = False #更换解码器
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self.decoder_class = None #解码器类别 'ssvep','ssmvep','mi'
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# Client Management (e.g. Unity, Other listeners)
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self.clients = set() # 维护客户端ID
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self.send_queue = queue.Queue() # 发送队列，安全信箱，维护socket线程
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def broadcast_message(self, method, params):
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"""Put message into queue to be sent to all connected clients"""
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self.send_queue.put((method, params))
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def run(self):
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self.running = True
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print(f"Server is running on {self.host}:{self.port}")
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# Use Poller for non-blocking receive
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poller = zmq.Poller()
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poller.register(self.socket, zmq.POLLIN)
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try:
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while self.running:
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# 1. Process Send Queue (Send to all clients)
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while not self.send_queue.empty():
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method, params = self.send_queue.get()
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if self.clients:
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try:
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msg = {'method': method, 'params': params}
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msg_bytes = json.dumps(msg).encode('utf-8')
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if method in ['single_trial_plot', 'single_trial_plot', 'miReport']:
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print(f"{{'method': '{method}', 'params': <Base64 Image Data>}}")
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else:
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print(f"Sending message: {msg}")
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# Broadcast to all maintained clients
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for client_id in list(self.clients):
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try:
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# Send: [ID, Empty, JSON]
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self.socket.send_multipart([client_id, b'', msg_bytes])
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except Exception as e:
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print(f"Error sending to client {client_id}: {e}")
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except Exception as e:
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print(f"Error preparing broadcast: {e}")
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# 2. Process Receive (Commands)
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socks = dict(poller.poll(10)) # 100ms timeout
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if self.socket in socks and socks[self.socket] == zmq.POLLIN:
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frames = self.socket.recv_multipart()
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if len(frames) < 3:
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continue
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ident, _, message_bytes = frames[:3]
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if ident not in self.clients: # register client ID
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self.clients.add(ident)
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print(f"New Client Detected: {ident}")
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try:
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message = json.loads(message_bytes.decode('utf-8'))
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except json.JSONDecodeError:
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continue
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print(f"Received request: {message}")
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method = message.get("method") # process request
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params = message.get("params")
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if method == "sync":
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self.state_mode = 'sync'
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if method == "targetFreqs":
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if not isinstance(params,list):
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print('targetFreqs must be a list')
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continue
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if params != self.targetFreqs:
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self.targetFreqs = params
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self.changeTarget = True
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if method == "decoderClass":
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if not isinstance(params,str):
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print('decoderClass must be a str')
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continue
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if params != self.decoder_class:
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self.decoder_class = params
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self.decoder_switch = True
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if method == "getReport":
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self.getReport = True
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if method == "train":#训练状态
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self.state_mode = 'train'
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self.StartTrain = True
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self.currentLabel = params # 当前刺激端的训练标签
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self.sunnyLinker.push_trigger(self.labels[self.currentLabel])
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elif method == "predict":#预测状态
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self.state_mode = 'predict'
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if params == 1: #开始解码
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self.StartDecode = True
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self.sunnyLinker.push_trigger(0x63)
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elif params == 2: #停止解码
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self.IsExitApp = True
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self.running = False
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elif method == "rest": #休息状态
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self.state_mode = 'rest'
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elif method == "impedance":
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if params == 1:
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self.open_Impedance = True # 开启阻抗
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self.get_Impedance = True # 返回阻抗
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elif params == 2:
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self.open_Impedance = False # 关闭阻抗
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self.get_Impedance = False # 停止返回阻抗
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except Exception as e:
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print(f"An socket error occurred: {e}")
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finally:
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self.running = False
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# 关闭套接字和上下文
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self.socket.close()
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self.context.term()
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print("Server socket and context closed.")
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def stop(self):
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"""显式关闭服务器"""
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self.running = False
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self.socket.close()
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self.context.term()
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print("Server closed explicitly.")
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if __name__ == '__main__':
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server = zmqServer()
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server.start()
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