From 35eceb867683e7a9adb9b482d8092064537d89ff Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Thu, 17 Jun 2021 15:44:10 +0800
Subject: [PATCH] bugfix

---
 appPublic/udp_comm.py | 55 +++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 appPublic/udp_comm.py

diff --git a/appPublic/udp_comm.py b/appPublic/udp_comm.py
new file mode 100644
index 0000000..d2ef3c7
--- /dev/null
+++ b/appPublic/udp_comm.py
@@ -0,0 +1,55 @@
+# -*- coding:UTF-8 -*-
+from socket import *
+import json
+from appPublic.sockPackage import get_free_local_addr
+from appPublic.background import Background
+BUFSIZE = 1024
+class UdpComm:
+	def __init__(self, port, callback, timeout=1):
+		self.callback = callback
+		self.host = get_free_local_addr()[0]
+		self.port = port
+		self.udpSerSock = socket(AF_INET, SOCK_DGRAM)
+		# 设置阻塞
+		self.udpSerSock.setblocking(1)
+		# 设置超时时间 1s
+		# self.udpSerSock.settimeout(timeout)
+		self.udpSerSock.bind(('' ,port))
+		self.run_flg = True
+		self.thread = Background(self.run)
+		self.thread.start()
+	
+	def run(self):
+		while self.run_flg:
+			try:
+				b, addr = self.udpSerSock.recvfrom(BUFSIZE)
+				data = json.loads(b)
+				if addr[0] != self.host:
+					self.callback(data, addr)
+				# ret = json.dumps(self.info).encode('utf-8')
+				# self.udpSerSock.sendto(ret, addr)
+			except Exception as e:
+				print('exception happened:',e)
+				pass
+
+	def stop(self):
+		self.run_flg = False
+		self.udpSerSock.close()
+		
+	def broadcast(self, data):
+		broadcast_host = '.'.join(self.host.split('.')[:-1]) + '.255'
+		udpCliSock = socket(AF_INET, SOCK_DGRAM)
+		udpCliSock.settimeout(self.timeout)
+		udpCliSock.bind(('', 0))  
+		udpCliSock.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)  
+		b = json.dumps(data).encode('utf-8')
+		udpCliSock.sendto(b, (broadcast_host,self.port))
+
+	def send(self,data,addr):
+		b = json.dumps(data).encode('utf-8')
+		self.udpSerSock.sendto(b,addr)
+
+	def sends(self,data, addrs):
+		b = json.dumps(data).encode('utf-8')
+		for addr in addrs:
+			self.udpSerSock.sendto(b,addr)