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import sys
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import socket
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import threading
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from PyQt5.QtWidgets import QMainWindow, QVBoxLayout, QPushButton, \
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QListWidget, QLabel, QWidget, QMessageBox, QTextEdit
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from PyQt5.QtCore import Qt, QThread, pyqtSignal, QObject
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from PyQt5.QtNetwork import QNetworkInterface,QAbstractSocket
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from datetime import datetime
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class TcpClient(object):
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def __init__(self):
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# 配置信息
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self.udpPort = 54321
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self.broadcastAddr = '<broadcast>'
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def discoverServers(self):
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# print("[*] 正在扫描局域网设备...")
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udpSock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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udpSock.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
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udpSock.settimeout(2)
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udpSock.sendto(b"DISCOVERY_REQUEST", (self.broadcastAddr, self.udpPort))
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servers = []
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try:
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while True:
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data, addr = udpSock.recvfrom(1024)
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if data.startswith(b"DISCOVERY_RESPONSE"):
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# 修正点：正确解析服务端IP和TCP端口
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_, hostname, tcpPort = data.decode('utf-8').split(':')
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serverIp = addr # 提取IP字符串
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servers.append({
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'ip': serverIp, # 存储为字符串
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'port': int(tcpPort), # 存储为整数
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'hostname': hostname
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})
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print()
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except socket.timeout:
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pass
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finally:
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udpSock.close()
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return servers
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def connectToServer(self, ip, tcpPort):
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client = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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try:
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# 显式转换类型确保安全
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client.connect((str(ip), int(tcpPort)))
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# print(f"[+] 已连接到 {ip}:{tcpPort}")
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client.send(b"Hello from client!")
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response = client.recv(1024)
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# print(f"服务端响应: {response.decode('utf-8')}")
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return True
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except Exception as e:
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print(f"连接失败: {e}")
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return False
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finally:
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client.close()
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class DiscoveryThread(QThread):
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"""用于在后台执行设备发现的线程"""
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discoveryFinished = pyqtSignal(list) # 信号，携带发现的设备列表
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def __init__(self, tcpClient):
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super().__init__()
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self.tcpClient = tcpClient
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def run(self):
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servers = self.tcpClient.discoverServers()
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self.discoveryFinished.emit(servers)
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class DeviceMasterWidget(QMainWindow):
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def __init__(self):
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super().__init__()
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self.tcpClient = TcpClient()
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self.servers = []
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self.initUI()
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def initUI(self):
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self.setWindowTitle('局域网设备发现')
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# self.setGeometry(1000, 500, 400, 300)
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# 主窗口部件
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centralWidget = QWidget()
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self.setCentralWidget(centralWidget)
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layout = QVBoxLayout()
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self.ipAddresslabel = QLabel(self)
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self.ipAddresslabel.setObjectName("setlabel")
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self.ipAddresslabel.setAlignment(Qt.AlignLeading|Qt.AlignLeft|Qt.AlignVCenter)
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layout.addWidget(self.ipAddresslabel)
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# 标题标签
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self.titleLabel = QLabel('点击"扫描设备"按钮发现局域网中的设备')
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layout.addWidget(self.titleLabel)
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# 设备列表
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self.deviceList = QListWidget()
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layout.addWidget(self.deviceList)
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self.scanButton = QPushButton('扫描设备')
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self.scanButton.clicked.connect(self.startDiscovery)
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layout.addWidget(self.scanButton)
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self.scanButton.setObjectName('setButton')
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self.connectButton = QPushButton('连接设备')
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self.connectButton.clicked.connect(self.connectToDevice)
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self.connectButton.setEnabled(False)
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self.connectButton.setObjectName('setButton')
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layout.addWidget(self.connectButton)
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self.ipAddresslabel.setText('当前设备IP地址: ' + self.getLocalIp())
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centralWidget.setLayout(layout)
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# self.show()
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def startDiscovery(self):
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"""开始扫描设备"""
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self.scanButton.setEnabled(False)
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self.titleLabel.setText('正在扫描局域网设备...')
