From 1e7160abbfaec11e359f7963b39e38696a40ea12 Mon Sep 17 00:00:00 2001
From: yumoqing <yumoqing@gmail.com>
Date: Sat, 26 Sep 2020 21:54:43 +0800
Subject: [PATCH] bugfix

---
 appPublic/background.py  | 11 +++++++
 appPublic/find_player.py | 64 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 75 insertions(+)
 create mode 100644 appPublic/background.py
 create mode 100644 appPublic/find_player.py

diff --git a/appPublic/background.py b/appPublic/background.py
new file mode 100644
index 0000000..04d4c08
--- /dev/null
+++ b/appPublic/background.py
@@ -0,0 +1,11 @@
+from threading import Thread
+
+class Background(Thread):
+	def __init__(self,func, *args,**kw):
+		Thread.__init__(self)
+		self.__callee = func
+		self.__args = args
+		self.__kw = kw
+
+	def run(self):
+		self.__callee(*self.__args, **self.__kw)
diff --git a/appPublic/find_player.py b/appPublic/find_player.py
new file mode 100644
index 0000000..246b29c
--- /dev/null
+++ b/appPublic/find_player.py
@@ -0,0 +1,64 @@
+# !/usr/bin/env python
+# -*- coding:UTF-8 -*-
+from socket import *
+import json
+from appPublic.sockPackage import get_free_local_addr
+from background import Background
+BUFSIZE = 1024
+class BroadcastServer:
+	def __init__(self, port, info):
+		self.info = info
+		self.port = port
+		self.udpSerSock = socket(AF_INET, SOCK_DGRAM)
+		# 设置阻塞
+		self.udpSerSock.setblocking(1)
+		# 设置超时时间 0.5s
+		# self.udpSerSock.settimeout(0.5)
+		self.udpSerSock.bind(('' ,port))
+		self.run_flg = True
+		self.thread = Background(self.run)
+		self.thread.start()
+	
+	def run(self):
+		while self.run_flg:
+			try:
+				print('broadcast_server():wait for receive...',self.port)
+				data, addr = self.udpSerSock.recvfrom(BUFSIZE)
+				print('broadcast_server(), received=',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 find_players(port):
+	# broadcast_addr = '.'.join(host.split('.')[:-1]) + '.255'
+	host = get_free_local_addr()[0]
+	udpCliSock = socket(AF_INET, SOCK_DGRAM)
+	#设置阻塞
+	udpCliSock.setblocking(2)
+	#设置超时时间
+	udpCliSock.settimeout(2)
+	udpCliSock.bind(('', 0))  
+	udpCliSock.setsockopt(SOL_SOCKET, SO_BROADCAST, 1)  
+	print('find_players() port=',port)
+	udpCliSock.sendto(b'findplayers', ('255.255.255.255',port))
+	players = []
+	while True:
+		try:
+			data,addr = udpCliSock.recvfrom(BUFSIZE)
+			if  addr[0] != host and data:
+				data = data.decode('utf-8')
+				d = json.loads(data)
+				d['ip'] = addr[0]
+				players.append(d)
+		except Exception as e:
+			print('error happened',e)
+			break
+	udpCliSock.close()
+	return players
+