import sys from PyQt5 import QtCore as qtc from PyQt5 import QtNetwork as qtn class Server(qtn.QTcpServer): def __init__(self): super().__init__() self.newConnection.connect(self.on_new_connection) self.connections = [] self.listen(qtn.QHostAddress.Any, 8080) def on_new_connection(self): while self.hasPendingConnections(): cx = self.nextPendingConnection() self.connections.append(cx) cx.readyRead.connect(self.process_datastream) def process_datastream(self): for cx in self.connections: self.datastream = qtc.QDataStream(cx) print(self.datastream.readRawData(cx.bytesAvailable())) self.datastream.writeRawData(b'PyQt5 Rocks!') cx.disconnectFromHost() if __name__ == '__main__': app = qtc.QCoreApplication(sys.argv) server = Server() sys.exit(app.exec())