server.py

import socket
from .pqdinstrument import PPMS

def run_server(host='', port=0, instrument_host='', instrument_port=11000, verbose=True):
    '''Run a QDInstrument server inside an IronPython console.'''
    server = Server(host, port, instrument_host, instrument_port)
    server.run(verbose)

class Server():
    '''
    Server for connecting remotely to the IronPython console through a socket connection.
    '''
    def __init__(self, remote_host, remote_port, instrument_host, instrument_port):
        self.HOST = remote_host
        self.PORT = remote_port
        self.ppms = PPMS(instrument_host, instrument_port)

    def run(self, verbose=False):
        '''Run a measurement server for remote communication.'''
        ppms = self.ppms
        while True:
            print('Creating socket at %s:%s...' %(self.HOST, self.PORT))
            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
            s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
            s.bind((self.HOST, self.PORT))
            s.listen(1)
            conn, addr = s.accept()
            print('Connected by', addr)
            while True:
                cmd = conn.recv(1024)
                if not cmd: break
                try:
                    cmd = b'ppms.' + cmd
                    if verbose: print(cmd.decode())
                    if b'=' in cmd:
                        exec(cmd)
                        response = 'True'
                    else:
                        response = str(eval(cmd))
                    conn.sendall(response.encode())
                except (SyntaxError, NameError, AttributeError):
                    conn.sendall(b'Command not recognized.')
            conn.close()