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self.deviceList.clear()
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# 创建并启动发现线程
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self.discoveryThread = DiscoveryThread(self.tcpClient)
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self.discoveryThread.discoveryFinished.connect(self.onDiscoveryFinished)
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self.discoveryThread.start()
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def onDiscoveryFinished(self, servers):
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"""设备扫描完成后的回调"""
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self.scanButton.setEnabled(True)
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self.servers = servers
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if not servers:
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self.titleLabel.setText('未发现任何设备')
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QMessageBox.information(self, '提示', '未发现任何设备')
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return
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self.titleLabel.setText(f'发现 {len(servers)} 个设备:')
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# 在列表中显示设备
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for server in servers:
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itemText = f"{server['hostname']} ({server['ip'][0]})"
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self.deviceList.addItem(itemText)
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self.connectButton.setEnabled(True)
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def connectToDevice(self):
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"""连接选中的设备"""
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selectedIndex = self.deviceList.currentRow()
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if selectedIndex == -1:
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QMessageBox.warning(self, '警告', '请先选择一个设备')
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return
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selectedServer = self.servers[selectedIndex]
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print(selectedServer['ip'][0])
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def getLocalIp(self):
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for interface in QNetworkInterface.allInterfaces():
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if interface.flags() & QNetworkInterface.IsUp:
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for entry in interface.addressEntries():
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ip = entry.ip()
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# 修改为新的枚举访问方式
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if ip.protocol() == QAbstractSocket.IPv4Protocol and not ip.isLoopback():
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return ip.toString()
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return "192.168.1.1" # 默认回退值
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class TcpServer(QObject):
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updateSignal = pyqtSignal(str)
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def __init__(self):
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super().__init__()
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# 配置信息
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self.tcpPort = 12345 # 服务端TCP监听端口
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self.udpPort = 54321 # 设备发现UDP端口
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self.broadcastAddr = '<broadcast>' # 广播地址
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self.tcpRunning = False
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self.udpRunning = False
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self.tcpThread = None
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self.udpThread = None
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self.serverSocket = None
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self.udpSocket = None
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def log(self, message):
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currentTime = datetime.now().strftime("%Y-%m-%d %H:%M:%S")
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logMessage = f"[{currentTime}] {message}"
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self.updateSignal.emit(logMessage)
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# def tcpServer(self):
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# try:
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# self.serverSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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# self.serverSocket.settimeout(1) # 设置1秒超时
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# self.serverSocket.bind(('0.0.0.0', self.tcpPort))
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# self.serverSocket.listen(5)
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# self.log(f"TCP服务端已启动，监听端口 {self.tcpPort}")
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# while self.tcpRunning:
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# try:
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# clientSock, addr = self.serverSocket.accept()
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# self.log(f"接收到来自 {addr} 的连接")
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# clientThread = threading.Thread(target=self.handleClient, args=(clientSock,))
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# clientThread.start()
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# except socket.timeout:
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# continue # 超时后继续检查运行标志
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# except:
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# break
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# except Exception as e:
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# self.log(f"TCP服务器错误: {e}")
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# finally:
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# if self.serverSocket:
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# self.serverSocket.close()
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# self.log("TCP服务端已停止")
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def handleClient(self, clientSock):
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try:
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while True:
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data = clientSock.recv(1024)
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if not data:
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break
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self.log(f"收到消息: {data.decode('utf-8')}")
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clientSock.send(b"ACK") # 返回确认
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except Exception as e:
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self.log(f"客户端异常断开: {e}")
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finally:
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clientSock.close()
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def udpDiscoveryServer(self):
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try:
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self.udpSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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self.udpSocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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self.udpSocket.setsockopt(socket.SOL_SOCKET, socket.SO_BROADCAST, 1)
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self.udpSocket.bind(('', self.udpPort))
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self.log(f"UDP发现服务已启动，监听端口 {self.udpPort}")
