1. 效果圖

可以對多個客戶端進行調試tcp相關的通訊的報文調試，使用python3。python的程序複製粘貼會有縮進空格問題要重新格式化。

2. 程序

例如監控端口 1088，在防火牆打開1088端口，運行腳本，用子設備連接外網IP和端口即可。

import threading
import socket

encode = 'utf-8'
BUFSIZE = 1024

# a read thread, read data from remote
class Reader(threading.Thread):
        def __init__(self, client, cltadd):
                threading.Thread.__init__(self)
                self.client = client
                self.cltadd = cltadd

        def run(self):
                while True:
                        data = self.client.recv(BUFSIZE)
                        if(data):
                                string = bytes.decode(data, encode)
                                print(str(self.cltadd) + ":" + string, end='')
                                # add an enter to print inmediatly
                                print('')
                                #reply client
                                self.client.send(bytes("SEND OK\r\n", encoding=encode)) 
                        else:
                                break
                print("close:", self.client.getpeername())

# a listen thread, listen remote connect
# when a remote machine request to connect, it will create a read thread to handle
class Listener(threading.Thread):
        def __init__(self, port):
                threading.Thread.__init__(self)
                self.port = port
                self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
                self.sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
                self.sock.bind(("0.0.0.0", port))
                self.sock.listen(0)
        def run(self):
                print("listener started")
                while True:
                        client, cltadd = self.sock.accept()
                        Reader(client, cltadd).start()
                        print("accept a connect" + str(cltadd))


lst  = Listener(1088)   # create a listen thread
lst.start() # then start