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[英]How can I run two flask servers in two threads/processes on two ports under one python program?
[英]How to run two servers in one python code
我嘗試在下面的一個python代碼中制作兩個udp監聽服務器,
import threading
import time
import socket
class udpreceive:
def __init__(self,port,ip):
self.port = port
self.ip = ip
self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.sock.bind((self.ip, self.port))
def startserver(self):
while True:
time.sleep(1)
data, addr = self.sock.recvfrom(1024)
print (data)
server1 = udpreceive(514,"192.168.1.5")
s1 = threading.Thread(target=server1.startserver())
server2 = udpreceive(515,"192.168.1.5")
s2 = threading.Thread(target=server2.startserver())
s2.start()
s1.start()
這是udp發送者1的客戶端代碼
import socket
import time
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
counter =0
while True:
send_data = "hellow world server1 :- "+ str(counter)
sock.sendto(send_data.encode(), ("192.168.1.5", 514))
print (send_data)
counter +=1
這是發件人2的客戶端代碼
import socket
import time
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
counter =0
while True:
send_data = "hellow world server2 :- "+ str(counter)
sock.sendto(send_data.encode(), ("192.168.1.5", 514))
print (send_data)
counter +=1
當我運行接收代碼時,它僅顯示發送者1的數據。 僅啟動發送方2並開始接收代碼,但不顯示任何發送方2正在發送數據,但我開始發送方1接收代碼顯示發送方1數據。
我做錯了什么? 我需要在接收程序中同時顯示發送方1和發送方2的數據
我是oop和socket編程的新手,謝謝
在線程模塊中,“ target”關鍵字參數不應包含方括號 ,請參見如何不等待線程在Python中完成 。 應為:
threading.Thread(target=server1.startserver)
然后,兩個UDP服務器線程應開始然后加入 ,因為公平共享CPU資源非常重要(尤其是在使用無限循環時)。
服務器的代碼可以是:
import threading
import time
import socket
class udpreceive:
def __init__(self,port,ip):
self.port = port
self.ip = ip
self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.sock.bind((self.ip, self.port))
def startserver(self):
while True:
data, addr = self.sock.recvfrom(1024)
print(f'port {self.port} receives {data}')
s1 = udpreceive(514, "192.168.1.5")
s2 = udpreceive(515, "192.168.1.5")
threads = [threading.Thread(target=s1.startserver), threading.Thread(target=s2.startserver)]
for th in threads:
th.start()
print(f'threads {th} started')
th.join(0.1)
同時,您可能需要將發送方2中的代碼更改為:
sock.sendto(send_data.encode(), ("192.168.1.5", 515)) # Send to port 515, not 514
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