Python的套接字：socket連接被拒絕

Question

ENV：LINUX + python3 + rornado

當我運行client.py，他建議我的連接被拒絕，幾個端口，使用127.0.0.1:7233,The服務器沒有任何迴應，但客戶端提示拒絕連接，誰能告訴我爲什麼？

server.py

# coding:utf8 

import socket 
import time 
import threading 


# accept conn 
def get_hart(host, port): 
    global clien_list 
    print('begin get_hart') 
    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM) 
    s.bind((host, port)) 
    s.listen(5) 
    print(clien_list) 

    while True: 
     try: 
      clien, address = s.accept() 
      try: 
       clien_data = clien.recv(1024).decode('utf8') 
       if clien_data == str(0): 
        clien_id = clien_reg() 
        clien.send(str(clien_id)) 
        print(clien_list) 
       else: 
        clien_list[int(clien_data)]['time'] = time.time() 
        # print clien_data 
      except: 
       print('send fail！') 
      clien.close() 
     except: 
      print("accept fail!") 
      continue 


# client reg 
def clien_reg(): 
    global clien_list 
    tim = str(time.time()/100).split('.') 
    id = int(tim[1]) 
    clien_list[id] = {"time": time.time(), "state": 0} 
    return id 


# client dict 
def check_hart(clien_list, delay, lost_time): 
    while True: 
     for id in clien_list: 
      if abs(clien_list[id]['time'] - time.time()) > lost_time: 
       clien_list[id]['state'] = 0 
       del clien_list[id] # del offline client 
       break # err 
      else: 
       clien_list[id]['state'] = 1 
     print(clien_list) 
     time.sleep(delay) 


if __name__ == '__main__': 
    host = '127.0.0.1' 
    port = 7233 
    global clien_list # Dict: client info 
    clien_list = {} 
    lost_time = 30 # timeout 
    print('begin threading') 
    try: 
     threading.Thread(target=get_hart,args=(host,port,),name='getHart') 
     threading.Thread(target=check_hart,args=(clien_list, 5, lost_time,)) 
    except Exception as e: 
     print("thread error!"+e) 

    while 1: 
     pass 
    print('e') 

client.py

# coding:utf8 

import socket 
import time 


# sent pkg 
def send_hart(host, port, delay): 
    s = socket.socket(socket.AF_INET,socket.SOCK_STREAM) 
    print(host,port) 
    global clien_id 
    try: 
     s.connect((host, port)) 
     s.send(clien_id) 
     if clien_id == 0: 
      try: 
       to_clien_id = s.recv(1024) 
       clien_id = to_clien_id 
      except: 
       print('send fail！') 
      print(to_clien_id) # test id 
     time.sleep(delay) 
    except Exception as e: 
     print('connect fail!:'+e) 
     time.sleep(delay) 


if __name__ == '__main__': 
    host = '127.0.0.1' 
    port = 7233 
    global clien_id 
    clien_id = 0 # client reg id 
    while True: 
     send_hart(host, port, 5) 

錯誤

Traceback (most recent call last): 
    File "/home/ubuntu/XPlan/socket_test/client.py", line 13, in send_hart 
    s.connect((host, port)) 
ConnectionRefusedError: [Errno 111] Connection refused 

During handling of the above exception, another exception occurred: 

Traceback (most recent call last): 
    File "/home/ubuntu/XPlan/socket_test/client.py", line 34, in <module> 
    send_hart(host, port, 5) 
    File "/home/ubuntu/XPlan/socket_test/client.py", line 24, in send_hart 
    print('connect fail!:'+e) 
TypeError: Can't convert 'ConnectionRefusedError' object to str implicitly 

Process finished with exit code 1 

Answer 1

變化

print('connect fail!:'+e) 

到

print('connect fail!:'+str(e)) 

Answer 2

發現問題， 首先，線程需要start（）函數開始， 第二，Python3，發送（）函數接受字節， 第三，打印異常需要的價值切換到str類型

threading.Thread(target=get_hart,args=(host,port,),name='getHart',).start() 

print("thread error!"+str(e))