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while self.udpRunning:
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try:
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data, addr = self.udpSocket.recvfrom(1024)
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if data.decode('utf-8') == "DISCOVERY_REQUEST":
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self.log(f"收到来自 {addr} 的发现请求")
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response = f"DISCOVERY_RESPONSE:{socket.gethostname()}:{self.tcpPort}"
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self.udpSocket.sendto(response.encode('utf-8'), addr)
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except:
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break
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except Exception as e:
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self.log(f"UDP服务器错误: {e}")
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finally:
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if self.udpSocket:
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self.udpSocket.close()
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self.log("UDP发现服务已停止")
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# def startTcpServer(self):
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# if not self.tcpRunning:
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# self.tcpRunning = True
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# self.tcpThread = threading.Thread(target=self.tcpServer)
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# self.tcpThread.start()
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# def stopTcpServer(self):
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# if self.tcpRunning:
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# self.tcpRunning = False
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# # 创建一个临时连接来解除accept阻塞
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# try:
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# tempSocket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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# tempSocket.connect(('127.0.0.1', self.tcpPort))
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# tempSocket.close()
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# except:
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# pass
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def startUdpServer(self):
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if not self.udpRunning:
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self.udpRunning = True
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self.udpThread = threading.Thread(target=self.udpDiscoveryServer)
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self.udpThread.start()
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def stopUdpServer(self):
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if self.udpRunning:
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self.udpRunning = False
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# 发送一个空数据包来解除recvfrom阻塞
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try:
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tempSocket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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tempSocket.sendto(b'', ('127.0.0.1', self.udpPort))
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tempSocket.close()
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except:
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pass
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class DeviceSlaveWidget(QMainWindow):
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def __init__(self):
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super().__init__()
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self.setWindowTitle("TCP/UDP 服务器控制")
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# self.setGeometry(100, 100, 600, 400)
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self.server = TcpServer()
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self.server.updateSignal.connect(self.updateLog)
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self.initUI()
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def initUI(self):
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# 主布局
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mainLayout = QVBoxLayout()
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# 控制按钮
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# self.tcpButton = QPushButton("启动 TCP 服务器")
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# self.tcpButton.clicked.connect(self.toggleTcpServer)
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# self.tcpButton.setObjectName('setButton')
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self.udpButton = QPushButton("开启远程通讯模式")
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self.udpButton.clicked.connect(self.toggleUdpServer)
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self.udpButton.setObjectName('setButton')
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# 日志显示
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self.logDisplay = QTextEdit()
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self.logDisplay.setReadOnly(True)
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# 添加到布局
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# mainLayout.addWidget(self.tcpButton)
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mainLayout.addWidget(self.udpButton)
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mainLayout.addWidget(QLabel("服务器日志:"))
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mainLayout.addWidget(self.logDisplay)
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# 设置中心部件
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container = QWidget()
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container.setLayout(mainLayout)
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self.setCentralWidget(container)
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def toggleTcpServer(self):
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if self.server.tcpRunning:
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self.server.stopTcpServer()
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# self.tcpButton.setText("启动 TCP 服务器")
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else:
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self.server.startTcpServer()
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# self.tcpButton.setText("停止 TCP 服务器")
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def toggleUdpServer(self):
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if self.server.udpRunning:
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self.server.stopUdpServer()
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self.udpButton.setText("开启远程通讯模式")
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else:
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self.server.startUdpServer()
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self.udpButton.setText("关闭远程通讯模式")
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def updateLog(self, message):
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self.logDisplay.append(message)
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def closeEvent(self, event):
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# 关闭窗口时停止所有服务
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if self.server.tcpRunning:
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self.server.stopTcpServer()
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if self.server.udpRunning:
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self.server.stopUdpServer()
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event.accept()
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